/*
* (C) Copyright 2009 Nuxeo SA (http://nuxeo.com/) and others.
*
* 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.
*
* Contributors:
* Anahide Tchertchian
*/
package org.nuxeo.ecm.directory.api.ui;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nuxeo.ecm.core.api.DocumentModelList;
import org.nuxeo.ecm.directory.DirectoryException;
import org.nuxeo.ecm.directory.Session;
import org.nuxeo.ecm.directory.api.DirectoryService;
/**
* Delete constraint preventing from removing an entry from a parent directory if it is referenced in a child directory.
* <p>
* Needs to know the child directory name and the field where parent entry id is declared on it.
*
* @author Anahide Tchertchian
*/
public class HierarchicalDirectoryUIDeleteConstraint extends AbstractDirectoryUIDeleteConstraint {
private static final long serialVersionUID = 1L;
private static final Log log = LogFactory.getLog(HierarchicalDirectoryUIDeleteConstraint.class);
protected String targetDirectory;
protected String targetDirectoryField;
@Override
public void setProperties(Map<String, String> properties) throws DirectoryException {
String targetDirKey = "targetDirectory";
String targetDirFieldKey = "targetDirectoryField";
if (properties == null) {
throw new DirectoryException(String.format("This delete constraint requires properties '%s' and '%s'",
targetDirKey, targetDirFieldKey));
}
if (!properties.containsKey(targetDirKey)) {
throw new DirectoryException(String.format("This delete constraint requires property '%s'", targetDirKey));
}
if (!properties.containsKey(targetDirFieldKey)) {
throw new DirectoryException(String.format("This delete constraint requires property '%s'",
targetDirFieldKey));
}
targetDirectory = properties.get(targetDirKey);
targetDirectoryField = properties.get(targetDirFieldKey);
}
public boolean canDelete(DirectoryService dirService, String entryId) throws DirectoryException {
try (Session dirSession = dirService.open(targetDirectory)) {
// search for given entry id usage in this directory
Map<String, Serializable> filter = new HashMap<String, Serializable>();
filter.put(targetDirectoryField, entryId);
DocumentModelList res = dirSession.query(filter);
if (res.isEmpty()) {
return true;
}
if (log.isDebugEnabled()) {
log.debug("Can not delete " + targetDirectory + " " + entryId + ", constraint on "
+ targetDirectoryField + ":" + res.get(0).getId());
}
return false;
}
}
}