OMBCREATE FUNCTION

Purpose

To create a Function.

Prerequisites

Should be in the context of a Oracle Module or Package or Transformation Module.

A Transformation Module may be WB_CUSTOM_TRANS for Public Transformations.

WB_CUSTOM_TRANS may by modified by an administrator.

WB_CUSTOM_TRANS is not dependent on any project.

Syntax

createFunctionCommand =  OMBCREATE ( FUNCTION "QUOTED_STRING" ( [ SET ( 
          "setPropertiesClause" [ SET "setFunctionCodeTemplateClause" | 
          "setReferenceIconSetClause" ] | "setFunctionCodeTemplateClause" | 
          "setReferenceIconSetClause" ) ] ) { ADD ( "addFuncProcParameterClause"
           | "addRelationalDependentClause" | "addFuncImplementationClause" ) } 
          )
     setPropertiesClause =  PROPERTIES "(" "propertyNameList" ")" VALUES "(" 
          "propertyValueList" ")"
     setFunctionCodeTemplateClause =  ( REFERENCE | REF ) CODE_TEMPLATE 
          "QUOTED_STRING" FOR PLATFORM "QUOTED_STRING" | ( ( REFERENCE | REF ) 
          CODE_TEMPLATE FOR PLATFORM "QUOTED_STRING" OPTIONS "(" 
          "propertyNameList" ")" VALUES "(" "propertyValueList" ")" )
     setReferenceIconSetClause =  ( REFERENCE | REF ) ICONSET "QUOTED_STRING"
     addFuncProcParameterClause =  PARAMETER "QUOTED_STRING" [ SET 
          "setPropertiesClause" ]
     addRelationalDependentClause =  ( REFERENCE | REF ) ( TABLE | VIEW | 
          MATERIALIZED_VIEW | SEQUENCE | FUNCTION | PROCEDURE | PACKAGE ) 
          "QUOTED_STRING"
     addFuncImplementationClause =  FUNCTION_IMPLEMENTATION "QUOTED_STRING" [ 
          SET "setFuncImplPropertiesClause" ]
     propertyNameList =  "UNQUOTED_STRING" { "," "UNQUOTED_STRING" }
     propertyValueList =  "propertyValue" { "," "propertyValue" }
     setFuncImplPropertiesClause =  PROPERTIES "(" "propertyNameList" ")" VALUES
           "(" "propertyValueList" ")"
     propertyValue =  ( "QUOTED_STRING" | "INTEGER_LITERAL" | 
          "FLOATING_POINT_LITERAL" )

Parameters

createFunctionCommand

This command creates a Function

QUOTED_STRING

Name of the Function to be created.

setPropertiesClause

Used to set properties (core, user-defined) for function. Valid properties are shown below:

getPropertiesClause

Basic properties for FUNCTION: 

Name: BUSINESS_NAME
Type: STRING(200)
Valid Values: Any valid character string in supported character set.
Default: Empty string
Business name of the Function 

Name: DESCRIPTION
Type: STRING(4000)
Valid Values: Any valid character string in supported character set.
Default: Empty string
Description of the Function 

Name: RETURN_TYPE
Type: STRING
Valid Values: PLS_INTEGER, BINARY_INTEGER, BOOLEAN, NUMBER, FLOAT, CHAR, VARCHAR, VARCHAR2, DATE
Default: NUMBER
Set the Return Type for Function 

Name: IMPLEMENTATION
Type: STRING
Valid Values: Any valid character string in supported character set.
Default: Empty string
Set the code for Function which is included global variable declaration and code between BEGIN and END. 

Name: IS_DETERMINISTIC
Type: BOOLEAN
Valid Values: true, false
Default: false
This setting helps the optimizer avoid redundant function calls. 

Name: IS_PARALLEL_ENABLE
Type: BOOLEAN
Valid Values: true, false
Default: false
This option sets flag to a stored function can be used safely in the slave sessions of parallel DML evaluations.

Basic properties for PARAMETER:

Name: BUSINESS_NAME
Type: STRING(200)
Valid Values: Any valid character string in supported character set.
Default: Empty string
Business name of the Parameter 

Name: DESCRIPTION
Type: STRING(4000)
Valid Values: Any valid character string in supported character set.
Default: Empty string
Description of the Parameter 

Name: DATATYPE
Type: STRING
Valid Values: BINARY_DOUBLE, BINARY_FLOAT, BINARY_INTEGER, BLOB, BOOLEAN, CHAR, CLOB, DATE, FLOAT, INTEGER, INTERVAL DAY TO SECOND, INTERVAL YEAR TO MONTH, NCHAR, NCLOB, NUMBER, NVARCHAR2, PLS_INTEGER, RAW, TIMESTAMP, TIMESTAMP WITH LOCAL TIME ZONE, TIMESTAMP WITH TIME ZONE, VARHCAR, VARCHAR2, XMLTYPE
Default: NUMBER
Set the data type for Parameter

Name: IN_OUT
Type: STRING
Valid Values: IN, OUT, INOUT
Default: 'IN'
Set the parameter mode for Parameter 

Name: DEFAULT_VALUE
Type: STRING
Valid Values: Any valid character string in supported character set.
Default: Empty string
Set the default value for Parameter

setReferenceIconSetClause

Set reference icon set for function.

addFuncProcParameterClause

Adds one or more Parameters to this Function.

addRelationalDependentClause

This clause adds referential dependencies to other relational objects.

addFuncImplementationClause

Add function implementation for this function.

propertyNameList

Comma separated list of property names. Property names are unquoted.

propertyValueList

Comma separated list of property values.

setFuncImplPropertiesClause

Set function implementation properties.

propertyValue

Value of a property.

