List of usage examples for com.amazonaws.services.dynamodbv2.model Projection Projection
Projection
From source file:amazon.dynamodb.util.GeoTableUtil.java
License:Open Source License
/** * <p>// w w w. j a va 2s. c om * Construct a create table request object based on GeoDataManagerConfiguration. The users can update any aspect of * the request and call it. * </p> * Example: * * <pre> * AmazonDynamoDBClient ddb = new AmazonDynamoDBClient(new ClasspathPropertiesFileCredentialsProvider()); * Region usWest2 = Region.getRegion(Regions.US_WEST_2); * ddb.setRegion(usWest2); * * CreateTableRequest createTableRequest = GeoTableUtil.getCreateTableRequest(config); * CreateTableResult createTableResult = ddb.createTable(createTableRequest); * </pre> * * @return Generated create table request. */ public static CreateTableRequest getCreateTableRequest(GeoDataManagerConfiguration config) { CreateTableRequest createTableRequest = new CreateTableRequest().withTableName(config.getTableName()) .withProvisionedThroughput( new ProvisionedThroughput().withReadCapacityUnits(10L).withWriteCapacityUnits(5L)) .withKeySchema( new KeySchemaElement().withKeyType(KeyType.HASH) .withAttributeName(config.getHashKeyAttributeName()), new KeySchemaElement().withKeyType(KeyType.RANGE) .withAttributeName(config.getRangeKeyAttributeName())) .withAttributeDefinitions( new AttributeDefinition().withAttributeType(ScalarAttributeType.N) .withAttributeName(config.getHashKeyAttributeName()), new AttributeDefinition().withAttributeType(ScalarAttributeType.S) .withAttributeName(config.getRangeKeyAttributeName()), new AttributeDefinition().withAttributeType(ScalarAttributeType.N) .withAttributeName(config.getGeohashAttributeName())) .withLocalSecondaryIndexes(new LocalSecondaryIndex().withIndexName(config.getGeohashIndexName()) .withKeySchema( new KeySchemaElement().withKeyType(KeyType.HASH) .withAttributeName(config.getHashKeyAttributeName()), new KeySchemaElement().withKeyType(KeyType.RANGE) .withAttributeName(config.getGeohashAttributeName())) .withProjection(new Projection().withProjectionType(ProjectionType.ALL))); return createTableRequest; }
From source file:com.clicktravel.infrastructure.persistence.aws.dynamodb.manager.DynamoDbTemplateInfrastructureManager.java
License:Apache License
public void init() { for (final AbstractDynamoDbTemplate dynamoDbTemplate : dynamoDbTemplates) { final Collection<String> tablesPendingCreation = new ArrayList<>(); final DatabaseSchemaHolder databaseSchemaHolder = dynamoDbTemplate.databaseSchemaHolder(); for (final ItemConfiguration itemConfiguration : databaseSchemaHolder.itemConfigurations()) { if (VariantItemConfiguration.class.isAssignableFrom(itemConfiguration.getClass())) { continue; }/*from w w w . j a v a 2 s . c om*/ final String tableName = databaseSchemaHolder.schemaName() + "." + itemConfiguration.tableName(); if (!tablesPendingCreation.contains(tableName) && !isTableCreated(tableName)) { final List<AttributeDefinition> attributeDefinitions = new ArrayList<>(); final PrimaryKeyDefinition primaryKeyDefinition = itemConfiguration.primaryKeyDefinition(); final String hashKey = primaryKeyDefinition.propertyName(); final ScalarAttributeType hashKeyType = getAttributeType(primaryKeyDefinition.propertyType()); attributeDefinitions.add( new AttributeDefinition().withAttributeName(hashKey).withAttributeType(hashKeyType)); final List<KeySchemaElement> keySchema = new ArrayList<>(); keySchema.add(new KeySchemaElement().withAttributeName(hashKey).withKeyType(KeyType.HASH)); if (CompoundPrimaryKeyDefinition.class.isAssignableFrom(primaryKeyDefinition.getClass())) { final CompoundPrimaryKeyDefinition compoundPrimaryKeyDefinition = (CompoundPrimaryKeyDefinition) primaryKeyDefinition; final String rangeKey = compoundPrimaryKeyDefinition.supportingPropertyName(); final ScalarAttributeType rangeKeyType = getAttributeType( compoundPrimaryKeyDefinition.supportingPropertyType()); attributeDefinitions.add(new AttributeDefinition().withAttributeName(rangeKey) .withAttributeType(rangeKeyType)); keySchema .add(new KeySchemaElement().withAttributeName(rangeKey).withKeyType(KeyType.RANGE)); } final Collection<GlobalSecondaryIndex> globalSecondaryIndexes = new ArrayList<>(); for (final IndexDefinition indexDefinition : itemConfiguration.indexDefinitions()) { final ScalarAttributeType attributeType = getAttributeType( primaryKeyDefinition.propertyType()); // if there are any indexes, we need to add attributes for them attributeDefinitions .add(new AttributeDefinition().withAttributeName(indexDefinition.propertyName()) .withAttributeType(attributeType)); final ProvisionedThroughput indexProvisionedThroughput = new ProvisionedThroughput() .withReadCapacityUnits((long) readThroughput) .withWriteCapacityUnits((long) writeThroughput); final GlobalSecondaryIndex globalSecondaryIndex = new GlobalSecondaryIndex() .withIndexName(indexDefinition.propertyName() + "_idx") .withProvisionedThroughput(indexProvisionedThroughput) .withProjection(new Projection().withProjectionType("ALL")); final ArrayList<KeySchemaElement> indexKeySchema = new ArrayList<KeySchemaElement>(); indexKeySchema.add(new KeySchemaElement().withAttributeName(indexDefinition.propertyName()) .withKeyType(KeyType.HASH)); globalSecondaryIndex.setKeySchema(indexKeySchema); globalSecondaryIndexes.add(globalSecondaryIndex); } final ProvisionedThroughput tableProvisionedThroughput = new ProvisionedThroughput() .withReadCapacityUnits((long) readThroughput) .withWriteCapacityUnits((long) writeThroughput); CreateTableRequest request = new CreateTableRequest().withTableName(tableName) .withAttributeDefinitions(attributeDefinitions).withKeySchema(keySchema) .withProvisionedThroughput(tableProvisionedThroughput); if (!globalSecondaryIndexes.isEmpty()) { request = request.withGlobalSecondaryIndexes(globalSecondaryIndexes); } logger.debug("Creating table " + tableName); createTable(request, globalSecondaryIndexes.isEmpty()); tablesPendingCreation.add(tableName); } // Create tables for unique constraints if (!itemConfiguration.uniqueConstraints().isEmpty()) { final String uniqueConstraintTableName = databaseSchemaHolder.schemaName() + "-indexes." + itemConfiguration.tableName(); if (!isTableCreated(uniqueConstraintTableName)) { final List<KeySchemaElement> keySchema = new ArrayList<>(); keySchema.add(new KeySchemaElement("property", KeyType.HASH)); keySchema.add(new KeySchemaElement("value", KeyType.RANGE)); final List<AttributeDefinition> attributeDefinitions = new ArrayList<>(); attributeDefinitions.add(new AttributeDefinition("property", ScalarAttributeType.S)); attributeDefinitions.add(new AttributeDefinition("value", ScalarAttributeType.S)); final ProvisionedThroughput tableProvisionedThroughput = new ProvisionedThroughput() .withReadCapacityUnits((long) readThroughput) .withWriteCapacityUnits((long) writeThroughput); final CreateTableRequest createTableRequest = new CreateTableRequest() .withTableName(uniqueConstraintTableName) .withAttributeDefinitions(attributeDefinitions).withKeySchema(keySchema) .withProvisionedThroughput(tableProvisionedThroughput); createTable(createTableRequest, true); tablesPendingCreation.add(uniqueConstraintTableName); } } } // Create table for sequences if (!databaseSchemaHolder.sequenceConfigurations().isEmpty()) { final String sequenceTableName = databaseSchemaHolder.schemaName() + "-sequences"; if (!isTableCreated(sequenceTableName)) { final ProvisionedThroughput sequenceProvisionedThroughput = new ProvisionedThroughput() .withReadCapacityUnits((long) readThroughput) .withWriteCapacityUnits((long) writeThroughput); final List<KeySchemaElement> keySchema = new ArrayList<>(); keySchema.add(new KeySchemaElement().withAttributeName("name").withKeyType(KeyType.HASH)); final