/// <summary>
/// Creates a new item, or replaces an old item with a new item. If an item that has the
/// same primary key as the new item already exists in the specified table, the new item
/// completely replaces the existing item. You can perform a conditional put operation
/// (add a new item if one with the specified primary key doesn't exist), or replace an
/// existing item if it has certain attribute values.
///
///
/// <para>
/// In addition to putting an item, you can also return the item's attribute values in
/// the same operation, using the <i>ReturnValues</i> parameter.
/// </para>
///
/// <para>
/// When you add an item, the primary key attribute(s) are the only required attributes.
/// Attribute values cannot be null. String and Binary type attributes must have lengths
/// greater than zero. Set type attributes cannot be empty. Requests with empty values
/// will be rejected with a <i>ValidationException</i> exception.
/// </para>
///
/// <para>
/// You can request that <i>PutItem</i> return either a copy of the original item (before
/// the update) or a copy of the updated item (after the update). For more information,
/// see the <i>ReturnValues</i> description below.
/// </para>
/// <note>
/// <para>
/// To prevent a new item from replacing an existing item, use a conditional put operation
/// with <i>ComparisonOperator</i> set to <code>NULL</code> for the primary key attribute,
/// or attributes.
/// </para>
/// </note>
/// <para>
/// For more information about using this API, see <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithItems.html">Working
/// with Items</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </para>
/// </summary>
/// <param name="tableName">The name of the table to contain the item.</param>
/// <param name="item">A map of attribute name/value pairs, one for each attribute. Only the primary key attributes are required; you can optionally provide other attribute name-value pairs for the item. You must provide all of the attributes for the primary key. For example, with a hash type primary key, you only need to provide the hash attribute. For a hash-and-range type primary key, you must provide both the hash attribute and the range attribute. If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition. For more information about primary keys, see <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html#DataModelPrimaryKey">Primary Key</a> in the <i>Amazon DynamoDB Developer Guide</i>. Each element in the <i>Item</i> map is an <i>AttributeValue</i> object.</param>
/// <param name="returnValues">Use <i>ReturnValues</i> if you want to get the item attributes as they appeared before they were updated with the <i>PutItem</i> request. For <i>PutItem</i>, the valid values are: <ul> <li> <code>NONE</code> - If <i>ReturnValues</i> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <i>ReturnValues</i>.) </li> <li> <code>ALL_OLD</code> - If <i>PutItem</i> overwrote an attribute name-value pair, then the content of the old item is returned. </li> </ul></param>
///
/// <returns>The response from the PutItem service method, as returned by DynamoDB.</returns>
/// <exception cref="Amazon.DynamoDBv2.Model.ConditionalCheckFailedException">
/// A condition specified in the operation could not be evaluated.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.InternalServerErrorException">
/// An error occurred on the server side.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ItemCollectionSizeLimitExceededException">
/// An item collection is too large. This exception is only returned for tables that have
/// one or more local secondary indexes.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ProvisionedThroughputExceededException">
/// The request rate is too high, or the request is too large, for the available throughput
/// to accommodate. The AWS SDKs automatically retry requests that receive this exception;
/// therefore, your request will eventually succeed, unless the request is too large or
/// your retry queue is too large to finish. Reduce the frequency of requests by using
/// the strategies listed in <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries">Error
/// Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ResourceNotFoundException">
/// The operation tried to access a nonexistent table or index. The resource might not
/// be specified correctly, or its status might not be <code>ACTIVE</code>.
/// </exception>
public PutItemResponse PutItem(string tableName, Dictionary<string, AttributeValue> item, ReturnValue returnValues)
{
var request = new PutItemRequest();
request.TableName = tableName;
request.Item = item;
request.ReturnValues = returnValues;
return PutItem(request);
}
/// <summary>
/// Edits an existing item's attributes, or adds a new item to the table if it does not
/// already exist. You can put, delete, or add attribute values. You can also perform
/// a conditional update on an existing item (insert a new attribute name-value pair if
/// it doesn't exist, or replace an existing name-value pair if it has certain expected
/// attribute values). If conditions are specified and the item does not exist, then the
/// operation fails and a new item is not created.
