org.springframework.scripting.groovy.GroovyScriptEvaluator Maven / Gradle / Ivy
/*
* Copyright 2002-2015 the original author or authors.
*
* 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.springframework.scripting.groovy;
import java.io.IOException;
import java.util.Map;
import groovy.lang.Binding;
import groovy.lang.GroovyRuntimeException;
import groovy.lang.GroovyShell;
import org.springframework.beans.factory.BeanClassLoaderAware;
import org.springframework.scripting.ScriptCompilationException;
import org.springframework.scripting.ScriptEvaluator;
import org.springframework.scripting.ScriptSource;
import org.springframework.scripting.support.ResourceScriptSource;
/**
* Groovy-based implementation of Spring's {@link ScriptEvaluator} strategy interface.
*
* @author Juergen Hoeller
* @since 4.0
* @see GroovyShell#evaluate(String, String)
*/
public class GroovyScriptEvaluator implements ScriptEvaluator, BeanClassLoaderAware {
private ClassLoader classLoader;
/**
* Construct a new GroovyScriptEvaluator.
*/
public GroovyScriptEvaluator() {
}
/**
* Construct a new GroovyScriptEvaluator.
* @param classLoader the ClassLoader to use as a parent for the {@link GroovyShell}
*/
public GroovyScriptEvaluator(ClassLoader classLoader) {
this.classLoader = classLoader;
}
@Override
public void setBeanClassLoader(ClassLoader classLoader) {
this.classLoader = classLoader;
}
@Override
public Object evaluate(ScriptSource script) {
return evaluate(script, null);
}
@Override
public Object evaluate(ScriptSource script, Map arguments) {
GroovyShell groovyShell = new GroovyShell(this.classLoader, new Binding(arguments));
try {
String filename = (script instanceof ResourceScriptSource ?
((ResourceScriptSource) script).getResource().getFilename() : null);
if (filename != null) {
return groovyShell.evaluate(script.getScriptAsString(), filename);
}
else {
return groovyShell.evaluate(script.getScriptAsString());
}
}
catch (IOException ex) {
throw new ScriptCompilationException(script, "Cannot access Groovy script", ex);
}
catch (GroovyRuntimeException ex) {
throw new ScriptCompilationException(script, ex);
}
}
}