Example usage for com.amazonaws.services.dynamodbv2.document PrimaryKey PrimaryKey

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.document PrimaryKey PrimaryKey.

Prototype

public PrimaryKey() 

Source Link

Usage

From source file:com.clicktravel.infrastructure.persistence.aws.dynamodb.DynamoDocumentStoreTemplate.java

License:Apache License

@Override
public <T extends Item> T update(final T item,
        final PersistenceExceptionHandler<?>... persistenceExceptionHandlers) {
    final ItemConfiguration itemConfiguration = getItemConfiguration(item.getClass());
    if (item.getVersion() == null) {
        return create(item);
    }/*  w ww  . j  a  va 2  s. com*/

    final Expected expectedCondition = new Expected(VERSION_ATTRIBUTE).eq(item.getVersion());
    final Long newVersion = item.getVersion() + 1l;
    item.setVersion(newVersion);

    final String tableName = databaseSchemaHolder.schemaName() + "." + itemConfiguration.tableName();
    final String itemJson = itemToString(item);
    final PrimaryKey primaryKey = new PrimaryKey();
    final ItemId itemId = itemConfiguration.getItemId(item);
    final PrimaryKeyDefinition primaryKeyDefinition = itemConfiguration.primaryKeyDefinition();
    primaryKey.addComponent(primaryKeyDefinition.propertyName(), itemId.value());
    if (primaryKeyDefinition instanceof CompoundPrimaryKeyDefinition) {
        primaryKey.addComponent(((CompoundPrimaryKeyDefinition) primaryKeyDefinition).supportingPropertyName(),
                itemId.supportingValue());
    }
    final Table table = dynamoDBClient.getTable(tableName);
    final com.amazonaws.services.dynamodbv2.document.Item previousAwsItem = table.getItem(primaryKey);
    final String previousItemJson = previousAwsItem.toJSON();

    final String mergedJson = mergeJSONObjects(itemJson, previousItemJson);
    final com.amazonaws.services.dynamodbv2.document.Item awsItem = com.amazonaws.services.dynamodbv2.document.Item
            .fromJSON(mergedJson);
    final PutItemSpec putItemSpec = new PutItemSpec().withItem(awsItem).withExpected(expectedCondition);
    try {
        table.putItem(putItemSpec);
    } catch (final ConditionalCheckFailedException e) {
        throw new OptimisticLockException("Conflicting write detected while updating item");
    }
    return item;
}

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From source file:jp.classmethod.aws.dynamodb.DynamoDbRepository.java

License:Open Source License

private static <K extends Serializable> PrimaryKey createKeys(String hashKeyName,
        ScalarAttributeType hashKeyType, K key) {
    Preconditions.checkNotNull(key);//w w  w. j  av  a2 s . co m
    Preconditions.checkArgument(hashKeyType == scalarAttributeType(key));

    //hash key only
    return new PrimaryKey().addComponent(hashKeyName, key);
}

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From source file:org.xmlsh.aws.util.AWSDDBCommand.java

License:BSD License

private static PrimaryKey getPrimaryKey(Options opts) throws InvalidArgumentException, XPathException,
        UnexpectedException, UnimplementedException, IOException {
    INameObjectMap keys = DDBTypes.parseKeyValueObjectOptions(opts);
    PrimaryKey key = new PrimaryKey();
    for (Entry<String, Object> e : keys.entrySet())
        key.addComponent(e.getKey(), e.getValue());
    return key;/*from w w  w  . j av a 2s .  c o m*/
}

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