Class: Aws::SimpleDB::Client

Inherits:
Seahorse::Client::Base show all
Includes:
ClientStubs
Defined in:
gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb

Overview

An API client for SimpleDB. To construct a client, you need to configure a :region and :credentials.

client = Aws::SimpleDB::Client.new(
  region: region_name,
  credentials: credentials,
  # ...
)

For details on configuring region and credentials see the developer guide.

See #initialize for a full list of supported configuration options.

Instance Attribute Summary

Attributes inherited from Seahorse::Client::Base

#config, #handlers

API Operations collapse

Instance Method Summary collapse

Methods included from ClientStubs

#api_requests, #stub_data, #stub_responses

Methods inherited from Seahorse::Client::Base

add_plugin, api, clear_plugins, define, new, #operation_names, plugins, remove_plugin, set_api, set_plugins

Methods included from Seahorse::Client::HandlerBuilder

#handle, #handle_request, #handle_response

Constructor Details

#initialize(options) ⇒ Client

Returns a new instance of Client.

Parameters:

  • options (Hash)

Options Hash (options):

  • :plugins (Array<Seahorse::Client::Plugin>) — default: []] —

    A list of plugins to apply to the client. Each plugin is either a class name or an instance of a plugin class.

  • :credentials (required, Aws::CredentialProvider) —

    Your AWS credentials. This can be an instance of any one of the following classes:

    • Aws::Credentials - Used for configuring static, non-refreshing credentials.

    • Aws::SharedCredentials - Used for loading static credentials from a shared file, such as ~/.aws/config.

    • Aws::AssumeRoleCredentials - Used when you need to assume a role.

    • Aws::AssumeRoleWebIdentityCredentials - Used when you need to assume a role after providing credentials via the web.

    • Aws::SSOCredentials - Used for loading credentials from AWS SSO using an access token generated from aws login.

    • Aws::ProcessCredentials - Used for loading credentials from a process that outputs to stdout.

    • Aws::InstanceProfileCredentials - Used for loading credentials from an EC2 IMDS on an EC2 instance.

    • Aws::ECSCredentials - Used for loading credentials from instances running in ECS.

    • Aws::CognitoIdentityCredentials - Used for loading credentials from the Cognito Identity service.

    When :credentials are not configured directly, the following locations will be searched for credentials:

    • Aws.config[:credentials]
    • The :access_key_id, :secret_access_key, :session_token, and :account_id options.
    • ENV['AWS_ACCESS_KEY_ID'], ENV['AWS_SECRET_ACCESS_KEY'], ENV['AWS_SESSION_TOKEN'], and ENV['AWS_ACCOUNT_ID']
    • ~/.aws/credentials
    • ~/.aws/config
    • EC2/ECS IMDS instance profile - When used by default, the timeouts are very aggressive. Construct and pass an instance of Aws::InstanceProfileCredentials or Aws::ECSCredentials to enable retries and extended timeouts. Instance profile credential fetching can be disabled by setting ENV['AWS_EC2_METADATA_DISABLED'] to true.
  • :region (required, String) —

    The AWS region to connect to. The configured :region is used to determine the service :endpoint. When not passed, a default :region is searched for in the following locations:

    • Aws.config[:region]
    • ENV['AWS_REGION']
    • ENV['AMAZON_REGION']
    • ENV['AWS_DEFAULT_REGION']
    • ~/.aws/credentials
    • ~/.aws/config
  • :access_key_id (String)
  • :account_id (String)
  • :active_endpoint_cache (Boolean) — default: false —

    When set to true, a thread polling for endpoints will be running in the background every 60 secs (default). Defaults to false.

  • :adaptive_retry_wait_to_fill (Boolean) — default: true —

    Used only in adaptive retry mode. When true, the request will sleep until there is sufficent client side capacity to retry the request. When false, the request will raise a RetryCapacityNotAvailableError and will not retry instead of sleeping.

  • :client_side_monitoring (Boolean) — default: false —

    When true, client-side metrics will be collected for all API requests from this client.

  • :client_side_monitoring_client_id (String) — default: "" —

    Allows you to provide an identifier for this client which will be attached to all generated client side metrics. Defaults to an empty string.

