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/* 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.activiti.engine.impl.runtime;

import java.util.HashMap;
import java.util.Map;

import org.activiti.engine.ActivitiIllegalArgumentException;
import org.activiti.engine.impl.RuntimeServiceImpl;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.runtime.ProcessInstanceBuilder;

/**
 * @author Bassam Al-Sarori
 * 
 */
public class ProcessInstanceBuilderImpl implements ProcessInstanceBuilder {

  protected RuntimeServiceImpl runtimeService;

  protected String processDefinitionId;
  protected String processDefinitionKey;
  protected String processInstanceName;
  protected String businessKey;
  protected String tenantId;
  protected Map variables = new HashMap();

  public ProcessInstanceBuilderImpl(RuntimeServiceImpl runtimeService) {
    this.runtimeService = runtimeService;
  }

  public ProcessInstanceBuilder processDefinitionId(String processDefinitionId) {
    this.processDefinitionId = processDefinitionId;
    return this;
  }

  public ProcessInstanceBuilder processDefinitionKey(String processDefinitionKey) {
    this.processDefinitionKey = processDefinitionKey;
    return this;
  }

  public ProcessInstanceBuilder processInstanceName(String processInstanceName) {
    this.processInstanceName = processInstanceName;
    return this;
  }

  public ProcessInstanceBuilder businessKey(String businessKey) {
    this.businessKey = businessKey;
    return this;
  }

  public ProcessInstanceBuilder tenantId(String tenantId) {
    this.tenantId = tenantId;
    return this;
  }

  public ProcessInstanceBuilder addVariable(String variableName, Object value) {
    this.variables.put(variableName, value);
    return this;
  }

  public ProcessInstance start() {
    if (processDefinitionId == null && processDefinitionKey == null) {
      throw new ActivitiIllegalArgumentException("processDefinitionKey and processDefinitionId are null");
    }
    return runtimeService.startProcessInstance(this);
  }

  public String getProcessDefinitionId() {
    return processDefinitionId;
  }

  public String getProcessDefinitionKey() {
    return processDefinitionKey;
  }

  public String getProcessInstanceName() {
    return processInstanceName;
  }

  public String getBusinessKey() {
    return businessKey;
  }

  public String getTenantId() {
    return tenantId;
  }

  public Map getVariables() {
    return variables;
  }

}