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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.opendaylight.netconf.shaded.xerces.parsers;

import org.opendaylight.netconf.shaded.xerces.xni.Augmentations;
import org.opendaylight.netconf.shaded.xerces.xni.NamespaceContext;
import org.opendaylight.netconf.shaded.xerces.xni.QName;
import org.opendaylight.netconf.shaded.xerces.xni.XMLAttributes;
import org.opendaylight.netconf.shaded.xerces.xni.XMLDTDContentModelHandler;
import org.opendaylight.netconf.shaded.xerces.xni.XMLDTDHandler;
import org.opendaylight.netconf.shaded.xerces.xni.XMLDocumentHandler;
import org.opendaylight.netconf.shaded.xerces.xni.XMLLocator;
import org.opendaylight.netconf.shaded.xerces.xni.XMLResourceIdentifier;
import org.opendaylight.netconf.shaded.xerces.xni.XMLString;
import org.opendaylight.netconf.shaded.xerces.xni.XNIException;
import org.opendaylight.netconf.shaded.xerces.xni.parser.XMLDTDContentModelSource;
import org.opendaylight.netconf.shaded.xerces.xni.parser.XMLDTDSource;
import org.opendaylight.netconf.shaded.xerces.xni.parser.XMLDocumentSource;
import org.opendaylight.netconf.shaded.xerces.xni.parser.XMLParserConfiguration;

/**
 * This is the base class for all XML document parsers. XMLDocumentParser
 * provides a common implementation shared by the various document parsers
 * in the Xerces package. While this class is provided for convenience, it
 * does not prevent other kinds of parsers to be constructed using the XNI
 * interfaces.
 *
 * @author Arnaud  Le Hors, IBM
 * @author Andy Clark, IBM
 *
 * @version $Id: AbstractXMLDocumentParser.java 447239 2006-09-18 05:08:26Z mrglavas $
 */
public abstract class AbstractXMLDocumentParser
    extends XMLParser
    implements XMLDocumentHandler, XMLDTDHandler, XMLDTDContentModelHandler {

    //
    // Data
    //

    // state

    /** True if inside DTD. */
    protected boolean fInDTD;

    /** Document source*/
    protected XMLDocumentSource fDocumentSource;

    /** DTD source*/
    protected XMLDTDSource fDTDSource;

    /** DTD content model source*/
    protected XMLDTDContentModelSource fDTDContentModelSource;

    //
    // Constructors
    //

    /**
     * Constructs a document parser using the default symbol table
     * and grammar pool.
     */
    protected AbstractXMLDocumentParser(XMLParserConfiguration config) {
        super(config);

        // set handlers
        config.setDocumentHandler(this);
        config.setDTDHandler(this);
        config.setDTDContentModelHandler(this);

    } // (XMLParserConfiguration)

    //
    // XMLDocumentHandler methods
    //

    /**
     * The start of the document.
     *
     * @param locator The system identifier of the entity if the entity
     *                 is external, null otherwise.
     * @param encoding The auto-detected IANA encoding name of the entity
     *                 stream. This value will be null in those situations
     *                 where the entity encoding is not auto-detected (e.g.
     *                 internal entities or a document entity that is
     *                 parsed from a java.io.Reader). 
     * @param namespaceContext
     *                 The namespace context in effect at the
     *                 start of this document.
     *                 This object represents the current context.
     *                 Implementors of this class are responsible
     *                 for copying the namespace bindings from the
     *                 the current context (and its parent contexts)
     *                 if that information is important.
     * @param augs   Additional information that may include infoset augmentations    
     *     
     * @throws XNIException Thrown by handler to signal an error.
     */

    public void startDocument(XMLLocator locator, String encoding, 
                              NamespaceContext namespaceContext, Augmentations augs) 
        throws XNIException {
    } // startDocument(XMLLocator,String)

    /**
     * Notifies of the presence of an XMLDecl line in the document. If
     * present, this method will be called immediately following the
     * startDocument call.
     * 
     * @param version    The XML version.
     * @param encoding   The IANA encoding name of the document, or null if
     *                   not specified.
     * @param standalone The standalone value, or null if not specified.
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void xmlDecl(String version, String encoding, String standalone, Augmentations augs)
        throws XNIException {
    } // xmlDecl(String,String,String)

