Xerces2 Implementation: Class XIncludeHandler

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## org.apache.xerces.xinclude
Class XIncludeHandler

    java.lang.Object
      |
      +--org.apache.xerces.xinclude.XIncludeHandler

All Implemented Interfaces:
  org.apache.xerces.xni.parser.XMLComponent, org.apache.xerces.xni.parser.XMLDocumentFilter, org.apache.xerces.xni.XMLDocumentHandler, org.apache.xerces.xni.parser.XMLDocumentSource, org.apache.xerces.xni.parser.XMLDTDFilter, org.apache.xerces.xni.XMLDTDHandler, org.apache.xerces.xni.parser.XMLDTDSource

public class XIncludeHandler
extends java.lang.Object
implements org.apache.xerces.xni.parser.XMLComponent, org.apache.xerces.xni.parser.XMLDocumentFilter, org.apache.xerces.xni.parser.XMLDTDFilter

This is a pipeline component which performs XInclude handling, according to the W3C specification for XML Inclusions.

This component analyzes each event in the pipeline, looking for <include> elements. An <include> element is one which has a namespace of `http://www.w3.org/2003/XInclude` and a localname of `include`. When it finds an <include> element, it attempts to include the file specified in the `href` attribute of the element. If inclusion succeeds, all children of the <include> element are ignored (with the exception of checking for invalid children as outlined in the specification). If the inclusion fails, the <fallback> child of the <include> element is processed.

See the XInclude specification for more information on how XInclude is to be used.

This component requires the following features and properties from the component manager that uses it:

- http://xml.org/sax/features/allow-dtd-events-after-endDTD
- http://apache.org/xml/properties/internal/error-reporter
- http://apache.org/xml/properties/internal/entity-resolver

Furthermore, the `NamespaceContext` used in the pipeline is required to be an instance of `XIncludeNamespaceSupport`.

Currently, this implementation has only partial support for the XInclude specification. Specifically, it is missing support for XPointer document fragments. Thus, only whole documents can be included using this component in the pipeline.

Version:
  $Id: XIncludeHandler.java,v 1.21 2004/02/17 07:14:49 neeraj Exp $
Author:
  Peter McCracken, IBM
See Also:
  `XIncludeNamespaceSupport`

Inner Class Summary
`protected class` | `XIncludeHandler.Notation`
`protected class` | `XIncludeHandler.UnparsedEntity`

Field Summary
`protected static java.lang.String` | `ALLOW_UE_AND_NOTATION_EVENTS` Feature identifier: allow notation and unparsed entity events to be sent out of order.
`protected java.util.Stack` | `baseURI`
`protected IntStack` | `baseURIScope`
`static java.lang.String` | `CURRENT_BASE_URI` The identifier for the Augmentation that contains the current base URI
`protected static java.lang.String` | `ENTITY_RESOLVER` Property identifier: entity resolver.
`protected static java.lang.String` | `ERROR_REPORTER` Property identifier: error reporter.
`protected java.util.Stack` | `expandedSystemID`
`protected org.apache.xerces.xni.parser.XMLParserConfiguration` | `fChildConfig`
`protected org.apache.xerces.xni.XMLResourceIdentifier` | `fCurrentBaseURI`
`protected org.apache.xerces.xni.XMLLocator` | `fDocLocation`
`protected org.apache.xerces.xni.XMLDocumentHandler` | `fDocumentHandler`
`protected org.apache.xerces.xni.parser.XMLDocumentSource` | `fDocumentSource`
`protected org.apache.xerces.xni.XMLDTDHandler` | `fDTDHandler`
`protected org.apache.xerces.xni.parser.XMLDTDSource` | `fDTDSource`
`protected org.apache.xerces.xni.parser.XMLEntityResolver` | `fEntityResolver`
`protected XMLErrorReporter` | `fErrorReporter`
`protected XIncludeNamespaceSupport` | `fNamespaceContext`
`protected java.lang.String` | `fParentRelativeURI`
`protected XIncludeHandler` | `fParentXIncludeHandler`
`protected SecurityManager` | `fSecurityManager`
`protected ParserConfigurationSettings` | `fSettings`
`static java.lang.String` | `HTTP_ACCEPT`
`static java.lang.String` | `HTTP_ACCEPT_CHARSET`
`static java.lang.String` | `HTTP_ACCEPT_LANGUAGE`
`protected java.util.Stack` | `literalSystemID`
`static org.apache.xerces.xni.QName` | `NEW_NS_ATTR_QNAME`
`protected static java.lang.String` | `SECURITY_MANAGER` property identifier: security manager.
`static java.lang.String` | `XINCLUDE_ATTR_ACCEPT`
`static java.lang.String` | `XINCLUDE_ATTR_ACCEPT_CHARSET`
`static java.lang.String` | `XINCLUDE_ATTR_ACCEPT_LANGUAGE`
`static java.lang.String` | `XINCLUDE_ATTR_ENCODING`
`static java.lang.String` | `XINCLUDE_ATTR_HREF`
`static java.lang.String` | `XINCLUDE_ATTR_PARSE`
`static java.lang.String` | `XINCLUDE_BASE`
`static java.lang.String` | `XINCLUDE_DEFAULT_CONFIGURATION`
`static java.lang.String` | `XINCLUDE_FALLBACK`
`static java.lang.String` | `XINCLUDE_INCLUDE`
`static java.lang.String` | `XINCLUDE_INCLUDED`
`static java.lang.String` | `XINCLUDE_NS_URI`
`static java.lang.String` | `XINCLUDE_NS_URI_OLD`
`static java.lang.String` | `XINCLUDE_PARSE_TEXT`
`static java.lang.String` | `XINCLUDE_PARSE_XML`
`static org.apache.xerces.xni.QName` | `XML_BASE_QNAME`
`static java.lang.String` | `XPOINTER`

Fields inherited from interface org.apache.xerces.xni.XMLDTDHandler
`CONDITIONAL_IGNORE, CONDITIONAL_INCLUDE`