///
///
/// <para>
/// You can also return the item's attribute values in the same <i>UpdateItem</i> operation
/// using the <i>ReturnValues</i> parameter.
/// </para>
/// </summary>
/// <param name="tableName">The name of the table containing the item to update. </param>
/// <param name="key">The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute. For the primary key, you must provide all of the attributes. For example, with a hash type primary key, you only need to provide the hash attribute. For a hash-and-range type primary key, you must provide both the hash attribute and the range attribute.</param>
/// <param name="attributeUpdates"><important> This is a legacy parameter, for backward compatibility. New applications should use <i>UpdateExpression</i> instead. Do not combine legacy parameters and expression parameters in a single API call; otherwise, DynamoDB will return a <i>ValidationException</i> exception. This parameter can be used for modifying top-level attributes; however, it does not support individual list or map elements. </important> The names of attributes to be modified, the action to perform on each, and the new value for each. If you are updating an attribute that is an index key attribute for any indexes on that table, the attribute type must match the index key type defined in the <i>AttributesDefinition</i> of the table description. You can use <i>UpdateItem</i> to update any nonkey attributes. Attribute values cannot be null. String and Binary type attributes must have lengths greater than zero. Set type attributes must not be empty. Requests with empty values will be rejected with a <i>ValidationException</i> exception. Each <i>AttributeUpdates</i> element consists of an attribute name to modify, along with the following: <ul> <li> <i>Value</i> - The new value, if applicable, for this attribute. </li> <li> <i>Action</i> - A value that specifies how to perform the update. This action is only valid for an existing attribute whose data type is Number or is a set; do not use <code>ADD</code> for other data types. If an item with the specified primary key is found in the table, the following values perform the following actions: <ul> <li> <code>PUT</code> - Adds the specified attribute to the item. If the attribute already exists, it is replaced by the new value. </li> <li> <code>DELETE</code> - Removes the attribute and its value, if no value is specified for <code>DELETE</code>. The data type of the specified value must match the existing value's data type. If a set of values is specified, then those values are subtracted from the old set. For example, if the attribute value was the set <code>[a,b,c]</code> and the <code>DELETE</code> action specifies <code>[a,c]</code>, then the final attribute value is <code>[b]</code>. Specifying an empty set is an error. </li> <li> <code>ADD</code> - Adds the specified value to the item, if the attribute does not already exist. If the attribute does exist, then the behavior of <code>ADD</code> depends on the data type of the attribute: <ul> <li> If the existing attribute is a number, and if <i>Value</i> is also a number, then <i>Value</i> is mathematically added to the existing attribute. If <i>Value</i> is a negative number, then it is subtracted from the existing attribute. <note> If you use <code>ADD</code> to increment or decrement a number value for an item that doesn't exist before the update, DynamoDB uses 0 as the initial value. Similarly, if you use <code>ADD</code> for an existing item to increment or decrement an attribute value that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value. For example, suppose that the item you want to update doesn't have an attribute named <i>itemcount</i>, but you decide to <code>ADD</code> the number <code>3</code> to this attribute anyway. DynamoDB will create the <i>itemcount</i> attribute, set its initial value to <code>0</code>, and finally add <code>3</code> to it. The result will be a new <i>itemcount</i> attribute, with a value of <code>3</code>. </note> </li> <li> If the existing data type is a set, and if <i>Value</i> is also a set, then <i>Value</i> is appended to the existing set. For example, if the attribute value is the set <code>[1,2]</code>, and the <code>ADD</code> action specified <code>[3]</code>, then the final attribute value is <code>[1,2,3]</code>. An error occurs if an <code>ADD</code> action