Package javax.xml.parsers

Class DocumentBuilderFactory

java.lang.Object
javax.xml.parsers.DocumentBuilderFactory
Direct Known Subclasses:
DocumentBuilderFactoryImpl
public abstract class DocumentBuilderFactory
extends Object
Defines a factory API that enables applications to obtain a parser that produces DOM object trees from XML documents.
Version:
$Revision: 884950 $, $Date: 2009-11-27 10:46:18 -0800 (Fri, 27 Nov 2009) $
Author:
Jeff Suttor

  • Constructor Summary

    Constructors
    Modifier Constructor Description
    protected DocumentBuilderFactory()  

  • Method Summary

    Modifier and Type Method Description
    abstract Object getAttribute​(String name)
    Allows the user to retrieve specific attributes on the underlying implementation.
    abstract boolean getFeature​(String name)
    Get the state of the named feature.
    Schema getSchema()
    Gets the Schema object specified through the setSchema(Schema schema) method.
    boolean isCoalescing()
    Indicates whether or not the factory is configured to produce parsers which converts CDATA nodes to Text nodes and appends it to the adjacent (if any) Text node.
    boolean isExpandEntityReferences()
    Indicates whether or not the factory is configured to produce parsers which expand entity reference nodes.
    boolean isIgnoringComments()
    Indicates whether or not the factory is configured to produce parsers which ignores comments.
    boolean isIgnoringElementContentWhitespace()
    Indicates whether or not the factory is configured to produce parsers which ignore ignorable whitespace in element content.
    boolean isNamespaceAware()
    Indicates whether or not the factory is configured to produce parsers which are namespace aware.
    boolean isValidating()
    Indicates whether or not the factory is configured to produce parsers which validate the XML content during parse.
    boolean isXIncludeAware()
    Get state of XInclude processing.
    abstract DocumentBuilder newDocumentBuilder()
    Creates a new instance of a DocumentBuilder using the currently configured parameters.
    static DocumentBuilderFactory newInstance()
    Returns Android's implementation of DocumentBuilderFactory.
    static DocumentBuilderFactory newInstance​(String factoryClassName, ClassLoader classLoader)
    Returns an instance of the named implementation of DocumentBuilderFactory.
    abstract void setAttribute​(String name, Object value)
    Allows the user to set specific attributes on the underlying implementation.
    void setCoalescing​(boolean coalescing)
    Specifies that the parser produced by this code will convert CDATA nodes to Text nodes and append it to the adjacent (if any) text node.
    void setExpandEntityReferences​(boolean expandEntityRef)
    Specifies that the parser produced by this code will expand entity reference nodes.
    abstract void setFeature​(String name, boolean value)
    Set a feature for this DocumentBuilderFactory and DocumentBuilders created by this factory.
    void setIgnoringComments​(boolean ignoreComments)
    Specifies that the parser produced by this code will ignore comments.
    void setIgnoringElementContentWhitespace​(boolean whitespace)
    Specifies that the parsers created by this factory must eliminate whitespace in element content (sometimes known loosely as 'ignorable whitespace') when parsing XML documents (see XML Rec 2.10).
    void setNamespaceAware​(boolean awareness)
    Specifies that the parser produced by this code will provide support for XML namespaces.
    void setSchema​(Schema schema)
    Set the Schema to be used by parsers created from this factory.
    void setValidating​(boolean validating)
    Specifies that the parser produced by this code will validate documents as they are parsed.
    void setXIncludeAware​(boolean state)
    Set state of XInclude processing.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • DocumentBuilderFactory

      protected DocumentBuilderFactory()

  • Method Details

    • newInstance

      public static DocumentBuilderFactory newInstance()
      Returns Android's implementation of DocumentBuilderFactory. Unlike other Java implementations, this method does not consult system properties, property files, or the services API.
      Returns:
      a new DocumentBuilderFactory.

    • newInstance

      public static DocumentBuilderFactory newInstance​(String factoryClassName, ClassLoader classLoader)
      Returns an instance of the named implementation of DocumentBuilderFactory.
      Throws:
      FactoryConfigurationError - if factoryClassName is not available or cannot be instantiated.
      Since:
      1.6

    • newDocumentBuilder

      public abstract DocumentBuilder newDocumentBuilder() throws ParserConfigurationException
      Creates a new instance of a DocumentBuilder using the currently configured parameters.
      Returns:
      A new instance of a DocumentBuilder.
      Throws:
      ParserConfigurationException - if a DocumentBuilder cannot be created which satisfies the configuration requested.

