com.amazonaws.services.simpledb
Class AmazonSimpleDBClient

java.lang.Object
  com.amazonaws.AmazonWebServiceClient
      com.amazonaws.services.simpledb.AmazonSimpleDBClient

All Implemented Interfaces:

AmazonSimpleDB

Direct Known Subclasses:

AmazonSimpleDBAsyncClient

public class AmazonSimpleDBClient
extends AmazonWebServiceClient
implements AmazonSimpleDB

Client for accessing AmazonSimpleDB. All service calls made using this client are blocking, and will not return until the service call completes.

Amazon SimpleDB

Amazon SimpleDB is a web service providing the core database functions of data indexing and querying in the cloud. By offloading the time and effort associated with building and operating a web-scale database, SimpleDB provides developers the freedom to focus on application development.

A traditional, clustered relational database requires a sizable upfront capital outlay, is complex to design, and often requires extensive and repetitive database administration. Amazon SimpleDB is dramatically simpler, requiring no schema, automatically indexing your data and providing a simple API for storage and access. This approach eliminates the administrative burden of data modeling, index maintenance, and performance tuning. Developers gain access to this functionality within Amazon's proven computing environment, are able to scale instantly, and pay only for what they use.

Visit http://aws.amazon.com/simpledb/ for more information.

Field Summary

Fields inherited from class com.amazonaws.AmazonWebServiceClient

LOGGING_AWS_REQUEST_METRIC

Constructor Summary

AmazonSimpleDBClient()
Constructs a new client to invoke service methods on AmazonSimpleDB.

AmazonSimpleDBClient(AWSCredentials awsCredentials)
Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials.

AmazonSimpleDBClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials and client configuration options.

AmazonSimpleDBClient(AWSCredentialsProvider awsCredentialsProvider)
Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials provider.

AmazonSimpleDBClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials provider and client configuration options.

AmazonSimpleDBClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration, RequestMetricCollector requestMetricCollector)
Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials provider, client configuration options, and request metric collector.

AmazonSimpleDBClient(ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on AmazonSimpleDB.

Method Summary

void	batchDeleteAttributes(BatchDeleteAttributesRequest batchDeleteAttributesRequest) Performs multiple DeleteAttributes operations in a single call, which reduces round trips and latencies.
void	batchPutAttributes(BatchPutAttributesRequest batchPutAttributesRequest) The BatchPutAttributes operation creates or replaces attributes within one or more items.
void	createDomain(CreateDomainRequest createDomainRequest) The CreateDomain operation creates a new domain.
void	deleteAttributes(DeleteAttributesRequest deleteAttributesRequest) Deletes one or more attributes associated with an item.
void	deleteDomain(DeleteDomainRequest deleteDomainRequest) The DeleteDomain operation deletes a domain.
DomainMetadataResult	domainMetadata(DomainMetadataRequest domainMetadataRequest) Returns information about the domain, including when the domain was created, the number of items and attributes in the domain, and the size of the attribute names and values.
GetAttributesResult	getAttributes(GetAttributesRequest getAttributesRequest) Returns all of the attributes associated with the specified item.
SimpleDBResponseMetadata	getCachedResponseMetadata(AmazonWebServiceRequest request) Returns additional metadata for a previously executed successful, request, typically used for debugging issues where a service isn't acting as expected.
ListDomainsResult	listDomains() The ListDomains operation lists all domains associated with the Access Key ID.
ListDomainsResult	listDomains(ListDomainsRequest listDomainsRequest) The ListDomains operation lists all domains associated with the Access Key ID.
void	putAttributes(PutAttributesRequest putAttributesRequest) The PutAttributes operation creates or replaces attributes in an item.
SelectResult	select(SelectRequest selectRequest) The Select operation returns a set of attributes for ItemNames that match the select expression.

