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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/* $Id$ */
package org.apache.fop.fo;
import java.util.HashMap;
/**
* Abstract base class for Element Mappings (including FO Element Mappings)
* which provide the framework of valid elements and attibutes for a given
* namespace.
*/
public abstract class ElementMapping {
/** constant for defining the default value */
public static final String DEFAULT = "<default>";
/** The HashMap table of formatting objects defined by the ElementMapping */
protected HashMap foObjs = null;
/** The namespace for the ElementMapping */
protected String namespaceURI = null;
/**
* Returns a HashMap of maker objects for this element mapping
*
* @return Table of Maker objects for this ElementMapping
*/
public HashMap getTable() {
if (foObjs == null) {
initialize();
}
return foObjs;
}
/**
* Returns the namespace URI for this element mapping
*
* @return Namespace URI for this element mapping
*/
public String getNamespaceURI() {
return namespaceURI;
}
/**
* Initializes the set of maker objects associated with this ElementMapping
*/
protected abstract void initialize();
public static class Maker {
public FONode make(FONode parent) {
return null;
}
}
}
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