io.camunda.zeebe.model.bpmn.builder.AbstractBpmnModelElementBuilder Maven / Gradle / Ivy

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/*
 * Copyright © 2017 camunda services GmbH ([email protected])
 *
 * 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 io.camunda.zeebe.model.bpmn.builder;

import io.camunda.zeebe.model.bpmn.BpmnModelException;
import io.camunda.zeebe.model.bpmn.BpmnModelInstance;
import io.camunda.zeebe.model.bpmn.instance.BpmnModelElementInstance;
import io.camunda.zeebe.model.bpmn.instance.Documentation;
import io.camunda.zeebe.model.bpmn.instance.EndEvent;
import io.camunda.zeebe.model.bpmn.instance.IntermediateThrowEvent;
import io.camunda.zeebe.model.bpmn.instance.SubProcess;
import io.camunda.zeebe.model.bpmn.instance.Transaction;
import org.camunda.bpm.model.xml.instance.ModelElementInstance;

/**
 * @author Sebastian Menski
 */
public abstract class AbstractBpmnModelElementBuilder<
    B extends AbstractBpmnModelElementBuilder, E extends BpmnModelElementInstance> {

  protected final BpmnModelInstance modelInstance;
  protected final E element;
  protected final B myself;

  @SuppressWarnings("unchecked")
  protected AbstractBpmnModelElementBuilder(
      final BpmnModelInstance modelInstance, final E element, final Class selfType) {
    this.modelInstance = modelInstance;
    myself = (B) selfType.cast(this);
    this.element = element;
  }

  /**
   * Finishes the process building.
   *
   * @return the model instance with the build process
   */
  public BpmnModelInstance done() {
    return modelInstance;
  }

  /**
   * Finishes the building of an embedded sub-process.
   *
   * @return the parent sub-process builder
   * @throws BpmnModelException if no parent sub-process can be found
   */
  public SubProcessBuilder subProcessDone() {
    final BpmnModelElementInstance lastSubProcess = element.getScope();
    if (lastSubProcess != null && lastSubProcess instanceof SubProcess) {
      return ((SubProcess) lastSubProcess).builder();
    } else {
      throw new BpmnModelException("Unable to find a parent subProcess.");
    }
  }

  public TransactionBuilder transactionDone() {
    final BpmnModelElementInstance lastTransaction = element.getScope();
    if (lastTransaction != null && lastTransaction instanceof Transaction) {
      return new TransactionBuilder(modelInstance, (Transaction) lastTransaction);
    } else {
      throw new BpmnModelException("Unable to find a parent transaction.");
    }
  }

  public AbstractThrowEventBuilder throwEventDefinitionDone() {
    final ModelElementInstance lastEvent =
        element.getDomElement().getParentElement().getModelElementInstance();
    if (lastEvent != null && lastEvent instanceof IntermediateThrowEvent) {
      return new IntermediateThrowEventBuilder(modelInstance, (IntermediateThrowEvent) lastEvent);
    } else if (lastEvent != null && lastEvent instanceof EndEvent) {
      return new EndEventBuilder(modelInstance, (EndEvent) lastEvent);
    } else {
      throw new BpmnModelException("Unable to find a parent event.");
    }
  }

  public E getElement() {
    return element;
  }

  public AbstractBpmnModelElementBuilder documentation(final String content) {
    final Documentation documentation = modelInstance.newInstance(Documentation.class);
    documentation.setTextContent(content);
    element.addChildElement(documentation);
    return this;
  }
}