Methods inherited from class com.amazonaws.AmazonWebServiceClient

addRequestHandler, addRequestHandler, getRequestMetricsCollector, getServiceName, getSignerByURI, getSignerRegionOverride, getTimeOffset, removeRequestHandler, removeRequestHandler, setConfiguration, setEndpoint, setEndpoint, setRegion, setServiceNameIntern, setSignerRegionOverride, setTimeOffset, shutdown, withTimeOffset

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.amazonaws.services.simpledb.AmazonSimpleDB

setEndpoint, setRegion

Constructor Detail

AmazonSimpleDBClient

public AmazonSimpleDBClient()

Constructs a new client to invoke service methods on AmazonSimpleDB. A credentials provider chain will be used that searches for credentials in this order:

• Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
• Java System Properties - aws.accessKeyId and aws.secretKey
• Instance profile credentials delivered through the Amazon EC2 metadata service

All service calls made using this new client object are blocking, and will not return until the service call completes.

See Also:

DefaultAWSCredentialsProviderChain

AmazonSimpleDBClient

public AmazonSimpleDBClient(ClientConfiguration clientConfiguration)

Constructs a new client to invoke service methods on AmazonSimpleDB. A credentials provider chain will be used that searches for credentials in this order:

• Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
• Java System Properties - aws.accessKeyId and aws.secretKey
• Instance profile credentials delivered through the Amazon EC2 metadata service

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

clientConfiguration - The client configuration options controlling how this client connects to AmazonSimpleDB (ex: proxy settings, retry counts, etc.).

See Also:

DefaultAWSCredentialsProviderChain

AmazonSimpleDBClient

public AmazonSimpleDBClient(AWSCredentials awsCredentials)

Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentials - The AWS credentials (access key ID and secret key) to use when authenticating with AWS services.

AmazonSimpleDBClient

public AmazonSimpleDBClient(AWSCredentials awsCredentials,
                            ClientConfiguration clientConfiguration)

Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials and client configuration options.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentials - The AWS credentials (access key ID and secret key) to use when authenticating with AWS services.

clientConfiguration - The client configuration options controlling how this client connects to AmazonSimpleDB (ex: proxy settings, retry counts, etc.).

AmazonSimpleDBClient

public AmazonSimpleDBClient(AWSCredentialsProvider awsCredentialsProvider)

Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials provider.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentialsProvider - The AWS credentials provider which will provide credentials to authenticate requests with AWS services.

AmazonSimpleDBClient

public AmazonSimpleDBClient(AWSCredentialsProvider awsCredentialsProvider,
                            ClientConfiguration clientConfiguration)

Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials provider and client configuration options.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentialsProvider - The AWS credentials provider which will provide credentials to authenticate requests with AWS services.

clientConfiguration - The client configuration options controlling how this client connects to AmazonSimpleDB (ex: proxy settings, retry counts, etc.).

AmazonSimpleDBClient

public AmazonSimpleDBClient(AWSCredentialsProvider awsCredentialsProvider,
                            ClientConfiguration clientConfiguration,
                            RequestMetricCollector requestMetricCollector)

Constructs a new client to invoke service methods on AmazonSimpleDB using the specified AWS account credentials provider, client configuration options, and request metric collector.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentialsProvider - The AWS credentials provider which will provide credentials to authenticate requests with AWS services.

clientConfiguration - The client configuration options controlling how this client connects to AmazonSimpleDB (ex: proxy settings, retry counts, etc.).

requestMetricCollector - optional request metric collector

Method Detail

select

public SelectResult select(SelectRequest selectRequest)

The Select operation returns a set of attributes for ItemNames that match the select expression. Select is similar to the standard SQL SELECT statement.

The total size of the response cannot exceed 1 MB in total size. Amazon SimpleDB automatically adjusts the number of items returned per page to enforce this limit. For example, if the client asks to retrieve 2500 items, but each individual item is 10 kB in size, the system returns 100 items and an appropriate NextToken so the client can access the next page of results.

For information on how to construct select expressions, see Using Select to Create Amazon SimpleDB Queries in the Developer Guide.

Specified by:

select in interface AmazonSimpleDB

Parameters:

selectRequest - Container for the necessary parameters to execute the Select service method on AmazonSimpleDB.

