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## org.xml.sax.helpers
Class ParserAdapter

    java.lang.Object
      |
      +--org.xml.sax.helpers.ParserAdapter

public class ParserAdapter
extends java.lang.Object
implements XMLReader, DocumentHandler

Adapt a SAX1 Parser as a SAX2 XMLReader.

> This module, both source code and documentation, is in the Public Domain, and comes with NO WARRANTY. See http://www.saxproject.org for further information.

This class wraps a SAX1 Parser and makes it act as a SAX2 XMLReader, with feature, property, and Namespace support. Note that it is not possible to report skippedEntity events, since SAX1 does not make that information available.

This adapter does not test for duplicate Namespace-qualified attribute names.

Since:
  SAX 2.0
See Also:
  `XMLReaderAdapter`, `XMLReader`, `Parser`

Constructor Summary
`ParserAdapter()` Construct a new parser adapter.
`ParserAdapter(Parser parser)` Construct a new parser adapter.

Method Summary
`void` | `characters(char[] ch, int start, int length)` Adapter implementation method; do not call.
`void` | `endDocument()` Adapter implementation method; do not call.
`void` | `endElement(java.lang.String qName)` Adapter implementation method; do not call.
`ContentHandler` | `getContentHandler()` Return the current content handler.
`DTDHandler` | `getDTDHandler()` Return the current DTD handler.
`EntityResolver` | `getEntityResolver()` Return the current entity resolver.
`ErrorHandler` | `getErrorHandler()` Return the current error handler.
`boolean` | `getFeature(java.lang.String name)` Check a parser feature flag.
`java.lang.Object` | `getProperty(java.lang.String name)` Get a parser property.
`void` | `ignorableWhitespace(char[] ch, int start, int length)` Adapter implementation method; do not call.
`void` | `parse(InputSource input)` Parse an XML document.
`void` | `parse(java.lang.String systemId)` Parse an XML document.
`void` | `processingInstruction(java.lang.String target, java.lang.String data)` Adapter implementation method; do not call.
`void` | `setContentHandler(ContentHandler handler)` Set the content handler.
`void` | `setDocumentLocator(Locator locator)` Adapter implementation method; do not call.
`void` | `setDTDHandler(DTDHandler handler)` Set the DTD handler.
`void` | `setEntityResolver(EntityResolver resolver)` Set the entity resolver.
`void` | `setErrorHandler(ErrorHandler handler)` Set the error handler.
`void` | `setFeature(java.lang.String name, boolean value)` Set a feature flag for the parser.
`void` | `setProperty(java.lang.String name, java.lang.Object value)` Set a parser property.
`void` | `startDocument()` Adapter implementation method; do not call.
`void` | `startElement(java.lang.String qName, AttributeList qAtts)` Adapter implementation method; do not call.

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

Constructor Detail

### ParserAdapter

    public ParserAdapter()
                  throws SAXException

  Construct a new parser adapter.

  Use the "org.xml.sax.parser" property to locate the embedded SAX1 driver.

  Throws:
    SAXException - If the embedded driver cannot be instantiated or if the org.xml.sax.parser property is not specified.

### ParserAdapter

    public ParserAdapter(Parser parser)

  Construct a new parser adapter.

  Note that the embedded parser cannot be changed once the adapter is created; to embed a different parser, allocate a new ParserAdapter.

  Parameters:
    `parser` - The SAX1 parser to embed.
  Throws:
    java.lang.NullPointerException - If the parser parameter is null.

Method Detail

### setFeature

    public void setFeature(java.lang.String name,
                           boolean value)
                    throws SAXNotRecognizedException,
                           SAXNotSupportedException

  Set a feature flag for the parser.

  The only features recognized are namespaces and namespace-prefixes.

  Specified by:
    setFeature in interface XMLReader
  Parameters:
    `name` - The feature name, as a complete URI.
    `value` - The requested feature value.
  Throws:
    SAXNotRecognizedException - If the feature can't be assigned or retrieved.
    SAXNotSupportedException - If the feature can't be assigned that value.
  See Also:
    `XMLReader.setFeature(java.lang.String, boolean)`

### getFeature

    public boolean getFeature(java.lang.String name)
                       throws SAXNotRecognizedException,
                              SAXNotSupportedException

  Check a parser feature flag.

