Package org.jdom.transform

Class XSLTransformer

  • public class XSLTransformer
extends Object
    A convenience class to handle simple transformations. The JAXP TrAX classes have more bells and whistles and can be used with JDOMSource and JDOMResult for advanced uses. This class handles the common case and presents a simple interface. XSLTransformer is thread safe and may be used from multiple threads. 
    
 XSLTransformer transformer = new XSLTransformer("file.xsl");

 Document x2 = transformer.transform(x);  // x is a Document
 Document y2 = transformer.transform(y);  // y is a Document
    JDOM relies on TrAX to perform the transformation. The javax.xml.transform.TransformerFactory Java system property determines which XSLT engine TrAX uses. Its value should be the fully qualified name of the implementation of the abstract javax.xml.transform.TransformerFactory class. Values of this property for popular XSLT processors include:

    • Saxon 6.x: com.icl.saxon.TransformerFactoryImpl
    • Saxon 7.x: net.sf.saxon.TransformerFactoryImpl
    • Xalan: org.apache.xalan.processor.TransformerFactoryImpl
    • jd.xslt: jd.xml.xslt.trax.TransformerFactoryImpl
    • Oracle: oracle.xml.jaxp.JXSAXTransformerFactory

    This property can be set in all the usual ways a Java system property can be set. TrAX picks from them in this order:

    1. Invoking System.setProperty( "javax.xml.transform.TransformerFactory", "classname")
    2. The value specified at the command line using the -Djavax.xml.transform.TransformerFactory=classname option to the java interpreter
    3. The class named in the lib/jaxp.properties properties file in the JRE directory, in a line like this one: 
      javax.xml.parsers.DocumentBuilderFactory=classname
    4. The class named in the META-INF/services/javax.xml.transform.TransformerFactory file in the JAR archives available to the runtime
    5. Finally, if all of the above options fail, a default implementation is chosen. In Sun's JDK 1.4, this is Xalan 2.2d10.

    • Constructor Detail

      • XSLTransformer

        public XSLTransformer​(String stylesheetSystemId)
               throws XSLTransformException
        Creates a transformer for a given stylesheet system id.
        Parameters:
        stylesheetSystemId - source stylesheet as a Source object
        Throws:
        XSLTransformException - if there's a problem in the TrAX back-end

      • XSLTransformer

        public XSLTransformer​(InputStream stylesheet)
               throws XSLTransformException

        This will create a new XSLTransformer by reading the stylesheet from the specified InputStream.

        Parameters:
        stylesheet - InputStream from which the stylesheet is read.
        Throws:
        XSLTransformException - when an IOException, format error, or something else prevents the stylesheet from being compiled

      • XSLTransformer

        public XSLTransformer​(Reader stylesheet)
               throws XSLTransformException

        This will create a new XSLTransformer by reading the stylesheet from the specified Reader.

        Parameters:
        stylesheet - Reader from which the stylesheet is read.
        Throws:
        XSLTransformException - when an IOException, format error, or something else prevents the stylesheet from being compiled

      • XSLTransformer

        public XSLTransformer​(File stylesheet)
               throws XSLTransformException

        This will create a new XSLTransformer by reading the stylesheet from the specified File.

        Parameters:
        stylesheet - File from which the stylesheet is read.
        Throws:
        XSLTransformException - when an IOException, format error, or something else prevents the stylesheet from being compiled

      • XSLTransformer

        public XSLTransformer​(Document stylesheet)
               throws XSLTransformException

        This will create a new XSLTransformer by reading the stylesheet from the specified Document.

        Parameters:
        stylesheet - Document containing the stylesheet.
        Throws:
        XSLTransformException - when the supplied Document is not syntactically correct XSLT

    • Method Detail

      • transform

        public Document transform​(Document inputDoc)
                   throws XSLTransformException
        Transforms the given document to an output document.
        Parameters:
        inputDoc - input document
        Returns:
        transformed output document
        Throws:
        XSLTransformException - if there's a problem in the transformation

      • transform

        public Document transform​(Document inputDoc,
                          EntityResolver resolver)
                   throws XSLTransformException
        Transforms the given document to an output document.
        Parameters:
        inputDoc - input document
        resolver - entity resolver for the input document
        Returns:
        transformed output document
        Throws:
        XSLTransformException - if there's a problem in the transformation

      • setFactory

        public void setFactory​(JDOMFactory factory)
        Sets a custom JDOMFactory to use when building the transformation result. Use a custom factory to build the tree with your own subclasses of the JDOM classes.
        Parameters:
        factory - the custom JDOMFactory to use or null to use the default JDOM classes.
        See Also:
        getFactory()

      • getFactory

        public JDOMFactory getFactory()
        Returns the custom JDOMFactory used to build the transformation result.
        Returns:
        the custom JDOMFactory used to build the transformation result or null if the default JDOM classes are being used.
        See Also:
        setFactory(org.jdom.JDOMFactory)