Returns:

The response from the Select service method, as returned by AmazonSimpleDB.

Throws:

InvalidParameterValueException

InvalidQueryExpressionException

RequestTimeoutException

InvalidNumberPredicatesException

NoSuchDomainException

InvalidNextTokenException

TooManyRequestedAttributesException

MissingParameterException

InvalidNumberValueTestsException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

putAttributes

public void putAttributes(PutAttributesRequest putAttributesRequest)

The PutAttributes operation creates or replaces attributes in an item. The client may specify new attributes using a combination of the Attribute.X.Name and Attribute.X.Value parameters. The client specifies the first attribute by the parameters Attribute.0.Name and Attribute.0.Value , the second attribute by the parameters Attribute.1.Name and Attribute.1.Value , and so on.

Attributes are uniquely identified in an item by their name/value combination. For example, a single item can have the attributes { "first_name", "first_value" } and { "first_name", second_value" } . However, it cannot have two attribute instances where both the Attribute.X.Name and Attribute.X.Value are the same.

Optionally, the requestor can supply the Replace parameter for each individual attribute. Setting this value to true causes the new attribute value to replace the existing attribute value(s). For example, if an item has the attributes { 'a', '1' } , { 'b', '2'} and { 'b', '3' } and the requestor calls PutAttributes using the attributes { 'b', '4' } with the Replace parameter set to true, the final attributes of the item are changed to { 'a', '1' } and { 'b', '4' } , which replaces the previous values of the 'b' attribute with the new value.

NOTE: Using PutAttributes to replace attribute values that do not exist will not result in an error response.

You cannot specify an empty string as an attribute name.

Because Amazon SimpleDB makes multiple copies of client data and uses an eventual consistency update model, an immediate GetAttributes or Select operation (read) immediately after a PutAttributes or DeleteAttributes operation (write) might not return the updated data.

The following limitations are enforced for this operation:

• 256 total attribute name-value pairs per item
• One billion attributes per domain
• 10 GB of total user data storage per domain

Specified by:

putAttributes in interface AmazonSimpleDB

Parameters:

putAttributesRequest - Container for the necessary parameters to execute the PutAttributes service method on AmazonSimpleDB.

Throws:

InvalidParameterValueException

NumberDomainBytesExceededException

NumberDomainAttributesExceededException

NoSuchDomainException

NumberItemAttributesExceededException

AttributeDoesNotExistException

MissingParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

batchDeleteAttributes

public void batchDeleteAttributes(BatchDeleteAttributesRequest batchDeleteAttributesRequest)

Performs multiple DeleteAttributes operations in a single call, which reduces round trips and latencies. This enables Amazon SimpleDB to optimize requests, which generally yields better throughput.

NOTE: If you specify BatchDeleteAttributes without attributes or values, all the attributes for the item are deleted. BatchDeleteAttributes is an idempotent operation; running it multiple times on the same item or attribute doesn't result in an error. The BatchDeleteAttributes operation succeeds or fails in its entirety. There are no partial deletes. You can execute multiple BatchDeleteAttributes operations and other operations in parallel. However, large numbers of concurrent BatchDeleteAttributes calls can result in Service Unavailable (503) responses. This operation is vulnerable to exceeding the maximum URL size when making a REST request using the HTTP GET method. This operation does not support conditions using Expected.X.Name, Expected.X.Value, or Expected.X.Exists.

The following limitations are enforced for this operation:

• 1 MB request size
• 25 item limit per BatchDeleteAttributes operation

Specified by:

batchDeleteAttributes in interface AmazonSimpleDB

Parameters:

batchDeleteAttributesRequest - Container for the necessary parameters to execute the BatchDeleteAttributes service method on AmazonSimpleDB.

Throws:

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

deleteDomain

public void deleteDomain(DeleteDomainRequest deleteDomainRequest)

The DeleteDomain operation deletes a domain. Any items (and their attributes) in the domain are deleted as well. The DeleteDomain operation might take 10 or more seconds to complete.