Constructor Summary
`XIncludeHandler()`

Method Summary
`protected void` | `addNotation(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier identifier, org.apache.xerces.xni.Augmentations augmentations)` Caches a notation.
`protected void` | `addUnparsedEntity(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier identifier, java.lang.String notation, org.apache.xerces.xni.Augmentations augmentations)` Caches an unparsed entity.
`void` | `attributeDecl(java.lang.String elementName, java.lang.String attributeName, java.lang.String type, java.lang.String[] enumeration, java.lang.String defaultType, org.apache.xerces.xni.XMLString defaultValue, org.apache.xerces.xni.XMLString nonNormalizedDefaultValue, org.apache.xerces.xni.Augmentations augmentations)` An attribute declaration.
`void` | `characters(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augs)` Character content.
`protected void` | `checkAndSendNotation(XIncludeHandler.Notation not)` The purpose of this method is to check if a Notation conflicts with a previously declared notation in the current pipeline stack.
`protected void` | `checkAndSendUnparsedEntity(XIncludeHandler.UnparsedEntity ent)` The purpose of this method is to check if an UnparsedEntity conflicts with a previously declared entity in the current pipeline stack.
`protected void` | `checkNotation(java.lang.String notName)` Checks if a Notation with the given name was declared in the DTD of the document for the current pipeline.
`protected void` | `checkUnparsedEntity(java.lang.String entName)` Checks if an UnparsedEntity with the given name was declared in the DTD of the document for the current pipeline.
`void` | `comment(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augs)` A comment.
`protected void` | `copyFeatures(org.apache.xerces.xni.parser.XMLComponentManager from, ParserConfigurationSettings to)`
`protected void` | `copyFeatures(org.apache.xerces.xni.parser.XMLComponentManager from, org.apache.xerces.xni.parser.XMLParserConfiguration to)`
`void` | `doctypeDecl(java.lang.String rootElement, java.lang.String publicId, java.lang.String systemId, org.apache.xerces.xni.Augmentations augs)` Notifies of the presence of the DOCTYPE line in the document.
`void` | `elementDecl(java.lang.String name, java.lang.String contentModel, org.apache.xerces.xni.Augmentations augmentations)` An element declaration.
`void` | `emptyElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes, org.apache.xerces.xni.Augmentations augs)` An empty element.
`void` | `endAttlist(org.apache.xerces.xni.Augmentations augmentations)` The end of an attribute list.
`void` | `endCDATA(org.apache.xerces.xni.Augmentations augs)` The end of a CDATA section.
`void` | `endConditional(org.apache.xerces.xni.Augmentations augmentations)` The end of a conditional section.
`void` | `endDocument(org.apache.xerces.xni.Augmentations augs)` The end of the document.
`void` | `endDTD(org.apache.xerces.xni.Augmentations augmentations)` The end of the DTD.
`void` | `endElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.Augmentations augs)` The end of an element.
`void` | `endExternalSubset(org.apache.xerces.xni.Augmentations augmentations)` The end of the DTD external subset.
`void` | `endGeneralEntity(java.lang.String name, org.apache.xerces.xni.Augmentations augs)` This method notifies the end of a general entity.
`void` | `endParameterEntity(java.lang.String name, org.apache.xerces.xni.Augmentations augmentations)` This method notifies the end of a parameter entity.
`void` | `externalEntityDecl(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier identifier, org.apache.xerces.xni.Augmentations augmentations)` An external entity declaration.
`java.lang.String` | `getBaseURI(int depth)` Gets the base URI that was in use at that depth
`org.apache.xerces.xni.XMLDocumentHandler` | `getDocumentHandler()` Returns the document handler
`org.apache.xerces.xni.parser.XMLDocumentSource` | `getDocumentSource()` Returns the document source.
`org.apache.xerces.xni.XMLDTDHandler` | `getDTDHandler()` Returns the DTD handler.
`org.apache.xerces.xni.parser.XMLDTDSource` | `getDTDSource()`
`java.lang.Boolean` | `getFeatureDefault(java.lang.String featureId)` Returns the default state for a feature, or null if this component does not want to report a default value for this feature.
`java.lang.Object` | `getPropertyDefault(java.lang.String propertyId)` Returns the default state for a property, or null if this component does not want to report a default value for this property.
`java.lang.String[]` | `getRecognizedFeatures()` Returns a list of feature identifiers that are recognized by this component.
`java.lang.String[]` | `getRecognizedProperties()` Returns a list of property identifiers that are recognized by this component.
`protected java.lang.String` | `getRelativeBaseURI()` Returns a URI, relative to the include parent's base URI, of the current [base URI].
`java.lang.String` | `getRelativeURI(int depth)` Returns a relative URI, which when resolved against the base URI at the specified depth, will create the current base URI.
`protected boolean` | `getSawFallback(int depth)` Returns whether an <fallback> was encountered at the specified depth, as an ancestor of the current element, or as a sibling of an ancestor of the current element.
`protected boolean` | `getSawInclude(int depth)` Return whether an <include> was encountered at the specified depth, as an ancestor of the current item.
`protected int` | `getState()`
`protected int` | `getState(int depth)`
`protected void` | `handleFallbackElement()`
`protected boolean` | `handleIncludeElement(org.apache.xerces.xni.XMLAttributes attributes)`
`protected boolean` | `hasXInclude2001Namespace(org.apache.xerces.xni.QName element)` Returns true if the element has the namespace "http://www.w3.org/2001/XInclude"
`protected boolean` | `hasXIncludeNamespace(org.apache.xerces.xni.QName element)` Returns true if the element has the namespace "http://www.w3.org/2003/XInclude"
`void` | `ignorableWhitespace(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augs)` Ignorable whitespace.
