Package net.sf.saxon

Class Controller

  • All Implemented Interfaces:
    InstructionInfoProvider
    Direct Known Subclasses:
    IdentityTransformer

    public class Controller
    extends javax.xml.transform.Transformer
    implements InstructionInfoProvider
    The Controller is Saxon's implementation of the JAXP Transformer class, and represents an executing instance of a transformation or query. Multiple concurrent executions of the same transformation or query will use different Controller instances. This class is therefore not thread-safe.

    The Controller is serially reusable, as required by JAXP: when one transformation or query is finished, it can be used to run another. However, there is no advantage in doing this rather than allocating a new Controller each time.

    The Controller can also be used when running Java applications that use neither XSLT nor XQuery. A dummy Controller is created when running free-standing XPath expressions.

    The Controller holds those parts of the dynamic context that do not vary during the course of a transformation or query, or that do not change once their value has been computed. This also includes those parts of the static context that are required at run-time.

    Wherever possible XSLT applications should use the JAXP Transformer class directly, rather than relying on Saxon-specific methods in the Controller. However, some features are currently available only through this class. This applies especially to new features specific to XSLT 2.0, since the JAXP interface still supports only XSLT 1.0. Such methods may be superseded in the future by JAXP methods.

    Many methods on the Controller are designed for internal use and should not be considered stable. From release 8.4 onwards, those methods that are considered sufficiently stable to constitute path of the Saxon public API are labelled with the JavaDoc tag "since": the value indicates the release at which the method was added to the public API.

    Since:
    8.4
    Author:
    Michael H. Kay
    • Constructor Detail

      • Controller

        public Controller​(Configuration config)
        Create a Controller and initialise variables. Constructor is protected, the Controller should be created using newTransformer() in the PreparedStylesheet class.
        Parameters:
        config - The Configuration used by this Controller
      • Controller

        public Controller​(Configuration config,
                          Executable executable)
        Create a Controller and initialise variables. Constructor is protected, the Controller should be created using newTransformer() in the PreparedStylesheet class.
        Parameters:
        config - The Configuration used by this Controller
        executable - The executable used by this Controller
    • Method Detail

      • reset

        public void reset()

        Reset this Transformer to its original configuration.

        Transformer is reset to the same state as when it was created with TransformerFactory.newTransformer(), TransformerFactory.newTransformer(javax.xml.transform.Source source) or Templates.newTransformer(). reset() is designed to allow the reuse of existing Transformers thus saving resources associated with the creation of new Transformers.

        The above is from the JAXP specification. With Saxon, it's unlikely that reusing a Transformer will give any performance benefits over creating a new one. The one case where it might be beneficial is to reuse the document pool (the set of documents that have been loaded using the doc() or document() functions). Therefore, this method does not clear the document pool. If you want to clear the document pool, call the method clearDocumentPool() as well.

        The reset Transformer is not guaranteed to have the same URIResolver or ErrorListener Objects, e.g. Object.equals(Object obj). It is guaranteed to have a functionally equal URIResolver and ErrorListener.

        Overrides:
        reset in class javax.xml.transform.Transformer
        Since:
        1.5
      • getConfiguration

        public Configuration getConfiguration()
        Get the Configuration associated with this Controller. The Configuration holds settings that potentially apply globally to many different queries and transformations.
        Returns:
        the Configuration object
        Since:
        8.4
      • setInitialMode

        public void setInitialMode​(java.lang.String expandedModeName)
        Set the initial mode for the transformation.

        XSLT 2.0 allows a transformation to be started in a mode other than the default mode. The transformation then starts by looking for the template rule in this mode that best matches the initial context node.

        This method may eventually be superseded by a standard JAXP method.

        Parameters:
        expandedModeName - the name of the initial mode. The mode is supplied as an expanded QName, that is "localname" if there is no namespace, or "{uri}localname" otherwise
        Since:
        8.4
      • getInitialMode

        public java.lang.String getInitialMode()
        Get the initial mode for the transformation
        Returns:
        the initial mode, as a name in Clark format
      • setOutputProperties

        public void setOutputProperties​(java.util.Properties properties)
        Set the output properties for the transformation. These properties will override properties set in the templates with xsl:output.

