/*
* Copyright 2002-2005 the original author or authors.
*
* 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 net.sf.sojo.core.reflect;
import java.lang.reflect.Field;
import java.util.Collections;
import java.util.Map;
import java.util.TreeMap;
import net.sf.sojo.util.Util;
/**
* Find all fields of the search classes (go upward in the class hierachy, how to the <code>java.lang.Object</code>).
*
* @author linke
*
*/
public final class ReflectionFieldHelper {
private static final ClassPropertiesCache classFieldCache = new ClassPropertiesCache();
public static Field[] getAllFieldsByClass (Class pvClass) {
Map lvFieldMap = getAllFieldMapsByClassIntern(pvClass, null);
return (Field[]) lvFieldMap.values().toArray(new Field [lvFieldMap.size()]);
}
public static Map getAllGetFieldMapsByClass (Class pvClass, String pvFilter[]) {
Map lvFieldMap = new TreeMap(getAllFieldMapsByClassIntern (pvClass, pvFilter));
lvFieldMap.put(Util.getKeyWordClass(), pvClass.getName());
return Collections.unmodifiableMap(lvFieldMap);
}
public static Map getAllSetFieldMapsByClass (Class pvClass, String pvFilter[]) {
Map lvFieldMap = getAllFieldMapsByClassIntern (pvClass, pvFilter);
return Collections.unmodifiableMap(lvFieldMap);
}
private static Map getAllFieldMapsByClassIntern (Class pvClass, String pvFilter[]) {
Map lvFieldMap = classFieldCache.getClassPropertiesMapByClass(pvClass);
if (lvFieldMap == null) {
lvFieldMap = getAllFieldsByClassIntern(pvClass, new TreeMap());
}
lvFieldMap = Util.filterMapByKeys(lvFieldMap, pvFilter);
return lvFieldMap;
}
public static void addAllFields2MapByClass (Class pvClass, String pvFilter[]) {
if (classFieldCache.containsClass(pvClass) == false) {
Map lvFieldMap = getAllSetFieldMapsByClass(pvClass, pvFilter);
classFieldCache.addClassPropertiesMap(pvClass, lvFieldMap);
}
}
public static void removePropertiesByClass (Class pvClass) {
classFieldCache.removePropertiesByClass(pvClass);
}
public static boolean containsClass(Class pvClass) {
return classFieldCache.containsClass(pvClass);
}
/**
* Recursive search alle method from the Class in the Class Hierarchy to Object.class.
* @param pvClass Search class.
* @param pvFieldsMap Method map (key=property name, value=method).
* @return All finded fields.
*/
private static Map getAllFieldsByClassIntern (Class pvClass, Map pvFieldsMap) {
putAllFieldsIntern( pvClass.getFields(), pvFieldsMap) ;
putAllFieldsIntern( pvClass.getDeclaredFields(), pvFieldsMap);
if (!(pvClass.getSuperclass().equals(Object.class))) {
getAllFieldsByClassIntern(pvClass.getSuperclass(), pvFieldsMap);
}
return pvFieldsMap;
}
private static void putAllFieldsIntern (Field pvAllFields[], Map pvFieldsMap) {
for (int i = 0; i < pvAllFields.length; i++) {
pvFieldsMap.put(pvAllFields[i].getName(), pvAllFields[i]);
}
}
}
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