- All Implemented Interfaces:
ContentHandler,DTDHandler,EntityResolver,ErrorHandler,DeclHandler,EntityResolver2,LexicalHandler
LexicalHandler, DeclHandler, and
EntityResolver2 extensions. Except for overriding the
original SAX1 resolveEntity()
method the added handler methods just return. Subclassers may
override everything on a method-by-method basis.
Note: this class might yet learn that the
ContentHandler.setDocumentLocator() call might be passed a
Locator2 object, and that the
ContentHandler.startElement() call might be passed a
Attributes2 object.
- Since:
- 1.5, SAX 2.0 (extensions 1.1 alpha)
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoidReport an attribute type declaration.voidcomment(char[] ch, int start, int length) Report an XML comment anywhere in the document.voidelementDecl(String name, String model) Report an element type declaration.voidendCDATA()Report the end of a CDATA section.voidendDTD()Report the end of DTD declarations.voidReport the end of an entity.voidexternalEntityDecl(String name, String publicId, String systemId) Report a parsed external entity declaration.getExternalSubset(String name, String baseURI) Tells the parser that if no external subset has been declared in the document text, none should be used.voidinternalEntityDecl(String name, String value) Report an internal entity declaration.resolveEntity(String publicId, String systemId) InvokesEntityResolver2.resolveEntity()with null entity name and base URI.resolveEntity(String name, String publicId, String baseURI, String systemId) Tells the parser to resolve the systemId against the baseURI and read the entity text from that resulting absolute URI.voidReport the start of a CDATA section.voidReport the start of DTD declarations, if any.voidstartEntity(String name) Report the beginning of some internal and external XML entities.Methods declared in class org.xml.sax.helpers.DefaultHandler
characters, endDocument, endElement, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startElement, startPrefixMapping, unparsedEntityDecl, warningMethods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods declared in interface org.xml.sax.ContentHandler
declaration
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Constructor Details
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DefaultHandler2
public DefaultHandler2()Constructs a handler which ignores all parsing events.
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Method Details
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startCDATA
Description copied from interface:LexicalHandlerReport the start of a CDATA section.The contents of the CDATA section will be reported through the regular
charactersevent; this event is intended only to report the boundary.- Specified by:
startCDATAin interfaceLexicalHandler- Throws:
SAXException- The application may raise an exception.- See Also:
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endCDATA
Description copied from interface:LexicalHandlerReport the end of a CDATA section.- Specified by:
endCDATAin interfaceLexicalHandler- Throws:
SAXException- The application may raise an exception.- See Also:
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startDTD
Description copied from interface:LexicalHandlerReport the start of DTD declarations, if any.This method is intended to report the beginning of the DOCTYPE declaration; if the document has no DOCTYPE declaration, this method will not be invoked.
All declarations reported through
DTDHandlerorDeclHandlerevents must appear between the startDTD andendDTDevents. Declarations are assumed to belong to the internal DTD subset unless they appear betweenstartEntityandendEntityevents. Comments and processing instructions from the DTD should also be reported between the startDTD and endDTD events, in their original order of (logical) occurrence; they are not required to appear in their correct locations relative to DTDHandler or DeclHandler events, however.Note that the start/endDTD events will appear within the start/endDocument events from ContentHandler and before the first
startElementevent.- Specified by:
startDTDin interfaceLexicalHandler- Parameters:
name- The document type name.publicId- The declared public identifier for the external DTD subset, or null if none was declared.systemId- The declared system identifier for the external DTD subset, or null if none was declared. (Note that this is not resolved against the document base URI.)- Throws:
SAXException- The application may raise an exception.- See Also:
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endDTD
Description copied from interface:LexicalHandlerReport the end of DTD declarations.This method is intended to report the end of the DOCTYPE declaration; if the document has no DOCTYPE declaration, this method will not be invoked.
- Specified by:
endDTDin interfaceLexicalHandler- Throws:
SAXException- The application may raise an exception.- See Also:
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startEntity
Description copied from interface:LexicalHandlerReport the beginning of some internal and external XML entities.The reporting of parameter entities (including the external DTD subset) is optional, and SAX2 drivers that report LexicalHandler events may not implement it; you can use the
http://xml.org/sax/features/lexical-handler/parameter-entitiesfeature to query or control the reporting of parameter entities.General entities are reported with their regular names, parameter entities have '%' prepended to their names, and the external DTD subset has the pseudo-entity name "[dtd]".
When a SAX2 driver is providing these events, all other events must be properly nested within start/end entity events. There is no additional requirement that events from
DeclHandlerorDTDHandlerbe properly ordered.Note that skipped entities will be reported through the
skippedEntityevent, which is part of the ContentHandler interface.Because of the streaming event model that SAX uses, some entity boundaries cannot be reported under any circumstances:
- general entities within attribute values
- parameter entities within declarations
These will be silently expanded, with no indication of where the original entity boundaries were.
Note also that the boundaries of character references (which are not really entities anyway) are not reported.
All start/endEntity events must be properly nested.
- Specified by:
startEntityin interfaceLexicalHandler- Parameters:
name- The name of the entity. If it is a parameter entity, the name will begin with '%', and if it is the external DTD subset, it will be "[dtd]".- Throws:
SAXException- The application may raise an exception.- See Also:
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endEntity
Description copied from interface:LexicalHandlerReport the end of an entity.- Specified by:
endEntityin interfaceLexicalHandler- Parameters:
name- The name of the entity that is ending.- Throws:
SAXException- The application may raise an exception.- See Also:
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comment
Description copied from interface:LexicalHandlerReport an XML comment anywhere in the document.This callback will be used for comments inside or outside the document element, including comments in the external DTD subset (if read). Comments in the DTD must be properly nested inside start/endDTD and start/endEntity events (if used).
