/*
* 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.JXPathBeanInfo;
import org.apache.commons.jxpath.JXPathIntrospector;
import org.apache.commons.jxpath.ri.QName;
import org.apache.commons.jxpath.ri.model.NodePointer;
/**
* A Pointer that points to a JavaBean or a collection. It is either
* the first element of a path or a pointer for a property value.
* Typically there is a {@link BeanPropertyPointer} between two BeanPointers
* in the chain.
*
* @author Dmitri Plotnikov
* @version $Revision: 670727 $ $Date: 2008-06-23 15:10:38 -0500 (Mon, 23 Jun 2008) $
*/
public class BeanPointer extends PropertyOwnerPointer {
private QName name;
private Object bean;
private JXPathBeanInfo beanInfo;
private static final long serialVersionUID = -8227317938284982440L;
/**
* Create a new BeanPointer.
* @param name is the name given to the first node
* @param bean pointed
* @param beanInfo JXPathBeanInfo
* @param locale Locale
*/
public BeanPointer(QName name, Object bean, JXPathBeanInfo beanInfo,
Locale locale) {
super(null, locale);
this.name = name;
this.bean = bean;
this.beanInfo = beanInfo;
}
/**
* Create a new BeanPointer.
* @param parent pointer
* @param name is the name given to the first node
* @param bean pointed
* @param beanInfo JXPathBeanInfo
*/
public BeanPointer(NodePointer parent, QName name, Object bean,
JXPathBeanInfo beanInfo) {
super(parent);
this.name = name;
this.bean = bean;
this.beanInfo = beanInfo;
}
public PropertyPointer getPropertyPointer() {
return new BeanPropertyPointer(this, beanInfo);
}
public QName getName() {
return name;
}
public Object getBaseValue() {
return bean;
}
/**
* {@inheritDoc}
* @return false
*/
public boolean isCollection() {
return false;
}
/**
* {@inheritDoc}
* @return 1
*/
public int getLength() {
return 1;
}
public boolean isLeaf() {
Object value = getNode();
return value == null
|| JXPathIntrospector.getBeanInfo(value.getClass()).isAtomic();
}
public int hashCode() {
return name == null ? 0 : name.hashCode();
}
public boolean equals(Object object) {
if (object == this) {
return true;
}
if (!(object instanceof BeanPointer)) {
return false;
}
BeanPointer other = (BeanPointer) object;
if (parent != other.parent && (parent == null || !parent.equals(other.parent))) {
return false;
}
if ((name == null && other.name != null)
|| (name != null && !name.equals(other.name))) {
return false;
}
int iThis = (index == WHOLE_COLLECTION ? 0 : index);
int iOther = (other.index == WHOLE_COLLECTION ? 0 : other.index);
if (iThis != iOther) {
return false;
}
if (bean instanceof Number
|| bean instanceof String
|| bean instanceof Boolean) {
return bean.equals(other.bean);
}
return bean == other.bean;
}
/**
* {@inheritDoc}
* If the pointer has a parent, then parent's path.
* If the bean is null, "null()".
* If the bean is a primitive value, the value itself.
* Otherwise - an empty string.
*/
public String asPath() {
if (parent != null) {
return super.asPath();
}
if (bean == null) {
return "null()";
}
if (bean instanceof Number) {
String string = bean.toString();
if (string.endsWith(".0")) {
string = string.substring(0, string.length() - 2);
}
return string;
}
if (bean instanceof Boolean) {
return ((Boolean) bean).booleanValue() ? "true()" : "false()";
}
if (bean instanceof String) {
return "'" + bean + "'";
}
return "/";
}
}
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