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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.model.policymodel.handling;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbums;
import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
/**
* This class makes the albums field optional in marshaled Policy Models.
* Empty albums are not marshaled to JSON/XML.
* When unmarshaled, if no albums value is present then a new empty albums entry is created.
*
* @author John Keeney (john.keeney@ericsson.com)
*/
public class EmptyAlbumsAdapter extends XmlAdapter<AxContextAlbums, AxContextAlbums> {
/**
* Decide whether to marshall a context albums entry. Non-empty context albums are always marshalled.
* Empty albums are filtered.
*
* @param albums the albums entry
* @return the albums entry, or null if empty
* @throws Exception if there is a problem with the marshalling
* @see javax.xml.bind.annotation.adapters.XmlAdapter#marshal(Object)
*/
@Override
public AxContextAlbums marshal(AxContextAlbums albums) throws Exception {
if ((albums == null) || (albums.getAlbumsMap() == null) || (albums.getAlbumsMap().isEmpty())) {
return null;
} else {
return albums;
}
}
/**
* Decide whether to unmarshall a context albums entry - Always.
*
* @param val the albums entry
* @return the albums entry
* @throws Exception if there is a problem with the unmarshalling
* @see javax.xml.bind.annotation.adapters.XmlAdapter#unmarshal(Object)
*/
@Override
public AxContextAlbums unmarshal(AxContextAlbums val) throws Exception {
return val;
}
/**
* After unmarshalling has completed the model's context albums entry may be null/empty or default.
* If so the key for the albums entry should updated to a sensible value and additional keyinfo
* information should then be added for that key
*
* @param policyModel the policy model containing the possibly empty context albums entry
* @see javax.xml.bind.annotation.adapters.XmlAdapter#unmarshal(Object)
*/
public void doAfterUnmarshal(AxPolicyModel policyModel) {
AxArtifactKey nullkey = new AxArtifactKey();
AxArtifactKey blanknullalbumskey =
new AxArtifactKey(nullkey.getKey().getName() + "_Albums", nullkey.getKey().getVersion());
AxArtifactKey thisalbumskey = policyModel.getAlbums().getKey();
AxArtifactKey thismodelkey = policyModel.getKey();
AxContextAlbums thismodelalbums = policyModel.getAlbums();
if (nullkey.equals(thisalbumskey) || blanknullalbumskey.equals(thisalbumskey)) {
thismodelalbums.setKey(new AxArtifactKey(thismodelkey.getName() + "_Albums", thismodelkey.getVersion()));
policyModel.getKeyInformation().generateKeyInfo(thismodelalbums);
}
}
}
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