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TransformerFactory

public abstract class TransformerFactory
extends Object

java.lang.Object
   ↳ javax.xml.transform.TransformerFactory
Known Direct Subclasses


A TransformerFactory instance can be used to create Transformer and Templates objects.

The system property that determines which Factory implementation to create is named "javax.xml.transform.TransformerFactory". This property names a concrete subclass of the TransformerFactory abstract class. If the property is not defined, a platform default is be used.

Summary

Protected constructors

TransformerFactory()

Default constructor is protected on purpose.

Public methods

abstract Source getAssociatedStylesheet(Source source, String media, String title, String charset)

Get the stylesheet specification(s) associated with the XML Source document via the xml-stylesheet processing instruction that match the given criteria.

abstract Object getAttribute(String name)

Allows the user to retrieve specific attributes on the underlying implementation.

abstract ErrorListener getErrorListener()

Get the error event handler for the TransformerFactory.

abstract boolean getFeature(String name)

Look up the value of a feature.

abstract URIResolver getURIResolver()

Get the object that is used by default during the transformation to resolve URIs used in document(), xsl:import, or xsl:include.

static TransformerFactory newInstance(String factoryClassName, ClassLoader classLoader)

Returns an instance of the named implementation of TransformerFactory.

static TransformerFactory newInstance()

Returns Android's implementation of TransformerFactory.

abstract Templates newTemplates(Source source)

Process the Source into a Templates object, which is a a compiled representation of the source.

abstract Transformer newTransformer(Source source)

Process the Source into a Transformer Object.

abstract Transformer newTransformer()

Create a new Transformer that performs a copy of the Source to the Result.

abstract void setAttribute(String name, Object value)

Allows the user to set specific attributes on the underlying implementation.

abstract void setErrorListener(ErrorListener listener)

Set the error event listener for the TransformerFactory, which is used for the processing of transformation instructions, and not for the transformation itself.

abstract void setFeature(String name, boolean value)

Set a feature for this TransformerFactory and Transformers or Templates created by this factory.

abstract void setURIResolver(URIResolver resolver)

Set an object that is used by default during the transformation to resolve URIs used in document(), xsl:import, or xsl:include.

Inherited methods

From class java.lang.Object

Protected constructors

TransformerFactory

Added in API level 8
TransformerFactory ()

Default constructor is protected on purpose.

Public methods

getAssociatedStylesheet

Added in API level 8
Source getAssociatedStylesheet (Source source, 
                String media, 
                String title, 
                String charset)

Get the stylesheet specification(s) associated with the XML Source document via the xml-stylesheet processing instruction that match the given criteria. Note that it is possible to return several stylesheets, in which case they are applied as if they were a list of imports or cascades in a single stylesheet.

Parameters
source Source: The XML source document.
media String: The media attribute to be matched. May be null, in which case the preferred templates will be used (i.e. alternate = no).
title String: The value of the title attribute to match. May be null.
charset String: The value of the charset attribute to match. May be null.
Returns
Source A Source Object suitable for passing to the TransformerFactory.
Throws
TransformerConfigurationException An Exception is thrown if an error occurs during parsing of the source.

See also:

getAttribute

Added in API level 8
Object getAttribute (String name)

Allows the user to retrieve specific attributes on the underlying implementation. An IllegalArgumentException is thrown if the underlying implementation doesn't recognize the attribute.

Parameters
name String: The name of the attribute.
Returns
Object value The value of the attribute.

getErrorListener

Added in API level 8
ErrorListener getErrorListener ()

Get the error event handler for the TransformerFactory.

Returns
ErrorListener The current error handler, which should never be null.

getFeature

Added in API level 8
boolean getFeature (String name)

Look up the value of a feature.

Feature names are fully qualified URIs. Implementations may define their own features. false is returned if this TransformerFactory or the Transformers or Templates it creates cannot support the feature. It is possible for an TransformerFactory to expose a feature value but be unable to change its state.

Parameters
name String: Feature name.
Returns
boolean The current state of the feature, true or false.
Throws
NullPointerException If the name parameter is null.

getURIResolver

Added in API level 8
URIResolver getURIResolver ()

Get the object that is used by default during the transformation to resolve URIs used in document(), xsl:import, or xsl:include.

