org.camunda.bpm.engine.impl.Condition Maven / Gradle / Ivy
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* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.engine.impl;
import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.VariableScope;
/**
* @author Tom Baeyens
* @author Christopher Zell
*/
public interface Condition {
/**
* Evaluates the condition and returns the result.
* The scope will be the same as the execution.
*
* @param execution the execution which is used to evaluate the condition
* @return the result
*/
boolean evaluate(DelegateExecution execution);
/**
* Evaluates the condition and returns the result.
*
* @param scope the variable scope which can differ of the execution
* @param execution the execution which is used to evaluate the condition
* @return the result
*/
boolean evaluate(VariableScope scope, DelegateExecution execution);
/**
* Tries to evaluate the condition. If the property which is used in the condition does not exist
* false will be returned.
*
* @param scope the variable scope which can differ of the execution
* @param execution the execution which is used to evaluate the condition
* @return the result
*/
boolean tryEvaluate(VariableScope scope, DelegateExecution execution);
}