  The only features recognized are namespaces and namespace-prefixes.

  Specified by:
    getFeature in interface XMLReader
  Parameters:
    `name` - The feature name, as a complete URI.
  Returns:
    The current feature value.
  Throws:
    SAXNotRecognizedException - If the feature value can't be assigned or retrieved.
    SAXNotSupportedException - If the feature is not currently readable.
  See Also:
    `XMLReader.setFeature(java.lang.String, boolean)`

### setProperty

    public void setProperty(java.lang.String name,
                            java.lang.Object value)
                     throws SAXNotRecognizedException,
                            SAXNotSupportedException

  Set a parser property.

  No properties are currently recognized.

  Specified by:
    setProperty in interface XMLReader
  Parameters:
    `name` - The property name.
    `value` - The property value.
  Throws:
    SAXNotRecognizedException - If the property value can't be assigned or retrieved.
    SAXNotSupportedException - If the property can't be assigned that value.
  See Also:
    `XMLReader.setProperty(java.lang.String, java.lang.Object)`

### getProperty

    public java.lang.Object getProperty(java.lang.String name)
                                 throws SAXNotRecognizedException,
                                        SAXNotSupportedException

  Get a parser property.

  No properties are currently recognized.

  Specified by:
    getProperty in interface XMLReader
  Parameters:
    `name` - The property name.
  Returns:
    The property value.
  Throws:
    SAXNotRecognizedException - If the property value can't be assigned or retrieved.
    SAXNotSupportedException - If the property value is not currently readable.
  See Also:
    `XMLReader.getProperty(java.lang.String)`

### setEntityResolver

    public void setEntityResolver(EntityResolver resolver)

  Set the entity resolver.
  Specified by:
    setEntityResolver in interface XMLReader
  Parameters:
    `resolver` - The new entity resolver.
  See Also:
    `XMLReader.setEntityResolver(org.xml.sax.EntityResolver)`

### getEntityResolver

    public EntityResolver getEntityResolver()

  Return the current entity resolver.
  Specified by:
    getEntityResolver in interface XMLReader
  Returns:
    The current entity resolver, or null if none was supplied.
  See Also:
    `XMLReader.getEntityResolver()`

### setDTDHandler

    public void setDTDHandler(DTDHandler handler)

  Set the DTD handler.
  Specified by:
    setDTDHandler in interface XMLReader
  Parameters:
    `handler` - the new DTD handler
  See Also:
    `XMLReader.setEntityResolver(org.xml.sax.EntityResolver)`

### getDTDHandler

    public DTDHandler getDTDHandler()

  Return the current DTD handler.
  Specified by:
    getDTDHandler in interface XMLReader
  Returns:
    the current DTD handler, or null if none was supplied
  See Also:
    `XMLReader.getEntityResolver()`

### setContentHandler

    public void setContentHandler(ContentHandler handler)

  Set the content handler.
  Specified by:
    setContentHandler in interface XMLReader
  Parameters:
    `handler` - the new content handler
  See Also:
    `XMLReader.setEntityResolver(org.xml.sax.EntityResolver)`

### getContentHandler

    public ContentHandler getContentHandler()

  Return the current content handler.
  Specified by:
    getContentHandler in interface XMLReader
  Returns:
    The current content handler, or null if none was supplied.
  See Also:
    `XMLReader.getEntityResolver()`

### setErrorHandler

    public void setErrorHandler(ErrorHandler handler)

  Set the error handler.
  Specified by:
    setErrorHandler in interface XMLReader
  Parameters:
    `handler` - The new error handler.
  See Also:
    `XMLReader.setEntityResolver(org.xml.sax.EntityResolver)`

### getErrorHandler

    public ErrorHandler getErrorHandler()

  Return the current error handler.
  Specified by:
    getErrorHandler in interface XMLReader
  Returns:
    The current error handler, or null if none was supplied.
  See Also:
    `XMLReader.getEntityResolver()`

### parse

    public void parse(java.lang.String systemId)
               throws java.io.IOException,
                      SAXException

