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DefaultHandler2


org.xml.sax.ext

Class DefaultHandler2

    • Constructor Detail

      • DefaultHandler2

        public DefaultHandler2()
        Constructs a handler which ignores all parsing events.
    • Method Detail

      • startDTD

        public void startDTD(String name,
                    String publicId,
                    String systemId)
                      throws SAXException
        Description copied from interface: LexicalHandler
        Report 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 DTDHandler or DeclHandler events must appear between the startDTD and endDTD events. Declarations are assumed to belong to the internal DTD subset unless they appear between startEntity and endEntity events. 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 startElement event.

        Specified by:
        startDTD in interface LexicalHandler
        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:
        LexicalHandler.endDTD(), LexicalHandler.startEntity(java.lang.String)
      • startEntity

        public void startEntity(String name)
                         throws SAXException
        Description copied from interface: LexicalHandler
        Report 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-entities feature 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 DeclHandler or DTDHandler be properly ordered.

        Note that skipped entities will be reported through the skippedEntity event, 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:
        startEntity in interface LexicalHandler
        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:
        LexicalHandler.endEntity(java.lang.String), DeclHandler.internalEntityDecl(java.lang.String, java.lang.String), DeclHandler.externalEntityDecl(java.lang.String, java.lang.String, java.lang.String)
      • comment

        public void comment(char[] ch,
                   int start,
                   int length)
                     throws SAXException
        Description copied from interface: LexicalHandler
        Report 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:
        comment in interface LexicalHandler
        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.
      • attributeDecl

        public void attributeDecl(String eName,
                         String aName,
                         String type,
                         String mode,
                         String value)
                           throws SAXException
        Description copied from interface: DeclHandler
        Report 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:
        attributeDecl in interface DeclHandler
        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.
      • elementDecl

        public void elementDecl(String name,
                       String model)
                         throws SAXException
        Description copied from interface: DeclHandler
        Report 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:
        elementDecl in interface DeclHandler
        Parameters:
        name - The element type name.
        model - The content model as a normalized string.
        Throws:
        SAXException - The application may raise an exception.
      • getExternalSubset

        public InputSource getExternalSubset(String name,
                                    String baseURI)
                                      throws SAXException,
                                             IOException
        Tells the parser that if no external subset has been declared in the document text, none should be used.
        Specified by:
        getExternalSubset in interface EntityResolver2
        Parameters:
        name - Identifies the document root element. This name comes from a DOCTYPE declaration (where available) or from the actual root element. The parameter is ignored.
        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. The parameter is ignored.
        Returns:
        null (always).
        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.
      • 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 older DefaultHandler.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:
        resolveEntity in interface EntityResolver2
        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.
        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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