src/main/java/org/apache/tika/sax/ContentHandlerDecorator.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one or more
   3  * contributor license agreements.  See the NOTICE file distributed with
   4  * this work for additional information regarding copyright ownership.
   5  * The ASF licenses this file to You under the Apache License, Version 2.0
   6  * (the "License"); you may not use this file except in compliance with
   7  * the License.  You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17 package org.apache.tika.sax;
  18
  19 import org.xml.sax.Attributes;
  20 import org.xml.sax.ContentHandler;
  21 import org.xml.sax.Locator;
  22 import org.xml.sax.SAXException;
  23 import org.xml.sax.helpers.DefaultHandler;
  24
  25 /**
  26  * Decorator base class for the {@link ContentHandler} interface. This class
  27  * simply delegates all SAX events calls to an underlying decorated handler
  28  * instance. Subclasses can provide extra decoration by overriding one or more
  29  * of the SAX event methods.
  30  */
  31 public class ContentHandlerDecorator extends DefaultHandler {
  32
  33     /**
  34      * Decorated SAX event handler.
  35      */
  36     private final ContentHandler handler;
  37
  38     /**
  39      * Creates a decorator for the given SAX event handler.
  40      *
  41      * @param handler SAX event handler to be decorated
  42      */
  43     public ContentHandlerDecorator(ContentHandler handler) {
  44         this.handler = handler;
  45     }
  46
  47     public void startPrefixMapping(String prefix, String uri)
  48             throws SAXException {
  49         handler.startPrefixMapping(prefix, uri);
  50     }
  51
  52     public void endPrefixMapping(String prefix) throws SAXException {
  53         handler.endPrefixMapping(prefix);
  54     }
  55
  56     public void processingInstruction(String target, String data)
  57             throws SAXException {
  58         handler.processingInstruction(target, data);
  59     }
  60
  61     public void setDocumentLocator(Locator locator) {
  62         handler.setDocumentLocator(locator);
  63     }
  64
  65     public void startDocument() throws SAXException {
  66         handler.startDocument();
  67     }
  68
  69     public void endDocument() throws SAXException {
  70         handler.endDocument();
  71     }
  72
  73     public void startElement(String uri, String localName, String name,
  74             Attributes atts) throws SAXException {
  75         handler.startElement(uri, localName, name, atts);
  76     }
  77
  78     public void endElement(String uri, String localName, String name)
  79             throws SAXException {
  80         handler.endElement(uri, localName, name);
  81     }
  82
  83     public void characters(char[] ch, int start, int length)
  84             throws SAXException {
  85         handler.characters(ch, start, length);
  86     }
  87
  88     public void ignorableWhitespace(char[] ch, int start, int length)
  89             throws SAXException {
  90         handler.ignorableWhitespace(ch, start, length);
  91     }
  92
  93     public void skippedEntity(String name) throws SAXException {
  94         handler.skippedEntity(name);
  95     }
  96
  97     public String toString() {
  98         return handler.toString();
  99     }
 100
 101 }