NOTE: Running DeleteDomain on a domain that does not exist or running the function multiple times using the same domain name will not result in an error response.

Specified by:

deleteDomain in interface AmazonSimpleDB

Parameters:

deleteDomainRequest - Container for the necessary parameters to execute the DeleteDomain service method on AmazonSimpleDB.

Throws:

MissingParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

createDomain

public void createDomain(CreateDomainRequest createDomainRequest)

The CreateDomain operation creates a new domain. The domain name should be unique among the domains associated with the Access Key ID provided in the request. The CreateDomain operation may take 10 or more seconds to complete.

NOTE: CreateDomain is an idempotent operation; running it multiple times using the same domain name will not result in an error response.

The client can create up to 100 domains per account.

If the client requires additional domains, go to http://aws.amazon.com/contact-us/simpledb-limit-request/ .

Specified by:

createDomain in interface AmazonSimpleDB

Parameters:

createDomainRequest - Container for the necessary parameters to execute the CreateDomain service method on AmazonSimpleDB.

Throws:

InvalidParameterValueException

NumberDomainsExceededException

MissingParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

deleteAttributes

public void deleteAttributes(DeleteAttributesRequest deleteAttributesRequest)

Deletes one or more attributes associated with an item. If all attributes of the item are deleted, the item is deleted.

NOTE: If DeleteAttributes is called without being passed any attributes or values specified, all the attributes for the item are deleted.

DeleteAttributes is an idempotent operation; running it multiple times on the same item or attribute does not result in an error response.

Because Amazon SimpleDB makes multiple copies of item data and uses an eventual consistency update model, performing a GetAttributes or Select operation (read) immediately after a DeleteAttributes or PutAttributes operation (write) might not return updated item data.

Specified by:

deleteAttributes in interface AmazonSimpleDB

Parameters:

deleteAttributesRequest - Container for the necessary parameters to execute the DeleteAttributes service method on AmazonSimpleDB.

Throws:

InvalidParameterValueException

NoSuchDomainException

AttributeDoesNotExistException

MissingParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

listDomains

public ListDomainsResult listDomains(ListDomainsRequest listDomainsRequest)

The ListDomains operation lists all domains associated with the Access Key ID. It returns domain names up to the limit set by MaxNumberOfDomains. A NextToken is returned if there are more than MaxNumberOfDomains domains. Calling ListDomains successive times with the NextToken provided by the operation returns up to MaxNumberOfDomains more domain names with each successive operation call.

Specified by:

listDomains in interface AmazonSimpleDB

Parameters:

listDomainsRequest - Container for the necessary parameters to execute the ListDomains service method on AmazonSimpleDB.

Returns:

The response from the ListDomains service method, as returned by AmazonSimpleDB.

Throws:

InvalidParameterValueException

InvalidNextTokenException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

getAttributes

public GetAttributesResult getAttributes(GetAttributesRequest getAttributesRequest)

Returns all of the attributes associated with the specified item. Optionally, the attributes returned can be limited to one or more attributes by specifying an attribute name parameter.

If the item does not exist on the replica that was accessed for this operation, an empty set is returned. The system does not return an error as it cannot guarantee the item does not exist on other replicas.

NOTE: If GetAttributes is called without being passed any attribute names, all the attributes for the item are returned.

Specified by:

getAttributes in interface AmazonSimpleDB

Parameters:

getAttributesRequest - Container for the necessary parameters to execute the GetAttributes service method on AmazonSimpleDB.

Returns:

The response from the GetAttributes service method, as returned by AmazonSimpleDB.

Throws:

InvalidParameterValueException

NoSuchDomainException

MissingParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

batchPutAttributes

public void batchPutAttributes(BatchPutAttributesRequest batchPutAttributesRequest)

The BatchPutAttributes operation creates or replaces attributes within one or more items. By using this operation, the client can perform multiple PutAttribute operation with a single call. This helps yield savings in round trips and latencies, enabling Amazon SimpleDB to optimize requests and generally produce better throughput.

