/*
* Copyright 2013 Chris Pheby
*
* 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 org.jadira.reflection.cloning.implementor;
import java.lang.reflect.Field;
import java.util.IdentityHashMap;
import org.jadira.reflection.access.api.ClassAccess;
import org.jadira.reflection.access.invokedynamic.InvokeDynamicClassAccess;
import org.jadira.reflection.access.model.ClassModel;
import org.jadira.reflection.access.model.FieldModel;
import org.jadira.reflection.cloning.api.CloneDriver;
import org.jadira.reflection.cloning.api.CloneStrategy;
/**
* A CloneStrategy that uses invokedynamic via DynaLang and ASM
*/
public class InvokeDynamicCloneStrategy extends AbstractCloneStrategy implements CloneStrategy {
private static final char CHAR_NULL = '\u0000';
@Override
public <T> T newInstance(Class<T> c) {
ClassAccess<T> classAccess = InvokeDynamicClassAccess.get(c);
return classAccess.newInstance();
}
private static InvokeDynamicCloneStrategy instance = new InvokeDynamicCloneStrategy();
/**
* Returns a shared instance of InvokeDynamicCloneStrategy
* @return The instance
*/
public static InvokeDynamicCloneStrategy getInstance() {
return instance;
}
@Override
protected <T> void handleTransientField(T copy, FieldModel<T> f) {
Class<?> clazz = f.getField().getType();
try {
if (f.isPrivate()) {
if (clazz.isPrimitive()) {
if (java.lang.Boolean.TYPE == clazz) {
f.getField().setBoolean(copy, false);
} else if (java.lang.Byte.TYPE == clazz) {
f.getField().setByte(copy, (byte) 0);
} else if (java.lang.Character.TYPE == clazz) {
f.getField().setChar(copy, CHAR_NULL);
} else if (java.lang.Short.TYPE == clazz) {
f.getField().setShort(copy, (short) 0);
} else if (java.lang.Integer.TYPE == clazz) {
f.getField().setInt(copy, 0);
} else if (java.lang.Long.TYPE == clazz) {
f.getField().setLong(copy, 0L);
} else if (java.lang.Float.TYPE == clazz) {
f.getField().setFloat(copy, 0.0F);
} else if (java.lang.Double.TYPE == clazz) {
f.getField().setDouble(copy, 0.0D);
}
} else {
f.getField().set(copy, null);
}
} else {
if (clazz.isPrimitive()) {
if (java.lang.Boolean.TYPE == clazz) {
f.getFieldAccess().putBooleanValue(copy, false);
} else if (java.lang.Byte.TYPE == clazz) {
f.getFieldAccess().putByteValue(copy, (byte) 0);
} else if (java.lang.Character.TYPE == clazz) {
f.getFieldAccess().putCharValue(copy, CHAR_NULL);
} else if (java.lang.Short.TYPE == clazz) {
f.getFieldAccess().putShortValue(copy, (short) 0);
} else if (java.lang.Integer.TYPE == clazz) {
f.getFieldAccess().putIntValue(copy, 0);
} else if (java.lang.Long.TYPE == clazz) {
f.getFieldAccess().putLongValue(copy, 0L);
} else if (java.lang.Float.TYPE == clazz) {
f.getFieldAccess().putFloatValue(copy, 0.0F);
} else if (java.lang.Double.TYPE == clazz) {
f.getFieldAccess().putDoubleValue(copy, 0.0D);
}
} else {
f.getFieldAccess().putValue(copy, null);
}
}
} catch (IllegalArgumentException e) {
throw new IllegalStateException("Problem performing clone for field {" + f.getField().getName() + "} of object {" + System.identityHashCode(copy) + "}: " + e.getMessage(), e);
} catch (IllegalAccessException e) {
throw new IllegalStateException("Problem performing clone for field {" + f.getField().getName() + "} of object {" + System.identityHashCode(copy) + "}: " + e.getMessage(), e);
}
}
@Override
protected <W> ClassModel<W> getClassModel(Class<W> clazz) {
return InvokeDynamicClassAccess.get(clazz).getClassModel();
}
@Override
protected <T> void handleClonePrimitiveField(T obj, T copy, CloneDriver driver, FieldModel<T> f, IdentityHashMap<Object, Object> referencesToReuse) {
