001/* 002 * Copyright 2006-2007 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.batch.integration.chunk; 018 019import java.io.Serializable; 020import java.util.Collection; 021 022import org.springframework.batch.core.StepContribution; 023 024/** 025 * Encapsulation of a chunk of items to be processed remotely as part of a step 026 * execution. 027 * 028 * @author Dave Syer 029 * 030 * @param <T> the type of the items to process 031 */ 032public class ChunkRequest<T> implements Serializable { 033 034 private static final long serialVersionUID = 1L; 035 036 private final long jobId; 037 038 private final Collection<? extends T> items; 039 040 private final StepContribution stepContribution; 041 042 private final int sequence; 043 044 public ChunkRequest(int sequence, Collection<? extends T> items, long jobId, StepContribution stepContribution) { 045 this.sequence = sequence; 046 this.items = items; 047 this.jobId = jobId; 048 this.stepContribution = stepContribution; 049 } 050 051 public long getJobId() { 052 return jobId; 053 } 054 055 public Collection<? extends T> getItems() { 056 return items; 057 } 058 059 public int getSequence() { 060 return sequence; 061 } 062 063 /** 064 * @return the {@link StepContribution} for this chunk 065 */ 066 public StepContribution getStepContribution() { 067 return stepContribution; 068 } 069 070 /** 071 * @see java.lang.Object#toString() 072 */ 073 @Override 074 public String toString() { 075 return getClass().getSimpleName() + ": jobId=" + jobId + ", sequence=" + sequence + ", contribution=" 076 + stepContribution + ", item count=" + items.size(); 077 } 078 079}