/*
* #!
* Ontopia Webed
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* 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 net.ontopia.topicmaps.webed.impl.actions.occurrence;
import java.util.Collections;
import net.ontopia.topicmaps.core.OccurrenceIF;
import net.ontopia.topicmaps.webed.core.ActionIF;
import net.ontopia.topicmaps.webed.core.ActionParametersIF;
import net.ontopia.topicmaps.webed.core.ActionResponseIF;
import net.ontopia.topicmaps.webed.impl.utils.ActionSignature;
import net.ontopia.topicmaps.webed.impl.actions.tmobject.Delete;
/**
* PUBLIC: Action for setting the value of an internal occurrence. If there
* already exists an occurrence and the supplied value is null, or an empty
* string, then the occurrence is deleted.
*
* @since 3.0
*/
public class SetValue2 implements ActionIF {
private ActionIF setValue = new SetValue();
private ActionIF delete = new Delete();
public void perform(ActionParametersIF params, ActionResponseIF response) {
// test params
ActionSignature paramsType = ActionSignature.getSignature("o t? t?");
paramsType.validateArguments(params, this);
OccurrenceIF occurrence = (OccurrenceIF) params.get(0);
String value = params.getStringValue();
if ((value == null || value.trim().length() == 0) && occurrence != null)
delete.perform(params.cloneAndOverride(Collections
.singletonList(Collections.singletonList(occurrence))), response);
else
setValue.perform(params, response);
}
}