/*
* Copyright 2011 wro4j
*
* 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 ro.isdc.wro.extensions.model.factory;
import groovy.lang.GroovyShell;
import groovy.lang.Script;
import java.io.IOException;
import java.io.InputStreamReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ro.isdc.wro.WroRuntimeException;
import ro.isdc.wro.model.WroModel;
import ro.isdc.wro.model.factory.AbstractWroModelFactory;
import ro.isdc.wro.util.StopWatch;
/**
* Creates {@link ro.isdc.wro.model.WroModel} from a groovy DSL.
* <p/>
* This class is thread-safe because it doesn't have any state.
*
* @author Romain Philibert
* @created 19 Jul 2011
* @since 1.4.0
*/
public class GroovyModelFactory
extends AbstractWroModelFactory {
private static final Logger LOG = LoggerFactory.getLogger(GroovyModelFactory.class);
/**
* Default name of the file used to retrieve the model.
*/
private static final String DEFAULT_FILE_NAME = "wro.groovy";
/**
* Alias for this model factory used by provider.
*/
public static final String ALIAS = "groovy";
/**
* {@inheritDoc}
*/
@Override
public WroModel create() {
final StopWatch stopWatch = new StopWatch("Create Wro Model from Groovy");
final Script script;
try {
stopWatch.start("parseStream");
script = new GroovyShell().parse(new InputStreamReader(getModelResourceAsStream()));
LOG.debug("Parsing groovy script to build the model");
stopWatch.stop();
stopWatch.start("parseScript");
final WroModel model = GroovyModelParser.parse(script);
stopWatch.stop();
LOG.debug("groovy model: {}", model);
if (model == null) {
throw new WroRuntimeException("Invalid content provided, cannot build model!");
}
return model;
} catch (final IOException e) {
throw new WroRuntimeException("Invalid model found!", e);
} finally {
LOG.debug(stopWatch.prettyPrint());
}
}
/**
* {@inheritDoc}
*/
@Override
protected String getDefaultModelFilename() {
return DEFAULT_FILE_NAME;
}
}