net.sf.saxon.s9api

Class Serializer

java.lang.Object

net.sf.saxon.s9api.Serializer

All Implemented Interfaces:

Destination

public class Serializer
extends Object
implements Destination

A Serializer takes a tree representation of XML and turns it into lexical XML markup.

Note that this is XML serialization in the sense of the W3C XSLT and XQuery specifications. This has nothing to do with the serialization of Java objects, or the Serializable interface.

The serialization may be influenced by a number of serialization parameters. A parameter has a name, which is an instance of Serializer.Property, and a value, which is expressed as a string. The effect of most of the properties is as described in the W3C specification XSLT 2.0 and XQuery 1.0 Serialization. Saxon supports all the serialization parameters defined in that specification, together with some additional parameters, whose property names are prefixed "SAXON_".

Serialization parameters defined via this interface take precedence over any serialization parameters defined within the source of the query or stylesheet.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Serializer.Property Enumerator over the defined serialization properties

Constructor Summary

Constructors

Constructor and Description
Serializer() Create a Serializer
Serializer(File file) Create a Serializer initialized to write to a given File.
Serializer(OutputStream stream) Create a Serializer initialized to write to a given OutputStream.
Serializer(Writer writer) Create a Serializer initialized to write to a given Writer.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Close any resources associated with this destination.
Object	getOutputDestination() Get the current output destination.
protected Properties	getOutputProperties() Create a Properties object holding the defined serialization properties.
String	getOutputProperty(Serializer.Property property) Get the value of a serialization property
Receiver	getReceiver(Configuration config) Return a receiver to which Saxon will send events.
protected Receiver	getReceiver(Executable executable) Return a receiver to which Saxon will send events.
protected Result	getResult() Get the JAXP StreamResult object representing the output destination of this serializer
StreamWriterToReceiver	getXMLStreamWriter() Get an XMLStreamWriter that can be used for writing application-generated XML to be output via this serializer.
void	serializeNode(XdmNode node) Serialize an XdmNode to the selected output destination using this serializer
String	serializeNodeToString(XdmNode node) Serialize an XdmNode to a string using this serializer
void	serializeXdmValue(XdmValue value) Serialize an arbitrary XdmValue to the selected output destination using this serializer.
void	setOutputFile(File file) Set the destination of the serialized output, as a File.
void	setOutputProperty(Serializer.Property property, String value) Set the value of a serialization property.
void	setOutputStream(OutputStream stream) Set the destination of the serialized output, as an OutputStream.
void	setOutputWriter(Writer writer) Set the destination of the serialized output, as a Writer.
void	setProcessor(Processor processor) Set the Processor associated with this Serializer.

Methods inherited from class java.lang.Object

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

Constructor Detail

Serializer

public Serializer()

Create a Serializer

Serializer

public Serializer(OutputStream stream)

Create a Serializer initialized to write to a given OutputStream.

Closing the output stream after use is the responsibility of the caller.

Parameters:

stream - The OutputStream to which the Serializer will write

Serializer

public Serializer(Writer writer)

Create a Serializer initialized to write to a given Writer.

Closing the writer after use is the responsibility of the caller.

Parameters:

writer - The Writer to which the Serializer will write

Serializer

public Serializer(File file)

Create a Serializer initialized to write to a given File.

Parameters:

file - The File to which the Serializer will write

Method Detail

setProcessor

public void setProcessor(Processor processor)

Set the Processor associated with this Serializer. This will be called automatically if the serializer is created using one of the Processor.newSerializer() methods. The Serializer currently needs to know about the Processor only if the method getXMLStreamWriter() is called.

Parameters:

processor - the associated Processor

Since:

9.3

setOutputProperty

public void setOutputProperty(Serializer.Property property,
                     String value)

Set the value of a serialization property. Any existing value of the property is overridden. If the supplied value is null, any existing value of the property is removed.

Example:

serializer.setOutputProperty(Serializer.Property.METHOD, "xml");

Any serialization properties supplied via this interface take precedence over serialization properties defined in the source stylesheet or query.

Parameters:

property - The name of the property to be set

value - The value of the property, as a string. The format is generally as defined in the xsl:output declaration in XSLT: this means that boolean properties, for example, are represented using the strings "yes" and "no". Properties whose values are QNames, such as cdata-section-elements are expressed using the Clark representation of a QName, that is "{uri}local". Multi-valued properties (again, cdata-section-elements is an example) are expressed as a space-separated list.

Throws:

IllegalArgumentException - if the value of the property is invalid. The property is validated individually; invalid combinations of properties will be detected only when the properties are actually used to serialize an XML event stream.

getOutputProperty

public String getOutputProperty(Serializer.Property property)

Get the value of a serialization property

Parameters:

property - the name of the required property

Returns:

the value of the required property as a string, or null if the property has not been given any value.

setOutputWriter

public void setOutputWriter(Writer writer)

Set the destination of the serialized output, as a Writer.