  • :client_side_monitoring_host (String) — default: "127.0.0.1" —

    Allows you to specify the DNS hostname or IPv4 or IPv6 address that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_port (Integer) — default: 31000 —

    Required for publishing client metrics. The port that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_publisher (Aws::ClientSideMonitoring::Publisher) — default: Aws::ClientSideMonitoring::Publisher —

    Allows you to provide a custom client-side monitoring publisher class. By default, will use the Client Side Monitoring Agent Publisher.

  • :convert_params (Boolean) — default: true —

    When true, an attempt is made to coerce request parameters into the required types.

  • :correct_clock_skew (Boolean) — default: true —

    Used only in standard and adaptive retry modes. Specifies whether to apply a clock skew correction and retry requests with skewed client clocks.

  • :defaults_mode (String) — default: "legacy" —

    See DefaultsModeConfiguration for a list of the accepted modes and the configuration defaults that are included.

  • :disable_host_prefix_injection (Boolean) — default: false —

    Set to true to disable SDK automatically adding host prefix to default service endpoint when available.

  • :disable_request_compression (Boolean) — default: false —

    When set to 'true' the request body will not be compressed for supported operations.

  • :endpoint (String, URI::HTTPS, URI::HTTP) —

    Normally you should not configure the :endpoint option directly. This is normally constructed from the :region option. Configuring :endpoint is normally reserved for connecting to test or custom endpoints. The endpoint should be a URI formatted like:

    'http://example.com'
'https://example.com'
'http://example.com:123'
  • :endpoint_cache_max_entries (Integer) — default: 1000 —

    Used for the maximum size limit of the LRU cache storing endpoints data for endpoint discovery enabled operations. Defaults to 1000.

  • :endpoint_cache_max_threads (Integer) — default: 10 —

    Used for the maximum threads in use for polling endpoints to be cached, defaults to 10.

  • :endpoint_cache_poll_interval (Integer) — default: 60 —

    When :endpoint_discovery and :active_endpoint_cache is enabled, Use this option to config the time interval in seconds for making requests fetching endpoints information. Defaults to 60 sec.

  • :endpoint_discovery (Boolean) — default: false —

    When set to true, endpoint discovery will be enabled for operations when available.

  • :ignore_configured_endpoint_urls (Boolean) —

    Setting to true disables use of endpoint URLs provided via environment variables and the shared configuration file.

  • :log_formatter (Aws::Log::Formatter) — default: Aws::Log::Formatter.default —

    The log formatter.

  • :log_level (Symbol) — default: :info —

    The log level to send messages to the :logger at.

  • :logger (Logger) —

    The Logger instance to send log messages to. If this option is not set, logging will be disabled.

  • :max_attempts (Integer) — default: 3 —

    An integer representing the maximum number attempts that will be made for a single request, including the initial attempt. For example, setting this value to 5 will result in a request being retried up to 4 times. Used in standard and adaptive retry modes.

  • :profile (String) — default: "default" —

    Used when loading credentials from the shared credentials file at HOME/.aws/credentials. When not specified, 'default' is used.

  • :request_min_compression_size_bytes (Integer) — default: 10240 —

    The minimum size in bytes that triggers compression for request bodies. The value must be non-negative integer value between 0 and 10485780 bytes inclusive.

  • :retry_backoff (Proc) —

    A proc or lambda used for backoff. Defaults to 2**retries * retry_base_delay. This option is only used in the legacy retry mode.

  • :retry_base_delay (Float) — default: 0.3 —

    The base delay in seconds used by the default backoff function. This option is only used in the legacy retry mode.

  • :retry_jitter (Symbol) — default: :none —

    A delay randomiser function used by the default backoff function. Some predefined functions can be referenced by name - :none, :equal, :full, otherwise a Proc that takes and returns a number. This option is only used in the legacy retry mode.

    @see https://www.awsarchitectureblog.com/2015/03/backoff.html

  • :retry_limit (Integer) — default: 3 —

    The maximum number of times to retry failed requests. Only ~ 500 level server errors and certain ~ 400 level client errors are retried. Generally, these are throttling errors, data checksum errors, networking errors, timeout errors, auth errors, endpoint discovery, and errors from expired credentials. This option is only used in the legacy retry mode.

  • :retry_max_delay (Integer) — default: 0 —

    The maximum number of seconds to delay between retries (0 for no limit) used by the default backoff function. This option is only used in the legacy retry mode.

  • :retry_mode (String) — default: "legacy" —

    Specifies which retry algorithm to use. Values are:

    • legacy - The pre-existing retry behavior. This is default value if no retry mode is provided.