The client may specify the item name with the Item.X.ItemName parameter. The client may specify new attributes using a combination of the Item.X.Attribute.Y.Name and Item.X.Attribute.Y.Value parameters. The client may specify the first attribute for the first item using the parameters Item.0.Attribute.0.Name and Item.0.Attribute.0.Value , and for the second attribute for the first item by the parameters Item.0.Attribute.1.Name and Item.0.Attribute.1.Value , and so on.

Attributes are uniquely identified within an item by their name/value combination. For example, a single item can have the attributes { "first_name", "first_value" } and { "first_name", "second_value" } . However, it cannot have two attribute instances where both the Item.X.Attribute.Y.Name and Item.X.Attribute.Y.Value are the same.

Optionally, the requester can supply the Replace parameter for each individual value. Setting this value to true will cause the new attribute values to replace the existing attribute values. For example, if an item I has the attributes { 'a', '1' }, { 'b', '2'} and { 'b', '3' } and the requester does a BatchPutAttributes of {'I', 'b', '4' } with the Replace parameter set to true, the final attributes of the item will be { 'a', '1' } and { 'b', '4' } , replacing the previous values of the 'b' attribute with the new value.

NOTE: You cannot specify an empty string as an item or as an attribute name. The BatchPutAttributes operation succeeds or fails in its entirety. There are no partial puts.

IMPORTANT: This operation is vulnerable to exceeding the maximum URL size when making a REST request using the HTTP GET method. This operation does not support conditions using Expected.X.Name, Expected.X.Value, or Expected.X.Exists.

You can execute multiple BatchPutAttributes operations and other operations in parallel. However, large numbers of concurrent BatchPutAttributes calls can result in Service Unavailable (503) responses.

The following limitations are enforced for this operation:

• 256 attribute name-value pairs per item
• 1 MB request size
• 1 billion attributes per domain
• 10 GB of total user data storage per domain
• 25 item limit per BatchPutAttributes operation

Specified by:

batchPutAttributes in interface AmazonSimpleDB

Parameters:

batchPutAttributesRequest - Container for the necessary parameters to execute the BatchPutAttributes service method on AmazonSimpleDB.

Throws:

DuplicateItemNameException

InvalidParameterValueException

NumberDomainBytesExceededException

NumberSubmittedItemsExceededException

NumberSubmittedAttributesExceededException

NumberDomainAttributesExceededException

NoSuchDomainException

NumberItemAttributesExceededException

MissingParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

domainMetadata

public DomainMetadataResult domainMetadata(DomainMetadataRequest domainMetadataRequest)

Returns information about the domain, including when the domain was created, the number of items and attributes in the domain, and the size of the attribute names and values.

Specified by:

domainMetadata in interface AmazonSimpleDB

Parameters:

domainMetadataRequest - Container for the necessary parameters to execute the DomainMetadata service method on AmazonSimpleDB.

Returns:

The response from the DomainMetadata service method, as returned by AmazonSimpleDB.

Throws:

NoSuchDomainException

MissingParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

listDomains

public ListDomainsResult listDomains()
                              throws AmazonServiceException,
                                     AmazonClientException

The ListDomains operation lists all domains associated with the Access Key ID. It returns domain names up to the limit set by MaxNumberOfDomains. A NextToken is returned if there are more than MaxNumberOfDomains domains. Calling ListDomains successive times with the NextToken provided by the operation returns up to MaxNumberOfDomains more domain names with each successive operation call.

Specified by:

listDomains in interface AmazonSimpleDB

Returns:

The response from the ListDomains service method, as returned by AmazonSimpleDB.

Throws:

InvalidParameterValueException

InvalidNextTokenException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonSimpleDB indicating either a problem with the data in the request, or a server side issue.

getCachedResponseMetadata

public SimpleDBResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)

Returns additional metadata for a previously executed successful, request, typically used for debugging issues where a service isn't acting as expected. This data isn't considered part of the result data returned by an operation, so it's available through this separate, diagnostic interface.

Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing the request.

Parameters:

request - The originally executed request

Returns:

The response metadata for the specified request, or null if none is available.