    • setNamespaceAware

      public void setNamespaceAware​(boolean awareness)
      Specifies that the parser produced by this code will provide support for XML namespaces. By default the value of this is set to false
      Parameters:
      awareness - true if the parser produced will provide support for XML namespaces; false otherwise.

    • setValidating

      public void setValidating​(boolean validating)
      Specifies that the parser produced by this code will validate documents as they are parsed. By default the value of this is set to false.

      Note that "the validation" here means a validating parser as defined in the XML recommendation. In other words, it essentially just controls the DTD validation. (except the legacy two properties defined in JAXP 1.2. See here for more details.)

      To use modern schema languages such as W3C XML Schema or RELAX NG instead of DTD, you can configure your parser to be a non-validating parser by leaving the setValidating(boolean) method false, then use the setSchema(Schema) method to associate a schema to a parser.

      Parameters:
      validating - true if the parser produced will validate documents as they are parsed; false otherwise.

    • setIgnoringElementContentWhitespace

      public void setIgnoringElementContentWhitespace​(boolean whitespace)
      Specifies that the parsers created by this factory must eliminate whitespace in element content (sometimes known loosely as 'ignorable whitespace') when parsing XML documents (see XML Rec 2.10). Note that only whitespace which is directly contained within element content that has an element only content model (see XML Rec 3.2.1) will be eliminated. Due to reliance on the content model this setting requires the parser to be in validating mode. By default the value of this is set to false.
      Parameters:
      whitespace - true if the parser created must eliminate whitespace in the element content when parsing XML documents; false otherwise.

    • setExpandEntityReferences

      public void setExpandEntityReferences​(boolean expandEntityRef)
      Specifies that the parser produced by this code will expand entity reference nodes. By default the value of this is set to true
      Parameters:
      expandEntityRef - true if the parser produced will expand entity reference nodes; false otherwise.

    • setIgnoringComments

      public void setIgnoringComments​(boolean ignoreComments)

      Specifies that the parser produced by this code will ignore comments. By default the value of this is set to false .

      Parameters:
      ignoreComments - boolean value to ignore comments during processing

    • setCoalescing

      public void setCoalescing​(boolean coalescing)
      Specifies that the parser produced by this code will convert CDATA nodes to Text nodes and append it to the adjacent (if any) text node. By default the value of this is set to false
      Parameters:
      coalescing - true if the parser produced will convert CDATA nodes to Text nodes and append it to the adjacent (if any) text node; false otherwise.

    • isNamespaceAware

      public boolean isNamespaceAware()
      Indicates whether or not the factory is configured to produce parsers which are namespace aware.
      Returns:
      true if the factory is configured to produce parsers which are namespace aware; false otherwise.

    • isValidating

      public boolean isValidating()
      Indicates whether or not the factory is configured to produce parsers which validate the XML content during parse.
      Returns:
      true if the factory is configured to produce parsers which validate the XML content during parse; false otherwise.

    • isIgnoringElementContentWhitespace

      public boolean isIgnoringElementContentWhitespace()
      Indicates whether or not the factory is configured to produce parsers which ignore ignorable whitespace in element content.
      Returns:
      true if the factory is configured to produce parsers which ignore ignorable whitespace in element content; false otherwise.

    • isExpandEntityReferences

      public boolean isExpandEntityReferences()
      Indicates whether or not the factory is configured to produce parsers which expand entity reference nodes.
      Returns:
      true if the factory is configured to produce parsers which expand entity reference nodes; false otherwise.

    • isIgnoringComments

      public boolean isIgnoringComments()
      Indicates whether or not the factory is configured to produce parsers which ignores comments.
      Returns:
      true if the factory is configured to produce parsers which ignores comments; false otherwise.

    • isCoalescing

      public boolean isCoalescing()
      Indicates whether or not the factory is configured to produce parsers which converts CDATA nodes to Text nodes and appends it to the adjacent (if any) Text node.
      Returns:
      true if the factory is configured to produce parsers which converts CDATA nodes to Text nodes and appends it to the adjacent (if any) Text node; false otherwise.

    • setAttribute

      public abstract void setAttribute​(String name, Object value) throws IllegalArgumentException
      Allows the user to set specific attributes on the underlying implementation.
      Parameters:
      name - The name of the attribute.
      value - The value of the attribute.
      Throws:
      IllegalArgumentException - thrown if the underlying implementation doesn't recognize the attribute.

