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JAXP 1.1: Package javax.xml.transform.sax
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<H2>
Package javax.xml.transform.sax
</H2>
This package implements SAX2-specific transformation APIs.
<P>
<B>See: </B>
<BR>
<A HREF="#package_description"><B>Description</B></A>
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<B>Interface Summary</B></FONT></TD>
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<TD WIDTH="15%"><B><A HREF="TemplatesHandler.html"><I>TemplatesHandler</I></A></B></TD>
<TD>A SAX ContentHandler that may be used to process SAX
parse events (parsing transformation instructions) into a Templates object.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="TransformerHandler.html"><I>TransformerHandler</I></A></B></TD>
<TD>A TransformerHandler
listens for SAX ContentHandler parse events and transforms
them to a Result.</TD>
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<B>Class Summary</B></FONT></TD>
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<TD WIDTH="15%"><B><A HREF="SAXResult.html">SAXResult</A></B></TD>
<TD>Acts as an holder for a transformation Result.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="SAXSource.html">SAXSource</A></B></TD>
<TD>Acts as an holder for SAX-style Source.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="SAXTransformerFactory.html">SAXTransformerFactory</A></B></TD>
<TD>This class extends TransformerFactory to provide SAX-specific
factory methods.</TD>
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<A NAME="package_description"><!-- --></A><H2>
Package javax.xml.transform.sax Description
</H2>
<P>
<p>This package implements SAX2-specific transformation APIs. It provides
classes which allow input from <A HREF="../../../../org/xml/sax/ContentHandler.html"><CODE>ContentHandler</CODE></A>
events, and also classes that produce org.xml.sax.ContentHandler events. It
also provides methods to set the input source as an
<A HREF="../../../../org/xml/sax/XMLReader.html"><CODE>XMLReader</CODE></A>, or to use a
<A HREF="../../../../org/xml/sax/InputSource.html"><CODE>InputSource</CODE></A> as the source. It also allows the
creation of a <A HREF="../../../../org/xml/sax/XMLFilter.html"><CODE>XMLFilter</CODE></A>, which enables
transformations to "pull" from other transformations, and lets the transformer
to be used polymorphically as an <A HREF="../../../../org/xml/sax/XMLReader.html"><CODE>XMLReader</CODE></A>.</p>
<p>The <A HREF="../../../../javax/xml/transform/sax/SAXSource.html"><CODE>SAXSource</CODE></A> class allows the
setting of an <A HREF="../../../../org/xml/sax/XMLReader.html"><CODE>XMLReader</CODE></A> to be used for "pulling"
parse events, and an <A HREF="../../../../org/xml/sax/InputSource.html"><CODE>InputSource</CODE></A> that may be used to
specify the SAX source.</p>
<p>The <A HREF="../../../../javax/xml/transform/sax/SAXResult.html"><CODE>SAXResult</CODE></A> class allows the
setting of a <A HREF="../../../../org/xml/sax/ContentHandler.html"><CODE>ContentHandler</CODE></A> to be the receiver of
SAX2 events from the transformation.
<p>The <A HREF="../../../../javax/xml/transform/sax/SAXTransformerFactory.html"><CODE>SAXTransformerFactory</CODE></A> extends
<A HREF="../../../../javax/xml/transform/TransformerFactory.html"><CODE>TransformerFactory</CODE></A> to provide factory
methods for creating <A HREF="../../../../javax/xml/transform/sax/TemplatesHandler.html"><CODE>TemplatesHandler</CODE></A>,
<A HREF="../../../../javax/xml/transform/sax/TransformerHandler.html"><CODE>TransformerHandler</CODE></A>, and
<A HREF="../../../../org/xml/sax/XMLReader.html"><CODE>XMLReader</CODE></A> instances.</p>
<p>To obtain a <A HREF="../../../../javax/xml/transform/sax/SAXTransformerFactory.html"><CODE>SAXTransformerFactory</CODE></A>,
the caller must cast the <A HREF="../../../../javax/xml/transform/TransformerFactory.html"><CODE>TransformerFactory</CODE></A>
instance returned from
<A HREF="../../../../javax/xml/transform/TransformerFactory.html#newInstance()"><CODE>TransformerFactory.newInstance()</CODE></A>.