Field field = f.getField();
try {
Class<?> clazz = f.getFieldClass();
if (f.isPrivate()) {
if (java.lang.Boolean.TYPE == clazz) {
field.setBoolean(copy, field.getBoolean(obj));
} else if (java.lang.Byte.TYPE == clazz) {
field.setByte(copy, field.getByte(obj));
} else if (java.lang.Character.TYPE == clazz) {
field.setChar(copy, field.getChar(obj));
} else if (java.lang.Short.TYPE == clazz) {
field.setShort(copy, field.getShort(obj));
} else if (java.lang.Integer.TYPE == clazz) {
field.setInt(copy, field.getInt(obj));
} else if (java.lang.Long.TYPE == clazz) {
field.setLong(copy, field.getLong(obj));
} else if (java.lang.Float.TYPE == clazz) {
field.setFloat(copy, field.getFloat(obj));
} else if (java.lang.Double.TYPE == clazz) {
field.setDouble(copy, field.getDouble(obj));
} else {
throw new IllegalStateException("Expected primitive but was :" + clazz.getName());
}
} else {
if (java.lang.Boolean.TYPE == clazz) {
f.getFieldAccess().putBooleanValue(copy, field.getBoolean(obj));
} else if (java.lang.Byte.TYPE == clazz) {
f.getFieldAccess().putByteValue(copy, field.getByte(obj));
} else if (java.lang.Character.TYPE == clazz) {
f.getFieldAccess().putCharValue(copy, field.getChar(obj));
} else if (java.lang.Short.TYPE == clazz) {
f.getFieldAccess().putShortValue(copy, field.getShort(obj));
} else if (java.lang.Integer.TYPE == clazz) {
f.getFieldAccess().putIntValue(copy, field.getInt(obj));
} else if (java.lang.Long.TYPE == clazz) {
f.getFieldAccess().putLongValue(copy, field.getLong(obj));
} else if (java.lang.Float.TYPE == clazz) {
f.getFieldAccess().putFloatValue(copy, field.getFloat(obj));
} else if (java.lang.Double.TYPE == clazz) {
f.getFieldAccess().putDoubleValue(copy, field.getDouble(obj));
} else {
throw new IllegalStateException("Expected primitive but was :" + clazz.getName());
}
}
} catch (IllegalArgumentException e) {
throw new IllegalStateException("Problem performing clone for field {" + field.getName() + "} of object {" + System.identityHashCode(obj) + "}: " + e.getMessage(), e);
} catch (IllegalAccessException e) {
throw new IllegalStateException("Problem performing clone for field {" + field.getName() + "} of object {" + System.identityHashCode(obj) + "}: " + e.getMessage(), e);
}
}
@Override
protected <T> Object getFieldValue(T obj, FieldModel<T> f) {
final Field field = f.getField();
final Object fieldObject;
try {
if (f.isPrivate()) {
fieldObject = field.get(obj);
} else {
fieldObject = f.getFieldAccess().getValue(obj);
}
} catch (IllegalArgumentException e) {
throw new IllegalStateException("Problem performing clone for field {" + field.getName() + "} of object {" + System.identityHashCode(obj) + "}: " + e.getMessage(), e);
} catch (IllegalAccessException e) {
throw new IllegalStateException("Problem performing clone for field {" + field.getName() + "} of object {" + System.identityHashCode(obj) + "}: " + e.getMessage(), e);
}
return fieldObject;
}
@Override
protected <T> void putFieldValue(T obj, FieldModel<T> f, Object value) {
final Field field = f.getField();
try {
if (f.isPrivate()) {
f.getField().set(obj, value);
} else {
f.getFieldAccess().putValue(obj, value);
}
} catch (IllegalArgumentException e) {
throw new IllegalStateException("Problem performing clone for field {" + field.getName() + "} of object {" + System.identityHashCode(obj) + "}: " + e.getMessage(), e);
} catch (IllegalAccessException e) {
throw new IllegalStateException("Problem performing clone for field {" + field.getName() + "} of object {" + System.identityHashCode(obj) + "}: " + e.getMessage(), e);
}
}
}