is specified for a set attribute and the attribute type specified does not match the existing set type. Both sets must have the same primitive data type. For example, if the existing data type is a set of strings, <i>Value</i> must also be a set of strings. </li> </ul> </li> </ul> If no item with the specified key is found in the table, the following values perform the following actions: <ul> <li> <code>PUT</code> - Causes DynamoDB to create a new item with the specified primary key, and then adds the attribute. </li> <li> <code>DELETE</code> - Nothing happens, because attributes cannot be deleted from a nonexistent item. The operation succeeds, but DynamoDB does not create a new item. </li> <li> <code>ADD</code> - Causes DynamoDB to create an item with the supplied primary key and number (or set of numbers) for the attribute value. The only data types allowed are Number and Number Set. </li> </ul> </li> </ul> If you provide any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition.</param>
/// <param name="returnValues">Use <i>ReturnValues</i> if you want to get the item attributes as they appeared either before or after they were updated. For <i>UpdateItem</i>, the valid values are: <ul> <li> <code>NONE</code> - If <i>ReturnValues</i> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <i>ReturnValues</i>.) </li> <li> <code>ALL_OLD</code> - If <i>UpdateItem</i> overwrote an attribute name-value pair, then the content of the old item is returned. </li> <li> <code>UPDATED_OLD</code> - The old versions of only the updated attributes are returned. </li> <li> <code>ALL_NEW</code> - All of the attributes of the new version of the item are returned. </li> <li> <code>UPDATED_NEW</code> - The new versions of only the updated attributes are returned. </li> </ul></param>
///
/// <returns>The response from the UpdateItem service method, as returned by DynamoDB.</returns>
/// <exception cref="Amazon.DynamoDBv2.Model.ConditionalCheckFailedException">
/// A condition specified in the operation could not be evaluated.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.InternalServerErrorException">
/// An error occurred on the server side.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ItemCollectionSizeLimitExceededException">
/// An item collection is too large. This exception is only returned for tables that have
/// one or more local secondary indexes.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ProvisionedThroughputExceededException">
/// The request rate is too high, or the request is too large, for the available throughput
/// to accommodate. The AWS SDKs automatically retry requests that receive this exception;
/// therefore, your request will eventually succeed, unless the request is too large or
/// your retry queue is too large to finish. Reduce the frequency of requests by using
/// the strategies listed in <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries">Error
/// Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ResourceNotFoundException">
/// The operation tried to access a nonexistent table or index. The resource might not
/// be specified correctly, or its status might not be <code>ACTIVE</code>.
/// </exception>
public UpdateItemResponse UpdateItem(string tableName, Dictionary<string, AttributeValue> key, Dictionary<string, AttributeValueUpdate> attributeUpdates, ReturnValue returnValues)
{
var request = new UpdateItemRequest();
request.TableName = tableName;
request.Key = key;
request.AttributeUpdates = attributeUpdates;
request.ReturnValues = returnValues;
return UpdateItem(request);
}
/// <summary>
/// Deletes a single item in a table by primary key. You can perform a conditional delete
/// operation that deletes the item if it exists, or if it has an expected attribute value.
///
///
/// <para>
/// In addition to deleting an item, you can also return the item's attribute values in
/// the same operation, using the <i>ReturnValues</i> parameter.
/// </para>
///
/// <para>
/// Unless you specify conditions, the <i>DeleteItem</i> is an idempotent operation; running
/// it multiple times on the same item or attribute does <i>not</i> result in an error
/// response.
/// </para>
///
/// <para>
/// Conditional deletes are useful for deleting items only if specific conditions are
/// met. If those conditions are met, DynamoDB performs the delete. Otherwise, the item
/// is not deleted.