<p>The <A HREF="../../../../javax/xml/transform/sax/TransformerHandler.html"><CODE>TransformerHandler</CODE></A> interface
allows a transformation to be created from SAX2 parse events, which is a "push"
model rather than the "pull" model that normally occurs for a transformation.
Normal parse events are received through the
<A HREF="../../../../org/xml/sax/ContentHandler.html"><CODE>ContentHandler</CODE></A> interface, lexical events such as
startCDATA and endCDATA are received through the
<A HREF="../../../../org/xml/sax/ext/LexicalHandler.html"><CODE>LexicalHandler</CODE></A> interface, and events that signal
the start or end of disabling output escaping are received via
<A HREF="../../../../org/xml/sax/ContentHandler.html#processingInstruction(java.lang.String, java.lang.String)"><CODE>ContentHandler.processingInstruction(java.lang.String, java.lang.String)</CODE></A>, with the
target parameter being
<A HREF="../../../../javax/xml/transform/Result.html#PI_DISABLE_OUTPUT_ESCAPING"><CODE>Result.PI_DISABLE_OUTPUT_ESCAPING</CODE></A> and
<A HREF="../../../../javax/xml/transform/Result.html#PI_ENABLE_OUTPUT_ESCAPING"><CODE>Result.PI_ENABLE_OUTPUT_ESCAPING</CODE></A>. If
parameters, output properties, or other features need to be set on the
Transformer handler, a <A HREF="../../../../javax/xml/transform/Transformer.html"><CODE>Transformer</CODE></A> reference
will need to be obtained from
<A HREF="../../../../javax/xml/transform/sax/TransformerHandler.html#getTransformer()"><CODE>TransformerHandler.getTransformer()</CODE></A>, and
the methods invoked from that reference.
<p>The <A HREF="../../../../javax/xml/transform/sax/TemplatesHandler.html"><CODE>TemplatesHandler</CODE></A> interface
allows the creation of <A HREF="../../../../javax/xml/transform/Templates.html"><CODE>Templates</CODE></A> objects
from SAX2 parse events. Once the <A HREF="../../../../org/xml/sax/ContentHandler.html"><CODE>ContentHandler</CODE></A>
events are complete, the Templates object may be obtained from
<A HREF="../../../../javax/xml/transform/sax/TemplatesHandler.html#getTemplates()"><CODE>TemplatesHandler.getTemplates()</CODE></A>. Note that
<A HREF="../../../../javax/xml/transform/sax/TemplatesHandler.html#setSystemId(java.lang.String)"><CODE>TemplatesHandler.setSystemId(java.lang.String)</CODE></A> should
normally be called in order to establish a base system ID from which relative
URLs may be resolved.
<p>The
<A HREF="../../../../javax/xml/transform/sax/SAXTransformerFactory.html#newXMLFilter(javax.xml.transform.Source)"><CODE>SAXTransformerFactory.newXMLFilter(javax.xml.transform.Source)</CODE></A>
method allows the creation of a <A HREF="../../../../org/xml/sax/XMLFilter.html"><CODE>XMLFilter</CODE></A>, which
encapsulates the SAX2 notion of a "pull" transformation. The following
illustrates several transformations chained together. Each filter points to a
parent <A HREF="../../../../org/xml/sax/XMLReader.html"><CODE>XMLReader</CODE></A>, and the final transformation is
caused by invoking <A HREF="../../../../org/xml/sax/XMLReader.html#parse(org.xml.sax.InputSource)"><CODE>XMLReader.parse(org.xml.sax.InputSource)</CODE></A> on the final
reader in the chain.</p>
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