Example usage for com.amazonaws.services.dynamodbv2.document.spec PutItemSpec PutItemSpec

Introduction

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

Prototype

public PutItemSpec() 

Source Link

Usage

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

License:Apache License

@Override
public <T extends Item> T create(final T item,
        final PersistenceExceptionHandler<?>... persistenceExceptionHandlers) {
    item.setVersion(1l);// ww w  .j  a  va2s .c  o m
    final ItemConfiguration itemConfiguration = getItemConfiguration(item.getClass());
    final Collection<PropertyDescriptor> createdConstraintPropertyDescriptors = createUniqueConstraintIndexes(
            item, itemConfiguration);
    final String tableName = databaseSchemaHolder.schemaName() + "." + itemConfiguration.tableName();
    final com.amazonaws.services.dynamodbv2.document.Item awsItem = com.amazonaws.services.dynamodbv2.document.Item
            .fromJSON(itemToString(item));
    final PutItemSpec putItemSpec = new PutItemSpec().withItem(awsItem);

    final Table table = dynamoDBClient.getTable(tableName);
    boolean itemRequestSucceeded = false;
    try {
        table.putItem(putItemSpec);
        itemRequestSucceeded = true;
    } finally {
        if (!itemRequestSucceeded) {
            try {
                deleteUniqueConstraintIndexes(item, itemConfiguration, createdConstraintPropertyDescriptors);
            } catch (final Exception deleteUniqueConstraintIndexesException) {
                logger.error(deleteUniqueConstraintIndexesException.getMessage(),
                        deleteUniqueConstraintIndexesException);
            }
        }
    }
    return item;
}

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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);
    }//from  w  ww.  j av  a2s .  c om

    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:com.eho.dynamodb.DynamoDBConnection.java

public static PutItemOutcome upload_resource_old(String resource) throws Exception {
    String id;//from www . j  a va2  s .co m
    JSONObject json_resource = new JSONObject(resource);
    //does the resource have a primary key?
    if (json_resource.has(PRIMARY_KEY))//if it does not have a primary key, create one using uuid
        id = json_resource.getString(PRIMARY_KEY);
    else
        id = UUID.randomUUID().toString();

    DynamoDB dynamoDB = new DynamoDB(dynamoDBClient);
    Table table = dynamoDB.getTable(PATIENT_TABLE);

    //lets retreive based on the key. if key invalid (not assigned yet) nullis returned.
    Item retreived_item = table.getItem(PRIMARY_KEY, id);
    if (retreived_item == null)//if null instantiate it
    {
        retreived_item = new Item();
        retreived_item.withPrimaryKey(PRIMARY_KEY, id);
    }

    Integer new_version = retreived_item.getInt("version") + 1;
    retreived_item.withInt("version", new_version);

    Item item_to_upload = Item.fromJSON(retreived_item.toJSONPretty()).withJSON("Document", resource);
    PutItemSpec putItemSpec = new PutItemSpec().withItem(item_to_upload).withReturnValues(ReturnValue.NONE);
    return table.putItem(putItemSpec);
}

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From source file:com.eho.dynamodb.DynamoDBConnection.java

public static String upload_resource(BaseResource resource,
        String primary_key /* if no primary key in case of post, send null*/ ) throws Exception {
    String id = add_primary_as_extension(resource, primary_key);
    String resource_string = DynamoDBConnection.fCtx.newJsonParser().setPrettyPrint(true)
            .encodeResourceToString(resource);
    ;/*from  w ww. j a  v a2  s .  c o  m*/
    DynamoDB dynamoDB = new DynamoDB(dynamoDBClient);
    Table table = dynamoDB.getTable(PATIENT_TABLE);

    //lets retreive based on the key. if key invalid (not assigned yet) nullis returned.
    Item retreived_item = table.getItem(PRIMARY_KEY, id);
    if (retreived_item == null)//if null instantiate it
    {
        retreived_item = new Item();
        retreived_item.withPrimaryKey(PRIMARY_KEY, id);
        retreived_item.withInt("version", -1);
    }

    Integer new_version = retreived_item.getInt("version") + 1;
    retreived_item.withInt("version", new_version);

    Item item_to_upload = retreived_item//Item.fromJSON(retreived_item.toJSONPretty())
            .withString("text" + new_version.toString(), resource_string)
            .withMap("json-document", new ObjectMapper().readValue(resource_string, LinkedHashMap.class));
    PutItemSpec putItemSpec = new PutItemSpec().withItem(item_to_upload);
    table.putItem(putItemSpec);
    return id;
}

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

License:Open Source License

PutItemSpec putItemSpec(Item domainItem) {
    return new PutItemSpec().withItem(domainItem).withConditionExpression(conditionalCreateCondition);
}

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

License:Open Source License

@Override
public <S extends E> S update(S domain, VersionCondition condition) {
    Preconditions.checkNotNull(domain, "domain must not be null");
    final Item domainItem = convertDomainToItem(domain);
    Preconditions.checkArgument(domainItem.hasAttribute(hashKeyName),
            "hash key must be set in domain object when updating: " + hashKeyName);

    ExpressionSpecBuilder builder = new ExpressionSpecBuilder();
    builder.withCondition(ExpressionSpecBuilder.S(hashKeyName).exists());
    if (condition != null) {
        Preconditions.checkState(versionProperty != null);
        builder.withCondition(ExpressionSpecBuilder.N(versionProperty).eq(condition.getVersion()));
    }//from   w w w.  j  a v  a 2  s. co m
    PutItemExpressionSpec xSpec = builder.buildForPut();
    PutItemSpec spec = new PutItemSpec().withItem(domainItem).withExpressionSpec(xSpec);
    try {
        table.putItem(spec);
    } catch (AmazonClientException e) {
        throw processUpdateItemException(getId(domain), e);
    }
    // PutItem does not accept ReturnValue.ALL_NEW
    return domain;
}

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