List<AttributeDefinition> attributeDefinitions = new ArrayList<>(); attributeDefinitions .add(new AttributeDefinition().withAttributeName("name").withAttributeType("S")); final CreateTableRequest request = new CreateTableRequest().withTableName(sequenceTableName) .withAttributeDefinitions(attributeDefinitions).withKeySchema(keySchema) .withProvisionedThroughput(sequenceProvisionedThroughput); logger.debug("Creating sequence table " + sequenceTableName); amazonDynamoDbClient.createTable(request); tablesPendingCreation.add(sequenceTableName); } } logger.debug("Waiting for table creation: " + tablesPendingCreation); final Collection<String> tableNames = new ArrayList<>(tablesPendingCreation); final long startTime = System.currentTimeMillis(); while (System.currentTimeMillis() - startTime < TABLE_CREATION_TIMEOUT_MS) { for (final String tableName : tableNames) { if (isTableCreated(tableName)) { logger.debug("Table " + tableName + " successfully created"); tablesPendingCreation.remove(tableName); } try { Thread.sleep(1000); } catch (final InterruptedException e) { throw new IllegalStateException(e); } } if (tablesPendingCreation.size() == 0) { break; } tableNames.clear(); tableNames.addAll(tablesPendingCreation); } if (tablesPendingCreation.size() != 0) { throw new IllegalStateException( "Unable to create tables for DynamoDb template: " + tablesPendingCreation); } // Seed the sequences with their starting values if (!databaseSchemaHolder.sequenceConfigurations().isEmpty()) { final ScanRequest scanRequest = new ScanRequest(databaseSchemaHolder.schemaName() + "-sequences"); final ScanResult scanResult = amazonDynamoDbClient.scan(scanRequest); Map<String, AttributeValue> lastEvaluatedKey = null; final Map<String, Map<String, AttributeValue>> sequenceItems = new HashMap<>(); do { for (final Map<String, AttributeValue> item : scanResult.getItems()) { sequenceItems.put(item.get("name").getS(), item); } lastEvaluatedKey = scanResult.getLastEvaluatedKey(); } while (lastEvaluatedKey != null); for (final SequenceConfiguration sequenceConfiguration : databaseSchemaHolder .sequenceConfigurations()) { final Map<String, AttributeValue> sequenceItem = sequenceItems .get(sequenceConfiguration.sequenceName()); if (sequenceItem == null) { final Map<String, ExpectedAttributeValue> expectedResults = new HashMap<>(); expectedResults.put("name", new ExpectedAttributeValue(false)); final Map<String, AttributeValue> attributeMap = new HashMap<>(); attributeMap.put("name", new AttributeValue().withS(sequenceConfiguration.sequenceName())); attributeMap.put("currentValue", new AttributeValue() .withN(String.valueOf(sequenceConfiguration.startingValue() - 1))); final String tableName = databaseSchemaHolder.schemaName() + "-sequences"; final PutItemRequest itemRequest = new PutItemRequest().withTableName(tableName) .withItem(attributeMap).withExpected(expectedResults); amazonDynamoDbClient.putItem(itemRequest); } } } dynamoDbTemplate.initialize(amazonDynamoDbClient); } }
From source file:com.erudika.para.persistence.AWSDynamoUtils.java
License:Apache License
/** * Creates a table in AWS DynamoDB which will be shared between apps. * @param readCapacity read capacity/* w w w . jav a 2 s. c o m*/ * @param writeCapacity write capacity * @return true if created */ public static boolean createSharedTable(long readCapacity, long writeCapacity) { if (StringUtils.isBlank(SHARED_TABLE) || StringUtils.containsWhitespace(SHARED_TABLE) || existsTable(SHARED_TABLE)) { return false; } try { GlobalSecondaryIndex secIndex = new GlobalSecondaryIndex().withIndexName(getSharedIndexName()) .withProvisionedThroughput( new ProvisionedThroughput().withReadCapacityUnits(1L).withWriteCapacityUnits(1L)) .withProjection(new Projection().withProjectionType(ProjectionType.ALL)).withKeySchema( new