        As well as the properties defined in the JAXP OutputKeys class, Saxon defines an additional set of properties in SaxonOutputKeys. These fall into two categories: Constants representing serialization properties defined in XSLT 2.0 (which are not yet supported by JAXP), and constants supporting Saxon extensions to the set of serialization properties.

        Specified by:
        setOutputProperties in class javax.xml.transform.Transformer
        Parameters:
        properties - the output properties to be used for the transformation. If the value is null, the properties are reset to be the properties of the Templates object (that is, for XSLT 2.0, the properties set in the unnamed xsl:output object).
        Throws:
        java.lang.IllegalArgumentException - if any of the properties are invalid (other than properties in a user-defined namespace)
        Since:
        8.4
        See Also:
        SaxonOutputKeys
      • getOutputProperties

        public java.util.Properties getOutputProperties()
        Get the output properties for the transformation.

        As well as the properties defined in the JAXP OutputKeys class, Saxon defines an additional set of properties in SaxonOutputKeys. These fall into two categories: Constants representing serialization properties defined in XSLT 2.0 (which are not yet supported by JAXP), and constants supporting Saxon extensions to the set of serialization properties.

        Specified by:
        getOutputProperties in class javax.xml.transform.Transformer
        Returns:
        the output properties being used for the transformation, including properties defined in the stylesheet for the unnamed output format
        Since:
        8.4
        See Also:
        SaxonOutputKeys
      • setOutputProperty

        public void setOutputProperty​(java.lang.String name,
                                      java.lang.String value)
        Set an output property for the transformation.

        As well as the properties defined in the JAXP OutputKeys class, Saxon defines an additional set of properties in SaxonOutputKeys. These fall into two categories: Constants representing serialization properties defined in XSLT 2.0 (which are not yet supported by JAXP), and constants supporting Saxon extensions to the set of serialization properties.

        Specified by:
        setOutputProperty in class javax.xml.transform.Transformer
        Parameters:
        name - the name of the property
        value - the value of the property
        Throws:
        java.lang.IllegalArgumentException - if the property is invalid (except for properties in a user-defined namespace)
        Since:
        8.4
        See Also:
        SaxonOutputKeys
      • getOutputProperty

        public java.lang.String getOutputProperty​(java.lang.String name)
        Get the value of an output property.

        As well as the properties defined in the JAXP OutputKeys class, Saxon defines an additional set of properties in SaxonOutputKeys. These fall into two categories: Constants representing serialization properties defined in XSLT 2.0 (which are not yet supported by JAXP), and constants supporting Saxon extensions to the set of serialization properties.

        Specified by:
        getOutputProperty in class javax.xml.transform.Transformer
        Parameters:
        name - the name of the requested property
        Returns:
        the value of the requested property
        Since:
        8.4
        See Also:
        SaxonOutputKeys
      • setBaseOutputURI

        public void setBaseOutputURI​(java.lang.String uri)
        Set the base output URI. This defaults to the system ID of the principal Result object, but a different value can be set for use where there is no principal result. The command line interface sets this to the current working directory.

        The concept of the base output URI is new in XSLT 2.0: it defines the base URI for resolving relative URIs in the href attribute of the xsl:result-document instruction. This method may be superseded by a standard JAXP method when JAXP is updated to support XSLT 2.0.

        Parameters:
        uri - the base output URI
        Since:
        8.4
      • getBaseOutputURI

        public java.lang.String getBaseOutputURI()
        Get the base output URI. This defaults to the system ID of the principal Result object, but a different value can be set for use where there is no principal result. The command line interface sets this to the current working directory.

        The concept of the base output URI is new in XSLT 2.0: it defines the base URI for resolving relative URIs in the href attribute of the xsl:result-document instruction. This method may be superseded by a standard JAXP method when JAXP is updated to support XSLT 2.0.

        Returns:
        the base output URI
        Since:
        8.4
      • getPrincipalResult

        public javax.xml.transform.Result getPrincipalResult()
        Get the principal result destination.

        This method is intended for internal use only.