    /**
     * Notifies of the presence of the DOCTYPE line in the document.
     * 
     * @param rootElement The name of the root element.
     * @param publicId    The public identifier if an external DTD or null
     *                    if the external DTD is specified using SYSTEM.
     * @param systemId    The system identifier if an external DTD, null
     * @param augs   Additional information that may include infoset augmentations
     *                    otherwise.
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void doctypeDecl(String rootElement, String publicId, String systemId, Augmentations augs)
        throws XNIException {
    } // doctypeDecl(String,String,String)

    /**
     * The start of an element. If the document specifies the start element
     * by using an empty tag, then the startElement method will immediately
     * be followed by the endElement method, with no intervening methods.
     * 
     * @param element    The name of the element.
     * @param attributes The element attributes.
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void startElement(QName element, XMLAttributes attributes, Augmentations augs)
        throws XNIException {
    } // startElement(QName,XMLAttributes)

    /**
     * An empty element.
     * 
     * @param element    The name of the element.
     * @param attributes The element attributes.
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs)
        throws XNIException {

        startElement(element, attributes, augs);
        endElement(element, augs);

    } // emptyElement(QName,XMLAttributes)

    /**
     * Character content.
     * 
     * @param text The content.
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void characters(XMLString text, Augmentations augs) throws XNIException {
    } // characters(XMLString)

    /**
     * Ignorable whitespace. For this method to be called, the document
     * source must have some way of determining that the text containing
     * only whitespace characters should be considered ignorable. For
     * example, the validator can determine if a length of whitespace
     * characters in the document are ignorable based on the element
     * content model.
     * 
     * @param text The ignorable whitespace.
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
    } // ignorableWhitespace(XMLString)

    /**
     * The end of an element.
     * 
     * @param element The name of the element.
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void endElement(QName element, Augmentations augs) throws XNIException {
    } // endElement(QName)

    /** 
     * The start of a CDATA section. 
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void startCDATA(Augmentations augs) throws XNIException {
    } // startCDATA()

    /**
     * The end of a CDATA section.
     * @param augs   Additional information that may include infoset augmentations 
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void endCDATA(Augmentations augs) throws XNIException {
    } // endCDATA()

    /**
     * The end of the document.
     * @param augs   Additional information that may include infoset augmentations
     *
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void endDocument(Augmentations augs) throws XNIException {
    } // endDocument()


    /**
     * This method notifies the start of an entity.
     * 

* Note: This method is not called for entity references * appearing as part of attribute values. * * @param name The name of the entity. * @param identifier The resource identifier. * @param encoding The auto-detected IANA encoding name of the entity * stream. This value will be null in those situations * where the entity encoding is not auto-detected (e.g. * internal entities or a document entity that is * parsed from a java.io.Reader). * @param augs Additional information that may include infoset augmentations * * @exception XNIException Thrown by handler to signal an error. */ public void startGeneralEntity(String name, XMLResourceIdentifier identifier, String encoding, Augmentations augs) throws XNIException { } // startGeneralEntity(String,XMLResourceIdentifier,String,Augmentations) /** * Notifies of the presence of a TextDecl line in an entity. If present, * this method will be called immediately following the startEntity call. *

* Note: This method will never be called for the * document entity; it is only called for external general entities * referenced in document content. *

* Note: This method is not called for entity references * appearing as part of attribute values. * * @param version The XML version, or null if not specified. * @param encoding The IANA encoding name of the entity. * @param augs Additional information that may include infoset augmentations * * @exception XNIException * Thrown by handler to signal an error. */ public void textDecl(String version, String encoding, Augmentations augs) throws XNIException { } // textDecl(String, String, Augmentations) /** * This method notifies the end of an entity. *

* Note: This method is not called for entity references * appearing as part of attribute values. * * @param name The name of the entity. * @param augs Additional information that may include infoset augmentations * * @exception XNIException * Thrown by handler to signal an error. */ public void endGeneralEntity(String name, Augmentations augs) throws XNIException { } // endGeneralEntity(String,Augmentations) /** * A comment. * * @param text The text in the comment. * @param augs Additional information that may include infoset augmentations * * @exception XNIException * Thrown by application to signal an error. */ public void comment(XMLString text, Augmentations augs) throws XNIException { } // comment (XMLString, Augmentations) /** * A processing instruction. Processing instructions consist of a * target name and, optionally, text data. The data is only meaningful * to the application. *

