org.apache.xerces.parsers.AbstractXMLDocumentParser Maven / Gradle / Ivy
/*
* 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.apache.xerces.parsers;
import org.apache.xerces.xni.Augmentations;
import org.apache.xerces.xni.NamespaceContext;
import org.apache.xerces.xni.QName;
import org.apache.xerces.xni.XMLAttributes;
import org.apache.xerces.xni.XMLDTDContentModelHandler;
import org.apache.xerces.xni.XMLDTDHandler;
import org.apache.xerces.xni.XMLDocumentHandler;
import org.apache.xerces.xni.XMLLocator;
import org.apache.xerces.xni.XMLResourceIdentifier;
import org.apache.xerces.xni.XMLString;
import org.apache.xerces.xni.XNIException;
import org.apache.xerces.xni.parser.XMLDTDContentModelSource;
import org.apache.xerces.xni.parser.XMLDTDSource;
import org.apache.xerces.xni.parser.XMLDocumentSource;
import org.apache.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