      • checkUniqueOutputDestination

        public boolean checkUniqueOutputDestination​(java.lang.String uri)
        Check that an output destination has not been used before, optionally adding this URI to the set of URIs that have been used.
        Parameters:
        uri - the URI to be used as the output destination
        Returns:
        true if the URI is available for use; false if it has already been used.

        This method is intended for internal use only.

      • addUnavailableOutputDestination

        public void addUnavailableOutputDestination​(java.lang.String uri)
        Add a URI to the set of output destinations that cannot be written to, either because they have already been written to, or because they have been read
      • isUnusedOutputDestination

        public boolean isUnusedOutputDestination​(java.lang.String uri)
        Determine whether an output URI is available for use. This method is intended for use by applications, via an extension function.
        Parameters:
        uri - A uri that the application is proposing to use in the href attribute of xsl:result-document: if this function returns false, then the xsl:result-document call will fail saying the URI has already been used.
        Returns:
        true if the URI is available for use. Note that this function is not "stable": it may return different results for the same URI at different points in the transformation.
      • checkImplicitResultTree

        public void checkImplicitResultTree()
                                     throws XPathException
        Check whether an XSLT implicit result tree can be written. This is allowed only if no xsl:result-document has been written for the principal output URI
        Throws:
        XPathException
      • allocateSequenceOutputter

        public SequenceOutputter allocateSequenceOutputter​(int size)
        Allocate a SequenceOutputter for a new output destination. Reuse the existing one if it is available for reuse (this is designed to ensure that the TinyTree structure is also reused, creating a forest of trees all sharing the same data structure)
      • reuseSequenceOutputter

        public void reuseSequenceOutputter​(SequenceOutputter out)
        Accept a SequenceOutputter that is now available for reuse
      • setInitialTemplate

        public void setInitialTemplate​(java.lang.String expandedName)
                                throws XPathException
        Set the initial named template to be used as the entry point.

        XSLT 2.0 allows a transformation to start by executing a named template, rather than by matching an initial context node in a source document. This method may eventually be superseded by a standard JAXP method once JAXP supports XSLT 2.0.

        Although the Saxon command line interface does not allow both a source document and an initial template to be specified, this API has no such restriction.

        Note that any parameters supplied using setParameter(java.lang.String, java.lang.Object) are used as the values of global stylesheet parameters. There is no way to supply values for local parameters of the initial template.

        Parameters:
        expandedName - The expanded name of the template in {uri}local format
        Throws:
        XPathException - if there is no named template with this name
        Since:
        8.4
      • getInitialTemplate

        public java.lang.String getInitialTemplate()
        Get the initial template
        Returns:
        the name of the initial template, as an expanded name in Clark format if set, or null otherwise
        Since:
        8.7
      • makePipelineConfiguration

        public PipelineConfiguration makePipelineConfiguration()
        Make a PipelineConfiguration based on the properties of this Controller.

        This interface is intended primarily for internal use, although it may be necessary for applications to call it directly for use in conjunction with the experimental pull API.

      • makeMessageEmitter

        public Emitter makeMessageEmitter()
                                   throws XPathException
        Make an Emitter to be used for xsl:message output.

        This method is intended for internal use only.

        Returns:
        The newly constructed message Emitter
        Throws:
        XPathException - if any dynamic error occurs; in particular, if the registered MessageEmitter class is not an Emitter
      • setMessageEmitter

        public void setMessageEmitter​(Emitter emitter)
        Set the Emitter to be used for xsl:message output.

        Recent versions of the JAXP interface specify that by default the output of xsl:message is sent to the registered ErrorListener. Saxon does not yet implement this convention. Instead, the output is sent to a default message emitter, which is a slightly customised implementation of the standard Saxon Emitter interface.

        This interface can be used to change the way in which Saxon outputs xsl:message output.

        It is not necessary to use this interface in order to change the destination to which messages are written: that can be achieved by obtaining the standard message emitter and calling its Emitter.setWriter(java.io.Writer) method.

        This method is intended for use by advanced applications. The Emitter interface itself is not part of the stable Saxon public API.

