| /* |
| * Copyright 2006 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. |
| */ |
| |
| package org.apache.ws.commons.schema.utils; |
| |
| import org.apache.ws.commons.schema.constants.Constants; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| |
| /** |
| * Searches for namespace prefix declarations. |
| */ |
| public abstract class PrefixCollector { |
| /** |
| * Records a single namespace prefix declaration. |
| */ |
| protected abstract void declare(String pPrefix, String pNamespaceURI); |
| |
| /** |
| * Searches for namespace prefix declarations in the given node. |
| * For any prefix declaration, it invokes {@link #declare(String, String)}. |
| * This method doesn't work recursively: The parent nodes prefix |
| * declarations are ignored. |
| */ |
| public void searchLocalPrefixDeclarations(Node pNode) { |
| if (pNode.getNodeType() == Node.ELEMENT_NODE) { |
| NamedNodeMap map = pNode.getAttributes(); |
| for (int i = 0; i < map.getLength(); i++) { |
| Node attr = map.item(i); |
| final String uri = attr.getNamespaceURI(); |
| if (Constants.XMLNS_ATTRIBUTE_NS_URI.equals(uri)) { |
| String localName = attr.getLocalName(); |
| String prefix = Constants.XMLNS_ATTRIBUTE.equals(localName) ? Constants.DEFAULT_NS_PREFIX : localName; |
| declare(prefix, attr.getNodeValue()); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Searches for namespace prefix declarations in the given node. |
| * For any prefix declaration, it invokes {@link #declare(String, String)}. |
| * This method works recursively: The parent nodes prefix |
| * declarations are collected before the current nodes. |
| */ |
| public void searchAllPrefixDeclarations(Node pNode) { |
| Node parent = pNode.getParentNode(); |
| if (parent != null) { |
| searchAllPrefixDeclarations(parent); |
| } |
| searchLocalPrefixDeclarations(pNode); |
| } |
| } |