lite.beans.UtilCollectionsPersistenceDelegate Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of litebeans Show documentation
Show all versions of litebeans Show documentation
Libraries for Elasticsearch
The newest version!
/*
* 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 lite.beans;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
import lite.beans.util.BeansUtils;
class UtilCollectionsPersistenceDelegate extends PersistenceDelegate {
static String CLASS_PREFIX = "java.util.Collections$"; //$NON-NLS-1$
private static final String COLLECTIONS_TYPE = "type"; //$NON-NLS-1$
private static final String MAP_KEY_TYPE = "keyType"; //$NON-NLS-1$
private static final String MAP_VALUE_TYPE = "valueType"; //$NON-NLS-1$
protected boolean mutatesTo(Object o1, Object o2) {
if (BeansUtils.declaredEquals(o1.getClass())) {
return o1.equals(o2);
}
if (o1 instanceof Collection) {
Collection c1 = (Collection) o1;
Collection c2 = (Collection) o2;
return c1.size() == c2.size() && c1.containsAll(c2);
}
if (o1 instanceof Map) {
Map m1 = (Map) o1;
Map m2 = (Map) o2;
return m1.size() == m2.size()
&& m1.entrySet().containsAll(m2.entrySet());
}
return super.mutatesTo(o1, o2);
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
protected Expression instantiate(Object oldInstance, Encoder enc) {
String className = oldInstance.getClass().getName();
if (className.endsWith("UnmodifiableCollection")) { //$NON-NLS-1$
// Collections.unmodifiableCollection(Collection);
return new Expression(oldInstance, Collections.class,
"unmodifiableCollection", new Object[] { new ArrayList( //$NON-NLS-1$
(Collection) oldInstance) });
} else if (className.endsWith("UnmodifiableList")) { //$NON-NLS-1$
// Collections.unmodifiableList(List);
return new Expression(oldInstance, Collections.class,
"unmodifiableList", new Object[] { new LinkedList(
(Collection) oldInstance) });
} else if (className.endsWith("UnmodifiableRandomAccessList")) { //$NON-NLS-1$
// Collections.unmodifiableList(List);
return new Expression(oldInstance, Collections.class,
"unmodifiableList", new Object[] { new ArrayList( //$NON-NLS-1$
(Collection) oldInstance) });
} else if (className.endsWith("UnmodifiableSet")) { //$NON-NLS-1$
// Collections.unmodifiableSet(Set);
return new Expression(oldInstance, Collections.class,
"unmodifiableSet", new Object[] { new HashSet( //$NON-NLS-1$
(Set) oldInstance) });
} else if (className.endsWith("UnmodifiableSortedSet")) { //$NON-NLS-1$
// Collections.unmodifiableSortedSet(set)
return new Expression(oldInstance, Collections.class,
"unmodifiableSortedSet", new Object[] { new TreeSet( //$NON-NLS-1$
(SortedSet) oldInstance) });
} else if (className.endsWith("UnmodifiableMap")) { //$NON-NLS-1$
return new Expression(oldInstance, Collections.class,
"unmodifiableMap", new Object[] { new HashMap( //$NON-NLS-1$
(Map) oldInstance) });
} else if (className.endsWith("UnmodifiableSortedMap")) { //$NON-NLS-1$
// Collections.unmodifiableSortedMap(SortedMap);
return new Expression(oldInstance, Collections.class,
"unmodifiableSortedMap", new Object[] { new TreeMap( //$NON-NLS-1$
(Map) oldInstance) });
} else if (className.endsWith("SynchronizedCollection")) { //$NON-NLS-1$
// Collections.synchronizedCollection(Collection);
return new Expression(oldInstance, Collections.class,
"synchronizedCollection", new Object[] { new ArrayList( //$NON-NLS-1$
(Collection) oldInstance) });
} else if (className.endsWith("SynchronizedList")) { //$NON-NLS-1$
// Collections.synchronizedList(List);
return new Expression(oldInstance, Collections.class,
"synchronizedList", new Object[] { new LinkedList( //$NON-NLS-1$
(List) oldInstance) });
} else if (className.endsWith("SynchronizedRandomAccessList")) { //$NON-NLS-1$
// Collections.synchronizedList(List);
