wt.util.xml.jaxp
Class JAXPFactories

java.lang.Object
  wt.util.xml.jaxp.JAXPFactories

public final class JAXPFactories

extends Object

Simple class to lazily instantiate and cache JAXP factories for a single thread (i.e. instances of this class are not thread safe).

Field Summary

private static String	DEFAULT_DOC_BUILDER_FACTORY
private static String	DEFAULT_SAX_PARSER_FACTORY
private static String	DEFAULT_TRANSFORMER_FACTORY
private DocumentBuilderFactory	documentBuilderFactory
private SAXParserFactory	saxParserFactory
private TransformerFactory	transformerFactory

Constructor Summary

JAXPFactories()
Public contructor.

JAXPFactories(SAXParserFactory saxParserFactory, DocumentBuilderFactory documentBuilderFactory, TransformerFactory transformerFactory)
Public contructor.

Method Summary

DocumentBuilderFactory	getDocumentBuilderFactory() Fetches preferred DOM implementation or JAXP one if preferred implementation is not available.
private static Object	getFactoryInstance(String defaultClassName)
SAXParserFactory	getSAXParserFactory() Fetches preferred SAX implementation or JAXP one if preferred implementation is not available.
SAXTransformerFactory	getSAXTransformerFactory() Fetches preferred XSLT implementation or JAXP one if preferred implementation is not available.
TransformerFactory	getTransformerFactory() Fetches preferred XSLT implementation or JAXP one if preferred implementation is not available.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SAX_PARSER_FACTORY

private static final String DEFAULT_SAX_PARSER_FACTORY

See Also:

Constant Field Values

DEFAULT_DOC_BUILDER_FACTORY

private static final String DEFAULT_DOC_BUILDER_FACTORY

See Also:

Constant Field Values

DEFAULT_TRANSFORMER_FACTORY

private static final String DEFAULT_TRANSFORMER_FACTORY

See Also:

Constant Field Values

saxParserFactory

private SAXParserFactory saxParserFactory

documentBuilderFactory

private DocumentBuilderFactory documentBuilderFactory

transformerFactory

private TransformerFactory transformerFactory

Constructor Detail

JAXPFactories

public JAXPFactories()

Public contructor. As already noted, instances of this class should only be used within a single thread (at a time). Each instance caches instances of all factories found, so there is very little overhead in repeated method calls on the same JAXPFactories instance.

JAXPFactories

public JAXPFactories(SAXParserFactory saxParserFactory,
                     DocumentBuilderFactory documentBuilderFactory,
                     TransformerFactory transformerFactory)

Public contructor. As already noted, instances of this class should only be used within a single thread (at a time). Each instance caches instances of all factories found, so there is very little overhead in repeated method calls on the same JAXPFactories instance. This variation allows the caller to spell out the implementation factory instances to use. For any argument which is null, the Windchill default will be used.

Method Detail

getSAXParserFactory

public SAXParserFactory getSAXParserFactory()

Fetches preferred SAX implementation or JAXP one if preferred implementation is not available. Throws NullPointerException if no implementation is found.

getDocumentBuilderFactory

public DocumentBuilderFactory getDocumentBuilderFactory()

Fetches preferred DOM implementation or JAXP one if preferred implementation is not available. Throws NullPointerException if no implementation is found.

getTransformerFactory

public TransformerFactory getTransformerFactory()

Fetches preferred XSLT implementation or JAXP one if preferred implementation is not available. Throws NullPointerException if no implementation is found.

getSAXTransformerFactory

public SAXTransformerFactory getSAXTransformerFactory()

Fetches preferred XSLT implementation or JAXP one if preferred implementation is not available. Throws NullPointerException if no implementation is found. Throws a ClassCastException if the transformer factory in question is not an instance of SAXTransformerFactory.

getFactoryInstance

private static Object getFactoryInstance(String defaultClassName)