001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022
023 package org.granite.util;
024
025 import java.lang.reflect.Method;
026
027 public class PropertyDescriptor {
028
029 private String name;
030 private Method getter;
031 private Method setter;
032
033 public PropertyDescriptor(String propertyName, Method getter, Method setter) {
034 this.name = propertyName;
035 setReadMethod(getter);
036 setWriteMethod(setter);
037 }
038
039 public String getName() {
040 return this.name;
041 }
042
043 public void setWriteMethod(Method setter) {
044 this.setter = setter;
045 }
046
047 public void setReadMethod(Method getter) {
048 this.getter = getter;
049 }
050
051 public Method getWriteMethod() {
052 return setter;
053 }
054
055 public Method getReadMethod() {
056 return getter;
057 }
058
059 @Override
060 public boolean equals(Object object) {
061 if (!(object instanceof PropertyDescriptor))
062 return false;
063
064 PropertyDescriptor pd = (PropertyDescriptor)object;
065 if (!((this.getter == null && pd.getter == null)
066 || (this.getter != null && this.getter.equals(pd.getter))))
067 return false;
068
069 if (!((this.setter == null && pd.setter == null)
070 || (this.setter != null && this.setter.equals(pd.setter))))
071 return false;
072
073 return this.getPropertyType() == pd.getPropertyType();
074 }
075
076 @Override
077 public int hashCode() {
078 int hashCode = getter != null ? getter.hashCode() : 0;
079 if (setter != null)
080 hashCode = hashCode*31 + setter.hashCode();
081 if (getPropertyType() != null)
082 hashCode = hashCode*31 + getPropertyType().hashCode();
083 return hashCode;
084 }
085
086 public Class<?> getPropertyType() {
087 if (getter != null)
088 return getter.getReturnType();
089 if (setter != null) {
090 Class<?>[] parameterTypes = setter.getParameterTypes();
091 return parameterTypes[0];
092 }
093 return null;
094 }
095 }