/*
* #!
* Ontopia Engine
* #-
* 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.utils.deciders;
import net.ontopia.utils.DeciderIF;
import net.ontopia.topicmaps.core.TopicIF;
import net.ontopia.topicmaps.core.VariantNameIF;
import net.ontopia.topicmaps.core.TopicNameIF;
import net.ontopia.topicmaps.core.TypedIF;
import java.util.Iterator;
/**
* INTERNAL: Decider that allows the user to filter out chosen objects
* used for testing the filtering of exporters.
*/
public class TMDecider implements DeciderIF<Object> {
public TMDecider() {
}
public boolean ok(Object object) {
// a topic can be disallowed by being named "Disallowed Topic"
// a typed object can be disallowed by being typed with a topic named
// "Disallowed Type", but the typing topic itself will be accepted
if (object instanceof TopicIF)
return !isTopicName((TopicIF) object, "Disallowed Topic");
if (object instanceof TypedIF) {
TypedIF typed = (TypedIF) object;
boolean filtered = typed == null ||
!isTopicName(typed.getType(), "Disallowed Type");
if (!filtered)
return false;
}
if (object instanceof VariantNameIF)
return !((VariantNameIF) object).getValue().equals("Disallowed Variant");
if (object instanceof TopicNameIF)
return !((TopicNameIF) object).getValue().equals("Disallowed Name");
return true;
}
private static boolean isTopicName(TopicIF topic, String value) {
String v = getTopicName(topic);
return v != null && v.equals(value);
}
private static String getTopicName(TopicIF topic) {
if (topic == null)
return null;
Iterator<TopicNameIF> it = topic.getTopicNames().iterator();
if (it.hasNext()) {
TopicNameIF name = it.next();
return name.getValue();
}
return null;
}
}