Java tutorial
/* * Copyright 2014 dmakariev. * * 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 com.makariev.dynamodb.data.populators; import com.amazonaws.services.dynamodbv2.model.AttributeValue; import com.amazonaws.services.dynamodbv2.model.PutItemRequest; import com.makariev.dynamodb.data.DataPopulator; import com.makariev.dynamodb.forum.Reply; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; /** * * @author dmakariev */ public class ReplyPopulator implements DataPopulator { @Override public String getTableName() { return Reply.TABLE_NAME; } @Override public List<PutItemRequest> getPutItemRequests() { final List<PutItemRequest> requests = new ArrayList<>(); final String tableName = getTableName(); final SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"); long time0 = (new Date()).getTime() - (1 * 24 * 60 * 60 * 1000); // 1 day ago long time1 = (new Date()).getTime() - (7 * 24 * 60 * 60 * 1000); // 7 days ago long time2 = (new Date()).getTime() - (14 * 24 * 60 * 60 * 1000); // 14 days ago long time3 = (new Date()).getTime() - (21 * 24 * 60 * 60 * 1000); // 21 days ago Date date0 = new Date(); date0.setTime(time0); Date date1 = new Date(); date1.setTime(time1); Date date2 = new Date(); date2.setTime(time2); Date date3 = new Date(); date3.setTime(time3); // Add threads. { final Map<String, AttributeValue> reply = new HashMap<>(); reply.put("Id", new AttributeValue().withS("Amazon DynamoDB#DynamoDB Thread 1")); reply.put("ReplyDateTime", new AttributeValue().withS(dateFormatter.format(date3))); reply.put("Message", new AttributeValue().withS("DynamoDB Thread 1 Reply 1 text")); reply.put("PostedBy", new AttributeValue().withS("User A")); final PutItemRequest replyRequest = new PutItemRequest().withTableName(tableName).withItem(reply); requests.add(replyRequest); } { final Map<String, AttributeValue> reply = new HashMap<>(); reply.put("Id", new AttributeValue().withS("Amazon DynamoDB#DynamoDB Thread 1")); reply.put("ReplyDateTime", new AttributeValue().withS(dateFormatter.format(date2))); reply.put("Message", new AttributeValue().withS("DynamoDB Thread 1 Reply 2 text")); reply.put("PostedBy", new AttributeValue().withS("User B")); final PutItemRequest replyRequest = new PutItemRequest().withTableName(tableName).withItem(reply); requests.add(replyRequest); } { final Map<String, AttributeValue> reply = new HashMap<>(); reply.put("Id", new AttributeValue().withS("Amazon DynamoDB#DynamoDB Thread 2")); reply.put("ReplyDateTime", new AttributeValue().withS(dateFormatter.format(date1))); reply.put("Message", new AttributeValue().withS("DynamoDB Thread 2 Reply 1 text")); reply.put("PostedBy", new AttributeValue().withS("User A")); final PutItemRequest replyRequest = new PutItemRequest().withTableName(tableName).withItem(reply); requests.add(replyRequest); } { final Map<String, AttributeValue> reply = new HashMap<>(); reply.put("Id", new AttributeValue().withS("Amazon DynamoDB#DynamoDB Thread 2")); reply.put("ReplyDateTime", new AttributeValue().withS(dateFormatter.format(date0))); reply.put("Message", new AttributeValue().withS("DynamoDB Thread 2 Reply 2 text")); reply.put("PostedBy", new AttributeValue().withS("User A")); final PutItemRequest replyRequest = new PutItemRequest().withTableName(tableName).withItem(reply); requests.add(replyRequest); } return requests; } }