  Parse an XML document.
  Specified by:
    parse in interface XMLReader
  Parameters:
    `systemId` - The absolute URL of the document.
  Throws:
    java.io.IOException - If there is a problem reading the raw content of the document.
    SAXException - If there is a problem processing the document.
  See Also:
    `parse(org.xml.sax.InputSource)`, `Parser.parse(java.lang.String)`

### parse

    public void parse(InputSource input)
               throws java.io.IOException,
                      SAXException

  Parse an XML document.
  Specified by:
    parse in interface XMLReader
  Parameters:
    `input` - An input source for the document.
  Throws:
    java.io.IOException - If there is a problem reading the raw content of the document.
    SAXException - If there is a problem processing the document.
  See Also:
    `parse(java.lang.String)`, `Parser.parse(org.xml.sax.InputSource)`

### setDocumentLocator

    public void setDocumentLocator(Locator locator)

  Adapter implementation method; do not call. Adapt a SAX1 document locator event.
  Specified by:
    setDocumentLocator in interface DocumentHandler
  Parameters:
    `locator` - A document locator.
  See Also:
    `ContentHandler.setDocumentLocator(org.xml.sax.Locator)`

### startDocument

    public void startDocument()
                       throws SAXException

  Adapter implementation method; do not call. Adapt a SAX1 start document event.
  Specified by:
    startDocument in interface DocumentHandler
  Throws:
    SAXException - The client may raise a processing exception.
  See Also:
    `DocumentHandler.startDocument()`

### endDocument

    public void endDocument()
                     throws SAXException

  Adapter implementation method; do not call. Adapt a SAX1 end document event.
  Specified by:
    endDocument in interface DocumentHandler
  Throws:
    SAXException - The client may raise a processing exception.
  See Also:
    `DocumentHandler.endDocument()`

### startElement

    public void startElement(java.lang.String qName,
                             AttributeList qAtts)
                      throws SAXException

  Adapter implementation method; do not call. Adapt a SAX1 startElement event.

  If necessary, perform Namespace processing.

  Specified by:
    startElement in interface DocumentHandler
  Parameters:
    `qName` - The qualified (prefixed) name.
    `qAtts` - The XML attribute list (with qnames).
  Throws:
    SAXException - The client may raise a processing exception.

### endElement

    public void endElement(java.lang.String qName)
                    throws SAXException

  Adapter implementation method; do not call. Adapt a SAX1 end element event.
  Specified by:
    endElement in interface DocumentHandler
  Parameters:
    `qName` - The qualified (prefixed) name.
  Throws:
    SAXException - The client may raise a processing exception.
  See Also:
    `DocumentHandler.endElement(java.lang.String)`

### characters

    public void characters(char[] ch,
                           int start,
                           int length)
                    throws SAXException

  Adapter implementation method; do not call. Adapt a SAX1 characters event.
  Specified by:
    characters in interface DocumentHandler
  Parameters:
    `ch` - An array of characters.
    `start` - The starting position in the array.
    `length` - The number of characters to use.
  Throws:
    SAXException - The client may raise a processing exception.
  See Also:
    `DocumentHandler.characters(char[], int, int)`

### ignorableWhitespace

    public void ignorableWhitespace(char[] ch,
                                    int start,
                                    int length)
                             throws SAXException

  Adapter implementation method; do not call. Adapt a SAX1 ignorable whitespace event.
  Specified by:
    ignorableWhitespace in interface DocumentHandler
  Parameters:
    `ch` - An array of characters.
    `start` - The starting position in the array.
    `length` - The number of characters to use.
  Throws:
    SAXException - The client may raise a processing exception.
  See Also:
    `DocumentHandler.ignorableWhitespace(char[], int, int)`

### processingInstruction

    public void processingInstruction(java.lang.String target,
                                      java.lang.String data)
                               throws SAXException

  Adapter implementation method; do not call. Adapt a SAX1 processing instruction event.
  Specified by:
    processingInstruction in interface DocumentHandler
  Parameters:
    `target` - The processing instruction target.
    `data` - The remainder of the processing instruction
  Throws:
    SAXException - The client may raise a processing exception.
  See Also:
    `DocumentHandler.processingInstruction(java.lang.String, java.lang.String)`

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Copyright © 2006 Apache XML Project. All Rights Reserved.