Class SerializerFactory

  • Direct Known Subclasses:
    SerializerFactoryPE

    public class SerializerFactory
    extends java.lang.Object
    Helper class to construct a serialization pipeline for a given result destination and a given set of output properties. The pipeline is represented by a Receiver object to which result tree events are sent.

    Since Saxon 8.8 is is possible to write a subclass of SerializerFactory and register it with the Configuration, allowing customisation of the Serializer pipeline.

    The class includes methods for instantiating each of the components used on the Serialization pipeline. This allows a customized SerializerFactory to replace any or all of these components by subclasses that refine the behaviour.

    • Constructor Detail

      • SerializerFactory

        public SerializerFactory​(Configuration config)
        Create a SerializerFactory
        Parameters:
        config - the Saxon Configuration
    • Method Detail

      • getXMLStreamWriter

        public StreamWriterToReceiver getXMLStreamWriter​(javax.xml.transform.stream.StreamResult result,
                                                         java.util.Properties properties)
                                                  throws XPathException
        Create a serializer with given output properties, and return an XMLStreamWriter that can be used to feed events to the serializer.
        Parameters:
        result - the destination of the serialized output (wraps a Writer, an OutputStream, or a File)
        properties - the serialization properties to be used
        Returns:
        a serializer in the form of an XMLStreamWriter
        Throws:
        XPathException - if any error occurs
      • getReceiver

        public Receiver getReceiver​(javax.xml.transform.Result result,
                                    PipelineConfiguration pipe,
                                    java.util.Properties props)
                             throws XPathException
        Deprecated.
        since Saxon 9.9: use one of the other getReceiver methods
        Get a Receiver that wraps a given Result object. Saxon calls this method to construct a serialization pipeline. The method can be overridden in a subclass; alternatively, the subclass can override the various methods used to instantiate components of the serialization pipeline.

        Note that this method ignores the SaxonOutputKeys.WRAP output property. If wrapped output is required, the user must create a SequenceWrapper directly.

        The effect of the method changes in Saxon 9.7 so that for serialization methods other than "json" and "adaptive", the returned Receiver performs the function of "sequence normalization" as defined in the Serialization specification. Previously the client code handled this by wrapping the result in a ComplexContentOutputter (usually as a side-effect of called XPathContext.changeOutputDestination()). Wrapping in a ComplexContentOutputter is no longer necessary, though it does no harm because the ComplexContentOutputter is idempotent.

        Changed in 9.9 so that no character maps are used. Previously the character maps from the Executable associated with the Controller referenced from the PipelineConfiguration were used.

        Parameters:
        result - The final destination of the serialized output. Usually a StreamResult, but other kinds of Result are possible.
        pipe - The PipelineConfiguration.
        props - The serialization properties. If this includes the property SaxonOutputKeys.USE_CHARACTER_MAPS then the PipelineConfiguration must contain a non-null Controller, and the Executable associated with this Controller must have a CharacterMapIndex which is used to resolve the names of the character maps appearing in this property.
        Returns:
        the newly constructed Receiver that performs the required serialization
        Throws:
        XPathException - if any failure occurs
      • getReceiver

        public Receiver getReceiver​(javax.xml.transform.Result result)
                             throws XPathException
        Get a Receiver that wraps a given Result object. Saxon calls this method to construct a serialization pipeline. The method can be overridden in a subclass; alternatively, the subclass can override the various methods used to instantiate components of the serialization pipeline.

        This version of the method calls getReceiver(Result, SerializationProperties, PipelineConfiguration) supplying default output properties, and a PipelineConfiguration newly constructed using Configuration.makePipelineConfiguration().

        Parameters:
        result - The final destination of the serialized output. Usually a StreamResult, but other kinds of Result are possible.
        Throws:
        XPathException - if a serializer cannot be created
      • getReceiver

        public Receiver getReceiver​(javax.xml.transform.Result result,
                                    SerializationProperties params)
                             throws XPathException
        Get a Receiver that wraps a given Result object. Saxon calls this method to construct a serialization pipeline. The method can be overridden in a subclass; alternatively, the subclass can override the various methods used to instantiate components of the serialization pipeline.

