/*******************************************************************************
* Copyright 2012-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License"). You may not use
* this file except in compliance with the License. A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file.
* This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
* *****************************************************************************
*
* AWS Tools for Windows (TM) PowerShell (TM)
*
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Management.Automation;
using System.Text;
using Amazon.PowerShell.Common;
using Amazon.Runtime;
using Amazon.DynamoDBv2;
using Amazon.DynamoDBv2.Model;
namespace Amazon.PowerShell.Cmdlets.DDB
{
///
/// 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.
///
///
///
/// In addition to deleting an item, you can also return the item's attribute values in
/// the same operation, using the ReturnValues parameter.
///
/// Unless you specify conditions, the DeleteItem is an idempotent operation;
/// running it multiple times on the same item or attribute does not result in
/// an error response.
///
/// 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.
///
///
[Cmdlet("Remove", "DDBItem", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.High)]
[OutputType("System.String")]
[AWSCmdlet("Calls the Amazon DynamoDB DeleteItem API operation.", Operation = new[] {"DeleteItem"}, SelectReturnType = typeof(Amazon.DynamoDBv2.Model.DeleteItemResponse))]
[AWSCmdletOutput("System.String or Amazon.DynamoDBv2.Model.DeleteItemResponse",
"This cmdlet returns a collection of System.String objects.",
"The service call response (type Amazon.DynamoDBv2.Model.DeleteItemResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack."
)]
public partial class RemoveDDBItemCmdlet : AmazonDynamoDBClientCmdlet, IExecutor
{
#region Parameter ConditionalOperator
///
///
/// This is a legacy parameter. Use ConditionExpression instead. For more
/// information, see ConditionalOperator
/// in the Amazon DynamoDB Developer Guide.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
[AWSConstantClassSource("Amazon.DynamoDBv2.ConditionalOperator")]
public Amazon.DynamoDBv2.ConditionalOperator ConditionalOperator { get; set; }
#endregion
#region Parameter ConditionExpression
///
///
/// A condition that must be satisfied in order for a conditional DeleteItem
/// to succeed.An expression can contain any of the following:- Functions:
attribute_exists | attribute_not_exists | attribute_type | contains
/// | begins_with | sizeThese function names are case-sensitive. - Comparison operators:
= | <> | < | > | <= | >= | BETWEEN |
/// IN - Logical operators:
AND | OR | NOT
For more information about condition expressions, see Condition
/// Expressions in the Amazon DynamoDB Developer Guide.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
public System.String ConditionExpression { get; set; }
#endregion
#region Parameter Expected
///
///
/// This is a legacy parameter. Use ConditionExpression instead. For more
/// information, see Expected
/// in the Amazon DynamoDB Developer Guide.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
public System.Collections.Hashtable Expected { get; set; }
#endregion
#region Parameter ExpressionAttributeName
///
///
/// One or more substitution tokens for attribute names in an expression. The following
/// are some use cases for using ExpressionAttributeNames:- To access an attribute whose name conflicts with a DynamoDB reserved word.
- To create a placeholder for repeating occurrences of an attribute name in an expression.
- To prevent special characters in an attribute name from being misinterpreted in an
/// expression.
Use the # character in an expression to dereference an attribute name. For
/// example, consider the following attribute name:The name of this attribute conflicts with a reserved word, so it cannot be used directly
/// in an expression. (For the complete list of reserved words, see Reserved
/// Words in the Amazon DynamoDB Developer Guide). To work around this, you
/// could specify the following for ExpressionAttributeNames:You could then use this substitution in an expression, as in this example:Tokens that begin with the : character are expression attribute values,
/// which are placeholders for the actual value at runtime.For more information on expression attribute names, see Specifying
/// Item Attributes in the Amazon DynamoDB Developer Guide.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
[Alias("ExpressionAttributeNames")]
public System.Collections.Hashtable ExpressionAttributeName { get; set; }
#endregion
#region Parameter ExpressionAttributeValue
///
///
/// One or more values that can be substituted in an expression.Use the : (colon) character in an expression to dereference an attribute value.
