org.jbpm.assembler.AbstractProcessAssembler Maven / Gradle / Ivy
/*
* Copyright 2018 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.
* 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.jbpm.assembler;
import java.util.List;
import org.drools.compiler.builder.impl.KnowledgeBuilderImpl;
import org.drools.compiler.compiler.BaseKnowledgeBuilderResultImpl;
import org.drools.compiler.compiler.PackageRegistry;
import org.drools.compiler.compiler.ProcessLoadError;
import org.drools.core.impl.InternalKnowledgeBase;
import org.jbpm.compiler.ProcessBuilderImpl;
import org.kie.api.definition.process.Process;
import org.kie.api.internal.assembler.KieAssemblerService;
import org.kie.api.io.Resource;
import org.kie.api.io.ResourceConfiguration;
import org.kie.api.io.ResourceType;
import org.kie.internal.builder.KnowledgeBuilderResult;
public abstract class AbstractProcessAssembler implements KieAssemblerService {
public void addResourceAfterRules(
Object kbuilder,
Resource resource,
ResourceType type,
ResourceConfiguration configuration) {
KnowledgeBuilderImpl kb = (KnowledgeBuilderImpl) kbuilder;
ProcessBuilderImpl processBuilder = (ProcessBuilderImpl) kb.getProcessBuilder();
configurePackageBuilder(kb);
try {
List processes = processBuilder.addProcessFromXml(resource);
List errors = processBuilder.getErrors();
if (errors.isEmpty()) {
InternalKnowledgeBase kBase = kb.getKnowledgeBase();
if (kBase != null && processes != null) {
for (Process process : processes) {
kBase.addProcess(process);
}
}
} else {
errors.forEach(kb::addBuilderResult);
errors.clear();
}
} catch (Exception e) {
if (e instanceof RuntimeException) {
throw (RuntimeException) e;
}
kb.addBuilderResult(new ProcessLoadError(resource, "Unable to load process.", e));
}
// propagate dialect errors to process building errors
for (PackageRegistry pkg : kb.getPackageRegistry().values()) {
// addResults() method, contrary to what could be expectations,
// *adds* the result to the *given* list
List es = pkg.getDialectCompiletimeRegistry().addResults(null);
es.forEach(kb::addBuilderResult);
}
}
protected abstract void configurePackageBuilder(KnowledgeBuilderImpl kb);
}