        This version of the method calls getReceiver(Result, SerializationProperties, PipelineConfiguration) supplying a PipelineConfiguration newly constructed using Configuration.makePipelineConfiguration().

        Parameters:
        result - The final destination of the serialized output. Usually a StreamResult, but other kinds of Result are possible.
        params - The serialization properties, including character maps
        Returns:
        the newly constructed Receiver that performs the required serialization
        Throws:
        XPathException - if a serializer cannot be created
      • getReceiver

        public Receiver getReceiver​(javax.xml.transform.Result result,
                                    SerializationProperties params,
                                    PipelineConfiguration pipe)
                             throws XPathException
        Get a Receiver that wraps a given Result object. Saxon calls this method to construct a serialization pipeline. The method can be overridden in a subclass; alternatively, the subclass can override the various methods used to instantiate components of the serialization pipeline.

        Note that this method ignores the SaxonOutputKeys.WRAP output property. If wrapped output is required, the user must create a SequenceWrapper directly.

        The effect of the method changes in Saxon 9.7 so that for serialization methods other than "json" and "adaptive", the returned Receiver performs the function of "sequence normalization" as defined in the Serialization specification. Previously the client code handled this by wrapping the result in a ComplexContentOutputter (usually as a side-effect of called XPathContext.changeOutputDestination()). Wrapping in a ComplexContentOutputter is no longer necessary, though it does no harm because the ComplexContentOutputter is idempotent.

        Parameters:
        result - The final destination of the serialized output. Usually a StreamResult, but other kinds of Result are possible.
        params - The serialization properties, including character maps
        pipe - The PipelineConfiguration.
        Returns:
        the newly constructed Receiver that performs the required serialization
        Throws:
        XPathException - if a serializer cannot be created
      • makeSequenceNormalizer

        public SequenceReceiver makeSequenceNormalizer​(Receiver receiver,
                                                       java.util.Properties properties)
      • createHTMLSerializer

        protected SequenceReceiver createHTMLSerializer​(Emitter emitter,
                                                        SerializationProperties params,
                                                        PipelineConfiguration pipe)
                                                 throws XPathException
        Create a serialization pipeline to implement the HTML output method. This method is protected so that it can be customized in a user-written SerializerFactory
        Parameters:
        emitter - the emitter at the end of the pipeline (created using the method newHTMLEmitter(java.util.Properties)
        params - the serialization properties
        pipe - the pipeline configuration information
        Returns:
        a Receiver acting as the entry point to the serialization pipeline
        Throws:
        XPathException - if a failure occurs
      • createTextSerializer

        protected SequenceReceiver createTextSerializer​(Emitter emitter,
                                                        SerializationProperties params)
                                                 throws XPathException
        Create a serialization pipeline to implement the text output method. This method is protected so that it can be customized in a user-written SerializerFactory
        Parameters:
        emitter - the emitter at the end of the pipeline (created using the method newTEXTEmitter()
        params - the serialization properties
        Returns:
        a Receiver acting as the entry point to the serialization pipeline
        Throws:
        XPathException - if a failure occurs
      • customizeJSONSerializer

        protected SequenceReceiver customizeJSONSerializer​(JSONSerializer emitter,
                                                           java.util.Properties props,
                                                           CharacterMapExpander characterMapExpander,
                                                           ProxyReceiver normalizer)
                                                    throws XPathException
        Create a serialization pipeline to implement the JSON output method. This method is protected so that it can be customized in a user-written SerializerFactory
        Parameters:
        emitter - the emitter at the end of the pipeline (created using the method newTEXTEmitter()
        props - the serialization properties
        characterMapExpander - the filter to be used for expanding character maps defined in the stylesheet
        normalizer - the filter used for Unicode normalization
        Returns:
        a Receiver acting as the entry point to the serialization pipeline
        Throws:
        XPathException
      • customizeAdaptiveSerializer

