org.springframework.batch.core.JobParameter Maven / Gradle / Ivy
/*
* Copyright 2006-2007 the original author or authors.
*
* 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.springframework.batch.core;
import java.io.Serializable;
import java.util.Date;
/**
* Domain representation of a parameter to a batch job. Only the following types
* can be parameters: String, Long, Date, and Double.
*
* @author Lucas Ward
* @since 2.0
*
*/
public class JobParameter implements Serializable {
private final Object parameter;
private final ParameterType parameterType;
/**
* Construct a new JobParameter as a String.
*/
public JobParameter(String parameter) {
this.parameter = parameter;
parameterType = ParameterType.STRING;
}
/**
* Construct a new JobParameter as a Long.
*
* @param parameter
*/
public JobParameter(Long parameter) {
this.parameter = parameter;
parameterType = ParameterType.LONG;
}
/**
* Construct a new JobParameter as a Date.
*
* @param parameter
*/
public JobParameter(Date parameter) {
this.parameter = new Date(parameter.getTime());
parameterType = ParameterType.DATE;
}
/**
* Construct a new JobParameter as a Double.
*
* @param parameter
*/
public JobParameter(Double parameter) {
this.parameter = parameter;
parameterType = ParameterType.DOUBLE;
}
/**
* @return the value contained within this JobParameter.
*/
public Object getValue() {
if (parameter.getClass().isInstance(Date.class)) {
return new Date(((Date) parameter).getTime());
}
else {
return parameter;
}
}
/**
* @return a ParameterType representing the type of this parameter.
*/
public ParameterType getType() {
return parameterType;
}
@Override
public boolean equals(Object obj) {
if (obj instanceof JobParameter == false) {
return false;
}
if (this == obj) {
return true;
}
JobParameter rhs = (JobParameter) obj;
return this.parameter.equals(rhs.parameter);
}
@Override
public String toString() {
return parameterType == ParameterType.DATE ? "" + ((Date) parameter).getTime() : parameter.toString();
}
public int hashCode() {
return 7 + 21 * parameter.hashCode();
}
/**
* Enumeration representing the type of a JobParameter.
*/
public enum ParameterType {
STRING, DATE, LONG, DOUBLE;
}
}