org.camunda.bpm.engine.impl.cmd.GetTaskVariableCmdTyped Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.engine.impl.cmd;
import static org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull;
import java.io.Serializable;
import org.camunda.bpm.engine.impl.cfg.CommandChecker;
import org.camunda.bpm.engine.impl.context.Context;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.impl.persistence.entity.TaskEntity;
import org.camunda.bpm.engine.variable.value.TypedValue;
/**
* @author Daniel Meyer
*/
public class GetTaskVariableCmdTyped implements Command, Serializable {
private static final long serialVersionUID = 1L;
protected String taskId;
protected String variableName;
protected boolean isLocal;
protected boolean deserializeValue;
public GetTaskVariableCmdTyped(String taskId, String variableName, boolean isLocal, boolean deserializeValue) {
this.taskId = taskId;
this.variableName = variableName;
this.isLocal = isLocal;
this.deserializeValue = deserializeValue;
}
public TypedValue execute(CommandContext commandContext) {
ensureNotNull("taskId", taskId);
ensureNotNull("variableName", variableName);
TaskEntity task = Context
.getCommandContext()
.getTaskManager()
.findTaskById(taskId);
ensureNotNull("task " + taskId + " doesn't exist", "task", task);
checkGetTaskVariableTyped(task, commandContext);
TypedValue value;
if (isLocal) {
value = task.getVariableLocalTyped(variableName, deserializeValue);
} else {
value = task.getVariableTyped(variableName, deserializeValue);
}
return value;
}
protected void checkGetTaskVariableTyped(TaskEntity task, CommandContext commandContext) {
for(CommandChecker checker : commandContext.getProcessEngineConfiguration().getCommandCheckers()) {
checker.checkReadTaskVariable(task);
}
}
}