Returns
URIResolver The URIResolver that was set with setURIResolver.

newInstance

Added in API level 9
TransformerFactory newInstance (String factoryClassName, 
                ClassLoader classLoader)

Returns an instance of the named implementation of TransformerFactory.

Parameters
factoryClassName String
classLoader ClassLoader
Returns
TransformerFactory
Throws
TransformerFactoryConfigurationError if factoryClassName is not available or cannot be instantiated.

newInstance

Added in API level 8
TransformerFactory newInstance ()

Returns Android's implementation of TransformerFactory. Unlike other Java implementations, this method does not consult system properties, properties files, or the services API.

Returns
TransformerFactory
Throws
TransformerFactoryConfigurationError never. Included for API compatibility with other Java implementations.

newTemplates

Added in API level 8
Templates newTemplates (Source source)

Process the Source into a Templates object, which is a a compiled representation of the source. This Templates object may then be used concurrently across multiple threads. Creating a Templates object allows the TransformerFactory to do detailed performance optimization of transformation instructions, without penalizing runtime transformation.

Parameters
source Source: An object that holds a URL, input stream, etc.
Returns
Templates A Templates object capable of being used for transformation purposes, never null.
Throws
TransformerConfigurationException May throw this during the parse when it is constructing the Templates object and fails.

newTransformer

Added in API level 8
Transformer newTransformer (Source source)

Process the Source into a Transformer Object. The Source is an XSLT document that conforms to XSL Transformations (XSLT) Version 1.0. Care must be taken not to use this Transformer in multiple Threads running concurrently. Different TransformerFactories can be used concurrently by different Threads.

Parameters
source Source: Source of XSLT document used to create Transformer. Examples of XML Sources include StreamSource, SAXSource and DOMSource.
Returns
Transformer A Transformer object that may be used to perform a transformation in a single Thread, never null.
Throws
TransformerConfigurationException Thrown if there are errors when parsing the Source or it is not possible to create a Transformer instance.

See also:

newTransformer

Added in API level 8
Transformer newTransformer ()

Create a new Transformer that performs a copy of the Source to the Result. i.e. the "identity transform".

Returns
Transformer A Transformer object that may be used to perform a transformation in a single thread, never null.
Throws
TransformerConfigurationException Thrown if it is not possible to create a Transformer instance.

setAttribute

Added in API level 8
void setAttribute (String name, 
                Object value)

Allows the user to set specific attributes on the underlying implementation. An attribute in this context is defined to be an option that the implementation provides. An IllegalArgumentException is thrown if the underlying implementation doesn't recognize the attribute.

Parameters
name String: The name of the attribute.
value Object: The value of the attribute.

setErrorListener

Added in API level 8
void setErrorListener (ErrorListener listener)

Set the error event listener for the TransformerFactory, which is used for the processing of transformation instructions, and not for the transformation itself. An IllegalArgumentException is thrown if the ErrorListener listener is null.

Parameters
listener ErrorListener: The new error listener.

setFeature

Added in API level 8
void setFeature (String name, 
                boolean value)

Set a feature for this TransformerFactory and Transformers or Templates created by this factory.

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

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

  • true: the implementation will limit XML processing to conform to implementation limits and behave in a secure fashion as defined by the implementation. Examples include resolving user defined style sheets and functions. If XML processing is limited for security reasons, it will be reported via a call to the registered fatalError(TransformerException). See setErrorListener(ErrorListener).
  • false: the implementation will processing XML according to the XML specifications without regard to possible implementation limits.

Parameters
name String: Feature name.
value boolean: Is feature state true or false.
Throws
TransformerConfigurationException if this TransformerFactory or the Transformers or Templates it creates cannot support this feature.
NullPointerException If the name parameter is null.

setURIResolver

Added in API level 8
void setURIResolver (URIResolver resolver)

Set an object that is used by default during the transformation to resolve URIs used in document(), xsl:import, or xsl:include.

Parameters
resolver URIResolver: An object that implements the URIResolver interface, or null.
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