/// </para>
/// </summary>
/// <param name="tableName">The name of the table from which to delete the item.</param>
/// <param name="key">A map of attribute names to <i>AttributeValue</i> objects, representing the primary key of the item to delete. For the primary key, you must provide all of the attributes. For example, with a hash type primary key, you only need to provide the hash attribute. For a hash-and-range type primary key, you must provide both the hash attribute and the range attribute.</param>
/// <param name="returnValues">Use <i>ReturnValues</i> if you want to get the item attributes as they appeared before they were deleted. For <i>DeleteItem</i>, the valid values are: <ul> <li> <code>NONE</code> - If <i>ReturnValues</i> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <i>ReturnValues</i>.) </li> <li> <code>ALL_OLD</code> - The content of the old item is returned. </li> </ul></param>
///
/// <returns>The response from the DeleteItem service method, as returned by DynamoDB.</returns>
/// <exception cref="Amazon.DynamoDBv2.Model.ConditionalCheckFailedException">
/// A condition specified in the operation could not be evaluated.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.InternalServerErrorException">
/// An error occurred on the server side.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ItemCollectionSizeLimitExceededException">
/// An item collection is too large. This exception is only returned for tables that have
/// one or more local secondary indexes.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ProvisionedThroughputExceededException">
/// The request rate is too high, or the request is too large, for the available throughput
/// to accommodate. The AWS SDKs automatically retry requests that receive this exception;
/// therefore, your request will eventually succeed, unless the request is too large or
/// your retry queue is too large to finish. Reduce the frequency of requests by using
/// the strategies listed in <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries">Error
/// Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ResourceNotFoundException">
/// The operation tried to access a nonexistent table or index. The resource might not
/// be specified correctly, or its status might not be <code>ACTIVE</code>.
/// </exception>
public DeleteItemResponse DeleteItem(string tableName, Dictionary<string, AttributeValue> key, ReturnValue returnValues)
{
var request = new DeleteItemRequest();
request.TableName = tableName;
request.Key = key;
request.ReturnValues = returnValues;
return DeleteItem(request);
}
/// <summary>
/// Deletes a single item in a table by primary key. You can perform a conditional delete
/// operation that deletes the item if it exists, or if it has an expected attribute value.
///
///
/// <para>
/// In addition to deleting an item, you can also return the item's attribute values in
/// the same operation, using the <i>ReturnValues</i> parameter.
/// </para>
///
/// <para>
/// Unless you specify conditions, the <i>DeleteItem</i> is an idempotent operation; running
/// it multiple times on the same item or attribute does <i>not</i> result in an error
/// response.
/// </para>
///
/// <para>
/// Conditional deletes are useful for deleting items only if specific conditions are
/// met. If those conditions are met, DynamoDB performs the delete. Otherwise, the item
/// is not deleted.
/// </para>
/// </summary>
/// <param name="tableName">The name of the table from which to delete the item.</param>
/// <param name="key">A map of attribute names to <i>AttributeValue</i> objects, representing the primary key of the item to delete. For the primary key, you must provide all of the attributes. For example, with a hash type primary key, you only need to provide the hash attribute. For a hash-and-range type primary key, you must provide both the hash attribute and the range attribute.</param>
/// <param name="returnValues">Use <i>ReturnValues</i> if you want to get the item attributes as they appeared before they were deleted. For <i>DeleteItem</i>, the valid values are: <ul> <li> <code>NONE</code> - If <i>ReturnValues</i> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <i>ReturnValues</i>.) </li> <li> <code>ALL_OLD</code> - The content of the old item is returned. </li> </ul></param>
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
///
/// <returns>The response from the DeleteItem service method, as returned by DynamoDB.</returns>
/// <exception cref="Amazon.DynamoDBv2.Model.ConditionalCheckFailedException">
/// A condition specified in the operation could not be evaluated.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.InternalServerErrorException">
/// An error occurred on the server side.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ItemCollectionSizeLimitExceededException">
/// An item collection is too large. This exception is only returned for tables that have
/// one or more local secondary indexes.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ProvisionedThroughputExceededException">
/// Your request rate is too high. The AWS SDKs for DynamoDB automatically retry requests
/// that receive this exception. Your request is eventually successful, unless your retry
/// queue is too large to finish. Reduce the frequency of requests and use exponential
/// backoff. For more information, go to <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries">Error
/// Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ResourceNotFoundException">
/// The operation tried to access a nonexistent table or index. The resource might not
/// be specified correctly, or its status might not be <code>ACTIVE</code>.
