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Commons JXPath example source code file (NullPointer.java)
The Commons JXPath NullPointer.java source code/* * 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.commons.jxpath.ri.model.beans; import java.util.Locale; import org.apache.commons.jxpath.JXPathContext; import org.apache.commons.jxpath.ri.QName; import org.apache.commons.jxpath.ri.model.NodePointer; /** * Pointer whose value is <code>null. * @author Dmitri Plotnikov * @version $Revision: 652915 $ $Date: 2008-05-02 16:12:57 -0500 (Fri, 02 May 2008) $ */ public class NullPointer extends PropertyOwnerPointer { private QName name; private String id; private static final long serialVersionUID = 2193425983220679887L; /** * Create a new NullPointer. * @param name node name * @param locale Locale */ public NullPointer(QName name, Locale locale) { super(null, locale); this.name = name; } /** * Used for the root node. * @param parent parent pointer * @param name node name */ public NullPointer(NodePointer parent, QName name) { super(parent); this.name = name; } /** * Create a new NullPointer. * @param locale Locale * @param id String */ public NullPointer(Locale locale, String id) { super(null, locale); this.id = id; } public QName getName() { return name; } public Object getBaseValue() { return null; } public boolean isCollection() { return false; } public boolean isLeaf() { return true; } public boolean isActual() { return false; } public PropertyPointer getPropertyPointer() { return new NullPropertyPointer(this); } public NodePointer createPath(JXPathContext context, Object value) { if (parent != null) { return parent.createPath(context, value).getValuePointer(); } throw new UnsupportedOperationException( "Cannot create the root object: " + asPath()); } public NodePointer createPath(JXPathContext context) { if (parent != null) { return parent.createPath(context).getValuePointer(); } throw new UnsupportedOperationException( "Cannot create the root object: " + asPath()); } public NodePointer createChild( JXPathContext context, QName name, int index) { return createPath(context).createChild(context, name, index); } public NodePointer createChild( JXPathContext context, QName name, int index, Object value) { return createPath(context).createChild(context, name, index, value); } public int hashCode() { return name == null ? 0 : name.hashCode(); } public boolean equals(Object object) { if (object == this) { return true; } if (!(object instanceof NullPointer)) { return false; } NullPointer other = (NullPointer) object; return name == other.name || name != null && name.equals(other.name); } public String asPath() { if (id != null) { return "id(" + id + ")"; } return parent == null ? "null()" : super.asPath(); } public int getLength() { return 0; } } Other Commons JXPath examples (source code examples)Here is a short list of links related to this Commons JXPath NullPointer.java source code file: |
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