/*
* Copyright 2013 Red Hat Inc. and/or its affiliates and other contributors.
*
* 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.switchyard.internal.transform;
import javax.xml.namespace.QName;
import org.junit.Assert;
import org.junit.Test;
import org.switchyard.internal.DefaultMessage;
import org.switchyard.transform.BaseTransformer;
import org.switchyard.transform.TransformSequence;
/**
* @author <a href="mailto:tom.fennelly@gmail.com">tom.fennelly@gmail.com</a>
*/
public class TransformSequenceTest {
@Test
public void test() {
final QName A = new QName("a");
final QName B = new QName("b");
final QName C = new QName("c");
final QName D = new QName("d");
BaseTransformerRegistry xformReg = new BaseTransformerRegistry();
TransformSequence transSequence = TransformSequence.from(A).to(B).to(C).to(D);
DefaultMessage message = new DefaultMessage().setContent(A);
// Apply transform sequence ... no relevant transformers in the reg... nothing should
// happen i.e. content should still be "a"...
transSequence.apply(message, xformReg);
Assert.assertEquals(A, message.getContent());
// Add just th "a" to "b" transformer... run again... should transform to "b", but no further...
xformReg.addTransformer(new MockTransformer(A, B));
transSequence.apply(message, xformReg);
Assert.assertEquals(B, message.getContent());
// Add the rest of the transforms now... should transform the last steps in one go...
xformReg.addTransformer(new MockTransformer(B, C)).addTransformer(new MockTransformer(C, D));
transSequence.apply(message, xformReg);
Assert.assertEquals(D, message.getContent());
}
private class MockTransformer extends BaseTransformer {
private QName from;
private QName to;
private MockTransformer(QName from, QName to) {
super(from, to);
this.from = from;
this.to = to;
}
@Override
public Object transform(Object from) {
Assert.assertEquals(this.from, from);
return to;
}
}
}