/// </exception>
public Task<DeleteItemResponse> DeleteItemAsync(string tableName, Dictionary<string, AttributeValue> key, ReturnValue returnValues, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var request = new DeleteItemRequest();
request.TableName = tableName;
request.Key = key;
request.ReturnValues = returnValues;
return DeleteItemAsync(request, cancellationToken);
}
/// <summary>
/// Creates a new item, or replaces an old item with a new item. If an item that has the
/// same primary key as the new item already exists in the specified table, the new item
/// completely replaces the existing item. You can perform a conditional put operation
/// (add a new item if one with the specified primary key doesn't exist), or replace an
/// existing item if it has certain attribute values.
///
///
/// <para>
/// In addition to putting an item, you can also return the item's attribute values in
/// the same operation, using the <i>ReturnValues</i> parameter.
/// </para>
///
/// <para>
/// When you add an item, the primary key attribute(s) are the only required attributes.
/// Attribute values cannot be null. String and Binary type attributes must have lengths
/// greater than zero. Set type attributes cannot be empty. Requests with empty values
/// will be rejected with a <i>ValidationException</i> exception.
/// </para>
///
/// <para>
/// You can request that <i>PutItem</i> return either a copy of the original item (before
/// the update) or a copy of the updated item (after the update). For more information,
/// see the <i>ReturnValues</i> description below.
/// </para>
/// <note>
/// <para>
/// To prevent a new item from replacing an existing item, use a conditional put operation
/// with <i>ComparisonOperator</i> set to <code>NULL</code> for the primary key attribute,
/// or attributes.
/// </para>
/// </note>
/// <para>
/// For more information about using this API, see <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithItems.html">Working
/// with Items</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </para>
/// </summary>
/// <param name="tableName">The name of the table to contain the item.</param>
/// <param name="item">A map of attribute name/value pairs, one for each attribute. Only the primary key attributes are required; you can optionally provide other attribute name-value pairs for the item. You must provide all of the attributes for the primary key. For example, with a hash type primary key, you only need to provide the hash attribute. For a hash-and-range type primary key, you must provide both the hash attribute and the range attribute. If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition. For more information about primary keys, see <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html#DataModelPrimaryKey">Primary Key</a> in the <i>Amazon DynamoDB Developer Guide</i>. Each element in the <i>Item</i> map is an <i>AttributeValue</i> object.</param>
/// <param name="returnValues">Use <i>ReturnValues</i> if you want to get the item attributes as they appeared before they were updated with the <i>PutItem</i> request. For <i>PutItem</i>, the valid values are: <ul> <li> <code>NONE</code> - If <i>ReturnValues</i> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <i>ReturnValues</i>.) </li> <li> <code>ALL_OLD</code> - If <i>PutItem</i> overwrote an attribute name-value pair, then the content of the old item is returned. </li> </ul> <note>Other "Valid Values" are not relevant to PutItem.</note></param>
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
///
/// <returns>The response from the PutItem service method, as returned by DynamoDB.</returns>
/// <exception cref="Amazon.DynamoDBv2.Model.ConditionalCheckFailedException">
/// A condition specified in the operation could not be evaluated.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.InternalServerErrorException">
/// An error occurred on the server side.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ItemCollectionSizeLimitExceededException">
/// An item collection is too large. This exception is only returned for tables that have
/// one or more local secondary indexes.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ProvisionedThroughputExceededException">
/// Your request rate is too high. The AWS SDKs for DynamoDB automatically retry requests
/// that receive this exception. Your request is eventually successful, unless your retry
/// queue is too large to finish. Reduce the frequency of requests and use exponential
/// backoff. For more information, go to <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries">Error
/// Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ResourceNotFoundException">
/// The operation tried to access a nonexistent table or index. The resource might not
/// be specified correctly, or its status might not be <code>ACTIVE</code>.