        Parameters:
        emitter - The emitter to receive xsl:message output.
      • getMessageEmitter

        public Emitter getMessageEmitter()
        Get the Emitter used for xsl:message output. This returns the emitter previously supplied to the setMessageEmitter(net.sf.saxon.event.Emitter) method, or the default message emitter otherwise.
        Returns:
        the Emitter being used for xsl:message output
      • makeCharacterMapExpander

        public CharacterMapExpander makeCharacterMapExpander​(java.lang.String useMaps,
                                                             SerializerFactory sf)
                                                      throws XPathException
        Make a CharacterMapExpander to handle the character map definitions in the serialization properties.

        This method is intended for internal use only.

        Parameters:
        useMaps - the expanded use-character-maps property: a space-separated list of names of character maps to be used, each one expressed as an expanded-QName in Clark notation (that is, {uri}local-name).
        Returns:
        a CharacterMapExpander if one is required, or null if not (for example, if the useMaps argument is an empty string).
        Throws:
        XPathException - if a name in the useMaps property cannot be resolved to a declared character map.
      • getRecoveryPolicy

        public int getRecoveryPolicy()
        Get the policy for handling recoverable errors
        Returns:
        the current policy. If none has been set with this Controller, the value registered with the Configuration is returned.
        Since:
        8.7.1
      • setErrorListener

        public void setErrorListener​(javax.xml.transform.ErrorListener listener)
        Set the error listener.
        Specified by:
        setErrorListener in class javax.xml.transform.Transformer
        Parameters:
        listener - the ErrorListener to be used
      • getErrorListener

        public javax.xml.transform.ErrorListener getErrorListener()
        Get the error listener.
        Specified by:
        getErrorListener in class javax.xml.transform.Transformer
        Returns:
        the ErrorListener in use
      • recoverableError

        public void recoverableError​(XPathException err)
                              throws DynamicError
        Report a recoverable error. This is an XSLT concept: by default, such an error results in a warning message, and processing continues. In XQuery, however, there are no recoverable errors so a fatal error is reported.

        This method is intended for internal use only.

        Parameters:
        err - An exception holding information about the error
        Throws:
        DynamicError - if the error listener decides not to recover from the error
      • reportFatalError

        public void reportFatalError​(XPathException err)
        Report a fatal error
      • getExecutable

        public Executable getExecutable()
        Get the Executable object.

        This method is intended for internal use only.

        Returns:
        the Executable (which represents the compiled stylesheet)
      • getDocumentPool

        public DocumentPool getDocumentPool()
        Get the document pool. This is used only for source documents, not for stylesheet modules.

        This method is intended for internal use only.

        Returns:
        the source document pool
      • clearDocumentPool

        public void clearDocumentPool()
        Clear the document pool. This is sometimes useful when re-using the same Transformer for a sequence of transformations, but it isn't done automatically, because when the transformations use common look-up documents, the caching is beneficial.
      • setPrincipalSourceDocument

        public void setPrincipalSourceDocument​(DocumentInfo doc)
        Deprecated.
        From Saxon 8.7, replaced by setInitialContextItem(Item)
        Set the initial context node (used for evaluating global variables). When a transformation is invoked using the transform(javax.xml.transform.Source, javax.xml.transform.Result) method, the initial context node is set automatically. This method is useful in XQuery, to define an initial context node for evaluating global variables, and also in XSLT 2.0, when the transformation is started by invoking a named template.
        Parameters:
        doc - The principal source document
        Since:
        8.4
      • setInitialContextItem

        public void setInitialContextItem​(Item item)
        Set the initial context item.

        When a transformation is invoked using the transform(javax.xml.transform.Source, javax.xml.transform.Result) method, the initial context node is set automatically. This method is useful in XQuery, to define an initial context node for evaluating global variables, and also in XSLT 2.0, when the transformation is started by invoking a named template.

        When an initial context item is set, it also becomes the context item used for evaluating global variables. However, the context item for global variables may subsequently be changed independently. In XQuery, the two context items are always the same; in XSLT, the context node for evaluating global variables is the root of the tree containing the initial context item.

