/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.drools.template;
import org.drools.template.objects.ObjectDataProvider;
import org.drools.template.parser.DefaultTemplateContainer;
import org.drools.template.parser.TemplateContainer;
import org.drools.template.parser.TemplateDataListener;
import java.io.InputStream;
import java.util.Collection;
/**
* This class provides additional methods for invoking the template
* compiler, taking the actual parameters from maps or objects.
*/
public class ObjectDataCompiler extends DataProviderCompiler {
/**
* Compile templates, substituting from a collection of maps or objects
* into the given template.
*
* @param objs the collection of maps or objects
* @param template the template resource pathname
* @return the expanded rules as a string
*/
public String compile(final Collection<?> objs, final String template) {
final InputStream templateStream = this.getClass().getResourceAsStream(template);
return compile(objs, templateStream);
}
/**
* Compile templates, substituting from a collection of maps or objects
* into the given template.
*
* @param objs objs the collection of maps or objects
* @param templateStream the template as a stream
* @return the expanded rules as a string
*/
public String compile(final Collection<?> objs,
final InputStream templateStream) {
TemplateContainer tc = new DefaultTemplateContainer(templateStream);
closeStream(templateStream);
return compile(new ObjectDataProvider(tc, objs),
new TemplateDataListener(tc));
}
}