/// </exception>
public Task<PutItemResponse> PutItemAsync(string tableName, Dictionary<string, AttributeValue> item, ReturnValue returnValues, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var request = new PutItemRequest();
request.TableName = tableName;
request.Item = item;
request.ReturnValues = returnValues;
return PutItemAsync(request, cancellationToken);
}
/// <summary>
/// Edits an existing item's attributes, or adds a new item to the table if it does not
/// already exist. You can put, delete, or add attribute values. You can also perform
/// a conditional update on an existing item (insert a new attribute name-value pair if
/// it doesn't exist, or replace an existing name-value pair if it has certain expected
/// attribute values). If conditions are specified and the item does not exist, then the
/// operation fails and a new item is not created.
///
///
/// <para>
/// You can also return the item's attribute values in the same <i>UpdateItem</i> operation
/// using the <i>ReturnValues</i> parameter.
/// </para>
/// </summary>
/// <param name="tableName">The name of the table containing the item to update. </param>
/// <param name="key">The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute. For the primary key, you must provide all of the attributes. For example, with a hash type primary key, you only need to provide the hash attribute. For a hash-and-range type primary key, you must provide both the hash attribute and the range attribute.</param>
/// <param name="attributeUpdates"><important> There is a newer parameter available. Use <i>UpdateExpression</i> instead. Note that if you use <i>AttributeUpdates</i> and <i>UpdateExpression</i> at the same time, DynamoDB will return a <i>ValidationException</i> exception. This parameter can be used for modifying top-level attributes; however, it does not support individual list or map elements. </important> The names of attributes to be modified, the action to perform on each, and the new value for each. If you are updating an attribute that is an index key attribute for any indexes on that table, the attribute type must match the index key type defined in the <i>AttributesDefinition</i> of the table description. You can use <i>UpdateItem</i> to update any nonkey attributes. Attribute values cannot be null. String and Binary type attributes must have lengths greater than zero. Set type attributes must not be empty. Requests with empty values will be rejected with a <i>ValidationException</i> exception. Each <i>AttributeUpdates</i> element consists of an attribute name to modify, along with the following: <ul> <li> <i>Value</i> - The new value, if applicable, for this attribute. </li> <li> <i>Action</i> - A value that specifies how to perform the update. This action is only valid for an existing attribute whose data type is Number or is a set; do not use <code>ADD</code> for other data types. If an item with the specified primary key is found in the table, the following values perform the following actions: <ul> <li> <code>PUT</code> - Adds the specified attribute to the item. If the attribute already exists, it is replaced by the new value. </li> <li> <code>DELETE</code> - Removes the attribute and its value, if no value is specified for <code>DELETE</code>. The data type of the specified value must match the existing value's data type. If a set of values is specified, then those values are subtracted from the old set. For example, if the attribute value was the set <code>[a,b,c]</code> and the <code>DELETE</code> action specifies <code>[a,c]</code>, then the final attribute value is <code>[b]</code>. Specifying an empty set is an error. </li> <li> <code>ADD</code> - Adds the specified value to the item, if the attribute does not already exist. If the attribute does exist, then the behavior of <code>ADD</code> depends on the data type of the attribute: <ul> <li> If the existing attribute is a number, and if <i>Value</i> is also a number, then <i>Value</i> is mathematically added to the existing attribute. If <i>Value</i> is a negative number, then it is subtracted from the existing attribute. <note> If you use <code>ADD</code> to increment or decrement a number value for an item that doesn't exist before the update, DynamoDB uses 0 as the initial value. Similarly, if you use <code>ADD</code> for an existing item to increment or decrement an attribute value that doesn't exist before the update, DynamoDB uses <code>0</code> as the initial value. For example, suppose that the item you want to update doesn't have an attribute named <i>itemcount</i>, but you decide to <code>ADD</code> the number <code>3</code> to this attribute anyway. DynamoDB