        Parameters:
        item - The initial context item. The XSLT specification says that this must be a node; however this restriction is not enforced, and any item can be supplied as an initial context item if the transformation is started by calling a named initial template. (There is no similar restriction in XQuery)
        Since:
        8.7
      • getBindery

        public Bindery getBindery()
        Get the current bindery.

        This method is intended for internal use only.

        Returns:
        the Bindery (in which values of all variables are held)
      • getPrincipalSourceDocument

        public DocumentInfo getPrincipalSourceDocument()
        Deprecated.
        Get the context item used for evaluating global variables, provided this is a document node. If the initial context item is not defined, or is not a node in a document, return null.
        Returns:
        the context item used for evaluating global variables, provided this is a document node, otherwise null
        Since:
        8.4
      • getContextForGlobalVariables

        public Item getContextForGlobalVariables()
        Get the item used as the context for evaluating global variables. In XQuery this is the same as the initial context item; in XSLT it is the root of the tree containing the initial context node.
        Returns:
        the context item for evaluating global variables, or null if there is none
        Since:
        8.7
      • setURIResolver

        public void setURIResolver​(javax.xml.transform.URIResolver resolver)
        Set an object that will be used to resolve URIs used in document(), etc.
        Specified by:
        setURIResolver in class javax.xml.transform.Transformer
        Parameters:
        resolver - An object that implements the URIResolver interface, or null.
      • getURIResolver

        public javax.xml.transform.URIResolver getURIResolver()
        Get the URI resolver.

        This method changed in Saxon 8.5, to conform to the JAXP specification. If there is no user-specified URIResolver, it now returns null; previously it returned the system default URIResolver.

        Specified by:
        getURIResolver in class javax.xml.transform.Transformer
        Returns:
        the user-supplied URI resolver if there is one, or null otherwise.
      • getStandardURIResolver

        public javax.xml.transform.URIResolver getStandardURIResolver()
        Get the fallback URI resolver. This is the URIResolver that Saxon uses when the user-supplied URI resolver returns null.

        This method is intended for internal use only.

        Returns:
        the the system-defined URIResolver
      • setOutputURIResolver

        public void setOutputURIResolver​(OutputURIResolver resolver)
        Set the URI resolver for secondary output documents.

        XSLT 2.0 introduces the xsl:result-document This method may eventually be superseded by a standard JAXP method.

        Parameters:
        resolver - An object that implements the OutputURIResolver interface, or null.
        Since:
        8.4
      • getKeyManager

        public KeyManager getKeyManager()
        Get the KeyManager.

        This method is intended for internal use only.

        Returns:
        the KeyManager, which holds details of all key declarations
      • getNamePool

        public NamePool getNamePool()
        Get the name pool in use. The name pool is responsible for mapping QNames used in source documents and compiled stylesheets and queries into numeric codes. All source documents used by a given transformation or query must use the same name pool as the compiled stylesheet or query.
        Returns:
        the name pool in use
        Since:
        8.4
      • makeBuilder

        public Builder makeBuilder()
        Make a builder for the selected tree model.
        Returns:
        an instance of the Builder for the chosen tree model
        Since:
        8.4
      • makeStripper

        public Stripper makeStripper​(Receiver b)
        Make a Stripper configured to implement the whitespace stripping rules. In the case of XSLT the whitespace stripping rules are normally defined by xsl:strip-space and xsl:preserve-spaceConfiguration.setStripsAllWhiteSpace(boolean).
        Parameters:
        b - the Receiver to which the events filtered by this stripper are to be sent (often a Builder). May be null if the stripper is not being used for filtering into a Builder or other Receiver.
        Returns:
        the required Stripper. A Stripper may be used in two ways. It acts as a filter applied to an event stream, that can be used to remove the events representing whitespace text nodes before they reach a Builder. Alternatively, it can be used to define a view of an existing tree in which the whitespace text nodes are dynamically skipped while navigating the XPath axes.
        Since:
        8.4 - Generalized in 8.5 to accept any Receiver as an argument
      • registerDocument

        public void registerDocument​(DocumentInfo doc,
                                     java.lang.String systemId)
        Add a document to the document pool.

        This method is intended for internal use only.