`void` | `ignoredCharacters(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augmentations)` Characters within an IGNORE conditional section.
`void` | `internalEntityDecl(java.lang.String name, org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.XMLString nonNormalizedText, org.apache.xerces.xni.Augmentations augmentations)` An internal entity declaration.
`protected boolean` | `isFallbackElement(org.apache.xerces.xni.QName element)` Checks if the element is an <fallback> element.
`protected boolean` | `isIncludeElement(org.apache.xerces.xni.QName element)` Checks if the element is an <include> element.
`protected boolean` | `isRootDocument()`
`protected boolean` | `isTopLevelIncludedItem()` Returns true if the current element is a top level included item.
`protected boolean` | `isTopLevelIncludedItemViaFallback()`
`protected boolean` | `isTopLevelIncludedItemViaInclude()`
`protected org.apache.xerces.xni.Augmentations` | `modifyAugmentations(org.apache.xerces.xni.Augmentations augs)` Modify the augmentations.
`protected org.apache.xerces.xni.Augmentations` | `modifyAugmentations(org.apache.xerces.xni.Augmentations augs, boolean force)` Modify the augmentations.
`void` | `notationDecl(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier identifier, org.apache.xerces.xni.Augmentations augmentations)` A notation declaration
`protected org.apache.xerces.xni.XMLAttributes` | `processAttributes(org.apache.xerces.xni.XMLAttributes attributes)` Processes the XMLAttributes object of startElement() calls.
`void` | `processingInstruction(java.lang.String target, org.apache.xerces.xni.XMLString data, org.apache.xerces.xni.Augmentations augs)` A processing instruction.
`protected void` | `processXMLBaseAttributes(org.apache.xerces.xni.XMLAttributes attributes)` Search for a xml:base attribute, and if one is found, put the new base URI into effect.
`protected void` | `reportFatalError(java.lang.String key)`
`protected void` | `reportFatalError(java.lang.String key, java.lang.Object[] args)`
`protected void` | `reportResourceError(java.lang.String key)`
`protected void` | `reportResourceError(java.lang.String key, java.lang.Object[] args)`
`void` | `reset(org.apache.xerces.xni.parser.XMLComponentManager componentManager)` Resets the component.
`protected void` | `restoreBaseURI()` Discards the URIs at the top of the stack, and restores the ones beneath it.
`protected boolean` | `sameBaseURIAsIncludeParent()` Returns true if the current [base URI] is the same as the [base URI] that was in effect on the include parent.
`protected void` | `saveBaseURI()` Saves the current base URI to the top of the stack.
`protected boolean` | `searchForRecursiveIncludes(org.apache.xerces.xni.XMLLocator includedSource)` Checks if the file indicated by the given XMLLocator has already been included in the current stack.
`void` | `setDocumentHandler(org.apache.xerces.xni.XMLDocumentHandler handler)` Sets the document handler.
`void` | `setDocumentSource(org.apache.xerces.xni.parser.XMLDocumentSource source)` Sets the document source.
`void` | `setDTDHandler(org.apache.xerces.xni.XMLDTDHandler handler)` Sets the DTD handler.
`void` | `setDTDSource(org.apache.xerces.xni.parser.XMLDTDSource source)`
`void` | `setFeature(java.lang.String featureId, boolean state)` Sets the state of a feature.
`protected void` | `setParent(XIncludeHandler parent)` Set the parent of this XIncludeHandler in the tree
`void` | `setProperty(java.lang.String propertyId, java.lang.Object value)` Sets the value of a property.
`protected void` | `setSawFallback(int depth, boolean val)` Records that an <fallback> was encountered at the specified depth, as an ancestor of the current element, or as a sibling of an ancestor of the current element.
`protected void` | `setSawInclude(int depth, boolean val)` Records that an <include> was encountered at the specified depth, as an ancestor of the current item.
`protected void` | `setState(int state)`
`void` | `startAttlist(java.lang.String elementName, org.apache.xerces.xni.Augmentations augmentations)` The start of an attribute list.
`void` | `startCDATA(org.apache.xerces.xni.Augmentations augs)` The start of a CDATA section.
`void` | `startConditional(short type, org.apache.xerces.xni.Augmentations augmentations)` The start of a conditional section.
`void` | `startDocument(org.apache.xerces.xni.XMLLocator locator, java.lang.String encoding, org.apache.xerces.xni.NamespaceContext namespaceContext, org.apache.xerces.xni.Augmentations augs)` Event sent at the start of the document.
`void` | `startDTD(org.apache.xerces.xni.XMLLocator locator, org.apache.xerces.xni.Augmentations augmentations)` The start of the DTD.
`void` | `startElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes, org.apache.xerces.xni.Augmentations augs)` The start of an element.
`void` | `startExternalSubset(org.apache.xerces.xni.XMLResourceIdentifier identifier, org.apache.xerces.xni.Augmentations augmentations)` The start of the DTD external subset.
`void` | `startGeneralEntity(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier resId, java.lang.String encoding, org.apache.xerces.xni.Augmentations augs)` This method notifies the start of a general entity.
`void` | `startParameterEntity(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier identifier, java.lang.String encoding, org.apache.xerces.xni.Augmentations augmentations)` This method notifies of the start of a parameter entity.
`void` | `textDecl(java.lang.String version, java.lang.String encoding, org.apache.xerces.xni.Augmentations augs)` Notifies of the presence of a TextDecl line in an entity.
`void` | `unparsedEntityDecl(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier identifier, java.lang.String notation, org.apache.xerces.xni.Augmentations augmentations)` An unparsed entity declaration.
`void` | `xmlDecl(java.lang.String version, java.lang.String encoding, java.lang.String standalone, org.apache.xerces.xni.Augmentations augs)` Notifies of the presence of an XMLDecl line in the document.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### XINCLUDE_DEFAULT_CONFIGURATION

