Paws::DynamoDB::PutItem - Arguments for method PutItem on Paws::DynamoDB


This class represents the parameters used for calling the method PutItem on the Amazon DynamoDB service. Use the attributes of this class as arguments to method PutItem.

You shouldn't make instances of this class. Each attribute should be used as a named argument in the call to PutItem.


    my $dynamodb = Paws->service('DynamoDB');
    # To add an item to a table
    # This example adds a new item to the Music table.
    my $PutItemOutput = $dynamodb->PutItem(
        'Item' => {
          'AlbumTitle' => {
            'S' => 'Somewhat Famous'
          'Artist' => {
            'S' => 'No One You Know'
          'SongTitle' => {
            'S' => 'Call Me Today'
        'ReturnConsumedCapacity' => 'TOTAL',
        'TableName'              => 'Music'

    # Results:
    my $ConsumedCapacity = $PutItemOutput->ConsumedCapacity;

    # Returns a L<Paws::DynamoDB::PutItemOutput> object.

Values for attributes that are native types (Int, String, Float, etc) can passed as-is (scalar values). Values for complex Types (objects) can be passed as a HashRef. The keys and values of the hashref will be used to instance the underlying object. For the AWS API documentation, see


ConditionalOperator => Str

This is a legacy parameter. Use ConditionExpression instead. For more information, see ConditionalOperator ( in the Amazon DynamoDB Developer Guide.

Valid values are: "AND", "OR"

ConditionExpression => Str

A condition that must be satisfied in order for a conditional PutItem operation to succeed.

An expression can contain any of the following:

  • Functions: attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size

    These function names are case-sensitive.

  • Comparison operators: = | <> | < | > | <= | >= | BETWEEN | IN

  • Logical operators: AND | OR | NOT

For more information on condition expressions, see Specifying Conditions ( in the Amazon DynamoDB Developer Guide.

Expected => Paws::DynamoDB::ExpectedAttributeMap

This is a legacy parameter. Use ConditionExpression instead. For more information, see Expected ( in the Amazon DynamoDB Developer Guide.

ExpressionAttributeNames => Paws::DynamoDB::ExpressionAttributeNameMap

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:

  • Percentile

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:

  • {"#P":"Percentile"}

You could then use this substitution in an expression, as in this example:

  • #P = :val

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 Accessing Item Attributes ( in the Amazon DynamoDB Developer Guide.

ExpressionAttributeValues => Paws::DynamoDB::ExpressionAttributeValueMap

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 | Discontinued

You 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 Specifying Conditions ( in the Amazon DynamoDB Developer Guide.

REQUIRED Item => Paws::DynamoDB::PutItemInputAttributeMap

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 simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide both values for both the partition key and the sort key.

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 Primary Key ( in the Amazon DynamoDB Developer Guide.

Each element in the Item map is an AttributeValue object.

ReturnConsumedCapacity => Str

Valid values are: "INDEXES", "TOTAL", "NONE"

ReturnItemCollectionMetrics => Str

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.

Valid values are: "SIZE", "NONE"

ReturnValues => Str

Use ReturnValues if you want to get the item attributes as they appeared before they were updated with the PutItem request. For PutItem, 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 - If PutItem overwrote an attribute name-value pair, then the content of the old item is returned.

The ReturnValues parameter is used by several DynamoDB operations; however, PutItem does not recognize any values other than NONE or ALL_OLD.

Valid values are: "NONE", "ALL_OLD", "UPDATED_OLD", "ALL_NEW", "UPDATED_NEW"

REQUIRED TableName => Str

The name of the table to contain the item.


This class forms part of Paws, documenting arguments for method PutItem in Paws::DynamoDB


The source code is located here:

Please report bugs to: