/* * Copyright 2006-2013 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 * * https://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;import java.util.LinkedHashMap;import java.util.Map;import java.util.Properties;/** * Value object representing runtime parameters to a batch job. Because the * parameters have no individual meaning outside of the JobParameters they are * contained within, it is a value object rather than an entity. It is also * extremely important that a parameters object can be reliably compared to * another for equality, in order to determine if one JobParameters object * equals another. Furthermore, because these parameters will need to be * persisted, it is vital that the types added are restricted. *  * This class is immutable and therefore thread-safe. *  * @author Lucas Ward * @author Michael Minella * @since 1.0 */@SuppressWarnings("serial")public class JobParameters implements Serializable { private final Map<String,JobParameter> parameters; public JobParameters() { this.parameters = new LinkedHashMap<String, JobParameter>(); } public JobParameters(Map<String,JobParameter> parameters) { this.parameters = new LinkedHashMap<String,JobParameter>(parameters); } /** * Typesafe Getter for the Long represented by the provided key. *  * @param key The key to get a value for * @return The <code>Long</code> value */ public Long getLong(String key){ if (!parameters.containsKey(key)) { return 0L; } Object value = parameters.get(key).getValue(); return value==null ? 0L : ((Long)value).longValue(); } /** * Typesafe Getter for the Long represented by the provided key. If the * key does not exist, the default value will be returned. *  * @param key to return the value for * @param defaultValue to return if the value doesn't exist * @return the parameter represented by the provided key, defaultValue * otherwise. */ public Long getLong(String key, long defaultValu