    public static final java.lang.String XINCLUDE_DEFAULT_CONFIGURATION

### HTTP_ACCEPT

    public static final java.lang.String HTTP_ACCEPT

### HTTP_ACCEPT_LANGUAGE

    public static final java.lang.String HTTP_ACCEPT_LANGUAGE

### HTTP_ACCEPT_CHARSET

    public static final java.lang.String HTTP_ACCEPT_CHARSET

### XPOINTER

    public static final java.lang.String XPOINTER

### XINCLUDE_NS_URI

    public static final java.lang.String XINCLUDE_NS_URI

### XINCLUDE_NS_URI_OLD

    public static final java.lang.String XINCLUDE_NS_URI_OLD

### XINCLUDE_INCLUDE

    public static final java.lang.String XINCLUDE_INCLUDE

### XINCLUDE_FALLBACK

    public static final java.lang.String XINCLUDE_FALLBACK

### XINCLUDE_PARSE_XML

    public static final java.lang.String XINCLUDE_PARSE_XML

### XINCLUDE_PARSE_TEXT

    public static final java.lang.String XINCLUDE_PARSE_TEXT

### XINCLUDE_ATTR_HREF

    public static final java.lang.String XINCLUDE_ATTR_HREF

### XINCLUDE_ATTR_PARSE

    public static final java.lang.String XINCLUDE_ATTR_PARSE

### XINCLUDE_ATTR_ENCODING

    public static final java.lang.String XINCLUDE_ATTR_ENCODING

### XINCLUDE_ATTR_ACCEPT

    public static final java.lang.String XINCLUDE_ATTR_ACCEPT

### XINCLUDE_ATTR_ACCEPT_LANGUAGE

    public static final java.lang.String XINCLUDE_ATTR_ACCEPT_LANGUAGE

### XINCLUDE_ATTR_ACCEPT_CHARSET

    public static final java.lang.String XINCLUDE_ATTR_ACCEPT_CHARSET

### XINCLUDE_INCLUDED

    public static final java.lang.String XINCLUDE_INCLUDED

### CURRENT_BASE_URI

    public static final java.lang.String CURRENT_BASE_URI

  The identifier for the Augmentation that contains the current base URI

### XINCLUDE_BASE

    public static final java.lang.String XINCLUDE_BASE

### XML_BASE_QNAME

    public static final org.apache.xerces.xni.QName XML_BASE_QNAME

### NEW_NS_ATTR_QNAME

    public static final org.apache.xerces.xni.QName NEW_NS_ATTR_QNAME

### ALLOW_UE_AND_NOTATION_EVENTS

    protected static final java.lang.String ALLOW_UE_AND_NOTATION_EVENTS

  Feature identifier: allow notation and unparsed entity events to be sent out of order.

### ERROR_REPORTER

    protected static final java.lang.String ERROR_REPORTER

  Property identifier: error reporter.

### ENTITY_RESOLVER

    protected static final java.lang.String ENTITY_RESOLVER

  Property identifier: entity resolver.

### SECURITY_MANAGER

    protected static final java.lang.String SECURITY_MANAGER

  property identifier: security manager.

### fDocumentHandler

    protected org.apache.xerces.xni.XMLDocumentHandler fDocumentHandler

### fDocumentSource

    protected org.apache.xerces.xni.parser.XMLDocumentSource fDocumentSource

### fDTDHandler

    protected org.apache.xerces.xni.XMLDTDHandler fDTDHandler

### fDTDSource

    protected org.apache.xerces.xni.parser.XMLDTDSource fDTDSource

### fParentXIncludeHandler

    protected XIncludeHandler fParentXIncludeHandler

### fParentRelativeURI

    protected java.lang.String fParentRelativeURI

### fChildConfig

    protected org.apache.xerces.xni.parser.XMLParserConfiguration fChildConfig

### fDocLocation

    protected org.apache.xerces.xni.XMLLocator fDocLocation

### fNamespaceContext

    protected XIncludeNamespaceSupport fNamespaceContext

### fErrorReporter

    protected XMLErrorReporter fErrorReporter

### fEntityResolver

    protected org.apache.xerces.xni.parser.XMLEntityResolver fEntityResolver

### fSecurityManager

    protected SecurityManager fSecurityManager

### fCurrentBaseURI

    protected org.apache.xerces.xni.XMLResourceIdentifier fCurrentBaseURI

### baseURIScope

    protected IntStack baseURIScope

### baseURI

    protected java.util.Stack baseURI

### literalSystemID

    protected java.util.Stack literalSystemID

### expandedSystemID

    protected java.util.Stack expandedSystemID

### fSettings

    protected ParserConfigurationSettings fSettings

Constructor Detail

### XIncludeHandler

    public XIncludeHandler()

Method Detail

### reset

    public void reset(org.apache.xerces.xni.parser.XMLComponentManager componentManager)
               throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.parser.XMLComponent`
  Resets the component. The component can query the component manager about any features and properties that affect the operation of the component.
  Specified by:
    `reset` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Following copied from interface: `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `componentManager` - The component manager.
  Throws:
    `XNIException` - Thrown by component on initialization error.

### getRecognizedFeatures

    public java.lang.String[] getRecognizedFeatures()

  Returns a list of feature identifiers that are recognized by this component. This method may return null if no features are recognized by this component.
  Specified by:
    `getRecognizedFeatures` in interface `org.apache.xerces.xni.parser.XMLComponent`

### setFeature

    public void setFeature(java.lang.String featureId,
                           boolean state)
                    throws org.apache.xerces.xni.parser.XMLConfigurationException

  Sets the state of a feature. This method is called by the component manager any time after reset when a feature changes state.

  Note: Components should silently ignore features that do not affect the operation of the component.

  Specified by:
    `setFeature` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `featureId` - The feature identifier.
    `state` - The state of the feature.
  Throws:
    `SAXNotRecognizedException` - The component should not throw this exception.
    `SAXNotSupportedException` - The component should not throw this exception.

### getRecognizedProperties

    public java.lang.String[] getRecognizedProperties()

  Returns a list of property identifiers that are recognized by this component. This method may return null if no properties are recognized by this component.
  Specified by:
    `getRecognizedProperties` in interface `org.apache.xerces.xni.parser.XMLComponent`

### setProperty

    public void setProperty(java.lang.String propertyId,
                            java.lang.Object value)
                     throws org.apache.xerces.xni.parser.XMLConfigurationException

  Sets the value of a property. This method is called by the component manager any time after reset when a property changes value.

  Note: Components should silently ignore properties that do not affect the operation of the component.

  Specified by:
    `setProperty` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `propertyId` - The property identifier.
    `value` - The value of the property.
  Throws:
    `SAXNotRecognizedException` - The component should not throw this exception.
    `SAXNotSupportedException` - The component should not throw this exception.

### getFeatureDefault

    public java.lang.Boolean getFeatureDefault(java.lang.String featureId)

  Returns the default state for a feature, or null if this component does not want to report a default value for this feature.
  Specified by:
    `getFeatureDefault` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `featureId` - The feature identifier.
  Since:
    Xerces 2.2.0

### getPropertyDefault

    public java.lang.Object getPropertyDefault(java.lang.String propertyId)

  Returns the default state for a property, or null if this component does not want to report a default value for this property.
  Specified by:
    `getPropertyDefault` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `propertyId` - The property identifier.
  Since:
    Xerces 2.2.0

### setDocumentHandler

    public void setDocumentHandler(org.apache.xerces.xni.XMLDocumentHandler handler)

  Description copied from interface: `org.apache.xerces.xni.parser.XMLDocumentSource`
  Sets the document handler.
  Specified by:
    `setDocumentHandler` in interface `org.apache.xerces.xni.parser.XMLDocumentSource`

### getDocumentHandler

    public org.apache.xerces.xni.XMLDocumentHandler getDocumentHandler()