KeySchemaElement().withAttributeName(Config._APPID).withKeyType(KeyType.HASH), new KeySchemaElement().withAttributeName(Config._TIMESTAMP).withKeyType(KeyType.RANGE)); getClient().createTable(new CreateTableRequest().withTableName(getTableNameForAppid(SHARED_TABLE)) .withKeySchema(new KeySchemaElement(Config._KEY, KeyType.HASH)) .withAttributeDefinitions(new AttributeDefinition(Config._KEY, ScalarAttributeType.S), new AttributeDefinition(Config._APPID, ScalarAttributeType.S), new AttributeDefinition(Config._TIMESTAMP, ScalarAttributeType.S)) .withGlobalSecondaryIndexes(secIndex) .withProvisionedThroughput(new ProvisionedThroughput(readCapacity, writeCapacity))); } catch (Exception e) { logger.error(null, e); return false; } return true; }
From source file:com.exorath.service.party.service.DynamoDatabaseProvider.java
License:Apache License
/** * @param primKey Primary partition key for the table * @param gsi String array for global secondary index's, allow for searching on more than primary key * @return Table containing party information *//*from w w w . ja v a 2 s. c o m*/ private Table setupTable(String primKey, String... gsi) { Table table; try { ProvisionedThroughput provisionedThroughput = new ProvisionedThroughput(1L, 1L); ArrayList<GlobalSecondaryIndex> gsiArr = new ArrayList<>(); ArrayList<AttributeDefinition> attDefs = new ArrayList<>(); for (String g : gsi) { GlobalSecondaryIndex gsiIndex = new GlobalSecondaryIndex().withIndexName(g) .withProvisionedThroughput(provisionedThroughput) .withKeySchema(new KeySchemaElement().withAttributeName(g).withKeyType(KeyType.HASH)) .withProjection(new Projection().withProjectionType("ALL")); gsiArr.add(gsiIndex); attDefs.add(new AttributeDefinition(g, ScalarAttributeType.S)); } attDefs.add(new AttributeDefinition(primKey, ScalarAttributeType.S)); table = database.createTable(new CreateTableRequest().withTableName(tableName) .withKeySchema(new KeySchemaElement(primKey, KeyType.HASH)).withGlobalSecondaryIndexes(gsiArr) .withAttributeDefinitions(attDefs).withProvisionedThroughput(provisionedThroughput)); logger.info("Created DynamoDB table " + tableName + " with 1r/1w provisioning. Waiting for it to activate."); } catch (ResourceInUseException ex) { table = database.getTable(tableName); logger.info("DynamoDB table " + tableName + " already existed. Waiting for it to activate."); } try { table.waitForActive(); } catch (InterruptedException ex) { logger.error("DynamoDB table " + tableName + " could not activate!\n" + ex.getMessage()); System.exit(1); } logger.info("DynamoDB table " + tableName + " active."); return table; }
From source file:com.makariev.dynamodb.data.tables.creators.ReplyCreator.java
License:Apache License
@Override public CreateTableRequest getCreateTableRequest() { final String tableName = Reply.TABLE_NAME; final String hashKeyName = "Id"; final ScalarAttributeType hashKeyType = ScalarAttributeType.S; final Long readCapacityUnits = 10L; final Long writeCapacityUnits = 10L; final String rangeKeyName = "ReplyDateTime"; final ScalarAttributeType rangeKeyType = ScalarAttributeType.S; //////////////// final CreateTableRequest request = basicTable(tableName, readCapacityUnits, writeCapacityUnits, hashKeyName, hashKeyType);//from w w w .j a va 2 s. co m /////////////////////// //defining range key request.getKeySchema() .add(new KeySchemaElement().withAttributeName(rangeKeyName).withKeyType(KeyType.RANGE)); //defining range key request.getAttributeDefinitions() .add(new AttributeDefinition().withAttributeName(rangeKeyName).withAttributeType(rangeKeyType)); ////////////////////// //follows defininig of a local secondary index request.getAttributeDefinitions().add( new AttributeDefinition().withAttributeName("PostedBy").withAttributeType(ScalarAttributeType.S)); final List<KeySchemaElement> iks = new ArrayList<>(); iks.add(new KeySchemaElement().withAttributeName(hashKeyName).withKeyType(KeyType.HASH)); iks.add(new KeySchemaElement().withAttributeName("PostedBy").withKeyType(KeyType.RANGE)); final LocalSecondaryIndex localSecondaryIndex = new LocalSecondaryIndex().withIndexName("PostedByIndex") .withKeySchema(iks).withProjection(new Projection().withProjectionType(ProjectionType.KEYS_ONLY)); final List<LocalSecondaryIndex> localSecondaryIndexes = new ArrayList<>(); localSecondaryIndexes.add(localSecondaryIndex); request.setLocalSecondaryIndexes(localSecondaryIndexes); return request; }
