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JavaTM 2 Platform Std. Ed. v1.4.2

javax.xml.parsers
Class DocumentBuilder

java.lang.Object
  extended byjavax.xml.parsers.DocumentBuilder

public abstract class DocumentBuilder
extends Object

Defines the API to obtain DOM Document instances from an XML document. Using this class, an application programmer can obtain a Document from XML.

An instance of this class can be obtained from the DocumentBuilderFactory.newDocumentBuilder method. Once an instance of this class is obtained, XML can be parsed from a variety of input sources. These input sources are InputStreams, Files, URLs, and SAX InputSources.

Note that this class reuses several classes from the SAX API. This does not require that the implementor of the underlying DOM implementation use a SAX parser to parse XML document into a Document. It merely requires that the implementation communicate with the application using these existing APIs.

An implementation of DocumentBuilder is NOT guaranteed to behave as per the specification if it is used concurrently by two or more threads. It is recommended to have one instance of the DocumentBuilder per thread or it is upto the application to make sure about the use of DocumentBuilder from more than one thread.

Since:
JAXP 1.0

Constructor Summary
protected DocumentBuilder()
           
 
Method Summary
abstract  DOMImplementation getDOMImplementation()
          Obtain an instance of a DOMImplementation object.
abstract  boolean isNamespaceAware()
          Indicates whether or not this parser is configured to understand namespaces.
abstract  boolean isValidating()
          Indicates whether or not this parser is configured to validate XML documents.
abstract  Document newDocument()
          Obtain a new instance of a DOM Document object to build a DOM tree with.
 Document parse(File f)
          Parse the content of the given file as an XML document and return a new DOM Document object.
abstract  Document parse(InputSource is)
          Parse the content of the given input source as an XML document and return a new DOM Document object.
 Document parse(InputStream is)
          Parse the content of the given InputStream as an XML document and return a new DOM Document object.
 Document parse(InputStream is, String systemId)
          Parse the content of the given InputStream as an XML document and return a new DOM Document object.
 Document parse(String uri)
          Parse the content of the given URI as an XML document and return a new DOM Document object.
abstract  void setEntityResolver(EntityResolver er)
          Specify the EntityResolver to be used to resolve entities present in the XML document to be parsed.
abstract  void setErrorHandler(ErrorHandler eh)
          Specify the ErrorHandler to be used to report errors present in the XML document to be parsed.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

DocumentBuilder

protected DocumentBuilder()
Method Detail

parse

public Document parse(InputStream is)
               throws SAXException,
                      IOException
Parse the content of the given InputStream as an XML document and return a new DOM Document object.

Parameters:
is - InputStream containing the content to be parsed.
Throws:
IOException - If any IO errors occur.
SAXException - If any parse errors occur.
IllegalArgumentException - If the InputStream is null
See Also:
DocumentHandler

parse

public Document parse(InputStream is,
                      String systemId)
               throws SAXException,
                      IOException
Parse the content of the given InputStream as an XML document and return a new DOM Document object.

Parameters:
is - InputStream containing the content to be parsed.
systemId - Provide a base for resolving relative URIs.
Returns:
A new DOM Document object.
Throws:
IOException - If any IO errors occur.
SAXException - If any parse errors occur.
IllegalArgumentException - If the InputStream is null.
See Also:
DocumentHandler

parse

public Document parse(String uri)
               throws SAXException,
                      IOException
Parse the content of the given URI as an XML document and return a new DOM Document object.

Parameters:
uri - The location of the content to be parsed.
Returns:
A new DOM Document object.
Throws:
IOException - If any IO errors occur.
SAXException - If any parse errors occur.
IllegalArgumentException - If the URI is null.
See Also:
DocumentHandler

parse

public Document parse(File f)
               throws SAXException,
                      IOException
Parse the content of the given file as an XML document and return a new DOM Document object.

Parameters:
f - The file containing the XML to parse.
Returns:
A new DOM Document object.
Throws:
IOException - If any IO errors occur.
SAXException - If any parse errors occur.
IllegalArgumentException - If the file is null.
See Also:
DocumentHandler

parse

public abstract Document parse(InputSource is)
                        throws SAXException,
                               IOException
Parse the content of the given input source as an XML document and return a new DOM Document object.

Parameters:
is - InputSource containing the content to be parsed.
Returns:
A new DOM Document object.
Throws:
IOException - If any IO errors occur.
SAXException - If any parse errors occur.
IllegalArgumentException - If the InputSource is null.
See Also:
DocumentHandler

isNamespaceAware

public abstract boolean isNamespaceAware()
Indicates whether or not this parser is configured to understand namespaces.

Returns:
true if this parser is configured to understand namespaces; false otherwise.

isValidating

public abstract boolean isValidating()
Indicates whether or not this parser is configured to validate XML documents.

Returns:
true if this parser is configured to validate XML documents; false otherwise.

setEntityResolver

public abstract void setEntityResolver(EntityResolver er)
Specify the EntityResolver to be used to resolve entities present in the XML document to be parsed. Setting this to null will result in the underlying implementation using it's own default implementation and behavior.

Parameters:
er - The EntityResolver to be used to resolve entities present in the XML document to be parsed.

setErrorHandler

public abstract void setErrorHandler(ErrorHandler eh)
Specify the ErrorHandler to be used to report errors present in the XML document to be parsed. Setting this to null will result in the underlying implementation using it's own default implementation and behavior.

Parameters:
eh - The ErrorHandler to be used to report errors present in the XML document to be parsed.

newDocument

public abstract Document newDocument()
Obtain a new instance of a DOM Document object to build a DOM tree with. An alternative way to create a DOM Document object is to use the getDOMImplementation method to get a DOM Level 2 DOMImplementation object and then use DOM Level 2 methods on that object to create a DOM Document object.

Returns:
A new instance of a DOM Document object.

getDOMImplementation

public abstract DOMImplementation getDOMImplementation()
Obtain an instance of a DOMImplementation object.

Returns:
A new instance of a DOMImplementation.

Copyright 2003 Sun Microsystems, Inc. All rights reserved