  Description copied from interface: `org.apache.xerces.xni.parser.XMLDocumentSource`
  Returns the document handler
  Specified by:
    `getDocumentHandler` in interface `org.apache.xerces.xni.parser.XMLDocumentSource`

### startDocument

    public void startDocument(org.apache.xerces.xni.XMLLocator locator,
                              java.lang.String encoding,
                              org.apache.xerces.xni.NamespaceContext namespaceContext,
                              org.apache.xerces.xni.Augmentations augs)
                       throws org.apache.xerces.xni.XNIException

  Event sent at the start of the document. A fatal error will occur here, if it is detected that this document has been processed before. This event is only passed on to the document handler if this is the root document.
  Specified by:
    `startDocument` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `locator` - The document locator, or null if the document location cannot be reported during the parsing of this document. However, it is strongly recommended that a locator be supplied that can at least report the system identifier of the document.
    `encoding` - The auto-detected IANA encoding name of the entity stream. This value will be null in those situations where the entity encoding is not auto-detected (e.g. internal entities or a document entity that is parsed from a java.io.Reader).
    `namespaceContext` - The namespace context in effect at the start of this document. This object represents the current context. Implementors of this class are responsible for copying the namespace bindings from the the current context (and its parent contexts) if that information is important.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### xmlDecl

    public void xmlDecl(java.lang.String version,
                        java.lang.String encoding,
                        java.lang.String standalone,
                        org.apache.xerces.xni.Augmentations augs)
                 throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Notifies of the presence of an XMLDecl line in the document. If present, this method will be called immediately following the startDocument call.
  Specified by:
    `xmlDecl` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `version` - The XML version.
    `encoding` - The IANA encoding name of the document, or null if not specified.
    `standalone` - The standalone value, or null if not specified.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### doctypeDecl

    public void doctypeDecl(java.lang.String rootElement,
                            java.lang.String publicId,
                            java.lang.String systemId,
                            org.apache.xerces.xni.Augmentations augs)
                     throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Notifies of the presence of the DOCTYPE line in the document.
  Specified by:
    `doctypeDecl` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `rootElement` - The name of the root element.
    `publicId` - The public identifier if an external DTD or null if the external DTD is specified using SYSTEM.
    `systemId` - The system identifier if an external DTD, null otherwise.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### comment

    public void comment(org.apache.xerces.xni.XMLString text,
                        org.apache.xerces.xni.Augmentations augs)
                 throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  A comment.
  Specified by:
    `comment` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `text` - The text in the comment.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by application to signal an error.

### processingInstruction

    public void processingInstruction(java.lang.String target,
                                      org.apache.xerces.xni.XMLString data,
                                      org.apache.xerces.xni.Augmentations augs)
                               throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  A processing instruction. Processing instructions consist of a target name and, optionally, text data. The data is only meaningful to the application.

  Typically, a processing instruction's data will contain a series of pseudo-attributes. These pseudo-attributes follow the form of element attributes but are not parsed or presented to the application as anything other than text. The application is responsible for parsing the data.

  Specified by:
    `processingInstruction` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `target` - The target.
    `data` - The data or null if none specified.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startElement

    public void startElement(org.apache.xerces.xni.QName element,
                             org.apache.xerces.xni.XMLAttributes attributes,
                             org.apache.xerces.xni.Augmentations augs)
                      throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  The start of an element.
  Specified by:
    `startElement` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `element` - The name of the element.
    `attributes` - The element attributes.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### emptyElement

    public void emptyElement(org.apache.xerces.xni.QName element,
                             org.apache.xerces.xni.XMLAttributes attributes,
                             org.apache.xerces.xni.Augmentations augs)
                      throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  An empty element.
  Specified by:
    `emptyElement` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `element` - The name of the element.
    `attributes` - The element attributes.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endElement

    public void endElement(org.apache.xerces.xni.QName element,
                           org.apache.xerces.xni.Augmentations augs)
                    throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  The end of an element.
  Specified by:
    `endElement` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `element` - The name of the element.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startGeneralEntity

    public void startGeneralEntity(java.lang.String name,
                                   org.apache.xerces.xni.XMLResourceIdentifier resId,
                                   java.lang.String encoding,
                                   org.apache.xerces.xni.Augmentations augs)
                            throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  This method notifies the start of a general entity.

  Note: This method is not called for entity references appearing as part of attribute values.

  Specified by:
    `startGeneralEntity` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `name` - The name of the general entity.
    `identifier` - The resource identifier.
    `encoding` - The auto-detected IANA encoding name of the entity stream. This value will be null in those situations where the entity encoding is not auto-detected (e.g. internal entities or a document entity that is parsed from a java.io.Reader).
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### textDecl

    public void textDecl(java.lang.String version,
                         java.lang.String encoding,
                         org.apache.xerces.xni.Augmentations augs)
                  throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Notifies of the presence of a TextDecl line in an entity. If present, this method will be called immediately following the startEntity call.

  Note: This method will never be called for the document entity; it is only called for external general entities referenced in document content.

  Note: This method is not called for entity references appearing as part of attribute values.

  Specified by:
    `textDecl` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `version` - The XML version, or null if not specified.
    `encoding` - The IANA encoding name of the entity.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endGeneralEntity

    public void endGeneralEntity(java.lang.String name,
                                 org.apache.xerces.xni.Augmentations augs)
                          throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  This method notifies the end of a general entity.

  Note: This method is not called for entity references appearing as part of attribute values.

  Specified by:
    `endGeneralEntity` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `name` - The name of the entity.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### characters

    public void characters(org.apache.xerces.xni.XMLString text,
                           org.apache.xerces.xni.Augmentations augs)
                    throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Character content.
  Specified by:
    `characters` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `text` - The content.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### ignorableWhitespace

    public void ignorableWhitespace(org.apache.xerces.xni.XMLString text,
                                    org.apache.xerces.xni.Augmentations augs)
                             throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Ignorable whitespace. For this method to be called, the document source must have some way of determining that the text containing only whitespace characters should be considered ignorable. For example, the validator can determine if a length of whitespace characters in the document are ignorable based on the element content model.
  Specified by:
    `ignorableWhitespace` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `text` - The ignorable whitespace.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startCDATA

    public void startCDATA(org.apache.xerces.xni.Augmentations augs)
                    throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  The start of a CDATA section.
  Specified by:
    `startCDATA` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endCDATA

    public void endCDATA(org.apache.xerces.xni.Augmentations augs)
                  throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  The end of a CDATA section.
  Specified by:
    `endCDATA` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endDocument

    public void endDocument(org.apache.xerces.xni.Augmentations augs)
                     throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  The end of the document.
  Specified by:
    `endDocument` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### setDocumentSource

    public void setDocumentSource(org.apache.xerces.xni.parser.XMLDocumentSource source)