will create the <i>itemcount</i> attribute, set its initial value to <code>0</code>, and finally add <code>3</code> to it. The result will be a new <i>itemcount</i> attribute, with a value of <code>3</code>. </note> </li> <li> If the existing data type is a set, and if <i>Value</i> is also a set, then <i>Value</i> is appended to the existing set. For example, if the attribute value is the set <code>[1,2]</code>, and the <code>ADD</code> action specified <code>[3]</code>, then the final attribute value is <code>[1,2,3]</code>. An error occurs if an <code>ADD</code> action is specified for a set attribute and the attribute type specified does not match the existing set type. Both sets must have the same primitive data type. For example, if the existing data type is a set of strings, <i>Value</i> must also be a set of strings. </li> </ul> </li> </ul> If no item with the specified key is found in the table, the following values perform the following actions: <ul> <li> <code>PUT</code> - Causes DynamoDB to create a new item with the specified primary key, and then adds the attribute. </li> <li> <code>DELETE</code> - Nothing happens, because attributes cannot be deleted from a nonexistent item. The operation succeeds, but DynamoDB does not create a new item. </li> <li> <code>ADD</code> - Causes DynamoDB to create an item with the supplied primary key and number (or set of numbers) for the attribute value. The only data types allowed are Number and Number Set. </li> </ul> </li> </ul> If you provide any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition.</param>
/// <param name="returnValues">Use <i>ReturnValues</i> if you want to get the item attributes as they appeared either before or after they were updated. For <i>UpdateItem</i>, the valid values are: <ul> <li> <code>NONE</code> - If <i>ReturnValues</i> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <i>ReturnValues</i>.) </li> <li> <code>ALL_OLD</code> - If <i>UpdateItem</i> overwrote an attribute name-value pair, then the content of the old item is returned. </li> <li> <code>UPDATED_OLD</code> - The old versions of only the updated attributes are returned. </li> <li> <code>ALL_NEW</code> - All of the attributes of the new version of the item are returned. </li> <li> <code>UPDATED_NEW</code> - The new versions of only the updated attributes are returned. </li> </ul></param>
///
/// <returns>The response from the UpdateItem service method, as returned by DynamoDB.</returns>
/// <exception cref="Amazon.DynamoDBv2.Model.ConditionalCheckFailedException">
/// A condition specified in the operation could not be evaluated.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.InternalServerErrorException">
/// An error occurred on the server side.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ItemCollectionSizeLimitExceededException">
/// An item collection is too large. This exception is only returned for tables that have
/// one or more local secondary indexes.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ProvisionedThroughputExceededException">
/// The request rate is too high, or the request is too large, for the available throughput
/// to accommodate. The AWS SDKs automatically retry requests that receive this exception;
/// therefore, your request will eventually succeed, unless the request is too large or
/// your retry queue is too large to finish. Reduce the frequency of requests by using
/// the strategies listed in <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries">Error
/// Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ResourceNotFoundException">
/// The operation tried to access a nonexistent table or index. The resource might not
/// be specified correctly, or its status might not be <code>ACTIVE</code>.
/// </exception>
public void UpdateItemAsync(string tableName, Dictionary<string, AttributeValue> key, Dictionary<string, AttributeValueUpdate> attributeUpdates, ReturnValue returnValues, AmazonServiceCallback<UpdateItemRequest, UpdateItemResponse> callback, AsyncOptions options = null)
{
var request = new UpdateItemRequest();
request.TableName = tableName;
request.Key = key;
request.AttributeUpdates = attributeUpdates;
request.ReturnValues = returnValues;
UpdateItemAsync(request, callback, options);
}
/// <summary>
/// Creates a new item, or replaces an old item with a new item. If an item that has the
/// same primary key as the new item already exists in the specified table, the new item
/// completely replaces the existing item. You can perform a conditional put operation
/// (add a new item if one with the specified primary key doesn't exist), or replace an
/// existing item if it has certain attribute values.
