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/*
* Copyright 2004 Clinton Begin
*
* 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 com.ibatis.common.beans;
import java.util.List;
import java.util.Map;
import org.ibatis.cglib.*;
import com.ibatis.common.StringTokenizer;
/**
* StaticBeanProbe provides methods that allow simple, reflective access to JavaBeans style properties. Methods are
* provided for all simple types as well as object types.
*
* Examples:
*
* StaticBeanProbe.setObject(object, propertyName, value);
*
* Object value = StaticBeanProbe.getObject(object, propertyName);
*/
public class GenericProbe extends BaseProbe {
private static final BaseProbe BEAN_PROBE = new ComplexBeanProbe();
protected GenericProbe() {
}
/**
* Gets an object from a Map or bean
*
* @param object
* - the object to probe
* @param name
* - the name of the property (or map entry)
* @return The value of the property (or map entry)
* @see com.ibatis.common.beans.BaseProbe#getObject(java.lang.Object, java.lang.String)
*/
@Override
public Object getObject(Object object, String name) {
if (object instanceof Map) {
return BEAN_PROBE.getObject(object, name);
} else if (object instanceof List) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof Object[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof char[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof boolean[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof byte[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof double[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof float[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof int[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof long[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else if (object instanceof short[]) {
return BEAN_PROBE.getIndexedProperty(object, name);
} else {
return BEAN_PROBE.getObject(object, name);
}
}
/**
* Sets an object in a Map or bean
*
* @param object
* - the object to probe
* @param name
* - the name of the property (or map entry)
* @param value
* - the new value of the property (or map entry)
* @see com.ibatis.common.beans.BaseProbe#setObject(java.lang.Object, java.lang.String, java.lang.Object)
*/
@Override
public void setObject(Object object, String name, Object value) {
BEAN_PROBE.setObject(object, name, value);
}
/**
* Returns the class that the setter expects to receive as a parameter when setting a property value.
*
* @param object
* - The class to check
* @param name
* - the name of the property
* @return The type of the property
* @see com.ibatis.common.beans.Probe#getPropertyTypeForSetter(java.lang.Object, java.lang.String)
*/
@Override
public Class getPropertyTypeForSetter(Object object, String name) {
if (object instanceof Class) {
return getClassPropertyTypeForSetter((Class) object, name);
} else {
return BEAN_PROBE.getPropertyTypeForSetter(object, name);
}
}
/**
* Returns the class that the getter will return when reading a property value.
*
* @param object
* The bean to check
* @param name
* The name of the property
* @return The type of the property
* @see com.ibatis.common.beans.Probe#getPropertyTypeForGetter(java.lang.Object, java.lang.String)
*/
@Override
public Class getPropertyTypeForGetter(Object object, String name) {
if (object instanceof Class) {
return getClassPropertyTypeForGetter((Class) object, name);
} else if (name.indexOf('[') >= 0) {
return BEAN_PROBE.getIndexedType(object, name);
} else {
return BEAN_PROBE.getPropertyTypeForGetter(object, name);
}
}
/**
* Checks to see if an object has a writable property by a given name
*
* @param object
* The bean to check
* @param propertyName
* The property to check for
* @return True if the property exists and is writable
* @see com.ibatis.common.beans.Probe#hasWritableProperty(java.lang.Object, java.lang.String)
*/
@Override
public boolean hasWritableProperty(Object object, String propertyName) {
return BEAN_PROBE.hasWritableProperty(object, propertyName);
}
/**
* Checks to see if a bean has a readable property by a given name
*
* @param object
* The bean to check
* @param propertyName
* The property to check for
* @return True if the property exists and is readable
* @see com.ibatis.common.beans.Probe#hasReadableProperty(java.lang.Object, java.lang.String)
*/
@Override
public boolean hasReadableProperty(Object object, String propertyName) {
return BEAN_PROBE.hasReadableProperty(object, propertyName);
}
@Override
protected void setProperty(Object object, String property, Object value) {
BEAN_PROBE.setProperty(object, property, value);
}
@Override
protected Object getProperty(Object object, String property) {
return BEAN_PROBE.getProperty(object, property);
}
private Class getClassPropertyTypeForGetter(Class type, String name) {
if (name.indexOf('.') >= 0) {
StringTokenizer parser = new StringTokenizer(name, '.');
while (parser.hasMoreTokens()) {
name = parser.nextToken();
if (Map.class.isAssignableFrom(type)) {
type = Object.class;
break;
}
type = ClassInfo.getInstance(type).getGetterType(name);
}
} else {
type = ClassInfo.getInstance(type).getGetterType(name);
}
return type;
}
/**
* Returns the class that the setter expects to receive as a parameter when setting a property value.
*
* @param type
* The class to check
* @param name
* The name of the property
* @return The type of the property
*/
private Class getClassPropertyTypeForSetter(Class type, String name) {
if (name.indexOf('.') >= 0) {
StringTokenizer parser = new StringTokenizer(name, '.');
while (parser.hasMoreTokens()) {
name = parser.nextToken();
if (Map.class.isAssignableFrom(type)) {
type = Object.class;
break;
}
type = parser.hasMoreTokens() ? ClassInfo.getInstance(type).getGetterType(name) : ClassInfo
.getInstance(type).getSetterType(name);
}
} else {
type = ClassInfo.getInstance(type).getSetterType(name);
}
return type;
}
}