/*
* #!
* Ontopia Navigator
* #-
* 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.nav2.core;
/**
* INTERNAL: interface for classes which
* implement some calculation on an object
* an come to a binary decision.
* Used by the Deciders in the if and filter tag.
*
* @see net.ontopia.topicmaps.nav2.taglibs.logic.IfTag
* @see net.ontopia.topicmaps.nav2.taglibs.TMvalue.FilterTag
*/
public interface NavigatorDeciderIF<T> {
/**
* INTERNAL: if implemented criteria are matched: deliver true,
* otherwise false.
*/
public boolean ok(NavigatorPageIF contextTag, T obj);
}