## net.sf.saxon.s9api
Class XsltCompiler

    java.lang.Object
      net.sf.saxon.s9api.XsltCompiler

    public class XsltCompiler

extends java.lang.Object

An XsltCompiler object allows XSLT 2.0 stylesheets to be compiled. The compiler holds information that represents the static context for the compilation.

To construct an XsltCompiler, use the factory method `Processor.newXsltCompiler()` on the Processor object.

An XsltCompiler may be used repeatedly to compile multiple queries. Any changes made to the XsltCompiler (that is, to the static context) do not affect queries that have already been compiled. An XsltCompiler may be used concurrently in multiple threads, but it should not then be modified once initialized.

Constructor Summary
`protected` `XsltCompiler(Processor processor)` Protected constructor

Method Summary
`XsltExecutable` `compile(javax.xml.transform.Source source)` Compile a stylesheet.
`javax.xml.transform.ErrorListener` `getErrorListener()` Get the ErrorListener being used during this compilation episode
`javax.xml.transform.URIResolver` `getURIResolver()` Get the URIResolver to be used during stylesheet compilation.
`boolean` `isCompileWithTracing()` Ask whether trace hooks are included in the compiled code.
`void` `setCompileWithTracing(boolean option)` Set whether trace hooks are to be included in the compiled code.
`void` `setErrorListener(javax.xml.transform.ErrorListener listener)` Set the ErrorListener to be used during this compilation episode
`void` `setURIResolver(javax.xml.transform.URIResolver resolver)` Set the URIResolver to be used during stylesheet compilation.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### XsltCompiler

    protected XsltCompiler(Processor processor)

  Protected constructor

  Parameters:
    `processor` - the Saxon processor

Method Detail

### setURIResolver

    public void setURIResolver(javax.xml.transform.URIResolver resolver)

  Set the URIResolver to be used during stylesheet compilation. This URIResolver, despite its name, is not used for resolving relative URIs against a base URI; it is used for dereferencing an absolute URI (after resolution) to return a `Source` representing the location where a stylesheet module can be found.

  This URIResolver is used to dereference the URIs appearing in `xsl:import`, `xsl:include`, and `xsl:import-schema` declarations. It is not used at run-time for resolving requests to the `document()` or similar functions.

  Parameters:
    `resolver` - the URIResolver to be used during stylesheet compilation.

### getURIResolver

    public javax.xml.transform.URIResolver getURIResolver()

  Get the URIResolver to be used during stylesheet compilation.

  Returns:
    the URIResolver used during stylesheet compilation. Returns null if no user-supplied URIResolver has been set.

### setErrorListener

    public void setErrorListener(javax.xml.transform.ErrorListener listener)

  Set the ErrorListener to be used during this compilation episode

  Parameters:
    `listener` - The error listener to be used. This is notified of all errors detected during the compilation.

### getErrorListener

    public javax.xml.transform.ErrorListener getErrorListener()

  Get the ErrorListener being used during this compilation episode

  Returns:
    listener The error listener in use. This is notified of all errors detected during the compilation. Returns null if no user-supplied ErrorListener has been set.

### setCompileWithTracing

    public void setCompileWithTracing(boolean option)

  Set whether trace hooks are to be included in the compiled code. To use tracing, it is necessary both to compile the code with trace hooks included, and to supply a TraceListener at run-time

  Parameters:
    `option` - true if trace code is to be compiled in, false otherwise

### isCompileWithTracing

    public boolean isCompileWithTracing()

  Ask whether trace hooks are included in the compiled code.

  Returns:
    true if trace hooks are included, false if not.

### compile

    public XsltExecutable compile(javax.xml.transform.Source source)
                           throws SaxonApiException

  Compile a stylesheet.

  Note: the term "compile" here indicates that the stylesheet is converted into an executable form. There is no implication that this involves code generation.

  The source argument identifies the XML document holding the principal stylesheet module. Other modules will be located relative to this module by resolving against the base URI that is defined as the systemId property of the supplied Source.

  The following kinds of `Source` are recognized:

  - `StreamSource`, allowing the stylesheet to be supplied as a URI, as a `File`, as an `InputStream`, or as a `Reader`
  - `SAXSource`, allowing the stylesheet to be supplied as a stream of SAX events from a SAX2-compliant XML parser (or any other source of SAX events)
  - `DOMSource`, allowing the stylesheet to be supplied as a DOM tree. This option is available only if saxon9-dom.jar is on the classpath.
  - Document wrappers for XOM, JDOM, or DOM4J trees, provided the appropriate support libraries are on the classpath
  - A Saxon NodeInfo, representing the root of a tree in any of the native tree formats supported by Saxon
  - An `XdmNode` representing the document node of the stylesheet module

  Parameters:
    `source` - Source object representing the principal stylesheet module to be compiled
  Returns:
    an XsltExecutable, which represents the compiled stylesheet.
  Throws:
    `SaxonApiException` - if the stylesheet contains static errors or if it cannot be read. Note that the exception that is thrown will not contain details of the actual errors found in the stylesheet. These will instead be notified to the registered ErrorListener. The default ErrorListener displays error messages on the standard error output.

Copyright (c) Saxonica Limited. All rights reserved.