///
///
/// <para>
/// In addition to putting an item, you can also return the item's attribute values in
/// the same operation, using the <i>ReturnValues</i> parameter.
/// </para>
///
/// <para>
/// When you add an item, the primary key attribute(s) are the only required attributes.
/// Attribute values cannot be null. String and Binary type attributes must have lengths
/// greater than zero. Set type attributes cannot be empty. Requests with empty values
/// will be rejected with a <i>ValidationException</i> exception.
/// </para>
///
/// <para>
/// You can request that <i>PutItem</i> return either a copy of the original item (before
/// the update) or a copy of the updated item (after the update). For more information,
/// see the <i>ReturnValues</i> description below.
/// </para>
/// <note>
/// <para>
/// To prevent a new item from replacing an existing item, use a conditional put operation
/// with <i>ComparisonOperator</i> set to <code>NULL</code> for the primary key attribute,
/// or attributes.
/// </para>
/// </note>
/// <para>
/// For more information about using this API, see <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithItems.html">Working
/// with Items</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </para>
/// </summary>
/// <param name="tableName">The name of the table to contain the item.</param>
/// <param name="item">A map of attribute name/value pairs, one for each attribute. Only the primary key attributes are required; you can optionally provide other attribute name-value pairs for the item. You must provide all of the attributes for the primary key. For example, with a hash type primary key, you only need to provide the hash attribute. For a hash-and-range type primary key, you must provide both the hash attribute and the range attribute. If you specify any attributes that are part of an index key, then the data types for those attributes must match those of the schema in the table's attribute definition. For more information about primary keys, see <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html#DataModelPrimaryKey">Primary Key</a> in the <i>Amazon DynamoDB Developer Guide</i>. Each element in the <i>Item</i> map is an <i>AttributeValue</i> object.</param>
/// <param name="returnValues">Use <i>ReturnValues</i> if you want to get the item attributes as they appeared before they were updated with the <i>PutItem</i> request. For <i>PutItem</i>, the valid values are: <ul> <li> <code>NONE</code> - If <i>ReturnValues</i> is not specified, or if its value is <code>NONE</code>, then nothing is returned. (This setting is the default for <i>ReturnValues</i>.) </li> <li> <code>ALL_OLD</code> - If <i>PutItem</i> overwrote an attribute name-value pair, then the content of the old item is returned. </li> </ul></param>
///
/// <returns>The response from the PutItem service method, as returned by DynamoDB.</returns>
/// <exception cref="Amazon.DynamoDBv2.Model.ConditionalCheckFailedException">
/// A condition specified in the operation could not be evaluated.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.InternalServerErrorException">
/// An error occurred on the server side.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ItemCollectionSizeLimitExceededException">
/// An item collection is too large. This exception is only returned for tables that have
/// one or more local secondary indexes.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ProvisionedThroughputExceededException">
/// The request rate is too high, or the request is too large, for the available throughput
/// to accommodate. The AWS SDKs automatically retry requests that receive this exception;
/// therefore, your request will eventually succeed, unless the request is too large or
/// your retry queue is too large to finish. Reduce the frequency of requests by using
/// the strategies listed in <a href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries">Error
/// Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
/// </exception>
/// <exception cref="Amazon.DynamoDBv2.Model.ResourceNotFoundException">
/// The operation tried to access a nonexistent table or index. The resource might not
/// be specified correctly, or its status might not be <code>ACTIVE</code>.
/// </exception>
public void PutItemAsync(string tableName, Dictionary<string, AttributeValue> item, ReturnValue returnValues, AmazonServiceCallback<PutItemRequest, PutItemResponse> callback, AsyncOptions options = null)
{
var request = new PutItemRequest();
request.TableName = tableName;
request.Item = item;
request.ReturnValues = returnValues;
PutItemAsync(request, callback, options);
}