        Parameters:
        doc - the root node of the document to be added
        systemId - the document-URI property of this document
      • setRuleManager

        public void setRuleManager​(RuleManager r)
        Set the RuleManager, used to manage template rules for each mode.

        This method is intended for internal use only.

        Parameters:
        r - the Rule Manager
      • getRuleManager

        public RuleManager getRuleManager()
        Get the Rule Manager.

        This method is intended for internal use only.

        Returns:
        the Rule Manager, used to hold details of template rules for all modes
      • getTraceListener

        public TraceListener getTraceListener()
        Get the TraceListener. By default, there is no TraceListener, and this method returns null. A TraceListener may be added using the method addTraceListener(net.sf.saxon.trace.TraceListener). If more than one TraceListener has been added, this method will return a composite TraceListener. Because this form this takes is implementation-dependent, this method is not part of the stable Saxon public API.
        Returns:
        the TraceListener used for XSLT or XQuery instruction tracing
      • isTracing

        public final boolean isTracing()
        Test whether instruction execution is being traced. This will be true if (a) at least one TraceListener has been registered using the addTraceListener(net.sf.saxon.trace.TraceListener) method, and (b) tracing has not been temporarily paused using the pauseTracing(boolean) method.
        Returns:
        true if tracing is active, false otherwise
        Since:
        8.4
      • pauseTracing

        public final void pauseTracing​(boolean pause)
        Pause or resume tracing. While tracing is paused, trace events are not sent to any of the registered TraceListeners.
        Parameters:
        pause - true if tracing is to pause; false if it is to resume
        Since:
        8.4
      • addTraceListener

        public void addTraceListener​(TraceListener trace)
        Adds the specified trace listener to receive trace events from this instance. Note that although TraceListeners can be added or removed dynamically, this has no effect unless the stylesheet or query has been compiled with tracing enabled. This is achieved by calling Configuration.setTraceListener(net.sf.saxon.trace.TraceListener) or by setting the attribute FeatureKeys.TRACE_LISTENER on the TransformerFactory. Conversely, if this property has been set in the Configuration or TransformerFactory, the TraceListener will automatically be added to every Controller that uses that Configuration.
        Parameters:
        trace - the trace listener.
        Since:
        8.4
      • removeTraceListener

        public void removeTraceListener​(TraceListener trace)
        Removes the specified trace listener so that the listener will no longer receive trace events.
        Parameters:
        trace - the trace listener.
        Since:
        8.4
      • setPreparedStylesheet

        public void setPreparedStylesheet​(PreparedStylesheet sheet)
        Associate this Controller with a compiled stylesheet.

        This method is intended for internal use only.

        Parameters:
        sheet - the compiled stylesheet
      • setExecutable

        public void setExecutable​(Executable exec)
        Associate this Controller with an Executable. This method is used by the XQuery processor. The Executable object is overkill in this case - the only thing it currently holds are copies of the collation table.

        This method is intended for internal use only

        Parameters:
        exec - the Executable
      • initializeController

        public void initializeController()
                                  throws XPathException
        Initialize the controller ready for a new transformation. This method should not normally be called by users (it is done automatically when transform() is invoked). However, it is available as a low-level API especially for use with XQuery.
        Throws:
        XPathException
      • defineGlobalParameters

        public void defineGlobalParameters​(Bindery bindery)
                                    throws XPathException
        Define the global parameters of the transformation or query.

        This method is intended for internal use only

        Parameters:
        bindery - The Bindery, which holds values of global variables and parameters
        Throws:
        XPathException
      • getUserData

        public java.lang.Object getUserData​(java.lang.Object key,
                                            java.lang.String name)
        Get user data associated with a key. To retrieve user data, two objects are required: an arbitrary object that may be regarded as the container of the data (originally, and typically still, a node in a tree), and a name. The name serves to distingush data objects associated with the same node by different client applications.

        This method is intended primarily for internal use, though it may also be used by advanced applications.

