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 /*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat, Inc. and/or its affiliates, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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.hibernate.validator.internal.util.scriptengine;
A wrapper around JSR 223 javax.script.ScriptEngines. This class is thread-safe.

Author(s):
Gunnar Morling
Kevin Pollet <kevin.pollet@serli.com> (C) 2011 SERLI
public class ScriptEvaluator {
	private final ScriptEngine engine;

Creates a new script executor.

Parameters:
engine The engine to be wrapped.
	public ScriptEvaluator(ScriptEngine engine) {
		this. = engine;
	}

Makes the given object available in then engine-scoped script context and executes the given script. The execution of the script happens either synchronized or unsynchronized, depending on the engine's threading abilities.

Parameters:
script The script to be executed.
obj The object to be put into the context.
objectAlias The name under which the given object shall be put into the context.
Returns:
The script's result.
Throws:
javax.script.ScriptException In case of any errors during script execution.
	public Object evaluate(String scriptObject objString objectAliasthrows ScriptException {
			return doEvaluatescriptobjobjectAlias );
		}
		else {
			synchronized (  ) {
				return doEvaluatescriptobjobjectAlias );
			}
		}
	}
	private Object doEvaluate(String scriptObject objString objectAliasthrows ScriptException {
		.putobjectAliasobj );
		return .evalscript );
	}

Checks, whether the given engine is thread-safe or not.

Returns:
True, if the given engine is thread-safe, false otherwise.
		String threadingType = (String.getFactory().getParameter"THREADING" );
		return "THREAD-ISOLATED".equalsthreadingType ) || "STATELESS".equalsthreadingType );
	}
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