Note that when this option is used, the serializer does not perform character encoding. This also means that it never replaces special characters with XML numeric character references. The final encoding is the responsibility of the supplied Writer.

Closing the writer after use is the responsibility of the caller.

Calling this method has the side-effect of setting the OutputStream and OutputFile to null.

Parameters:

writer - the Writer to which the serialized XML output will be written.

setOutputStream

public void setOutputStream(OutputStream stream)

Set the destination of the serialized output, as an OutputStream.

Closing the output stream after use is the responsibility of the caller.

Calling this method has the side-effect of setting the OutputWriter and OutputFile to null.

Parameters:

stream - the OutputStream to which the serialized XML output will be written.

setOutputFile

public void setOutputFile(File file)

Set the destination of the serialized output, as a File.

Calling this method has the side-effect of setting the current OutputWriter and OutputStream to null.

Parameters:

file - the File to which the serialized XML output will be written.

serializeNode

public void serializeNode(XdmNode node)
                   throws SaxonApiException

Serialize an XdmNode to the selected output destination using this serializer

Parameters:

node - The node to be serialized

Throws:

IllegalStateException - if no outputStream, Writer, or File has been supplied as the destination for the serialized output

SaxonApiException - if a serialization error or I/O error occurs

Since:

9.3

serializeXdmValue

public void serializeXdmValue(XdmValue value)
                       throws SaxonApiException

Serialize an arbitrary XdmValue to the selected output destination using this serializer. The supplied sequence is first wrapped in a document node according to the rules given in section 2 (Sequence Normalization) of the XSLT/XQuery serialization specification; the resulting document nodes is then serialized using the serialization parameters defined in this serializer.

Parameters:

value - The value to be serialized

Throws:

IllegalStateException - if no outputStream, Writer, or File has been supplied as the destination for the serialized output, or if no Processor is associated with the serializer

SaxonApiException - if a serialization error or I/O error occurs

Since:

9.3

serializeNodeToString

public String serializeNodeToString(XdmNode node)
                             throws SaxonApiException

Serialize an XdmNode to a string using this serializer

Parameters:

node - The node to be serialized

Returns:

the serialized representation of the node as lexical XML

Throws:

SaxonApiException - if a serialization error occurs

Since:

9.3

getXMLStreamWriter

public StreamWriterToReceiver getXMLStreamWriter()
                                          throws SaxonApiException

Get an XMLStreamWriter that can be used for writing application-generated XML to be output via this serializer.

Returns:

a newly constructed XMLStreamWriter that pipes events into this Serializer

Throws:

IllegalStateException - if no Processor has been set for this Serializer

SaxonApiException - if any other failure occurs

Since:

9.3

getOutputDestination

public Object getOutputDestination()

Get the current output destination.

Returns:

an OutputStream, Writer, or File, depending on the previous calls to setOutputStream(java.io.OutputStream), setOutputWriter(java.io.Writer), or setOutputFile(java.io.File); or null, if no output destination has been set up.

getReceiver

public Receiver getReceiver(Configuration config)
                     throws SaxonApiException

Return a receiver to which Saxon will send events. This method is provided primarily for internal use, though it could also be called by user applications wanting to make use of the Saxon serializer.

Specified by:

getReceiver in interface Destination

Parameters:

config - The Saxon configuration. This is an internal implementation object held within the Processor

Returns:

a receiver to which XML events will be sent

Throws:

SaxonApiException - if the Receiver cannot be created

getReceiver

protected Receiver getReceiver(Executable executable)
                        throws SaxonApiException

Return a receiver to which Saxon will send events. This method is provided primarily for internal use, though it could also be called by user applications wanting to make use of the Saxon serializer.

Parameters:

executable - The Saxon Executable for the transformation or query. The serialization properties defined in this Serializer are supplemented by properties that have been defined in the query or stylesheet associated with the Executable. The properties defined in this Serializer take precedence over those in the stylesheet or query.

Returns:

a receiver to which XML events will be sent

Throws:

SaxonApiException - if any failure occurs

getOutputProperties

protected Properties getOutputProperties()

Create a Properties object holding the defined serialization properties. This will be in the same format as JAXP interfaces such as Transformer.getOutputProperties()

Returns:

a newly-constructed Properties object holding the declared serialization properties

getResult

protected Result getResult()

Get the JAXP StreamResult object representing the output destination of this serializer

close

public void close()
           throws SaxonApiException

Close any resources associated with this destination. Note that this does not close any user-supplied OutputStream or Writer; those must be closed explicitly by the calling application.

Specified by:

close in interface Destination

Throws:

SaxonApiException - if any failure occurs