    • standard - A standardized set of retry rules across the AWS SDKs. This includes support for retry quotas, which limit the number of unsuccessful retries a client can make.

    • adaptive - An experimental retry mode that includes all the functionality of standard mode along with automatic client side throttling. This is a provisional mode that may change behavior in the future.

  • :sdk_ua_app_id (String) —

    A unique and opaque application ID that is appended to the User-Agent header as app/sdk_ua_app_id. It should have a maximum length of 50. This variable is sourced from environment variable AWS_SDK_UA_APP_ID or the shared config profile attribute sdk_ua_app_id.

  • :secret_access_key (String)
  • :session_token (String)
  • :sigv4a_signing_region_set (Array) —

    A list of regions that should be signed with SigV4a signing. When not passed, a default :sigv4a_signing_region_set is searched for in the following locations:

    • Aws.config[:sigv4a_signing_region_set]
    • ENV['AWS_SIGV4A_SIGNING_REGION_SET']
    • ~/.aws/config
  • :stub_responses (Boolean) — default: false —

    Causes the client to return stubbed responses. By default fake responses are generated and returned. You can specify the response data to return or errors to raise by calling ClientStubs#stub_responses. See ClientStubs for more information.

    Please note When response stubbing is enabled, no HTTP requests are made, and retries are disabled.

  • :telemetry_provider (Aws::Telemetry::TelemetryProviderBase) — default: Aws::Telemetry::NoOpTelemetryProvider —

    Allows you to provide a telemetry provider, which is used to emit telemetry data. By default, uses NoOpTelemetryProvider which will not record or emit any telemetry data. The SDK supports the following telemetry providers:

    • OpenTelemetry (OTel) - To use the OTel provider, install and require the opentelemetry-sdk gem and then, pass in an instance of a Aws::Telemetry::OTelProvider for telemetry provider.
  • :token_provider (Aws::TokenProvider) —

    A Bearer Token Provider. This can be an instance of any one of the following classes:

    • Aws::StaticTokenProvider - Used for configuring static, non-refreshing tokens.

    • Aws::SSOTokenProvider - Used for loading tokens from AWS SSO using an access token generated from aws login.

    When :token_provider is not configured directly, the Aws::TokenProviderChain will be used to search for tokens configured for your profile in shared configuration files.

  • :use_dualstack_endpoint (Boolean) —

    When set to true, dualstack enabled endpoints (with .aws TLD) will be used if available.

  • :use_fips_endpoint (Boolean) —

    When set to true, fips compatible endpoints will be used if available. When a fips region is used, the region is normalized and this config is set to true.

  • :validate_params (Boolean) — default: true —

    When true, request parameters are validated before sending the request.

  • :http_continue_timeout (Float) — default: 1 —

    The number of seconds to wait for a 100-continue response before sending the request body. This option has no effect unless the request has "Expect" header set to "100-continue". Defaults to nil which disables this behaviour. This value can safely be set per request on the session.

  • :http_idle_timeout (Float) — default: 5 —

    The number of seconds a connection is allowed to sit idle before it is considered stale. Stale connections are closed and removed from the pool before making a request.

  • :http_open_timeout (Float) — default: 15 —

    The default number of seconds to wait for response data. This value can safely be set per-request on the session.

  • :http_proxy (URI::HTTP, String) —

    A proxy to send requests through. Formatted like 'http://proxy.com:123'.

  • :http_read_timeout (Float) — default: 60 —

    The default number of seconds to wait for response data. This value can safely be set per-request on the session.

  • :http_wire_trace (Boolean) — default: false —

    When true, HTTP debug output will be sent to the :logger.

  • :on_chunk_received (Proc) —

    When a Proc object is provided, it will be used as callback when each chunk of the response body is received. It provides three arguments: the chunk, the number of bytes received, and the total number of bytes in the response (or nil if the server did not send a content-length).

  • :on_chunk_sent (Proc) —

    When a Proc object is provided, it will be used as callback when each chunk of the request body is sent. It provides three arguments: the chunk, the number of bytes read from the body, and the total number of bytes in the body.

  • :raise_response_errors (Boolean) — default: true —

    When true, response errors are raised.

  • :ssl_ca_bundle (String) —

    Full path to the SSL certificate authority bundle file that should be used when verifying peer certificates. If you do not pass :ssl_ca_bundle or :ssl_ca_directory the the system default will be used if available.