* Typically, a processing instruction's data will contain a series * of pseudo-attributes. These pseudo-attributes follow the form of * element attributes but are not parsed or presented * to the application as anything other than text. The application is * responsible for parsing the data. * * @param target The target. * @param data The data or null if none specified. * @param augs Additional information that may include infoset augmentations * * @exception XNIException * Thrown by handler to signal an error. */ public void processingInstruction(String target, XMLString data, Augmentations augs) throws XNIException { } // processingInstruction(String, XMLString, Augmentations) /** Sets the document source */ public void setDocumentSource(XMLDocumentSource source){ fDocumentSource = source; } // setDocumentSource /** Returns the document source */ public XMLDocumentSource getDocumentSource (){ return fDocumentSource; } // getDocumentSource // // XMLDTDHandler methods // /** * The start of the DTD. * * @param locator The document locator, or null if the document * location cannot be reported during the parsing of * the document DTD. However, it is strongly * recommended that a locator be supplied that can * at least report the base system identifier of the * DTD. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void startDTD(XMLLocator locator, Augmentations augs) throws XNIException { fInDTD = true; } // startDTD(XMLLocator) /** * The start of the DTD external subset. * * @param augmentations Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void startExternalSubset(XMLResourceIdentifier identifier, Augmentations augmentations) throws XNIException { } // startExternalSubset(Augmentations) /** * The end of the DTD external subset. * * @param augmentations Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void endExternalSubset(Augmentations augmentations) throws XNIException { } // endExternalSubset(Augmentations) /** * This method notifies the start of an entity. *

* Note: This method is not called for entity references * appearing as part of attribute values. * * @param name The name of the entity. * @param identifier The resource identifier. * @param encoding The auto-detected IANA encoding name of the entity * stream. This value will be null in those situations * where the entity encoding is not auto-detected (e.g. * internal entities or a document entity that is * parsed from a java.io.Reader). * @param augs Additional information that may include infoset augmentations * * @exception XNIException Thrown by handler to signal an error. */ public void startParameterEntity(String name, XMLResourceIdentifier identifier, String encoding, Augmentations augs) throws XNIException { } // startParameterEntity(String,XMLResourceIdentifier,String,Augmentations) /** * This method notifies the end of an entity. *

