/*
* 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.ivy.core.module.descriptor;
import org.apache.ivy.core.module.id.ModuleRevisionId;
/**
* DependencyDescriptorMediator used to override some dependency descriptors values, such as the
* branch or version of the dependency.
*/
public class OverrideDependencyDescriptorMediator implements DependencyDescriptorMediator {
private String version;
private String branch;
/**
* Constructs a new instance.
*
* @param branch
* the branch to give to mediated dependency descriptors, <code>null</code> to keep
* the original branch.
* @param version
* the version to give to mediated dependency descriptors, <code>null</code> to keep
* the original one.
*/
public OverrideDependencyDescriptorMediator(String branch, String version) {
this.branch = branch;
this.version = version;
}
/**
* Returns the version this mediator will give to mediated descriptors, or <code>null</code> if
* this mediator does not override version.
*
* @return the version this mediator will give to mediated descriptors.
*/
public String getVersion() {
return version;
}
/**
* Returns the branch this mediator will give to mediated descriptors, or <code>null</code> if
* this mediator does not override branch.
*
* @return the branch this mediator will give to mediated descriptors.
*/
public String getBranch() {
return branch;
}
public DependencyDescriptor mediate(DependencyDescriptor dd) {
ModuleRevisionId mrid = dd.getDependencyRevisionId();
if ((version == null || version.equals(mrid.getRevision()))
&& (branch == null || branch.equals(mrid.getBranch()))) {
return dd;
}
String version = this.version == null ? mrid.getRevision() : this.version;
String branch = this.branch == null ? mrid.getBranch() : this.branch;
// if this is a noop, do not construct any new object
if (version.equals(dd.getDependencyRevisionId().getRevision())
&& branch.equals(dd.getDependencyRevisionId().getBranch())) {
return dd;
}
return dd.clone(ModuleRevisionId.newInstance(mrid.getOrganisation(), mrid.getName(),
branch, version, mrid.getQualifiedExtraAttributes()));
}
}