| /* |
| * 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.axiom.core; |
| |
| /** |
| * Selects elements based on some match rule. |
| */ |
| public interface ElementMatcher<T extends CoreElement> { |
| /** |
| * Matches any {@link CoreElement}. |
| */ |
| ElementMatcher<CoreElement> ANY = new ElementMatcher<CoreElement>() { |
| public boolean matches(CoreElement element, String namespaceURI, String name) { |
| return true; |
| } |
| }; |
| |
| /** |
| * Matches {@link CoreNSAwareElement} nodes by qualified name, i.e. namespace URI and local name. |
| */ |
| ElementMatcher<CoreNSAwareElement> BY_QNAME = new ElementMatcher<CoreNSAwareElement>() { |
| public boolean matches(CoreNSAwareElement element, String namespaceURI, String name) { |
| return name.equals(element.coreGetLocalName()) |
| && namespaceURI.equals(element.coreGetNamespaceURI()); |
| } |
| }; |
| |
| /** |
| * Matches {@link CoreNSAwareElement} nodes by namespace URI. |
| */ |
| ElementMatcher<CoreNSAwareElement> BY_NAMESPACE_URI = new ElementMatcher<CoreNSAwareElement>() { |
| public boolean matches(CoreNSAwareElement element, String namespaceURI, String name) { |
| return namespaceURI.equals(element.coreGetNamespaceURI()); |
| } |
| }; |
| |
| /** |
| * Matches {@link CoreNSAwareElement} nodes by local name. |
| */ |
| ElementMatcher<CoreNSAwareElement> BY_LOCAL_NAME = new ElementMatcher<CoreNSAwareElement>() { |
| public boolean matches(CoreNSAwareElement element, String namespaceURI, String name) { |
| return name.equals(element.coreGetLocalName()); |
| } |
| }; |
| |
| /** |
| * Matches elements (of any kind) by tag name. |
| */ |
| ElementMatcher<CoreElement> BY_NAME = new ElementMatcher<CoreElement>() { |
| public boolean matches(CoreElement element, String namespaceURI, String name) { |
| if (element instanceof CoreNSUnawareElement) { |
| return name.equals(((CoreNSUnawareElement)element).coreGetName()); |
| } else { |
| CoreNSAwareElement nsAwareElement = (CoreNSAwareElement)element; |
| String prefix = nsAwareElement.coreGetPrefix(); |
| int prefixLength = prefix.length(); |
| String localName = nsAwareElement.coreGetLocalName(); |
| if (prefixLength == 0) { |
| return name.equals(localName); |
| } else { |
| int localNameLength = localName.length(); |
| if (prefixLength + localNameLength + 1 == name.length()) { |
| if (name.charAt(prefixLength) != ':') { |
| return false; |
| } |
| for (int i=0; i<localNameLength; i++) { |
| if (name.charAt(prefixLength+i+1) != localName.charAt(i)) { |
| return false; |
| } |
| } |
| for (int i=0; i<prefix.length(); i++) { |
| if (name.charAt(i) != prefix.charAt(i)) { |
| return false; |
| } |
| } |
| return true; |
| } else { |
| return false; |
| } |
| } |
| } |
| } |
| }; |
| |
| /** |
| * Check if the given element matches. The values of the <code>namespaceURI</code> and |
| * <code>name</code> parameters are those passed to |
| * {@link CoreParentNode#coreGetElements(Axis, Class, ElementMatcher, String, String, ExceptionTranslator, Semantics)}. |
| * |
| * @param element |
| * the element to check |
| * @param namespaceURI |
| * see above |
| * @param name |
| * see above |
| * @return <code>true</code> if the element matches, <code>false</code> otherwise |
| */ |
| boolean matches(T element, String namespaceURI, String name); |
| } |