  • :ssl_ca_directory (String) —

    Full path of the directory that contains the unbundled SSL certificate authority files for verifying peer certificates. If you do not pass :ssl_ca_bundle or :ssl_ca_directory the the system default will be used if available.

  • :ssl_ca_store (String) —

    Sets the X509::Store to verify peer certificate.

  • :ssl_cert (OpenSSL::X509::Certificate) —

    Sets a client certificate when creating http connections.

  • :ssl_key (OpenSSL::PKey) —

    Sets a client key when creating http connections.

  • :ssl_timeout (Float) —

    Sets the SSL timeout in seconds

  • :ssl_verify_peer (Boolean) — default: true —

    When true, SSL peer certificates are verified when establishing a connection.



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 438

def initialize(*args)
  super
end

Instance Method Details

#batch_delete_attributes(params = {}) ⇒ Struct

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.

The following limitations are enforced for this operation: * 1 MB request size * 25 item limit per BatchDeleteAttributes operation

Examples:

Request syntax with placeholder values


resp = client.batch_delete_attributes({
  domain_name: "String", # required
  items: [ # required
    {
      name: "String", # required
      attributes: [
        {
          name: "String", # required
          alternate_name_encoding: "String",
          value: "String", # required
          alternate_value_encoding: "String",
        },
      ],
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain in which the attributes are being deleted.

  • :items (required, Array<Types::DeletableItem>) —

    A list of items on which to perform the operation.

Returns:

  • (Struct) —

    Returns an empty response.



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 481

def batch_delete_attributes(params = {}, options = {})
  req = build_request(:batch_delete_attributes, params)
  req.send_request(options)
end

#batch_put_attributes(params = {}) ⇒ Struct

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.

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

Examples:

Request syntax with placeholder values


resp = client.batch_put_attributes({
  domain_name: "String", # required
  items: [ # required
    {
      name: "String", # required
      attributes: [ # required
        {
          name: "String", # required
          value: "String", # required
          replace: false,
        },
      ],
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain in which the attributes are being stored.

  • :items (required, Array<Types::ReplaceableItem>) —

    A list of items on which to perform the operation.

Returns:

  • (Struct) —

    Returns an empty response.



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 562

def batch_put_attributes(params = {}, options = {})
  req = build_request(:batch_put_attributes, params)
  req.send_request(options)
end

#create_domain(params = {}) ⇒ Struct

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.

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/.

Examples:

Request syntax with placeholder values


resp = client.create_domain({
  domain_name: "String", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain to create. The name can range between 3 and 255 characters and can contain the following characters: a-z, A-Z, 0-9, '_', '-', and '.'.

Returns:

  • (Struct) —

    Returns an empty response.



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 596

def create_domain(params = {}, options = {})
  req = build_request(:create_domain, params)
  req.send_request(options)
end

#delete_attributes(params = {}) ⇒ Struct

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

Examples:

Request syntax with placeholder values


resp = client.delete_attributes({
  domain_name: "String", # required
  item_name: "String", # required
  attributes: [
    {
      name: "String", # required
      alternate_name_encoding: "String",
      value: "String", # required
      alternate_value_encoding: "String",
    },
  ],
  expected: {
    name: "String",
    value: "String",
    exists: false,
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain in which to perform the operation.

  • :item_name (required, String) —

    The name of the item. Similar to rows on a spreadsheet, items represent individual objects that contain one or more value-attribute pairs.

  • :attributes (Array<Types::Attribute>) —

    A list of Attributes. Similar to columns on a spreadsheet, attributes represent categories of data that can be assigned to items.

  • :expected (Types::UpdateCondition) —

    The update condition which, if specified, determines whether the specified attributes will be deleted or not. The update condition must be satisfied in order for this request to be processed and the attributes to be deleted.

Returns:

  • (Struct) —

    Returns an empty response.



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 655

def delete_attributes(params = {}, options = {})
  req = build_request(:delete_attributes, params)
  req.send_request(options)
end

#delete_domain(params = {}) ⇒ Struct

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.

Examples:

Request syntax with placeholder values


resp = client.delete_domain({
  domain_name: "String", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain to delete.

Returns:

  • (Struct) —

    Returns an empty response.



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 677

def delete_domain(params = {}, options = {})
  req = build_request(:delete_domain, params)
  req.send_request(options)
end

#domain_metadata(params = {}) ⇒ Types::DomainMetadataResult

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.