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Sets the document source.
  Specified by:
    `setDocumentSource` in interface `org.apache.xerces.xni.XMLDocumentHandler`

### getDocumentSource

    public org.apache.xerces.xni.parser.XMLDocumentSource getDocumentSource()

  Description copied from interface: `org.apache.xerces.xni.XMLDocumentHandler`
  Returns the document source.
  Specified by:
    `getDocumentSource` in interface `org.apache.xerces.xni.XMLDocumentHandler`

### attributeDecl

    public void attributeDecl(java.lang.String elementName,
                              java.lang.String attributeName,
                              java.lang.String type,
                              java.lang.String[] enumeration,
                              java.lang.String defaultType,
                              org.apache.xerces.xni.XMLString defaultValue,
                              org.apache.xerces.xni.XMLString nonNormalizedDefaultValue,
                              org.apache.xerces.xni.Augmentations augmentations)
                       throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  An attribute declaration.
  Specified by:
    `attributeDecl` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `elementName` - The name of the element that this attribute is associated with.
    `attributeName` - The name of the attribute.
    `type` - The attribute type. This value will be one of the following: "CDATA", "ENTITY", "ENTITIES", "ENUMERATION", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", or "NOTATION".
    `enumeration` - If the type has the value "ENUMERATION" or "NOTATION", this array holds the allowed attribute values; otherwise, this array is null.
    `defaultType` - The attribute default type. This value will be one of the following: "#FIXED", "#IMPLIED", "#REQUIRED", or null.
    `defaultValue` - The attribute default value, or null if no default value is specified.
    `nonNormalizedDefaultValue` - The attribute default value with no normalization performed, or null if no default value is specified.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### elementDecl

    public void elementDecl(java.lang.String name,
                            java.lang.String contentModel,
                            org.apache.xerces.xni.Augmentations augmentations)
                     throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  An element declaration.
  Specified by:
    `elementDecl` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `name` - The name of the element.
    `contentModel` - The element content model.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endAttlist

    public void endAttlist(org.apache.xerces.xni.Augmentations augmentations)
                    throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The end of an attribute list.
  Specified by:
    `endAttlist` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endConditional

    public void endConditional(org.apache.xerces.xni.Augmentations augmentations)
                        throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The end of a conditional section.
  Specified by:
    `endConditional` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endDTD

    public void endDTD(org.apache.xerces.xni.Augmentations augmentations)
                throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The end of the DTD.
  Specified by:
    `endDTD` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endExternalSubset

    public void endExternalSubset(org.apache.xerces.xni.Augmentations augmentations)
                           throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The end of the DTD external subset.
  Specified by:
    `endExternalSubset` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endParameterEntity

    public void endParameterEntity(java.lang.String name,
                                   org.apache.xerces.xni.Augmentations augmentations)
                            throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  This method notifies the end of a parameter entity. Parameter entity names begin with a '%' character.
  Specified by:
    `endParameterEntity` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `name` - The name of the parameter entity.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### externalEntityDecl

    public void externalEntityDecl(java.lang.String name,
                                   org.apache.xerces.xni.XMLResourceIdentifier identifier,
                                   org.apache.xerces.xni.Augmentations augmentations)
                            throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  An external entity declaration.
  Specified by:
    `externalEntityDecl` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `name` - The name of the entity. Parameter entity names start with '%', whereas the name of a general entity is just the entity name.
    `identifier` - An object containing all location information pertinent to this external entity.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### getDTDSource

    public org.apache.xerces.xni.parser.XMLDTDSource getDTDSource()

  Specified by:
    `getDTDSource` in interface `org.apache.xerces.xni.XMLDTDHandler`

### ignoredCharacters

    public void ignoredCharacters(org.apache.xerces.xni.XMLString text,
                                  org.apache.xerces.xni.Augmentations augmentations)
                           throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Characters within an IGNORE conditional section.
  Specified by:
    `ignoredCharacters` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `text` - The ignored text.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### internalEntityDecl

    public void internalEntityDecl(java.lang.String name,
                                   org.apache.xerces.xni.XMLString text,
                                   org.apache.xerces.xni.XMLString nonNormalizedText,
                                   org.apache.xerces.xni.Augmentations augmentations)
                            throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  An internal entity declaration.
  Specified by:
    `internalEntityDecl` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `name` - The name of the entity. Parameter entity names start with '%', whereas the name of a general entity is just the entity name.
    `text` - The value of the entity.
    `nonNormalizedText` - The non-normalized value of the entity. This value contains the same sequence of characters that was in the internal entity declaration, without any entity references expanded.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### notationDecl

    public void notationDecl(java.lang.String name,
                             org.apache.xerces.xni.XMLResourceIdentifier identifier,
                             org.apache.xerces.xni.Augmentations augmentations)
                      throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  A notation declaration
  Specified by:
    `notationDecl` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `name` - The name of the notation.
    `identifier` - An object containing all location information pertinent to this notation.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### setDTDSource

    public void setDTDSource(org.apache.xerces.xni.parser.XMLDTDSource source)

  Specified by:
    `setDTDSource` in interface `org.apache.xerces.xni.XMLDTDHandler`

### startAttlist

    public void startAttlist(java.lang.String elementName,
                             org.apache.xerces.xni.Augmentations augmentations)
                      throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The start of an attribute list.
  Specified by:
    `startAttlist` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `elementName` - The name of the element that this attribute list is associated with.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startConditional

    public void startConditional(short type,
                                 org.apache.xerces.xni.Augmentations augmentations)
                          throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The start of a conditional section.
  Specified by:
    `startConditional` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `type` - The type of the conditional section. This value will either be CONDITIONAL_INCLUDE or CONDITIONAL_IGNORE.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.
  See Also:
    `XMLDTDHandler.CONDITIONAL_INCLUDE`, `XMLDTDHandler.CONDITIONAL_IGNORE`

