javax.xml.parsers

Class DocumentBuilder

java.lang.Object

javax.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 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.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DocumentBuilder() Protected constructor

Method Summary

Methods

Modifier and Type	Method and Description
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.
abstract Document	parse(org.xml.sax.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.
abstract void	setEntityResolver(org.xml.sax.EntityResolver er) Specify the EntityResolver to be used to resolve entities present in the XML document to be parsed.
abstract void	setErrorHandler(org.xml.sax.ErrorHandler eh) Specify the ErrorHandler to be used by the parser.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DocumentBuilder

protected DocumentBuilder()

Protected constructor

Method Detail

parse

public Document parse(InputStream is)
               throws org.xml.sax.SAXException,
                      IOException

Parse the content of the given InputStream as an XML document and return a new DOM Document object. An IllegalArgumentException is thrown if the InputStream is null.

Parameters:

is - InputStream containing the content to be parsed.

Returns:

Document result of parsing the InputStream

Throws:

IOException - If any IO errors occur.

org.xml.sax.SAXException - If any parse errors occur.

parse

public abstract Document parse(org.xml.sax.InputSource is)
                        throws org.xml.sax.SAXException,
                               IOException

Parse the content of the given input source as an XML document and return a new DOM Document object. An IllegalArgumentException is thrown if the InputSource is null null.

Parameters:

is - InputSource containing the content to be parsed.

Returns:

A new DOM Document object.

Throws:

IOException - If any IO errors occur.

org.xml.sax.SAXException - If any parse errors occur.

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(org.xml.sax.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(org.xml.sax.ErrorHandler eh)

Specify the ErrorHandler to be used by the parser. 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 by the parser.

newDocument

public abstract Document newDocument()

Obtain a new instance of a DOM Document object to build a DOM tree with.

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.