        protected SequenceReceiver customizeAdaptiveSerializer​(AdaptiveEmitter emitter,
                                                               java.util.Properties props,
                                                               CharacterMapExpander characterMapExpander,
                                                               ProxyReceiver normalizer)
        Create a serialization pipeline to implement the Adaptive output method. This method is protected so that it can be customized in a user-written SerializerFactory
        Parameters:
        emitter - the emitter at the end of the pipeline
        props - the serialization properties
        characterMapExpander - the filter to be used for expanding character maps defined in the stylesheet
        normalizer - the filter used for Unicode normalization
        Returns:
        a Receiver acting as the entry point to the serialization pipeline
      • createXHTMLSerializer

        protected SequenceReceiver createXHTMLSerializer​(Emitter emitter,
                                                         SerializationProperties params,
                                                         PipelineConfiguration pipe)
                                                  throws XPathException
        Create a serialization pipeline to implement the XHTML output method. This method is protected so that it can be customized in a user-written SerializerFactory
        Parameters:
        emitter - the emitter at the end of the pipeline (created using the method newXHTMLEmitter(java.util.Properties)
        params - the serialization properties
        pipe - the pipeline configuration information
        Returns:
        a Receiver acting as the entry point to the serialization pipeline
        Throws:
        XPathException - if a failure occurs
      • addHtml5Component

        public Receiver addHtml5Component​(Receiver target,
                                          java.util.Properties outputProperties)
        This method constructs a step in the output pipeline to perform namespace-related tasks for HTML5 serialization. The default implementation adds a NamespaceReducer and an XHTMLPrefixRemover
        Parameters:
        target - the Receiver that receives the output of this step
        outputProperties - the serialization properties
        Returns:
        a new Receiver to perform HTML5-related namespace manipulation
      • createXMLSerializer

        protected SequenceReceiver createXMLSerializer​(XMLEmitter emitter,
                                                       SerializationProperties params)
                                                throws XPathException
        Create a serialization pipeline to implement the XML output method. This method is protected so that it can be customized in a user-written SerializerFactory
        Parameters:
        emitter - the emitter at the end of the pipeline (created using the method newXMLEmitter(java.util.Properties)
        params - the serialization properties
        Returns:
        a Receiver acting as the entry point to the serialization pipeline
        Throws:
        XPathException - if a failure occurs
      • createUserDefinedOutputMethod

        protected SequenceReceiver createUserDefinedOutputMethod​(java.lang.String method,
                                                                 java.util.Properties props,
                                                                 PipelineConfiguration pipe)
                                                          throws XPathException
        Create a serialization pipeline to implement a user-defined output method. This method is protected so that it can be customized in a user-written SerializerFactory
        Parameters:
        method - the name of the user-defined output method, as a QName in Clark format (that is "{uri}local").
        props - the serialization properties
        pipe - the pipeline configuration information
        Returns:
        a Receiver acting as the entry point to the serialization pipeline
        Throws:
        XPathException - if a failure occurs
      • newContentHandlerProxy

        protected ContentHandlerProxy newContentHandlerProxy()
        Create a ContentHandlerProxy. This method exists so that it can be overridden in a subclass.
        Returns:
        the newly created ContentHandlerProxy.
      • newUncommittedSerializer

        protected UncommittedSerializer newUncommittedSerializer​(javax.xml.transform.Result result,
                                                                 Receiver next,
                                                                 SerializationProperties params)
        Create an UncommittedSerializer. This method exists so that it can be overridden in a subclass.
        Parameters:
        result - the result destination
        next - the next receiver in the pipeline
        params - the serialization parameters
        Returns:
        the newly created UncommittedSerializer.
      • newXMLEmitter

        protected Emitter newXMLEmitter​(java.util.Properties properties)
        Create a new XML Emitter. This method exists so that it can be overridden in a subclass.
        Parameters:
        properties - the output properties
        Returns:
        the newly created XML emitter.
      • newHTMLEmitter

        protected Emitter newHTMLEmitter​(java.util.Properties properties)
        Create a new HTML Emitter. This method exists so that it can be overridden in a subclass.
        Parameters:
        properties - the output properties
        Returns:
        the newly created HTML emitter.
      • newXHTMLEmitter

