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/*
* 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 org.apache.tuscany.sca.core.databinding.transformers;
import java.lang.reflect.Array;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
import org.apache.tuscany.sca.databinding.Mediator;
import org.apache.tuscany.sca.databinding.PullTransformer;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.TransformationException;
import org.apache.tuscany.sca.databinding.BaseTransformer;
import org.apache.tuscany.sca.interfacedef.DataType;
/**
* This is a special transformer to transform the output from one IDL to the
* other one
*
* @version $Rev$ $Date$
*/
public class Array2ArrayTransformer extends BaseTransformer<Object, Object> implements PullTransformer<Object, Object> {
protected Mediator mediator;
public Array2ArrayTransformer(ExtensionPointRegistry registry) {
super();
this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
}
@Override
public String getSourceDataBinding() {
return "java:array";
}
@Override
public String getTargetDataBinding() {
return "java:array";
}
/**
* @see org.apache.tuscany.sca.databinding.BaseTransformer#getSourceType()
*/
@Override
protected Class<Object> getSourceType() {
return Object.class;
}
/**
* @see org.apache.tuscany.sca.databinding.BaseTransformer#getTargetType()
*/
@Override
protected Class<Object> getTargetType() {
return Object.class;
}
/**
* @see org.apache.tuscany.sca.databinding.Transformer#getWeight()
*/
@Override
public int getWeight() {
return 10;
}
@SuppressWarnings("unchecked")
public Object transform(Object array, TransformationContext context) {
try {
if (array == null) {
return null;
}
DataType<DataType> sourceType = context.getSourceDataType();
DataType<DataType> targetType = context.getTargetDataType();
int length = Array.getLength(array);
Object targetArray = Array.newInstance(targetType.getPhysical().getComponentType(), length);
for (int i = 0; i < length; i++) {
Object sourceItem = Array.get(array, i);
Object targetItem =
mediator.mediate(sourceItem, sourceType.getLogical(), targetType.getLogical(), context
.getMetadata());
Array.set(targetArray, i, targetItem);
}
return targetArray;
} catch (Exception e) {
throw new TransformationException(e);
}
}
}
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