package org.drools.guvnor.server.contenthandler;
/*
* Copyright 2005 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.
*/
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.drools.bpmn2.xml.BPMNSemanticModule;
import org.drools.bpmn2.xml.XmlBPMNProcessDumper;
import org.drools.compiler.DroolsParserException;
import org.drools.compiler.PackageBuilderConfiguration;
import org.drools.compiler.xml.XmlProcessReader;
import org.drools.guvnor.client.rpc.RuleAsset;
import org.drools.guvnor.client.rpc.RuleFlowContentModel;
import org.drools.guvnor.server.builder.BRMSPackageBuilder;
import org.drools.guvnor.server.builder.RuleFlowContentModelBuilder;
import org.drools.guvnor.server.builder.ContentPackageAssembler.ErrorLogger;
import org.drools.repository.AssetItem;
import org.drools.repository.PackageItem;
import org.drools.ruleflow.core.RuleFlowProcess;
import com.google.gwt.user.client.rpc.SerializableException;
public class BPMN2ProcessHandler extends ContentHandler
implements
ICompilable {
public void retrieveAssetContent(RuleAsset asset,
PackageItem pkg,
AssetItem item) throws SerializableException {
RuleFlowProcess process = readProcess( new ByteArrayInputStream( item.getContent().getBytes() ) );
if ( process != null ) {
RuleFlowContentModel content = RuleFlowContentModelBuilder.createModel( process );
content.setXml( item.getContent() );
asset.content = content;
}
}
protected RuleFlowProcess readProcess(InputStream is) {
RuleFlowProcess process = null;
try {
InputStreamReader reader = new InputStreamReader( is );
PackageBuilderConfiguration configuration = new PackageBuilderConfiguration();
configuration.initSemanticModules();
configuration.addSemanticModule( new BPMNSemanticModule() );
XmlProcessReader xmlReader = new XmlProcessReader( configuration.getSemanticModules() );
try {
process = (RuleFlowProcess) xmlReader.read( reader );
} catch ( Exception e ) {
reader.close();
throw new Exception( "Unable to read BPMN2 XML.",
e );
}
reader.close();
} catch ( Exception e ) {
return null;
}
return process;
}
public void storeAssetContent(RuleAsset asset,
AssetItem repoAsset) throws SerializableException {
}
/**
* The rule flow can not be built if the package name is not the same as the
* package that it exists in. This changes the package name.
*
* @param item
*/
public void ruleFlowAttached(AssetItem item) {
String content = item.getContent();
if ( content != null && !content.equals( "" ) ) {
RuleFlowProcess process = readProcess( new ByteArrayInputStream( content.getBytes() ) );
if ( process != null ) {
String packageName = item.getPackageName();
String originalPackageName = process.getPackageName();
if ( !packageName.equals( originalPackageName ) ) {
process.setPackageName( packageName );
XmlBPMNProcessDumper dumper = XmlBPMNProcessDumper.INSTANCE;
String out = dumper.dump( process );
item.updateContent( out );
item.checkin( "Changed BPMN2 process package from " + originalPackageName + " to " + packageName );
}
}
}
}
public void compile(BRMSPackageBuilder builder,
AssetItem asset,
ErrorLogger logger) throws DroolsParserException,
IOException {
InputStream ins = asset.getBinaryContentAttachment();
if ( ins != null ) {
builder.addProcessFromXml( new InputStreamReader( asset.getBinaryContentAttachment() ) );
}
}
}