        Parameters:
        key - an object acting as a key for this user data value. This must be equal (in the sense of the equals() method) to the key supplied when the data value was registered using setUserData(java.lang.Object, java.lang.String, java.lang.Object).
        name - the name of the required property
        Returns:
        the value of the required property
      • setUserData

        public void setUserData​(java.lang.Object key,
                                java.lang.String name,
                                java.lang.Object data)
        Set user data associated with a key. To store user data, two objects are required: an arbitrary object that may be regarded as the container of the data (originally, and typically still, a node in a tree), and a name. The name serves to distingush data objects associated with the same node by different client applications.

        This method is intended primarily for internal use, though it may also be used by advanced applications.

        Parameters:
        key - an object acting as a key for this user data value. This must be equal (in the sense of the equals() method) to the key supplied when the data value was registered using setUserData(java.lang.Object, java.lang.String, java.lang.Object). If data for the given object and name already exists, it is overwritten.
        name - the name of the required property
        data - the value of the required property
      • transform

        public void transform​(javax.xml.transform.Source source,
                              javax.xml.transform.Result result)
                       throws javax.xml.transform.TransformerException
        Perform a transformation from a Source document to a Result document.
        Specified by:
        transform in class javax.xml.transform.Transformer
        Parameters:
        source - The input for the source tree. May be null if and only if an initial template has been supplied.
        result - The destination for the result tree.
        Throws:
        XPathException - if the transformation fails. As a special case, the method throws a TerminationException (a subclass of XPathException) if the transformation was terminated using xsl:message terminate="yes".
        javax.xml.transform.TransformerException
      • prepareInputTree

        public NodeInfo prepareInputTree​(javax.xml.transform.Source source)
        Prepare an input tree for processing. This is used when either the initial input, or a Source returned by the document() function, is a NodeInfo or a DOMSource. The preparation consists of wrapping a DOM document inside a wrapper that implements the NodeInfo interface, and/or adding a space-stripping wrapper if the stylesheet strips whitespace nodes.

        This method is intended for internal use.

        Parameters:
        source - the input tree. Must be either a DOMSource or a NodeInfo
        Returns:
        the NodeInfo representing the input node, suitably wrapped.
      • unravel

        public static NodeInfo unravel​(javax.xml.transform.Source source,
                                       Configuration config)
        Get a NodeInfo corresponding to a DOM Node, either by wrapping or unwrapping the DOM Node.

        This method is intended for internal use.

      • transformDocument

        public void transformDocument​(NodeInfo startNode,
                                      javax.xml.transform.Result result)
                               throws javax.xml.transform.TransformerException
        Transform a source XML document supplied as a tree.

        This method is intended for internal use. External applications should use the transform(javax.xml.transform.Source, javax.xml.transform.Result) method, which is part of the JAXP interface. Note that NodeInfo implements the JAXP Source interface, so it may be supplied directly to the transform() method.

        Parameters:
        startNode - A Node that identifies the source document to be transformed and the node where the transformation should start. May be null if the transformation is to start using an initial template.
        result - The output destination
        Throws:
        XPathException - if any dynamic error occurs
        javax.xml.transform.TransformerException
      • preEvaluateGlobals

        public void preEvaluateGlobals​(XPathContext context)
                                throws XPathException
        Pre-evaluate global variables (when debugging/tracing).

        This method is intended for internal use.

        Throws:
        XPathException
      • prepareNextStylesheet

        public javax.xml.transform.Result prepareNextStylesheet​(java.lang.String href,
                                                                java.lang.String baseURI,
                                                                javax.xml.transform.Result result)
                                                         throws javax.xml.transform.TransformerException
        Prepare another stylesheet to handle the output of this one.

        This method is intended for internal use, to support the saxon:next-in-chain extension.

        Parameters:
        href - URI of the next stylesheet to be applied
        baseURI - base URI for resolving href if it's a relative URI
        result - the output destination of the current stylesheet
        Returns:
        a replacement destination for the current stylesheet
        Throws:
        XPathException - if any dynamic error occurs
        javax.xml.transform.TransformerException
      • setParameter

        public void setParameter​(java.lang.String expandedName,
                                 java.lang.Object value)
        Set a parameter for the transformation.