    • getAttribute

      public abstract Object getAttribute​(String name) throws IllegalArgumentException
      Allows the user to retrieve specific attributes on the underlying implementation.
      Parameters:
      name - The name of the attribute.
      Returns:
      value The value of the attribute.
      Throws:
      IllegalArgumentException - thrown if the underlying implementation doesn't recognize the attribute.

    • setFeature

      public abstract void setFeature​(String name, boolean value) throws ParserConfigurationException

      Set a feature for this DocumentBuilderFactory and DocumentBuilders created by this factory.

      Feature names are fully qualified URIs. Implementations may define their own features. An ParserConfigurationException is thrown if this DocumentBuilderFactory or the DocumentBuilders it creates cannot support the feature. It is possible for an DocumentBuilderFactory to expose a feature value but be unable to change its state.

      All implementations are required to support the XMLConstants.FEATURE_SECURE_PROCESSING feature. When the feature is:

      Parameters:
      name - Feature name.
      value - Is feature state true or false.
      Throws:
      ParserConfigurationException - if this DocumentBuilderFactory or the DocumentBuilders it creates cannot support this feature.
      NullPointerException - If the name parameter is null.

    • getFeature

      public abstract boolean getFeature​(String name) throws ParserConfigurationException

      Get the state of the named feature.

      Feature names are fully qualified URIs. Implementations may define their own features. An ParserConfigurationException is thrown if this DocumentBuilderFactory or the DocumentBuilders it creates cannot support the feature. It is possible for an DocumentBuilderFactory to expose a feature value but be unable to change its state.

      Parameters:
      name - Feature name.
      Returns:
      State of the named feature.
      Throws:
      ParserConfigurationException - if this DocumentBuilderFactory or the DocumentBuilders it creates cannot support this feature.

    • getSchema

      public Schema getSchema()
      Gets the Schema object specified through the setSchema(Schema schema) method.
      Returns:
      the Schema object that was last set through the setSchema(Schema) method, or null if the method was not invoked since a DocumentBuilderFactory is created.
      Throws:
      UnsupportedOperationException - For backward compatibility, when implementations for earlier versions of JAXP is used, this exception will be thrown.
      Since:
      1.5

    • setSchema

      public void setSchema​(Schema schema)

      Set the Schema to be used by parsers created from this factory.

      When a Schema is non-null, a parser will use a validator created from it to validate documents before it passes information down to the application.

      When errors are found by the validator, the parser is responsible to report them to the user-specified ErrorHandler (or if the error handler is not set, ignore them or throw them), just like any other errors found by the parser itself. In other words, if the user-specified ErrorHandler is set, it must receive those errors, and if not, they must be treated according to the implementation specific default error handling rules.

      A validator may modify the outcome of a parse (for example by adding default values that were missing in documents), and a parser is responsible to make sure that the application will receive modified DOM trees.

      Initially, null is set as the Schema.

      This processing will take effect even if the isValidating() method returns false.

      It is an error to use the http://java.sun.com/xml/jaxp/properties/schemaSource property and/or the http://java.sun.com/xml/jaxp/properties/schemaLanguage property in conjunction with a Schema object. Such configuration will cause a ParserConfigurationException exception when the newDocumentBuilder() is invoked.

      Note for implementors

      A parser must be able to work with any Schema implementation. However, parsers and schemas are allowed to use implementation-specific custom mechanisms as long as they yield the result described in the specification.

      Parameters:
      schema - Schema to use or null to remove a schema.
      Throws:
      UnsupportedOperationException - For backward compatibility, when implementations for earlier versions of JAXP is used, this exception will be thrown.
      Since:
      1.5

    • setXIncludeAware

      public void setXIncludeAware​(boolean state)

      Set state of XInclude processing.

      If XInclude markup is found in the document instance, should it be processed as specified in XML Inclusions (XInclude) Version 1.0.

      XInclude processing defaults to false.

      Parameters:
      state - Set XInclude processing to true or false
      Throws:
      UnsupportedOperationException - For backward compatibility, when implementations for earlier versions of JAXP is used, this exception will be thrown.
      Since:
      1.5

    • isXIncludeAware

      public boolean isXIncludeAware()

      Get state of XInclude processing.

      Returns:
      current state of XInclude processing
      Throws:
      UnsupportedOperationException - For backward compatibility, when implementations for earlier versions of JAXP is used, this exception will be thrown.
      Since:
      1.5