/**
* Copyright 2010 JBoss Inc
*
* 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.drools.verifier.builder;
import java.io.Reader;
import java.io.StringReader;
import org.drools.builder.ResourceConfiguration;
import org.drools.builder.ResourceType;
import org.drools.compiler.BusinessRuleProvider;
import org.drools.compiler.BusinessRuleProviderFactory;
import org.drools.compiler.DrlParser;
import org.drools.compiler.DroolsParserException;
import org.drools.compiler.PackageBuilder;
import org.drools.compiler.PackageBuilderConfiguration;
import org.drools.compiler.PackageBuilderErrors;
import org.drools.ide.common.BusinessRuleProviderDefaultImpl;
import org.drools.io.Resource;
import org.drools.lang.descr.PackageDescr;
import org.drools.lang.dsl.DefaultExpander;
/**
* Wraps the PackageBuilder for Verifier.
* Used to build PackageDescrs.
*
* @author rikkola
*
*/
class VerifierPackageBuilder {
private InnerBuilder innerBuilder = new InnerBuilder();
private PackageDescr packageDescr;
public void addKnowledgeResource(Resource resource,
ResourceType type,
ResourceConfiguration configuration) {
innerBuilder.addKnowledgeResource( resource,
type,
configuration );
}
public PackageDescr getPackageDescr() {
return packageDescr;
}
public boolean hasErrors() {
return innerBuilder.hasErrors();
}
public PackageBuilderErrors getErrors() {
return innerBuilder.getErrors();
}
class InnerBuilder extends PackageBuilder {
public InnerBuilder() {
super( new PackageBuilderConfiguration() );
}
@Override
public void addPackage(PackageDescr pDescr) {
packageDescr = pDescr;
}
public void addPackageFromBrl(final Resource resource) throws DroolsParserException {
try {
BusinessRuleProvider provider = new BusinessRuleProviderDefaultImpl();
Reader knowledge = provider.getKnowledgeReader( resource );
DrlParser parser = new DrlParser();
DefaultExpander expander = getDslExpander();
if ( null != expander ) {
knowledge = new StringReader( expander.expand( knowledge ) );
if ( expander.hasErrors() ) {
getErrors().addAll( expander.getErrors() );
}
}
PackageDescr pkg = parser.parse( knowledge );
if ( parser.hasErrors() ) {
getErrors().addAll( parser.getErrors() );
} else {
addPackage( pkg );
}
} catch ( Exception e ) {
throw new DroolsParserException( e );
}
}
}
}