| Package | Description | 
|---|---|
| com.amazonaws.services.dynamodbv2.xspec | A request-centric Expression Specification Builder package that can be used to construct valid
 expressions, and the respective name maps and value maps, for various DynamoDB requests in a typeful manner. | 
| Modifier and Type | Method and Description | 
|---|---|
| static <T> FunctionCondition | ExpressionSpecBuilder. attribute_exists(PathOperand pathOperand)Returns a function condition (that evaluates to true if the attribute of the
 specified path operand exists) for building condition expression. | 
| static <T> FunctionCondition | ExpressionSpecBuilder. attribute_exists(String path)Returns a function condition (that evaluates to true if the attribute at the
 specified path exists) for building condition expression. | 
| static FunctionCondition | ExpressionSpecBuilder. attribute_not_exists(PathOperand pathOperand)Returns a function condition (that evaluates to true if the attribute of the
 specified path operand does not exist) for building condition expression. | 
| static FunctionCondition | ExpressionSpecBuilder. attribute_not_exists(String path)Returns a function condition (that evaluates to true if the attribute at the
 specified path does not exist) for building condition expression. | 
| FunctionCondition | S. beginsWith(String value)Returns a function condition (that evaluates to true if the value of the
 current attribute begins with the specified operand) for building
 condition expression. | 
| FunctionCondition | BS. contains(byte[] value)Returns an  FunctionConditionobject which represents an contains(path, operand) function condition where path refers to that
 of the current path operand; used for building expressions. | 
| FunctionCondition | BS. contains(ByteBuffer value)Returns an  FunctionConditionobject which represents an contains(path, operand) function condition where path refers to that
 of the current path operand; used for building expressions. | 
| FunctionCondition | NS. contains(Number value)Returns an  FunctionConditionobject which represents an contains(path, operand) function condition where path refers to that
 of the current path operand; used for building expressions. | 
| FunctionCondition | L. contains(Object value) | 
| FunctionCondition | SS. contains(String value)Returns an  FunctionConditionobject which represents an contains(path, operand) function condition where path refers to that
 of the current path operand; used for building expressions. | 
| FunctionCondition | S. contains(String substring)Returns a function condition (that evaluates to true if the value of the
 current attribute contains the specified substring) for building
 condition expression. | 
| FunctionCondition | PathOperand. exists()Returns a function condition (that evaluates to true if the attribute referred
 to by this path operand exists) for building condition expression. | 
| FunctionCondition | PathOperand. notExists()Returns a function condition (that evaluates to true if the attribute referred
 to by this path operand does not exist) for building condition
 expression. | 
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