org.ocpsoft.rewrite.config.Condition Maven / Gradle / Ivy

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/*
 * Copyright 2011 Lincoln Baxter, III
 * 
 * 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 org.ocpsoft.rewrite.config;

import org.ocpsoft.rewrite.context.EvaluationContext;
import org.ocpsoft.rewrite.event.Rewrite;

/**
 * A condition that must be met in order for evaluation to return true. You may create custom {@link Condition}
 * implementations. If creating custom implementations, you should likely extend {@link DefaultConditionBuilder}, which
 * adds logical operators to any class extending it.
 * 
 * @author Lincoln Baxter, III
 */
public interface Condition
{
   /**
    * Evaluate this condition against the given {@link org.ocpsoft.rewrite.event.Rewrite} event. If this condition does
    * not apply to the given event, it must return false. If the condition applies and is satisfied, return true.
    */
   boolean evaluate(Rewrite event, EvaluationContext context);
}