From source file:com.makariev.dynamodb.data.tables.creators.UserPreferenceCreator.java
License:Apache License
@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);//from w w w . j a v a2s . c om //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; }
From source file:com.vivastream.security.oauth2.common.util.DynamoDBInitializationHelper.java
License:Apache License
public static void createTokenTables(AmazonDynamoDBClient client, DynamoDBTokenSchema schema) { GlobalSecondaryIndex gsiAuthenticationIdToken = new GlobalSecondaryIndex() // .withIndexName(schema.getAccessIndexAuthenticationId()) // .withKeySchema(new KeySchemaElement(schema.getAccessColumnAuthenticationId(), KeyType.HASH)) // .withProvisionedThroughput(DEFAULT_PROVISIONED_THROUGHPUT) // .withProjection(new Projection().withProjectionType(ProjectionType.KEYS_ONLY)); GlobalSecondaryIndex gsiRefreshToken = new GlobalSecondaryIndex() // .withIndexName(schema.getAccessIndexRefreshToken()) // .withKeySchema(new KeySchemaElement(schema.getAccessColumnRefreshToken(), KeyType.HASH)) // .withProvisionedThroughput(DEFAULT_PROVISIONED_THROUGHPUT) // .withProjection(new Projection().withProjectionType(ProjectionType.KEYS_ONLY)); GlobalSecondaryIndex gsiClientIdAndUserName = new GlobalSecondaryIndex() // .withIndexName(schema.getAccessIndexClientIdAndUserName()) // .withKeySchema( // new KeySchemaElement(schema.getAccessColumnClientId(), KeyType.HASH), // new KeySchemaElement(schema.getAccessColumnUserName(), KeyType.RANGE) // ) //// ww w .ja v a 2 s . c om .withProvisionedThroughput(DEFAULT_PROVISIONED_THROUGHPUT) // .withProjection(new Projection().withProjectionType(ProjectionType.KEYS_ONLY)); CreateTableRequest accessTableRequest = new CreateTableRequest() // .withTableName(schema.getAccessTableName()) // .withKeySchema(new KeySchemaElement(schema.getAccessColumnTokenId(), KeyType.HASH)) // .withGlobalSecondaryIndexes(gsiAuthenticationIdToken, gsiRefreshToken, gsiClientIdAndUserName) // .withAttributeDefinitions( new AttributeDefinition(schema.getAccessColumnTokenId(), ScalarAttributeType.S), // new AttributeDefinition(schema.getAccessColumnAuthenticationId(), ScalarAttributeType.S), // new AttributeDefinition(schema.getAccessColumnRefreshToken(), ScalarAttributeType.S), // new AttributeDefinition(schema.getAccessColumnClientId(), ScalarAttributeType.S), // new AttributeDefinition(schema.getAccessColumnUserName(), ScalarAttributeType.S) // ) // .withProvisionedThroughput(DEFAULT_PROVISIONED_THROUGHPUT) // ; CreateTableResult accessTableresponse = client.createTable(accessTableRequest); CreateTableRequest refreshTableRequest = new CreateTableRequest() // .withTableName(schema.getRefreshTableName()) // .withKeySchema(new KeySchemaElement(schema.getRefreshColumnTokenId(), KeyType.HASH)) // .withAttributeDefinitions( new AttributeDefinition(schema.getRefreshColumnTokenId(), ScalarAttributeType.S) // ) // .withProvisionedThroughput(DEFAULT_PROVISIONED_THROUGHPUT) // ; CreateTableResult refreshTableresponse = client.createTable(refreshTableRequest); }
From source file:DynamoDB.sample.CreateTablesLoadData.java
License:Open Source License