        protected Emitter newXHTMLEmitter​(java.util.Properties properties)
        Create a new XHTML Emitter. This method exists so that it can be overridden in a subclass.
        Parameters:
        properties - the output properties
        Returns:
        the newly created XHTML emitter.
      • addTextOutputFilter

        public Receiver addTextOutputFilter​(Receiver next,
                                            java.util.Properties properties)
                                     throws XPathException
        Add a filter to the text output method pipeline. This does nothing unless overridden in a subclass
        Parameters:
        next - the next receiver (typically the TextEmitter)
        properties - the output properties
        Returns:
        the receiver to be used in place of the "next" receiver
        Throws:
        XPathException - if the operation fails
      • newTEXTEmitter

        protected Emitter newTEXTEmitter()
        Create a new Text Emitter. This method exists so that it can be overridden in a subclass.
        Returns:
        the newly created text emitter.
      • newXMLIndenter

        protected ProxyReceiver newXMLIndenter​(XMLEmitter next,
                                               java.util.Properties outputProperties)
        Create a new XML Indenter. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created XML indenter.
      • newHTMLIndenter

        protected ProxyReceiver newHTMLIndenter​(Receiver next,
                                                java.util.Properties outputProperties)
        Create a new HTML Indenter. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created HTML indenter.
      • newXHTMLIndenter

        protected ProxyReceiver newXHTMLIndenter​(Receiver next,
                                                 java.util.Properties outputProperties)
        Create a new XHTML Indenter. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created XHTML indenter.
      • newXHTMLMetaTagAdjuster

        protected MetaTagAdjuster newXHTMLMetaTagAdjuster​(Receiver next,
                                                          java.util.Properties outputProperties)
        Create a new XHTML MetaTagAdjuster, responsible for insertion, removal, or replacement of meta elements. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created XHTML MetaTagAdjuster.
      • newHTMLMetaTagAdjuster

        protected MetaTagAdjuster newHTMLMetaTagAdjuster​(Receiver next,
                                                         java.util.Properties outputProperties)
        Create a new XHTML MetaTagAdjuster, responsible for insertion, removal, or replacement of meta elements. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created HTML MetaTagAdjuster.
      • newHTMLURIEscaper

        protected ProxyReceiver newHTMLURIEscaper​(Receiver next,
                                                  java.util.Properties outputProperties)
        Create a new HTML URI Escaper, responsible for percent-encoding of URIs in HTML output documents. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created HTML URI escaper.
      • newXHTMLURIEscaper

        protected ProxyReceiver newXHTMLURIEscaper​(Receiver next,
                                                   java.util.Properties outputProperties)
        Create a new XHTML URI Escaper, responsible for percent-encoding of URIs in HTML output documents. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created HTML URI escaper.
      • newCDATAFilter

        protected ProxyReceiver newCDATAFilter​(Receiver next,
                                               java.util.Properties outputProperties)
                                        throws XPathException
        Create a new CDATA Filter, responsible for insertion of CDATA sections where required. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created CDATA filter.
        Throws:
        XPathException - if an error occurs
      • newAttributeSorter

        protected Receiver newAttributeSorter​(Receiver next,
                                              java.util.Properties outputProperties)
                                       throws XPathException
        Create a new AttributeSorter, responsible for sorting of attributes into a specified order. This method exists so that it can be overridden in a subclass. The Saxon-HE version of this method returns the supplied receiver unchanged (attribute sorting is not supported in Saxon-HE). The AttributeSorter handles both sorting of attributes into a user-specified order (saxon:attribute-order) and sorting into C14N order (saxon:canonical).
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created filter.
        Throws:
        XPathException
      • newNamespaceSorter

        protected Receiver newNamespaceSorter​(Receiver next,
                                              java.util.Properties outputProperties)
                                       throws XPathException
        Create a new NamespaceSorter, responsible for sorting of namespaces into a specified order.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created filter.
        Throws:
        XPathException
      • newXML10ContentChecker