* Note: This method is not called for entity references * appearing as part of attribute values. * * @param name The name of the entity. * @param augs Additional information that may include infoset augmentations * * @exception XNIException * Thrown by handler to signal an error. */ public void endParameterEntity(String name, Augmentations augs) throws XNIException { } // endParameterEntity(String,Augmentations) /** * Characters within an IGNORE conditional section. * * @param text The ignored text. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void ignoredCharacters(XMLString text, Augmentations augs) throws XNIException { } // ignoredCharacters(XMLString, Augmentations) /** * An element declaration. * * @param name The name of the element. * @param contentModel The element content model. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void elementDecl(String name, String contentModel, Augmentations augs) throws XNIException { } // elementDecl(String,String) /** * The start of an attribute list. * * @param elementName The name of the element that this attribute * list is associated with. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void startAttlist(String elementName, Augmentations augs) throws XNIException { } // startAttlist(String) /** * An attribute declaration. * * @param elementName The name of the element that this attribute * is associated with. * @param attributeName The name of the attribute. * @param type The attribute type. This value will be one of * the following: "CDATA", "ENTITY", "ENTITIES", * "ENUMERATION", "ID", "IDREF", "IDREFS", * "NMTOKEN", "NMTOKENS", or "NOTATION". * @param enumeration If the type has the value "ENUMERATION" or * "NOTATION", this array holds the allowed attribute * values; otherwise, this array is null. * @param defaultType The attribute default type. This value will be * one of the following: "#FIXED", "#IMPLIED", * "#REQUIRED", or null. * @param defaultValue The attribute default value, or null if no * default value is specified. * @param nonNormalizedDefaultValue The attribute default value with no normalization * performed, or null if no default value is specified. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void attributeDecl(String elementName, String attributeName, String type, String[] enumeration, String defaultType, XMLString defaultValue, XMLString nonNormalizedDefaultValue, Augmentations augs) throws XNIException { } // attributeDecl(String,String,String,String[],String,XMLString, XMLString, Augmentations) /** * The end of an attribute list. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void endAttlist(Augmentations augs) throws XNIException { } // endAttlist() /** * An internal entity declaration. * * @param name The name of the entity. Parameter entity names start with * '%', whereas the name of a general entity is just the * entity name. * @param text The value of the entity. * @param nonNormalizedText The non-normalized value of the entity. This * value contains the same sequence of characters that was in * the internal entity declaration, without any entity * references expanded. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void internalEntityDecl(String name, XMLString text, XMLString nonNormalizedText, Augmentations augs) throws XNIException { } // internalEntityDecl(String,XMLString,XMLString) /** * An external entity declaration. * * @param name The name of the entity. Parameter entity names start * with '%', whereas the name of a general entity is just * the entity name. * @param identifier An object containing all location information * pertinent to this entity. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void externalEntityDecl(String name, XMLResourceIdentifier identifier, Augmentations augs) throws XNIException { } // externalEntityDecl(String,XMLResourceIdentifier, Augmentations) /** * An unparsed entity declaration. * * @param name The name of the entity. * @param identifier An object containing all location information * pertinent to this entity. * @param notation The name of the notation. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void unparsedEntityDecl(String name, XMLResourceIdentifier identifier, String notation, Augmentations augs) throws XNIException { } // unparsedEntityDecl(String,XMLResourceIdentifier, String, Augmentations) /** * A notation declaration * * @param name The name of the notation. * @param identifier An object containing all location information * pertinent to this notation. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void notationDecl(String name, XMLResourceIdentifier identifier, Augmentations augs) throws XNIException { } // notationDecl(String,XMLResourceIdentifier, Augmentations) /** * The start of a conditional section. * * @param type The type of the conditional section. This value will * either be CONDITIONAL_INCLUDE or CONDITIONAL_IGNORE. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. * * @see #CONDITIONAL_INCLUDE * @see #CONDITIONAL_IGNORE */ public void startConditional(short type, Augmentations augs) throws XNIException { } // startConditional(short) /** * The end of a conditional section. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void endConditional(Augmentations augs) throws XNIException { } // endConditional() /** * The end of the DTD. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void endDTD(Augmentations augs) throws XNIException { fInDTD = false; } // endDTD() // set the source of this handler public void setDTDSource(XMLDTDSource source) { fDTDSource = source; } // return the source from which this handler derives its events public XMLDTDSource getDTDSource() { return fDTDSource; } // // XMLDTDContentModelHandler methods // /** * The start of a content model. Depending on the type of the content * model, specific methods may be called between the call to the * startContentModel method and the call to the endContentModel method. * * @param elementName The name of the element. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void startContentModel(String elementName, Augmentations augs) throws XNIException { } // startContentModel(String, Augmentations) /** * A content model of ANY. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. * * @see #empty * @see #startGroup */ public void any(Augmentations augs) throws XNIException { } // any(Augmentations) /** * A content model of EMPTY. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. * * @see #any * @see #startGroup */ public void empty(Augmentations augs) throws XNIException { } // empty(Augmentations) /** * A start of either a mixed or children content model. A mixed * content model will immediately be followed by a call to the * pcdata() method. A children content model will * contain additional groups and/or elements. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. * * @see #any * @see #empty */ public void startGroup(Augmentations augs) throws XNIException { } // stargGroup(Augmentations) /** * The appearance of "#PCDATA" within a group signifying a * mixed content model. This method will be the first called * following the content model's startGroup(). * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. * * @see #startGroup */ public void pcdata(Augmentations augs) throws XNIException { } // pcdata(Augmentations) /** * A referenced element in a mixed or children content model. * * @param elementName The name of the referenced element. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void element(String elementName, Augmentations augs) throws XNIException { } // element(String, Augmentations) /** * The separator between choices or sequences of a mixed or children * content model. * * @param separator The type of children separator. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. * * @see #SEPARATOR_CHOICE * @see #SEPARATOR_SEQUENCE */ public void separator(short separator, Augmentations augs) throws XNIException { } // separator(short, Augmentations) /** * The occurrence count for a child in a children content model or * for the mixed content model group. * * @param occurrence The occurrence count for the last element * or group. * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. * * @see #OCCURS_ZERO_OR_ONE * @see #OCCURS_ZERO_OR_MORE * @see #OCCURS_ONE_OR_MORE */ public void occurrence(short occurrence, Augmentations augs) throws XNIException { } // occurence(short, Augmentations) /** * The end of a group for mixed or children content models. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void endGroup(Augmentations augs) throws XNIException { } // endGroup(Augmentations) /** * The end of a content model. * * @param augs Additional information that may include infoset * augmentations. * * @throws XNIException Thrown by handler to signal an error. */ public void endContentModel(Augmentations augs) throws XNIException { } // endContentModel(Augmentations) // set content model source public void setDTDContentModelSource(XMLDTDContentModelSource source) { fDTDContentModelSource = source; } // get content model source public XMLDTDContentModelSource getDTDContentModelSource() { return fDTDContentModelSource; } // // Protected methods // /** * reset all components before parsing */ protected void reset() throws XNIException { super.reset(); fInDTD = false; } // reset() } // class AbstractXMLDocumentParser





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