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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.assembly.builder.impl;
import java.util.List;
import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.assembly.Multiplicity;
import org.apache.tuscany.sca.assembly.OptimizableBinding;
/**
* This class encapsulates utility methods to deal with reference definitions
*
* @version $Rev$ $Date$
*/
abstract class ReferenceConfigurationUtil {
static boolean isValidMultiplicityOverride(Multiplicity definedMul, Multiplicity overridenMul) {
if (definedMul != overridenMul) {
switch (definedMul) {
case ZERO_N:
return overridenMul == Multiplicity.ZERO_ONE;
case ONE_N:
return overridenMul == Multiplicity.ONE_ONE;
default:
return false;
}
} else {
return true;
}
}
static boolean validateMultiplicityAndTargets(Multiplicity multiplicity,
List<?> targets, List<Binding> bindings) {
// Count targets
int count = targets.size();
//FIXME workaround, this validation is sometimes invoked too early
// before we get a chance to init the multiplicity attribute
if (multiplicity == null) {
return true;
}
switch (multiplicity) {
case ZERO_N:
break;
case ZERO_ONE:
if (count > 1) {
return false;
}
break;
case ONE_ONE:
if (count != 1) {
if (count == 0) {
for (Binding binding: bindings) {
if (!(binding instanceof OptimizableBinding) || binding.getURI()!=null) {
return true;
}
}
}
return false;
}
break;
case ONE_N:
if (count < 1) {
if (count == 0) {
for (Binding binding: bindings) {
if (!(binding instanceof OptimizableBinding) || binding.getURI()!=null) {
return true;
}
}
}
return false;
}
break;
}
return true;
}
}
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