/// For example, suppose that you wanted to check whether the value of the ProductStatus
/// attribute was one of the following: Available | Backordered | DiscontinuedYou would first need to specify ExpressionAttributeValues as follows:{ ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"}
/// }You could then use these values in an expression, such as this:ProductStatus IN (:avail, :back, :disc)For more information on expression attribute values, see Condition
/// Expressions in the Amazon DynamoDB Developer Guide.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
[Alias("ExpressionAttributeValues")]
public System.Collections.Hashtable ExpressionAttributeValue { get; set; }
#endregion
#region Parameter Key
///
///
/// A map of attribute names to AttributeValue objects, representing the
/// primary key of the item to delete.For the primary key, you must provide all of the key attributes. For example, with
/// a simple primary key, you only need to provide a value for the partition key. For
/// a composite primary key, you must provide values for both the partition key and the
/// sort key.
///
///
#if !MODULAR
[System.Management.Automation.Parameter(Position = 0, ValueFromPipelineByPropertyName = true, ValueFromPipeline = true)]
#else
[System.Management.Automation.Parameter(Position = 0, ValueFromPipelineByPropertyName = true, ValueFromPipeline = true, Mandatory = true)]
[System.Management.Automation.AllowEmptyCollection]
[System.Management.Automation.AllowNull]
#endif
[Amazon.PowerShell.Common.AWSRequiredParameter]
public System.Collections.Hashtable Key { get; set; }
#endregion
#region Parameter ReturnConsumedCapacity
///
///
/// The service has not provided documentation for this parameter; please refer to the service's API reference documentation for the latest available information.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
[AWSConstantClassSource("Amazon.DynamoDBv2.ReturnConsumedCapacity")]
public Amazon.DynamoDBv2.ReturnConsumedCapacity ReturnConsumedCapacity { get; set; }
#endregion
#region Parameter ReturnItemCollectionMetric
///
///
/// Determines whether item collection metrics are returned. If set to SIZE,
/// the response includes statistics about item collections, if any, that were modified
/// during the operation are returned in the response. If set to NONE (the
/// default), no statistics are returned.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
[Alias("ReturnItemCollectionMetrics")]
[AWSConstantClassSource("Amazon.DynamoDBv2.ReturnItemCollectionMetrics")]
public Amazon.DynamoDBv2.ReturnItemCollectionMetrics ReturnItemCollectionMetric { get; set; }
#endregion
#region Parameter ReturnValue
///
///
/// Use ReturnValues if you want to get the item attributes as they appeared
/// before they were deleted. For DeleteItem, the valid values are:NONE - If ReturnValues is not specified, or if its value
/// is NONE, then nothing is returned. (This setting is the default for ReturnValues.)ALL_OLD - The content of the old item is returned.
There is no additional cost associated with requesting a return value aside from the
/// small network and processing overhead of receiving a larger response. No read capacity
/// units are consumed.The ReturnValues parameter is used by several DynamoDB operations; however,
/// DeleteItem does not recognize any values other than NONE
/// or ALL_OLD.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
[Alias("ReturnValues")]
[AWSConstantClassSource("Amazon.DynamoDBv2.ReturnValue")]
public Amazon.DynamoDBv2.ReturnValue ReturnValue { get; set; }
#endregion
#region Parameter ReturnValuesOnConditionCheckFailure
///
///
/// An optional parameter that returns the item attributes for a DeleteItem
/// operation that failed a condition check.There is no additional cost associated with requesting a return value aside from the
/// small network and processing overhead of receiving a larger response. No read capacity
/// units are consumed.
///
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
[AWSConstantClassSource("Amazon.DynamoDBv2.ReturnValuesOnConditionCheckFailure")]
public Amazon.DynamoDBv2.ReturnValuesOnConditionCheckFailure ReturnValuesOnConditionCheckFailure { get; set; }
#endregion
#region Parameter TableName
///
///
/// The name of the table from which to delete the item.
///
///
#if !MODULAR
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
#else
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true, Mandatory = true)]
[System.Management.Automation.AllowEmptyString]
[System.Management.Automation.AllowNull]
#endif
[Amazon.PowerShell.Common.AWSRequiredParameter]
public System.String TableName { get; set; }
#endregion
#region Parameter Select
///
/// Use the -Select parameter to control the cmdlet output. The default value is 'Attributes'.
/// Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.DynamoDBv2.Model.DeleteItemResponse).
/// Specifying the name of a property of type Amazon.DynamoDBv2.Model.DeleteItemResponse will result in that property being returned.