Examples:

Request syntax with placeholder values


resp = client.domain_metadata({
  domain_name: "String", # required
})

Response structure


resp.item_count #=> Integer
resp.item_names_size_bytes #=> Integer
resp.attribute_name_count #=> Integer
resp.attribute_names_size_bytes #=> Integer
resp.attribute_value_count #=> Integer
resp.attribute_values_size_bytes #=> Integer
resp.timestamp #=> Integer

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain for which to display the metadata of.

Returns:



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 717

def domain_metadata(params = {}, options = {})
  req = build_request(:domain_metadata, params)
  req.send_request(options)
end

#get_attributes(params = {}) ⇒ Types::GetAttributesResult

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.

Examples:

Request syntax with placeholder values


resp = client.get_attributes({
  domain_name: "String", # required
  item_name: "String", # required
  attribute_names: ["String"],
  consistent_read: false,
})

Response structure


resp.attributes #=> Array
resp.attributes[0].name #=> String
resp.attributes[0].alternate_name_encoding #=> String
resp.attributes[0].value #=> String
resp.attributes[0].alternate_value_encoding #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain in which to perform the operation.

  • :item_name (required, String) —

    The name of the item.

  • :attribute_names (Array<String>) —

    The names of the attributes.

  • :consistent_read (Boolean) —

    Determines whether or not strong consistency should be enforced when data is read from SimpleDB. If true, any data previously written to SimpleDB will be returned. Otherwise, results will be consistent eventually, and the client may not see data that was written immediately before your read.

Returns:



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 766

def get_attributes(params = {}, options = {})
  req = build_request(:get_attributes, params)
  req.send_request(options)
end

#list_domains(params = {}) ⇒ Types::ListDomainsResult

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.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.list_domains({
  max_number_of_domains: 1,
  next_token: "String",
})

Response structure


resp.domain_names #=> Array
resp.domain_names[0] #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :max_number_of_domains (Integer) —

    The maximum number of domain names you want returned. The range is 1 to 100. The default setting is 100.

  • :next_token (String) —

    A string informing Amazon SimpleDB where to start the next list of domain names.

Returns:



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 809

def list_domains(params = {}, options = {})
  req = build_request(:list_domains, params)
  req.send_request(options)
end

#put_attributes(params = {}) ⇒ Struct

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.

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

Examples:

Request syntax with placeholder values


resp = client.put_attributes({
  domain_name: "String", # required
  item_name: "String", # required
  attributes: [ # required
    {
      name: "String", # required
      value: "String", # required
      replace: false,
    },
  ],
  expected: {
    name: "String",
    value: "String",
    exists: false,
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :domain_name (required, String) —

    The name of the domain in which to perform the operation.

  • :item_name (required, String) —

    The name of the item.

  • :attributes (required, Array<Types::ReplaceableAttribute>) —

    The list of attributes.

  • :expected (Types::UpdateCondition) —

    The update condition which, if specified, determines whether the specified attributes will be updated or not. The update condition must be satisfied in order for this request to be processed and the attributes to be updated.

Returns:

  • (Struct) —

    Returns an empty response.



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 887

def put_attributes(params = {}, options = {})
  req = build_request(:put_attributes, params)
  req.send_request(options)
end

#select(params = {}) ⇒ Types::SelectResult

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.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.select({
  select_expression: "String", # required
  next_token: "String",
  consistent_read: false,
})

Response structure


resp.items #=> Array
resp.items[0].name #=> String
resp.items[0].alternate_name_encoding #=> String
resp.items[0].attributes #=> Array
resp.items[0].attributes[0].name #=> String
resp.items[0].attributes[0].alternate_name_encoding #=> String
resp.items[0].attributes[0].value #=> String
resp.items[0].attributes[0].alternate_value_encoding #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :select_expression (required, String) —

    The expression used to query the domain.

  • :next_token (String) —

    A string informing Amazon SimpleDB where to start the next list of ItemNames.

  • :consistent_read (Boolean) —

    Determines whether or not strong consistency should be enforced when data is read from SimpleDB. If true, any data previously written to SimpleDB will be returned. Otherwise, results will be consistent eventually, and the client may not see data that was written immediately before your read.

Returns:



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# File 'gems/aws-sdk-simpledb/lib/aws-sdk-simpledb/client.rb', line 944

def select(params = {}, options = {})
  req = build_request(:select, params)
  req.send_request(options)
end