FUNCTION Object

Table 7-10 FUNCTION Object

Property	Type	Choices	Min	Max	Default	Description
AUTHID	STRING	, CURRENT_USER, DEFINER	none	none	empty string	Generate the transformation with selected AUTHID option. The function will be executed with the permissions defined by the AUTHID clause instead of the function owner's permissions.
CALLED_ON_NULL_INPUT	STRING	, CALLED ON NULL INPUT	none	none	empty string	Specifies that the function is called regardless of whether any of its arguments are null. It can return a null value or a non-null value.
DEPLOYABLE	BOOLEAN	true, false	none	none	true	Warehouse Builder generates a set of scripts to create an object only for those object marked as Deployable = true
DETERMINISTIC_STATE	STRING	, DETERMINISTIC, NOT DETERMINISTIC	none	none	empty string	Specifies that the function returns the same result every time, for a given set of inputs.
ENCRYPTION	STRING	, ENCRYPTION	none	none	empty string	Specifies whether the function body will be encrypted when the function is created.
EXECUTE_AS	STRING	, EXECUTE AS CALLER, EXECUTE AS OWNER, EXECUTE AS SELF	none	none	empty string	Generate the transformation with selected EXECUTE AS option. Function will be executed with the permissions defined by the EXECUTE AS clause rather than the function owner's permissions.
EXTERNAL_ACTION	STRING	, EXTERNAL ACTION, NO EXTERNAL ACTION	none	none	empty string	Specifies that the function takes some action that changes the state of an object not managed by the database manager, such as reading or writing a file in the OS-managed folders.
GENERATION_COMMENTS	STRING	none	none	none	empty string	Enter additional comments for the generated code.
INHERIT_ISOLATION_LEVEL	STRING	, INHERIT ISOLATION LEVEL WITH LOCK REQUEST, INHERIT ISOLATION LEVEL WITHOUT LOCK REQUEST	none	none	empty string	Specifies whether or not a lock request can be associated with the isolation-clause of the statement when the function inherits the isolation level of the statement that invokes the function. The default is INHERIT ISOLATION LEVEL WITHOUT LOCK REQUEST.
INHERIT_SPECIAL_REGISTERS	STRING	, INHERIT SPECIAL REGISTERS	none	none	empty string	Specifies that the function will inherit all the special registers from the invoking statement.
IS_DETERMINISTIC	STRING	, DETERMINISTIC	none	none	empty string	Optimization hint that specifies that the function returns the same result every time for a given set of arguments. If the function is called with the same arguments multiple times, then the optimizer may re-use the previous result.
IS_PARALLEL_ENABLE	STRING	, PARALLEL_ENABLE	none	none	empty string	Optimization hint, instructing Oracle to execute the function in parallel whenever called from within a SQL query.
LANGUAGE_SQL	STRING	, LANGUAGE SQL	none	none	empty string	This Optional clause indicates that the function is written in SQL PL. This is the default option, to satisfy SQL99 requirements.
PARAMETER_CCSID	STRING	, PARAMETER CCSID ASCII, PARAMETER CCSID UNICODE	none	none	empty string	Specifies the encoding scheme to use for all string data passed into and out of the function. If the PARAMETER CCSID clause is not specified, the default is PARAMETER CCSID UNICODE for Unicode databases, and PARAMETER CCSID ASCII for all other databases.
PRAGMA_AUTONOMOUS_TRANSACTION	STRING	, PRAGMA AUTONOMOUS_TRANSACTION	none	none	empty string	Instructs the PL/SQL compiler to mark the function as independent, which allows the function to suspend the main transaction.
SCHEMABINDING	STRING	, SCHEMABINDING	none	none	empty string	Specifies that the function is bound to the database objects that it references (that is, they cannot be dropped or modified). This condition will prevent changes to the function if other schema-bound objects are referencing it. If a function is created with SCHEMABINDING, then the function is a deterministic function.
SPECIFIC	STRING	none	none	none	empty string	Uniquely identifies a function within the current schema. The specific name can be the same as the function name, and it can be up to 18 characters long. If the SPECIFIC keyword is omitted, then the IBM DB2 UDB Database Manager automatically generates a unique identifier for the function in the format SQLyymmddhhmmssxxx.
SQL_DATA	STRING	, CONTAINS SQL, MODIFIES SQL DATA, READS SQL DATA	none	none	empty string	Specifies what type of SQL statements can be executed by the function. CONTAINS SQL specifies that the function can only execute SQL statements that do not read or modify SQL data. READS SQL DATA specifies that only SQL statements that do not modify SQL data can be executed by the function. MODIFIES SQL DATA specifies that all SQL statements supported in dynamic-compound-statement can be executed by the function.
STATIC_DISPATCH	STRING	, STATIC DISPATCH	none	none	empty string	Specifies that the function is to return the static values of an ARRAY or a user-defined type. Required if you have a non-SQL function that uses an ARRAY or a user-defined type as parameters.
WITH_NULL_INPUT	STRING	, CALLED ON NULL INPUT, RETURNS NULL ON NULL INPUT	none	none	empty string	Specifies that if RETURNS NULL ON NULL INPUT is specified in a CLR function, then SQL Server can return NULL when any of the arguments it receives is NULL, without actually invoking the body of the function. If CALLED ON NULL INPUT is specified, then the function body executes even if NULL is passed as an argument.