Package net.sf.saxon.dom

Class DOMEnvelope

  • All Implemented Interfaces:
    ExternalObjectModel
    public class DOMEnvelope
extends java.lang.Object
implements ExternalObjectModel
    DOMEnvelope is an object model representation in which DOM interfaces are wrapped around Saxon NodeInfo nodes: that is, it implements the DOM on top of a Saxon tree implementation such as the tiny tree or linked tree.

    • Constructor Summary

      Constructors 
      Constructor Description
      DOMEnvelope()
      Public constructor.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      ActiveSource getActiveSource​(javax.xml.transform.Source supplied)
      Give this ExternalObjectModel the opportunity of recognising a Source object and returning an ActiveSource, which will be used to send an instance of this external model to a supplied Receiver.
      Receiver getDocumentBuilder​(javax.xml.transform.Result result)
      Test whether this object model recognizes a particular kind of JAXP Result object, and if it does, return a Receiver that builds an instance of this data model from a sequence of events.
      java.lang.String getDocumentClassName()
      Get the name of a characteristic class, which, if it can be loaded, indicates that the supporting libraries for this object model implementation are available on the classpath
      java.lang.String getIdentifyingURI()
      Get the URI of the external object model as used in the JAXP factory interfaces for obtaining an XPath implementation
      static DOMEnvelope getInstance()
      Get the singular instance (this class is stateless)
      JPConverter getJPConverter​(java.lang.Class sourceClass, Configuration config)
      Get a converter from values in the external object model to XPath values.
      PJConverter getNodeListCreator​(java.lang.Object node)
      Get a converter that converts a sequence of XPath nodes to this model's representation of a node list.
      PJConverter getPJConverter​(java.lang.Class<?> targetClass)
      Get a converter from XPath values to values in the external object model
      boolean isRecognizedNode​(java.lang.Object object)
      Test whether this object model recognizes a given node as one of its own
      boolean isRecognizedNodeClass​(java.lang.Class nodeClass)
      Test whether this object model recognizes a given class as representing a node in that object model.
      NodeInfo unravel​(javax.xml.transform.Source source, Configuration config)
      Wrap or unwrap a node using this object model to return the corresponding Saxon node.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • DOMEnvelope

        public DOMEnvelope()
        Public constructor. (Use the singular instance in preference to creating a new one).

    • Method Detail

      • getInstance

        public static DOMEnvelope getInstance()
        Get the singular instance (this class is stateless)
        Returns:
        the singular instance

      • getDocumentClassName

        public java.lang.String getDocumentClassName()
        Get the name of a characteristic class, which, if it can be loaded, indicates that the supporting libraries for this object model implementation are available on the classpath
        Specified by:
        getDocumentClassName in interface ExternalObjectModel
        Returns:
        by convention (but not necessarily) the class that implements a document node in the relevant external model

      • getIdentifyingURI

        public java.lang.String getIdentifyingURI()
        Get the URI of the external object model as used in the JAXP factory interfaces for obtaining an XPath implementation
        Specified by:
        getIdentifyingURI in interface ExternalObjectModel
        Returns:
        the URI used to identify this object model in the JAXP XPath factory mechanism.

      • getPJConverter

        public PJConverter getPJConverter​(java.lang.Class<?> targetClass)
        Description copied from interface: ExternalObjectModel
        Get a converter from XPath values to values in the external object model
        Specified by:
        getPJConverter in interface ExternalObjectModel
        Parameters:
        targetClass - the required class of the result of the conversion. If this class represents a node or list of nodes in the external object model, the method should return a converter that takes a native node or sequence of nodes as input and returns a node or sequence of nodes in the external object model representation. Otherwise, it should return null.
        Returns:
        a converter, if the targetClass is recognized as belonging to this object model; otherwise null

      • getJPConverter

        public JPConverter getJPConverter​(java.lang.Class sourceClass,
                                  Configuration config)
        Description copied from interface: ExternalObjectModel
        Get a converter from values in the external object model to XPath values.
        Specified by:
        getJPConverter in interface ExternalObjectModel
        Parameters:
        sourceClass - the class (static or dynamic) of values to be converted
        config - the Saxon Configuration object
        Returns:
        a converter, if the sourceClass is recognized as belonging to this object model; otherwise null

      • getNodeListCreator

        public PJConverter getNodeListCreator​(java.lang.Object node)
        Get a converter that converts a sequence of XPath nodes to this model's representation of a node list.
        Specified by:
        getNodeListCreator in interface ExternalObjectModel
        Parameters:
        node - an example of the kind of node used in this model
        Returns:
        if the model does not recognize this node as one of its own, return null. Otherwise return a PJConverter that takes a list of XPath nodes (represented as NodeInfo objects) and returns a collection of nodes in this object model

      • isRecognizedNode

        public boolean isRecognizedNode​(java.lang.Object object)
        Test whether this object model recognizes a given node as one of its own
        Parameters:
        object - the object to be tested
        Returns:
        true if the supplied object is a node in this object model

      • isRecognizedNodeClass

        public boolean isRecognizedNodeClass​(java.lang.Class nodeClass)
        Test whether this object model recognizes a given class as representing a node in that object model. This method will generally be called at compile time.
        Parameters:
        nodeClass - A class that possibly represents nodes
        Returns:
        true if the class is used to represent nodes in this object model

      • getDocumentBuilder

        public Receiver getDocumentBuilder​(javax.xml.transform.Result result)
        Test whether this object model recognizes a particular kind of JAXP Result object, and if it does, return a Receiver that builds an instance of this data model from a sequence of events. If the Result is not recognised, return null.

        This implementation always returns null: it is not possible to construct an instance of this object model implementation directly as the result of a JAXP transformation.

        Specified by:
        getDocumentBuilder in interface ExternalObjectModel
        Parameters:
        result - a JAXP result object
        Returns:
        always null in this implementation

      • getActiveSource

        public ActiveSource getActiveSource​(javax.xml.transform.Source supplied)
        Give this ExternalObjectModel the opportunity of recognising a Source object and returning an ActiveSource, which will be used to send an instance of this external model to a supplied Receiver. The default implementation returns null.
        Specified by:
        getActiveSource in interface ExternalObjectModel
        Parameters:
        supplied - a supplied Source
        Returns:
        an ActiveSource object if the source is recognised, or null if not

      • unravel

        public NodeInfo unravel​(javax.xml.transform.Source source,
                        Configuration config)
        Wrap or unwrap a node using this object model to return the corresponding Saxon node. If the supplied source does not belong to this object model, return null
        Specified by:
        unravel in interface ExternalObjectModel
        Parameters:
        source - a JAXP Source object
        config - the Saxon configuration
        Returns:
        a NodeInfo corresponding to the Source, if this can be constructed; otherwise null