Platform Core .NET Assemblies API
CreateIsNullFunction Method
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Terrasoft.Core.Entities Namespace > EntitySchemaQuery Class : CreateIsNullFunction Method

checkColumnPath: Path to column that contains the value to check.

replacementColumnPath: Path to column that contains the value returned by the function if the value to check is equal to null.

Gets the instance of the EntitySchemaIsNullQueryFunction function for columns with values to check and substitute in paths specified in relation to the root schema.

Syntax

public EntitySchemaIsNullQueryFunction CreateIsNullFunction( 
   System.string checkColumnPath,
   System.string replacementColumnPath
)

Parameters

checkColumnPath: Path to column that contains the value to check.
replacementColumnPath: Path to column that contains the value returned by the function if the value to check is equal to null.

Return Value

The instance of the created EntitySchemaIsNullQueryFunction function.

Exceptions

Exception	Description
Terrasoft.Common.ArgumentNullOrEmptyException	If the empty value or `null` value is passed as either the checkColumnPath or the replacementColumnPath parameter.

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Syntax

Parameters

Return Value

Exceptions

Requirements

See Also

Reference