        protected ProxyReceiver newXML10ContentChecker​(Receiver next,
                                                       java.util.Properties outputProperties)
        Create a new XML 1.0 content checker, responsible for checking that the output conforms to XML 1.0 rules (this is used only if the Configuration supports XML 1.1 but the specific output file requires XML 1.0). This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created XML 1.0 content checker.
      • newUnicodeNormalizer

        protected ProxyReceiver newUnicodeNormalizer​(Receiver next,
                                                     java.util.Properties outputProperties)
                                              throws XPathException
        Create a Unicode Normalizer. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        outputProperties - the serialization parameters
        Returns:
        the newly created Unicode normalizer.
        Throws:
        XPathException - if an error occurs
      • newCharacterMapExpander

        public CharacterMapExpander newCharacterMapExpander​(Receiver next)
        Create a new CharacterMapExpander. This method exists so that it can be overridden in a subclass.
        Parameters:
        next - the next receiver in the pipeline
        Returns:
        the newly created CharacterMapExpander.
      • prepareNextStylesheet

        public SequenceReceiver prepareNextStylesheet​(PipelineConfiguration pipe,
                                                      java.lang.String href,
                                                      java.lang.String baseURI,
                                                      javax.xml.transform.Result result)
                                               throws XPathException
        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:
        pipe - the current transformation
        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
      • newSequenceWrapper

        public SequenceWrapper newSequenceWrapper​(Receiver destination)
        Get a SequenceWrapper, a class that serializes an XDM sequence with full annotation of item types, node kinds, etc. There are variants for Saxon-HE and Saxon-PE
        Parameters:
        destination - the place where the wrapped sequence will be sent
        Returns:
        the new SequenceWrapper
      • checkOutputProperty

        public java.lang.String checkOutputProperty​(java.lang.String key,
                                                    java.lang.String value)
                                             throws XPathException
        Check that a supplied output property is valid, and normalize the value (specifically in the case of boolean values where yes|true|1 are normalized to "yes", and no|false|0 are normalized to "no"). Clark names in the value ({uri}local) are normalized to EQNames (Q{uri}local)
        Parameters:
        key - the name of the property, in Clark format
        value - the value of the property. This may be set to null, in which case no validation takes place. The value must be in JAXP format, that is, with lexical QNames expanded to either EQNames or Clark names.
        Returns:
        normalized value of the property, or null if the supplied value is null
        Throws:
        XPathException - if the property name or value is invalid
      • checkYesOrNo

        protected static java.lang.String checkYesOrNo​(java.lang.String key,
                                                       java.lang.String value)
                                                throws XPathException
        Throws:
        XPathException
      • checkNonNegativeInteger

        protected static void checkNonNegativeInteger​(java.lang.String key,
                                                      java.lang.String value)
                                               throws XPathException
        Throws:
        XPathException
      • checkListOfEQNames

        protected static java.lang.String checkListOfEQNames​(java.lang.String key,
                                                             java.lang.String value)
                                                      throws XPathException
        Throws:
        XPathException
      • checkListOfEQNamesAllowingStar

        protected static java.lang.String checkListOfEQNamesAllowingStar​(java.lang.String key,
                                                                         java.lang.String value)
                                                                  throws XPathException
        Throws:
        XPathException
      • parseListOfNodeNames

        public static java.lang.String parseListOfNodeNames​(java.lang.String value,
                                                            NamespaceResolver nsResolver,
                                                            boolean useDefaultNS,
                                                            boolean prevalidated,
                                                            java.lang.String errorCode)
                                                     throws XPathException
        Process a serialization property whose value is a list of element names, for example cdata-section-elements
        Parameters:
        value - The value of the property as written
        nsResolver - The namespace resolver to use; may be null if prevalidated is set or if names are supplied in Clark format
        useDefaultNS - True if the namespace resolver should be used for unprefixed names; false if unprefixed names should be considered to be in no namespace
        prevalidated - true if the property has already been validated
        errorCode - The error code to return in the event of problems
        Returns:
        The list of element names with lexical QNames replaced by Clark names, starting with a single space
        Throws:
        XPathException - if any error is found in the list of element names, for example, an undeclared namespace prefix