### startDTD

    public void startDTD(org.apache.xerces.xni.XMLLocator locator,
                         org.apache.xerces.xni.Augmentations augmentations)
                  throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The start of the DTD.
  Specified by:
    `startDTD` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `locator` - The document locator, or null if the document location cannot be reported during the parsing of the document DTD. However, it is strongly recommended that a locator be supplied that can at least report the base system identifier of the DTD.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startExternalSubset

    public void startExternalSubset(org.apache.xerces.xni.XMLResourceIdentifier identifier,
                                    org.apache.xerces.xni.Augmentations augmentations)
                             throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  The start of the DTD external subset.
  Specified by:
    `startExternalSubset` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `identifier` - The resource identifier.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startParameterEntity

    public void startParameterEntity(java.lang.String name,
                                     org.apache.xerces.xni.XMLResourceIdentifier identifier,
                                     java.lang.String encoding,
                                     org.apache.xerces.xni.Augmentations augmentations)
                              throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  This method notifies of the start of a parameter entity. The parameter entity name start with a '%' character.
  Specified by:
    `startParameterEntity` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `name` - The name of the parameter entity.
    `identifier` - The resource identifier.
    `encoding` - The auto-detected IANA encoding name of the entity stream. This value will be null in those situations where the entity encoding is not auto-detected (e.g. internal parameter entities).
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### unparsedEntityDecl

    public void unparsedEntityDecl(java.lang.String name,
                                   org.apache.xerces.xni.XMLResourceIdentifier identifier,
                                   java.lang.String notation,
                                   org.apache.xerces.xni.Augmentations augmentations)
                            throws org.apache.xerces.xni.XNIException

  Description copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  An unparsed entity declaration.
  Specified by:
    `unparsedEntityDecl` in interface `org.apache.xerces.xni.XMLDTDHandler`
  Following copied from interface: `org.apache.xerces.xni.XMLDTDHandler`
  Parameters:
    `name` - The name of the entity.
    `identifier` - An object containing all location information pertinent to this unparsed entity declaration.
    `notation` - The name of the notation.
    `augmentations` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### getDTDHandler

    public org.apache.xerces.xni.XMLDTDHandler getDTDHandler()

  Description copied from interface: `org.apache.xerces.xni.parser.XMLDTDSource`
  Returns the DTD handler.
  Specified by:
    `getDTDHandler` in interface `org.apache.xerces.xni.parser.XMLDTDSource`

### setDTDHandler

    public void setDTDHandler(org.apache.xerces.xni.XMLDTDHandler handler)

  Description copied from interface: `org.apache.xerces.xni.parser.XMLDTDSource`
  Sets the DTD handler.
  Specified by:
    `setDTDHandler` in interface `org.apache.xerces.xni.parser.XMLDTDSource`

### handleFallbackElement

    protected void handleFallbackElement()

### handleIncludeElement

    protected boolean handleIncludeElement(org.apache.xerces.xni.XMLAttributes attributes)
                                    throws org.apache.xerces.xni.XNIException

### hasXIncludeNamespace

    protected boolean hasXIncludeNamespace(org.apache.xerces.xni.QName element)

  Returns true if the element has the namespace "http://www.w3.org/2003/XInclude"
  Parameters:
    `element` - the element to check
  Returns:
    true if the element has the namespace "http://www.w3.org/2003/XInclude"

### hasXInclude2001Namespace

    protected boolean hasXInclude2001Namespace(org.apache.xerces.xni.QName element)

  Returns true if the element has the namespace "http://www.w3.org/2001/XInclude"
  Parameters:
    `element` - the element to check
  Returns:
    true if the element has the namespace "http://www.w3.org/2001/XInclude"

### isIncludeElement

    protected boolean isIncludeElement(org.apache.xerces.xni.QName element)

  Checks if the element is an <include> element. The element must have the XInclude namespace, and a local name of "include". If the local name is "include" and the namespace name is the old XInclude namespace "http://www.w3.org/2001/XInclude" a warning is issued the first time an element from the old namespace is encountered.
  Parameters:
    `element` - the element to check
  Returns:
    true if the element is an <include> element
  See Also:
    `hasXIncludeNamespace(QName)`

### isFallbackElement

    protected boolean isFallbackElement(org.apache.xerces.xni.QName element)

  Checks if the element is an <fallback> element. The element must have the XInclude namespace, and a local name of "fallback". If the local name is "fallback" and the namespace name is the old XInclude namespace "http://www.w3.org/2001/XInclude" a warning is issued the first time an element from the old namespace is encountered.
  Parameters:
    `element` - the element to check
  Returns:
    true if the element is an <fallback; element
  See Also:
    `hasXIncludeNamespace(QName)`

### sameBaseURIAsIncludeParent

    protected boolean sameBaseURIAsIncludeParent()

  Returns true if the current [base URI] is the same as the [base URI] that was in effect on the include parent. This method should only be called when the current element is a top level included element, i.e. the direct child of a fallback element, or the root elements in an included document. The "include parent" is the element which, in the result infoset, will be the direct parent of the current element.
  Returns:
    true if the [base URIs] are the same string

### searchForRecursiveIncludes

    protected boolean searchForRecursiveIncludes(org.apache.xerces.xni.XMLLocator includedSource)

  Checks if the file indicated by the given XMLLocator has already been included in the current stack.
  Parameters:
    `includedSource` - the source to check for inclusion
  Returns:
    true if the source has already been included

### isTopLevelIncludedItem

    protected boolean isTopLevelIncludedItem()

  Returns true if the current element is a top level included item. This means it's either the child of a fallback element, or the top level item in an included document
  Returns:
    true if the current element is a top level included item

### isTopLevelIncludedItemViaInclude

    protected boolean isTopLevelIncludedItemViaInclude()

### isTopLevelIncludedItemViaFallback

    protected boolean isTopLevelIncludedItemViaFallback()

### processAttributes

    protected org.apache.xerces.xni.XMLAttributes processAttributes(org.apache.xerces.xni.XMLAttributes attributes)

  Processes the XMLAttributes object of startElement() calls. Performs the following tasks:
  - If the element is a top level included item whose [base URI] is different from the [base URI] of the include parent, then an xml:base attribute is added to specify the true [base URI]
  - For all namespace prefixes which are in-scope in an included item, but not in scope in the include parent, a xmlns:prefix attribute is added
  - For all attributes with a type of ENTITY, ENTITIES or NOTATIONS, the notations and unparsed entities are processed as described in the spec, sections 4.5.1 and 4.5.2
  Parameters:
    `attributes` -
  Returns:

