Module java.xml

Package javax.xml.transform.stax

Class StAXSource

java.lang.Object

javax.xml.transform.stax.StAXSource

All Implemented Interfaces:

Source

public class StAXSource
extends Object
implements Source

Acts as a holder for an XML Source in the form of a StAX reader,i.e. XMLStreamReader or XMLEventReader. StAXSource can be used in all cases that accept a Source, e.g. Transformer, Validator which accept Source as input.

StAXSources are consumed during processing and are not reusable.

Since:

1.6

See Also:

• JSR 173: Streaming API for XML
• XMLStreamReader
• XMLEventReader

Field Summary

Fields

Modifier and Type	Field	Description
static final String	FEATURE	If TransformerFactory.getFeature(String name) returns true when passed this value as an argument, the Transformer supports Source input of this type.

Constructor Summary

Constructors

Constructor	Description
StAXSource(XMLEventReader xmlEventReader)	Creates a new instance of a StAXSource by supplying an XMLEventReader.
StAXSource(XMLStreamReader xmlStreamReader)	Creates a new instance of a StAXSource by supplying an XMLStreamReader.

Method Summary

Modifier and Type	Method	Description
String	getSystemId()	Get the system identifier used by this StAXSource.
XMLEventReader	getXMLEventReader()	Get the XMLEventReader used by this StAXSource.
XMLStreamReader	getXMLStreamReader()	Get the XMLStreamReader used by this StAXSource.
boolean	isEmpty()	Indicates whether the StAXSource object is empty.
void	setSystemId(String systemId)	In the context of a StAXSource, it is not appropriate to explicitly set the system identifier.

Methods declared in class java.lang.Object

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

Field Details

FEATURE

public static final String FEATURE

If TransformerFactory.getFeature(String name) returns true when passed this value as an argument, the Transformer supports Source input of this type.

See Also:

• Constant Field Values

Constructor Details

StAXSource

public StAXSource(XMLEventReader xmlEventReader)
           throws XMLStreamException

Creates a new instance of a StAXSource by supplying an XMLEventReader.

XMLEventReader must be a non-null reference.

XMLEventReader must be in XMLStreamConstants.START_DOCUMENT or XMLStreamConstants.START_ELEMENT state.

Parameters:

xmlEventReader - XMLEventReader used to create this StAXSource.

Throws:

XMLStreamException - If xmlEventReader access throws an Exception.

IllegalArgumentException - If xmlEventReader == null.

IllegalStateException - If xmlEventReader is not in XMLStreamConstants.START_DOCUMENT or XMLStreamConstants.START_ELEMENT state.

StAXSource

public StAXSource(XMLStreamReader xmlStreamReader)

Creates a new instance of a StAXSource by supplying an XMLStreamReader.

XMLStreamReader must be a non-null reference.

XMLStreamReader must be in XMLStreamConstants.START_DOCUMENT or XMLStreamConstants.START_ELEMENT state.

Parameters:

xmlStreamReader - XMLStreamReader used to create this StAXSource.

Throws:

IllegalArgumentException - If xmlStreamReader == null.

IllegalStateException - If xmlStreamReader is not in XMLStreamConstants.START_DOCUMENT or XMLStreamConstants.START_ELEMENT state.

Method Details

getXMLEventReader

public XMLEventReader getXMLEventReader()

Get the XMLEventReader used by this StAXSource.

XMLEventReader will be null. if this StAXSource was created with a XMLStreamReader.

Returns:

XMLEventReader used by this StAXSource.

getXMLStreamReader

public XMLStreamReader getXMLStreamReader()

Get the XMLStreamReader used by this StAXSource.

XMLStreamReader will be null if this StAXSource was created with a XMLEventReader.

Returns:

XMLStreamReader used by this StAXSource.

setSystemId

public void setSystemId(String systemId)

In the context of a StAXSource, it is not appropriate to explicitly set the system identifier. The XMLStreamReader or XMLEventReader used to construct this StAXSource determines the system identifier of the XML source.

An UnsupportedOperationException is always thrown by this method.

Specified by:

setSystemId in interface Source

Parameters:

systemId - Ignored.

Throws:

UnsupportedOperationException - Is always thrown by this method.

getSystemId

public String getSystemId()

Get the system identifier used by this StAXSource.

The XMLStreamReader or XMLEventReader used to construct this StAXSource is queried to determine the system identifier of the XML source.

The system identifier may be null or an empty "" String.

Specified by:

getSystemId in interface Source

Returns:

System identifier used by this StAXSource.

isEmpty

public boolean isEmpty()

Indicates whether the StAXSource object is empty. Since a StAXSource object can never be empty, this method always returns false.

Specified by:

isEmpty in interface Source

Returns:

unconditionally false