- Specified by:
commentin interfaceLexicalHandler- Parameters:
ch- An array holding the characters in the comment.start- The starting position in the array.length- The number of characters to use from the array.- Throws:
SAXException- The application may raise an exception.
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attributeDecl
public void attributeDecl(String eName, String aName, String type, String mode, String value) throws SAXException Description copied from interface:DeclHandlerReport an attribute type declaration.Only the effective (first) declaration for an attribute will be reported. The type will be one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", a parenthesized token group with the separator "|" and all whitespace removed, or the word "NOTATION" followed by a space followed by a parenthesized token group with all whitespace removed.
The value will be the value as reported to applications, appropriately normalized and with entity and character references expanded.
- Specified by:
attributeDeclin interfaceDeclHandler- Parameters:
eName- The name of the associated element.aName- The name of the attribute.type- A string representing the attribute type.mode- A string representing the attribute defaulting mode ("#IMPLIED", "#REQUIRED", or "#FIXED") or null if none of these applies.value- A string representing the attribute's default value, or null if there is none.- Throws:
SAXException- The application may raise an exception.
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elementDecl
Description copied from interface:DeclHandlerReport an element type declaration.The content model will consist of the string "EMPTY", the string "ANY", or a parenthesised group, optionally followed by an occurrence indicator. The model will be normalized so that all parameter entities are fully resolved and all whitespace is removed, and will include the enclosing parentheses. Other normalization (such as removing redundant parentheses or simplifying occurrence indicators) is at the discretion of the parser.
- Specified by:
elementDeclin interfaceDeclHandler- Parameters:
name- The element type name.model- The content model as a normalized string.- Throws:
SAXException- The application may raise an exception.
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externalEntityDecl
Description copied from interface:DeclHandlerReport a parsed external entity declaration.Only the effective (first) declaration for each entity will be reported.
If the system identifier is a URL, the parser must resolve it fully before passing it to the application.
- Specified by:
externalEntityDeclin interfaceDeclHandler- Parameters:
name- The name of the entity. If it is a parameter entity, the name will begin with '%'.publicId- The entity's public identifier, or null if none was given.systemId- The entity's system identifier.- Throws:
SAXException- The application may raise an exception.- See Also:
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internalEntityDecl
Description copied from interface:DeclHandlerReport an internal entity declaration.Only the effective (first) declaration for each entity will be reported. All parameter entities in the value will be expanded, but general entities will not.
- Specified by:
internalEntityDeclin interfaceDeclHandler- Parameters:
name- The name of the entity. If it is a parameter entity, the name will begin with '%'.value- The replacement text of the entity.- Throws:
SAXException- The application may raise an exception.- See Also:
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getExternalSubset
Tells the parser that if no external subset has been declared in the document text, none should be used.- Specified by:
getExternalSubsetin interfaceEntityResolver2- Parameters:
name- Identifies the document root element. This name comes from a DOCTYPE declaration (where available) or from the actual root element.baseURI- The document's base URI, serving as an additional hint for selecting the external subset. This is always an absolute URI, unless it is null because the XMLReader was given an InputSource without one.- Returns:
- An InputSource object describing the new external subset to be used by the parser, or null to indicate that no external subset is provided.
- Throws:
SAXException- Any SAX exception, possibly wrapping another exception.IOException- Probably indicating a failure to create a new InputStream or Reader, or an illegal URL.
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resolveEntity
public InputSource resolveEntity(String name, String publicId, String baseURI, String systemId) throws SAXException, IOException Tells the parser to resolve the systemId against the baseURI and read the entity text from that resulting absolute URI. Note that because the olderDefaultHandler.resolveEntity(), method is overridden to call this one, this method may sometimes be invoked with null name and baseURI, and with the systemId already absolutized.- Specified by:
resolveEntityin interfaceEntityResolver2- Parameters:
name- Identifies the external entity being resolved. Either "[dtd]" for the external subset, or a name starting with "%" to indicate a parameter entity, or else the name of a general entity. This is never null when invoked by a SAX2 parser.publicId- The public identifier of the external entity being referenced (normalized as required by the XML specification), or null if none was supplied.baseURI- The URI with respect to which relative systemIDs are interpreted. This is always an absolute URI, unless it is null (likely because the XMLReader was given an InputSource without one). This URI is defined by the XML specification to be the one associated with the "<" starting the relevant declaration.systemId- The system identifier of the external entity being referenced; either a relative or absolute URI. This is never null when invoked by a SAX2 parser; only declared entities, and any external subset, are resolved by such parsers.- Returns:
- An InputSource object describing the new input source to be used by the parser. Returning null directs the parser to resolve the system ID against the base URI and open a connection to resulting URI.
- Throws:
SAXException- Any SAX exception, possibly wrapping another exception.IOException- Probably indicating a failure to create a new InputStream or Reader, or an illegal URL.
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resolveEntity
InvokesEntityResolver2.resolveEntity()with null entity name and base URI. You only need to override that method to use this class.- Specified by:
resolveEntityin interfaceEntityResolver- Overrides:
resolveEntityin classDefaultHandler- Parameters:
publicId- The public identifier, or null if none is available.systemId- The system identifier provided in the XML document.- Returns:
- The new input source, or null to require the default behaviour.
- Throws:
SAXException- Any SAX exception, possibly wrapping another exception.IOException- If there is an error setting up the new input source.- See Also:
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