### getRelativeBaseURI

    protected java.lang.String getRelativeBaseURI()
                                           throws URI.MalformedURIException

  Returns a URI, relative to the include parent's base URI, of the current [base URI]. For instance, if the current [base URI] was "dir1/dir2/file.xml" and the include parent's [base URI] was "dir/", this would return "dir2/file.xml".
  Returns:
    the relative URI

### modifyAugmentations

    protected org.apache.xerces.xni.Augmentations modifyAugmentations(org.apache.xerces.xni.Augmentations augs)

  Modify the augmentations. Add an [included] infoset item, if the current element is a top level included item.
  Parameters:
    `augs` - the Augmentations to modify.
  Returns:
    the modified Augmentations

### modifyAugmentations

    protected org.apache.xerces.xni.Augmentations modifyAugmentations(org.apache.xerces.xni.Augmentations augs,
                                                                      boolean force)

  Modify the augmentations. Add an [included] infoset item, if `force` is true, or if the current element is a top level included item.
  Parameters:
    `augs` - the Augmentations to modify.
    `force` - whether to force modification
  Returns:
    the modified Augmentations

### getState

    protected int getState(int depth)

### getState

    protected int getState()

### setState

    protected void setState(int state)

### setSawFallback

    protected void setSawFallback(int depth,
                                  boolean val)

  Records that an <fallback> was encountered at the specified depth, as an ancestor of the current element, or as a sibling of an ancestor of the current element.
  Parameters:
    `depth` -
    `val` -

### getSawFallback

    protected boolean getSawFallback(int depth)

  Returns whether an <fallback> was encountered at the specified depth, as an ancestor of the current element, or as a sibling of an ancestor of the current element.
  Parameters:
    `depth` -

### setSawInclude

    protected void setSawInclude(int depth,
                                 boolean val)

  Records that an <include> was encountered at the specified depth, as an ancestor of the current item.
  Parameters:
    `depth` -
    `val` -

### getSawInclude

    protected boolean getSawInclude(int depth)

  Return whether an <include> was encountered at the specified depth, as an ancestor of the current item.
  Parameters:
    `depth` -
  Returns:

### reportResourceError

    protected void reportResourceError(java.lang.String key)

### reportResourceError

    protected void reportResourceError(java.lang.String key,
                                       java.lang.Object[] args)

### reportFatalError

    protected void reportFatalError(java.lang.String key)

### reportFatalError

    protected void reportFatalError(java.lang.String key,
                                    java.lang.Object[] args)

### setParent

    protected void setParent(XIncludeHandler parent)

  Set the parent of this XIncludeHandler in the tree
  Parameters:
    `parent` -

### isRootDocument

    protected boolean isRootDocument()

### addUnparsedEntity

    protected void addUnparsedEntity(java.lang.String name,
                                     org.apache.xerces.xni.XMLResourceIdentifier identifier,
                                     java.lang.String notation,
                                     org.apache.xerces.xni.Augmentations augmentations)

  Caches an unparsed entity.
  Parameters:
    `name` - the name of the unparsed entity
    `identifier` - the location of the unparsed entity
    `augmentations` - any Augmentations that were on the original unparsed entity declaration

### addNotation

    protected void addNotation(java.lang.String name,
                               org.apache.xerces.xni.XMLResourceIdentifier identifier,
                               org.apache.xerces.xni.Augmentations augmentations)

  Caches a notation.
  Parameters:
    `name` - the name of the notation
    `identifier` - the location of the notation
    `augmentations` - any Augmentations that were on the original notation declaration

### checkUnparsedEntity

    protected void checkUnparsedEntity(java.lang.String entName)

  Checks if an UnparsedEntity with the given name was declared in the DTD of the document for the current pipeline. If so, then the notation for the UnparsedEntity is checked. If that turns out okay, then the UnparsedEntity is passed to the root pipeline to be checked for conflicts, and sent to the root DTDHandler.
  Parameters:
    `entName` - the name of the UnparsedEntity to check

### checkNotation

    protected void checkNotation(java.lang.String notName)

  Checks if a Notation with the given name was declared in the DTD of the document for the current pipeline. If so, that Notation is passed to the root pipeline to be checked for conflicts, and sent to the root DTDHandler
  Parameters:
    `notName` - the name of the Notation to check

### checkAndSendUnparsedEntity

    protected void checkAndSendUnparsedEntity(XIncludeHandler.UnparsedEntity ent)

  The purpose of this method is to check if an UnparsedEntity conflicts with a previously declared entity in the current pipeline stack. If there is no conflict, the UnparsedEntity is sent by the root pipeline.
  Parameters:
    `ent` - the UnparsedEntity to check for conflicts

### checkAndSendNotation

    protected void checkAndSendNotation(XIncludeHandler.Notation not)

  The purpose of this method is to check if a Notation conflicts with a previously declared notation in the current pipeline stack. If there is no conflict, the Notation is sent by the root pipeline.
  Parameters:
    `not` - the Notation to check for conflicts

### copyFeatures

    protected void copyFeatures(org.apache.xerces.xni.parser.XMLComponentManager from,
                                ParserConfigurationSettings to)

### copyFeatures

    protected void copyFeatures(org.apache.xerces.xni.parser.XMLComponentManager from,
                                org.apache.xerces.xni.parser.XMLParserConfiguration to)

### saveBaseURI

    protected void saveBaseURI()

  Saves the current base URI to the top of the stack.

### restoreBaseURI

    protected void restoreBaseURI()

  Discards the URIs at the top of the stack, and restores the ones beneath it.

### getBaseURI

    public java.lang.String getBaseURI(int depth)

  Gets the base URI that was in use at that depth
  Parameters:
    `depth` -
  Returns:
    the base URI

### getRelativeURI

    public java.lang.String getRelativeURI(int depth)
                                    throws URI.MalformedURIException

  Returns a relative URI, which when resolved against the base URI at the specified depth, will create the current base URI. This is accomplished by merged the literal system IDs.
  Parameters:
    `depth` - the depth at which to start creating the relative URI
  Returns:
    a relative URI to convert the base URI at the given depth to the current base URI

### processXMLBaseAttributes

    protected void processXMLBaseAttributes(org.apache.xerces.xni.XMLAttributes attributes)

  Search for a xml:base attribute, and if one is found, put the new base URI into effect.

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