private static void createTable(String tableName, long readCapacityUnits, long writeCapacityUnits, String partitionKeyName, String partitionKeyType, String sortKeyName, String sortKeyType) { try {//from w w w .j a va 2 s. c o m ArrayList<KeySchemaElement> keySchema = new ArrayList<KeySchemaElement>(); keySchema.add(new KeySchemaElement().withAttributeName(partitionKeyName).withKeyType(KeyType.HASH)); //Partition key ArrayList<AttributeDefinition> attributeDefinitions = new ArrayList<AttributeDefinition>(); attributeDefinitions.add(new AttributeDefinition().withAttributeName(partitionKeyName) .withAttributeType(partitionKeyType)); if (sortKeyName != null) { keySchema.add(new KeySchemaElement().withAttributeName(sortKeyName).withKeyType(KeyType.RANGE)); //Sort key attributeDefinitions.add( new AttributeDefinition().withAttributeName(sortKeyName).withAttributeType(sortKeyType)); } CreateTableRequest request = new CreateTableRequest().withTableName(tableName).withKeySchema(keySchema) .withProvisionedThroughput(new ProvisionedThroughput().withReadCapacityUnits(readCapacityUnits) .withWriteCapacityUnits(writeCapacityUnits)); // If this is the Reply table, define a local secondary index if (replyTableName.equals(tableName)) { attributeDefinitions .add(new AttributeDefinition().withAttributeName("PostedBy").withAttributeType("S")); ArrayList<LocalSecondaryIndex> localSecondaryIndexes = new ArrayList<LocalSecondaryIndex>(); localSecondaryIndexes.add(new LocalSecondaryIndex().withIndexName("PostedBy-Index") .withKeySchema( new KeySchemaElement().withAttributeName(partitionKeyName) .withKeyType(KeyType.HASH), //Partition key new KeySchemaElement().withAttributeName("PostedBy").withKeyType(KeyType.RANGE)) //Sort key .withProjection(new Projection().withProjectionType(ProjectionType.KEYS_ONLY))); request.setLocalSecondaryIndexes(localSecondaryIndexes); } request.setAttributeDefinitions(attributeDefinitions); System.out.println("Issuing CreateTable request for " + tableName); Table table = dynamoDB.createTable(request); System.out.println("Waiting for " + tableName + " to be created...this may take a while..."); table.waitForActive(); } catch (Exception e) { System.err.println("CreateTable request failed for " + tableName); System.err.println(e.getMessage()); } }
From source file:io.venable.amazonaws.dynamo.table.builder.ProjectionBuilderImpl.java
License:Apache License
ProjectionBuilderImpl(T parent) {
this.parent = parent;
projection = new Projection();
}
From source file:jp.classmethod.aws.dynamodb.DynamoDbRepository.java
License:Open Source License
/** * Creates a GSI configuration object// w ww. ja va 2 s .co m * * @param name name of the index object to create * @param hashKey hash key of the index * @param rangeKey range key of the index * @param nonKeyAttributes determines the projection type and top level projected attributes. * if null, ALL attributes are projected. if an empty list, KEYS_ONLY are projected. * if the list has elements, only the elements INCLUDED in the list are projected * @return a description of a global secondary index that can be used to create a table. */ protected static GlobalSecondaryIndex createGlobalSecondaryIndex(String name, String hashKey, String rangeKey, List<String> nonKeyAttributes) { Preconditions.checkArgument(false == Strings.isNullOrEmpty(hashKey)); final KeySchemaElement hks = new KeySchemaElement(hashKey, KeyType.HASH); final Projection projection; if (nonKeyAttributes == null) { projection = new Projection().withProjectionType(ProjectionType.ALL); } else if (nonKeyAttributes.isEmpty()) { projection = new Projection().withProjectionType(ProjectionType.KEYS_ONLY); } else { projection = new Projection().withProjectionType(ProjectionType.INCLUDE) .withNonKeyAttributes(nonKeyAttributes); } final GlobalSecondaryIndex result = new GlobalSecondaryIndex().withIndexName(name) .withProjection(projection); if (Strings.isNullOrEmpty(rangeKey)) { result.withKeySchema(hks); } else { result.withKeySchema(hks, new KeySchemaElement(rangeKey, KeyType.RANGE)); } return result; }