org.flowable.engine.impl.cmd.DispatchEventCommand Maven / Gradle / Ivy
/* 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.flowable.engine.impl.cmd;
import org.flowable.common.engine.api.FlowableException;
import org.flowable.common.engine.api.FlowableIllegalArgumentException;
import org.flowable.common.engine.api.delegate.event.FlowableEvent;
import org.flowable.common.engine.api.delegate.event.FlowableEventDispatcher;
import org.flowable.common.engine.impl.interceptor.Command;
import org.flowable.common.engine.impl.interceptor.CommandContext;
import org.flowable.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.flowable.engine.impl.util.CommandContextUtil;
/**
* Command that dispatches an event.
*
* @author Frederik Heremans
*/
public class DispatchEventCommand implements Command {
protected FlowableEvent event;
public DispatchEventCommand(FlowableEvent event) {
this.event = event;
}
@Override
public Void execute(CommandContext commandContext) {
if (event == null) {
throw new FlowableIllegalArgumentException("event is null");
}
ProcessEngineConfigurationImpl processEngineConfiguration = CommandContextUtil.getProcessEngineConfiguration(commandContext);
FlowableEventDispatcher eventDispatcher = processEngineConfiguration.getEventDispatcher();
if (eventDispatcher != null && eventDispatcher.isEnabled()) {
eventDispatcher.dispatchEvent(event, processEngineConfiguration.getEngineCfgKey());
} else {
throw new FlowableException("Message dispatcher is disabled, cannot dispatch event");
}
return null;
}
}