/// Specifying -Select '^ParameterName' will result in the cmdlet returning the selected cmdlet parameter value.
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
public string Select { get; set; } = "Attributes";
#endregion
#region Parameter PassThru
///
/// Changes the cmdlet behavior to return the value passed to the Key parameter.
/// The -PassThru parameter is deprecated, use -Select '^Key' instead. This parameter will be removed in a future version.
///
[System.Obsolete("The -PassThru parameter is deprecated, use -Select '^Key' instead. This parameter will be removed in a future version.")]
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
public SwitchParameter PassThru { get; set; }
#endregion
#region Parameter Force
///
/// This parameter overrides confirmation prompts to force
/// the cmdlet to continue its operation. This parameter should always
/// be used with caution.
///
[System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
public SwitchParameter Force { get; set; }
#endregion
protected override void ProcessRecord()
{
this._AWSSignerType = "v4";
base.ProcessRecord();
var resourceIdentifiersText = FormatParameterValuesForConfirmationMsg(nameof(this.TableName), MyInvocation.BoundParameters);
if (!ConfirmShouldProceed(this.Force.IsPresent, resourceIdentifiersText, "Remove-DDBItem (DeleteItem)"))
{
return;
}
var context = new CmdletContext();
// allow for manipulation of parameters prior to loading into context
PreExecutionContextLoad(context);
#pragma warning disable CS0618, CS0612 //A class member was marked with the Obsolete attribute
if (ParameterWasBound(nameof(this.Select)))
{
context.Select = CreateSelectDelegate(Select) ??
throw new System.ArgumentException("Invalid value for -Select parameter.", nameof(this.Select));
if (this.PassThru.IsPresent)
{
throw new System.ArgumentException("-PassThru cannot be used when -Select is specified.", nameof(this.Select));
}
}
else if (this.PassThru.IsPresent)
{
context.Select = (response, cmdlet) => this.Key;
}
#pragma warning restore CS0618, CS0612 //A class member was marked with the Obsolete attribute
context.ConditionalOperator = this.ConditionalOperator;
context.ConditionExpression = this.ConditionExpression;
if (this.Expected != null)
{
context.Expected = new Dictionary(StringComparer.Ordinal);
foreach (var hashKey in this.Expected.Keys)
{
context.Expected.Add((String)hashKey, (ExpectedAttributeValue)(this.Expected[hashKey]));
}
}
if (this.ExpressionAttributeName != null)
{
context.ExpressionAttributeName = new Dictionary(StringComparer.Ordinal);
foreach (var hashKey in this.ExpressionAttributeName.Keys)
{
context.ExpressionAttributeName.Add((String)hashKey, (String)(this.ExpressionAttributeName[hashKey]));
}
}
if (this.ExpressionAttributeValue != null)
{
context.ExpressionAttributeValue = new Dictionary(StringComparer.Ordinal);
foreach (var hashKey in this.ExpressionAttributeValue.Keys)
{
context.ExpressionAttributeValue.Add((String)hashKey, (AttributeValue)(this.ExpressionAttributeValue[hashKey]));
}
}
if (this.Key != null)
{
context.Key = new Dictionary(StringComparer.Ordinal);
foreach (var hashKey in this.Key.Keys)
{
context.Key.Add((String)hashKey, (AttributeValue)(this.Key[hashKey]));
}
}
#if MODULAR
if (this.Key == null && ParameterWasBound(nameof(this.Key)))
{
WriteWarning("You are passing $null as a value for parameter Key which is marked as required. In case you believe this parameter was incorrectly marked as required, report this by opening an issue at https://github.com/aws/aws-tools-for-powershell/issues.");
}
#endif
context.ReturnConsumedCapacity = this.ReturnConsumedCapacity;
context.ReturnItemCollectionMetric = this.ReturnItemCollectionMetric;
context.ReturnValue = this.ReturnValue;
context.ReturnValuesOnConditionCheckFailure = this.ReturnValuesOnConditionCheckFailure;
context.TableName = this.TableName;
#if MODULAR
if (this.TableName == null && ParameterWasBound(nameof(this.TableName)))
{
