SimulationEvent.java

package org.activiti.crystalball.simulator;

/* 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.
 */


import org.springframework.beans.factory.FactoryBean;

import java.util.Date;
import java.util.Map;

/**
 *
 * @author martin.grofcik
 */
public class SimulationEvent {
	
	/** event type used to notify  AcquireJobsRunnable monitor to continue in execution */
	public static final String TYPE_ACQUIRE_JOB_NOTIFICATION_EVENT = "ACQUIRE_JOB_NOTIFICATION_EVENT";
	
	public static final String TYPE_END_SIMULATION = "END_SIMULATION";
  public static final String TYPE_BREAK_SIMULATION = "BREAK";

  public static final int PRIORITY_SYSTEM = -1;

  private final long simulationTime;
	private final String type;
	private final Map<String, Object> properties;
	private final Object property;
  private final int priority;

	protected SimulationEvent(Builder builder) {
    this.simulationTime = builder.simulationTime;
    this.type = builder.type;
    this.properties = builder.properties;
    this.property = builder.property;
    this.priority = builder.priority;

  }

	public Object getProperty() {
		return property;
	}

	public Object getProperty(String name) {
		return properties.get(name);
	}
	
	public long getSimulationTime() {
		return simulationTime;
	}

	public String getType() {
		return type;
	}

  public int getPriority() {
    return priority;
  }

  @Override
	public String toString() {
    String date = hasSimulationTime() ? (new Date(simulationTime)).toString() + ", " : "now ";
		return  date + type + ", "+priority+", " +property + ", " + properties;
	}

  public Map<String, Object> getProperties() {
    return properties;
  }

  public boolean hasSimulationTime() {
    return this.simulationTime != Long.MIN_VALUE;
  }

  public static class Builder {
    // required
    private long simulationTime;
    private String type;

    // optional
    private Map<String, Object> properties;
    private Object property;
    private int priority;

    public Builder(String type) {
      this.type = type;
      this.simulationTime = Long.MIN_VALUE;
    }

    public Builder simulationTime(long simulationTime) {
      this.simulationTime=simulationTime;
      return this;
    }
    public Builder properties(Map<String, Object> properties) {
      this.properties = properties;
      return this;
    }

    public Builder property(Object property) {
      this.property = property;
      return this;
    }

    public Builder priority(int priority) {
      this.priority = priority;
      return this;
    }

    public SimulationEvent build() {
      return new SimulationEvent(this);
    }
  }

  
  public static class Factory implements FactoryBean<SimulationEvent> {
    private long simulationTime;
    private String type;
    private Map<String, Object> properties;
    private int priority;

    public Factory(String type, long simulationTime, Map<String, Object> properties) {
      this.type = type;
      this.simulationTime = simulationTime;
      this.properties = properties;
    }

    @Override
    public SimulationEvent getObject() throws Exception {
      return new Builder(this.type).
        simulationTime(this.simulationTime).
        properties(this.properties).
        priority(this.priority).
        build();
    }

    @Override
    public Class<?> getObjectType() {
      return SimulationEvent.class;
    }

    @Override
    public boolean isSingleton() {
      return false;
    }
  }

}