/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.pvm.internal.xml;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.w3c.dom.Element;
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/** a set of {@link Binding}s divided into categories managed by a {@link Parser}.
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*
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* <a href="./Parser.html#bindings">See also 'Bindinds'</a>
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* @see Parser
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* @author Tom Baeyens
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*/
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public class Bindings {
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/** maps categories to a list of bindings */
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protected Map<String, List<Binding>> bindings = null;
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public Bindings() {
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}
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/** to be used when you want to customize the binding behaviour of a {@link Parser}. */
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public Bindings(Bindings other) {
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if (other.bindings!=null) {
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bindings = new HashMap<String, List<Binding>>();
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Set<String> categorieNames = other.bindings.keySet();
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if (categorieNames!=null) {
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for (String categoryName: categorieNames) {
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List<Binding> categoryBindings = other.bindings.get(categoryName);
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List<Binding> categoryBindingsCopy = new ArrayList<Binding>(categoryBindings);
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bindings.put(categoryName, categoryBindingsCopy);
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}
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}
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}
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}
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/** get a binding for the given element and category.
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* If the category is null, then all the categories will be searched for a binding in random order.
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*/
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public Binding getBinding(Element element) {
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return getBinding(element, (String)null);
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}
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/** get a binding for the given element and category.
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* If the category is null, then all the categories will be searched for a binding in random order.
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*/
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public Binding getBinding(Element element, String category) {
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if (bindings==null) {
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return null;
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}
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// if no category is specified
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if (category==null) {
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// search in all categories
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for (List<Binding> categoryBindings : bindings.values()) {
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Binding binding = getBinding(element, categoryBindings);
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if (binding != null) {
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return binding;
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}
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}
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} else {
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List<Binding> categoryBindings = bindings.get(category);
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if (categoryBindings!=null) {
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return getBinding(element, categoryBindings);
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}
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}
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return null;
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}
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protected Binding getBinding(Element element, List<Binding> categoryBindings) {
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for (Binding binding: categoryBindings) {
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if (binding.matches(element)) {
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return binding;
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}
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}
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return null;
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}
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/** add an elementParser to this parser that will handle parsing of
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* elements of the given tagName for the default category. */
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public void addBinding(Binding binding) {
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if (bindings==null) {
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bindings = new HashMap<String, List<Binding>>();
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}
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String category = binding.getCategory();
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List<Binding> categoryBindings = bindings.get(category);
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if (categoryBindings==null){
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categoryBindings = new ArrayList<Binding>();
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bindings.put(category, categoryBindings);
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}
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categoryBindings.add(binding);
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}
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/** the set of all tagNames for which there is a binding specified in the given category */
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public Set<String> getTagNames(String category) {
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Set<String> tagNames = new HashSet<String>();
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List<Binding> categoryBindings = (bindings!=null ? bindings.get(category) : null );
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if (categoryBindings!=null) {
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for (Binding binding: categoryBindings) {
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tagNames.add(binding.toString());
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}
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}
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return tagNames;
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}
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}
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