WriteWarning("You are passing $null as a value for parameter TableName which is marked as required. In case you believe this parameter was incorrectly marked as required, report this by opening an issue at https://github.com/aws/aws-tools-for-powershell/issues.");
}
#endif
// allow further manipulation of loaded context prior to processing
PostExecutionContextLoad(context);
var output = Execute(context) as CmdletOutput;
ProcessOutput(output);
}
#region IExecutor Members
public object Execute(ExecutorContext context)
{
var cmdletContext = context as CmdletContext;
// create request
var request = new Amazon.DynamoDBv2.Model.DeleteItemRequest();
if (cmdletContext.ConditionalOperator != null)
{
request.ConditionalOperator = cmdletContext.ConditionalOperator;
}
if (cmdletContext.ConditionExpression != null)
{
request.ConditionExpression = cmdletContext.ConditionExpression;
}
if (cmdletContext.Expected != null)
{
request.Expected = cmdletContext.Expected;
}
if (cmdletContext.ExpressionAttributeName != null)
{
request.ExpressionAttributeNames = cmdletContext.ExpressionAttributeName;
}
if (cmdletContext.ExpressionAttributeValue != null)
{
request.ExpressionAttributeValues = cmdletContext.ExpressionAttributeValue;
}
if (cmdletContext.Key != null)
{
request.Key = cmdletContext.Key;
}
if (cmdletContext.ReturnConsumedCapacity != null)
{
request.ReturnConsumedCapacity = cmdletContext.ReturnConsumedCapacity;
}
if (cmdletContext.ReturnItemCollectionMetric != null)
{
request.ReturnItemCollectionMetrics = cmdletContext.ReturnItemCollectionMetric;
}
if (cmdletContext.ReturnValue != null)
{
request.ReturnValues = cmdletContext.ReturnValue;
}
if (cmdletContext.ReturnValuesOnConditionCheckFailure != null)
{
request.ReturnValuesOnConditionCheckFailure = cmdletContext.ReturnValuesOnConditionCheckFailure;
}
if (cmdletContext.TableName != null)
{
request.TableName = cmdletContext.TableName;
}
CmdletOutput output;
// issue call
var client = Client ?? CreateClient(_CurrentCredentials, _RegionEndpoint);
try
{
var response = CallAWSServiceOperation(client, request);
object pipelineOutput = null;
pipelineOutput = cmdletContext.Select(response, this);
output = new CmdletOutput
{
PipelineOutput = pipelineOutput,
ServiceResponse = response
};
}
catch (Exception e)
{
output = new CmdletOutput { ErrorResponse = e };
}
return output;
}
public ExecutorContext CreateContext()
{
return new CmdletContext();
}
#endregion
#region AWS Service Operation Call
private Amazon.DynamoDBv2.Model.DeleteItemResponse CallAWSServiceOperation(IAmazonDynamoDB client, Amazon.DynamoDBv2.Model.DeleteItemRequest request)
{
Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Amazon DynamoDB", "DeleteItem");
try
{
#if DESKTOP
return client.DeleteItem(request);
#elif CORECLR
return client.DeleteItemAsync(request).GetAwaiter().GetResult();
#else
#error "Unknown build edition"
#endif
}
catch (AmazonServiceException exc)
{
var webException = exc.InnerException as System.Net.WebException;
if (webException != null)
{
throw new Exception(Utils.Common.FormatNameResolutionFailureMessage(client.Config, webException.Message), webException);
}
throw;
}
}
#endregion
internal partial class CmdletContext : ExecutorContext
{
public Amazon.DynamoDBv2.ConditionalOperator ConditionalOperator { get; set; }
public System.String ConditionExpression { get; set; }
public Dictionary Expected { get; set; }
public Dictionary ExpressionAttributeName { get; set; }
public Dictionary ExpressionAttributeValue { get; set; }
public Dictionary Key { get; set; }
public Amazon.DynamoDBv2.ReturnConsumedCapacity ReturnConsumedCapacity { get; set; }
public Amazon.DynamoDBv2.ReturnItemCollectionMetrics ReturnItemCollectionMetric { get; set; }
public Amazon.DynamoDBv2.ReturnValue ReturnValue { get; set; }
public Amazon.DynamoDBv2.ReturnValuesOnConditionCheckFailure ReturnValuesOnConditionCheckFailure { get; set; }
public System.String TableName { get; set; }
public System.Func Select { get; set; } =
(response, cmdlet) => response.Attributes;
}
}
}