return new Expression(oldInstance, Collections.class,
"synchronizedList", new Object[] { new ArrayList( //$NON-NLS-1$
(List) oldInstance) });
} else if (className.endsWith("SynchronizedSet")) { //$NON-NLS-1$
// Collections.synchronizedSet(Set);
return new Expression(oldInstance, Collections.class,
"synchronizedSet", new Object[] { new HashSet( //$NON-NLS-1$
(Set) oldInstance) });
} else if (className.endsWith("SynchronizedSortedSet")) { //$NON-NLS-1$
// Collections.synchronizedSortedSet(SortedSet);
return new Expression(oldInstance, Collections.class,
"synchronizedSortedSet", new Object[] { new TreeSet( //$NON-NLS-1$
(SortedSet) oldInstance) });
} else if (className.endsWith("SynchronizedMap")) { //$NON-NLS-1$
// Collections.synchronizedMap(Map);
return new Expression(oldInstance, Collections.class,
"synchronizedMap", new Object[] { new HashMap( //$NON-NLS-1$
(Map) oldInstance) });
} else if (className.endsWith("SynchronizedSortedMap")) { //$NON-NLS-1$
// Collections.synchronizedSortedMap(SortedMap)
return new Expression(oldInstance, Collections.class,
"synchronizedSortedMap", new Object[] { new TreeMap( //$NON-NLS-1$
(SortedMap) oldInstance) });
} else if (className.endsWith("CheckedCollection")) { //$NON-NLS-1$
// Collections.checkedCollection(Collection, Class);
return new Expression(oldInstance, Collections.class,
"checkedCollection", new Object[] { //$NON-NLS-1$
new ArrayList((Collection) oldInstance),
valueOfField(oldInstance, COLLECTIONS_TYPE) });
} else if (className.endsWith("CheckedList")) { //$NON-NLS-1$
// Collections.checkedList(List, Class);
return new Expression(oldInstance, Collections.class,
"checkedList", new Object[] {
new LinkedList((Collection) oldInstance),
valueOfField(oldInstance, COLLECTIONS_TYPE) });
} else if (className.endsWith("CheckedRandomAccessList")) { //$NON-NLS-1$
// Collections.checkedList(List, Class);
return new Expression(oldInstance, Collections.class,
"checkedList", new Object[] { //$NON-NLS-1$
new ArrayList((Collection) oldInstance),
valueOfField(oldInstance, COLLECTIONS_TYPE) });
} else if (className.endsWith("CheckedSet")) { //$NON-NLS-1$
// Collections.checkedSet(Set, Class);
return new Expression(oldInstance, Collections.class, "checkedSet", //$NON-NLS-1$
new Object[] { new HashSet((Set) oldInstance),
valueOfField(oldInstance, COLLECTIONS_TYPE) });
} else if (className.endsWith("CheckedSortedSet")) { //$NON-NLS-1$
// Collections.checkedSortedSet(SortedSet, Class);
return new Expression(oldInstance, Collections.class,
"checkedSortedSet", new Object[] { //$NON-NLS-1$
new TreeSet((Set) oldInstance),
valueOfField(oldInstance, COLLECTIONS_TYPE) });
} else if (className.endsWith("CheckedMap")) { //$NON-NLS-1$
// Collections.checkedMap(Map, keyType, valueType);
return new Expression(oldInstance, Collections.class, "checkedMap", //$NON-NLS-1$
new Object[] { new HashMap((Map) oldInstance),
valueOfField(oldInstance, MAP_KEY_TYPE),
valueOfField(oldInstance, MAP_VALUE_TYPE) });
} else if (className.endsWith("CheckedSortedMap")) { //$NON-NLS-1$
// Collections.checkedSortedMap(SortedMap, keyType, valueType);
return new Expression(oldInstance, Collections.class,
"checkedSortedMap", new Object[] { //$NON-NLS-1$
new TreeMap((Map) oldInstance),
valueOfField(oldInstance, MAP_KEY_TYPE),
valueOfField(oldInstance, MAP_VALUE_TYPE) });
}
return null;
}
private static Object valueOfField(Object obj, String fieldName) {
Class clazz = obj.getClass();
Field field = null;
while (clazz != null) {
for (Field declaredField : clazz.getDeclaredFields()) {
if (fieldName.equals(declaredField.getName())) {
field = declaredField;
break;
}
}
clazz = clazz.getSuperclass();
}
if (field != null) {
if (!field.isAccessible()) {
field.setAccessible(true);
}
try {
return field.get(obj);
} catch (Exception e) {
// Ignored
}
}
return null;
}
}