processexecutionengine.java

开发owl的API,提供了W3C规定标准接口,是目前比较少的API.

// The MIT License
//
// Copyright (c) 2004 Evren Sirin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.

/*
 * Created on Jun 27, 2003
 */
package org.mindswap.owls.process.execution;

import java.util.EventListener;

import org.mindswap.owls.process.Process;
import org.mindswap.owls.process.ValueMap;

/**
 * @author Evren Sirin
 * 
 */
public interface ProcessExecutionEngine extends EventListener {
	public void addExecutionListener(ProcessExecutionListener listener);
	
	/**
	 * Execute the given process with no value bindings for input parameters. Process is 
	 * assumed to have no input parameters or all the value bindings were already specified 
	 * in the defaultValues 
	 * 
	 * @param p Process to be executed
	 * @return Value bindings for the output parameters after the execution. Returns null if
	 * execution is not successful
	 */
	public ValueMap execute(Process p) throws Exception;
	
	
	/**
	 * Execute the given OWL-S process with the given input value bindings. If a value is not
	 * specified for a parameter in the valueMap then the default values of the process is
	 * searched.
	 * 
	 * @param p Process to be executed
	 * @param map Value bindings for the input parameters
	 * @return Value bindings for the output parameters after the execution. Returns null if
	 * execution is not successful
	 */
	public ValueMap execute(Process p, ValueMap map) throws Exception;
}