com.makariev.dynamodb.data.tables.creators.UserPreferenceCreator.java Source code

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Here is the source code for com.makariev.dynamodb.data.tables.creators.UserPreferenceCreator.java

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/*
 * 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.tables.creators;

import com.amazonaws.services.dynamodbv2.model.AttributeDefinition;
import com.amazonaws.services.dynamodbv2.model.CreateTableRequest;
import com.amazonaws.services.dynamodbv2.model.GlobalSecondaryIndex;
import com.amazonaws.services.dynamodbv2.model.KeySchemaElement;
import com.amazonaws.services.dynamodbv2.model.KeyType;
import com.amazonaws.services.dynamodbv2.model.Projection;
import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput;
import com.amazonaws.services.dynamodbv2.model.ScalarAttributeType;
import com.makariev.dynamodb.data.tables.TableRequestCreator;
import com.makariev.dynamodb.preferences.UserPreference;
import java.util.ArrayList;
import java.util.List;

import static com.makariev.dynamodb.data.tables.TableRequestCreatorHelper.basicTable;

/**
 *
 * @author dmakariev
 */
public class UserPreferenceCreator implements TableRequestCreator {

    /*
     *
     * introducing Global Secondary Index:
     * http://aws.typepad.com/aws/2013/12/now-available-global-secondary-indexes-for-amazon-dynamodb.html
     *
     * create table with Global Secondary Index :
     * http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GSILowLevelJava.html
     *
     * create table with Local Secondary Index:
     * http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LSILowLevelJava.html
     *
     */
    @Override
    public CreateTableRequest getCreateTableRequest() {
        final String tableName = UserPreference.TABLE_NAME;
        final String hashKeyName = "userNo";
        final ScalarAttributeType hashKeyType = ScalarAttributeType.N;
        final Long readCapacityUnits = 10L;
        final Long writeCapacityUnits = 10L;

        ////////////////
        final CreateTableRequest request = basicTable(tableName, readCapacityUnits, writeCapacityUnits, hashKeyName,
                hashKeyType);

        //define GlobalSecondaryIndex
        request.getAttributeDefinitions().add(
                new AttributeDefinition().withAttributeName("firstName").withAttributeType(ScalarAttributeType.S));

        request.getAttributeDefinitions().add(
                new AttributeDefinition().withAttributeName("lastName").withAttributeType(ScalarAttributeType.S));

        // NameIndex
        final GlobalSecondaryIndex nameIndex = new GlobalSecondaryIndex().withIndexName(UserPreference.NAME_INDEX)
                .withProvisionedThroughput(
                        new ProvisionedThroughput().withReadCapacityUnits(10L).withWriteCapacityUnits(10L))
                .withProjection(new Projection().withProjectionType("ALL"));

        final List<KeySchemaElement> indexKeySchema = new ArrayList<>();

        indexKeySchema.add(new KeySchemaElement().withAttributeName("firstName").withKeyType(KeyType.HASH));
        indexKeySchema.add(new KeySchemaElement().withAttributeName("lastName").withKeyType(KeyType.RANGE));

        nameIndex.setKeySchema(indexKeySchema);

        request.withGlobalSecondaryIndexes(nameIndex);
        return request;
    }

}