        The following table shows some of the classes that are supported by this method. (Others may also be supported, but continued support is not guaranteed.) Each entry in the table shows first the Java class of the supplied object, and then the type of the resulting XPath value.

        Java ClassXPath 2.0 type
        Stringxs:string
        Booleanxs:boolean
        Integerxs:integer
        Longxs:integer
        Doublexs:double
        Floatxs:float
        BigDecimalxs:decimal
        BigIntegerxs:integer
        Datexs:dateTime
        Array or List of any of the abovesequence of the above
        nullempty sequence

        A node may be supplied as a NodeInfo object, a sequence of nodes as an array or List of NodeInfo objects.

        In addition, any object that implements the Saxon Value interface may be supplied, and will be used without conversion.

        A node belong to an external object model (such as DOM, JDOM, or XOM) may be supplied provided (a) that the external object model is registered with the Configuration, and (b) that the node is part of a document tree that has been registered in the document pool.

        Specified by:
        setParameter in class javax.xml.transform.Transformer
        Parameters:
        expandedName - The name of the parameter in {uri}local format
        value - The value object. This must follow the rules above. Other formats in addition to those listed above may be accepted.
        Since:
        8.4
      • clearParameters

        public void clearParameters()
        Reset the parameters to a null list.
        Specified by:
        clearParameters in class javax.xml.transform.Transformer
      • getParameter

        public java.lang.Object getParameter​(java.lang.String expandedName)
        Get a parameter to the transformation. This returns the value of a parameter that has been previously set using the setParameter(java.lang.String, java.lang.Object) method. The value is returned exactly as supplied, that is, before any conversion to an XPath value.
        Specified by:
        getParameter in class javax.xml.transform.Transformer
        Parameters:
        expandedName - the name of the required parameter, in "{uri}local-name" format
        Returns:
        the value of the parameter, if it exists, or null otherwise
      • setCurrentDateTime

        public void setCurrentDateTime​(DateTimeValue dateTime)
                                throws XPathException
        Set the current date and time for this query or transformation. This method is provided primarily for testing purposes, to allow tests to be run with a fixed date and time. The supplied date/time must include a timezone, which is used as the implicit timezone. Calls are ignored if a current date/time has already been established by calling getCurrentDateTime().

        Note that comparisons of date/time values currently use the implicit timezone taken from the system clock, not from the value supplied here.

        Throws:
        XPathException
      • getCurrentDateTime

        public DateTimeValue getCurrentDateTime()
        Get the current date and time for this query or transformation. All calls during one transformation return the same answer.

        This method is intended for internal use.

        Returns:
        Get the current date and time. This will deliver the same value for repeated calls within the same transformation
      • newXPathContext

        public XPathContextMajor newXPathContext()
        Make an XPathContext object for expression evaluation.

        This method is intended for internal use.

        Returns:
        the new XPathContext
      • setRememberedNumber

        public void setRememberedNumber​(NodeInfo node,
                                        int number)
        Set the last remembered node, for node numbering purposes.

        This method is strictly for internal use only.

        Parameters:
        node - the node in question
        number - the number of this node
      • getRememberedNumber

        public int getRememberedNumber​(NodeInfo node)
        Get the number of a node if it is the last remembered one.

        This method is strictly for internal use only.

        Parameters:
        node - the node for which remembered information is required
        Returns:
        the number of this node if known, else -1.
      • setClassLoader

        public void setClassLoader​(java.lang.ClassLoader loader)
        Set a ClassLoader to be used when loading external classes. Examples of classes that are loaded include SAX parsers, localization modules for formatting numbers and dates, extension functions, external object models. In an environment such as Eclipse that uses its own ClassLoader, this ClassLoader should be nominated to ensure that any class loaded by Saxon is identical to a class of the same name loaded by the external environment.

        This method is for application use, but is experimental and subject to change.

        Parameters:
        loader - the ClassLoader to be used.
      • getClassLoader

        public java.lang.ClassLoader getClassLoader()
        Get the ClassLoader supplied using the method setClassLoader(java.lang.ClassLoader). If none has been supplied, return null.

        This method is for application use, but is experimental and subject to change.

        Returns:
        the ClassLoader in use.