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Parameter
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Type
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Description
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IN
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pMemTree
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XM_Tree *
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The memory tree to use for temporary storage.
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hValExpList
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DAM_HVALEXP_LIST
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The list of arguments as passed into the scalar function.
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hValExp
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DAM_HVALEXP
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The argument for which you want to retrieve the data.
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iXoType
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int
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The data type in which to get the value. It can be XO_TYPE_CHAR,XO_TYPE_WCHAR, the data type used to define the argument, or any data type to which conversion is supported.
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OUT
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ppVal
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void **
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The pointer to the data is returned in this location. The C type of the data corresponds to the iXoType value. See Table 33. Use this pointer only if the *piValLen is not set to XO_NULL_DATA. Do not attempt to free this data.
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piValLen
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int *
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Length of the data pointed to by *ppVal:
 XO_NULL_DATA - null data
XO_NTS - null terminated string
>= 0 - length of the data
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phVal
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DAM_HVAL
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Handle to the temporary value node that is created for returning the data in iXoType format. Call dam_freeVal to free the value node once the data returned in ppVal is used.
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RETURN
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int
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Status of the function call:
DAM_SUCCESS - all data retrieved
DAM_SUCCESS_WITH_RESULT_PENDING - more data is available and should be retrieved by calling this function again. This occurs for large LONGVARBINARY, LONGVARCHAR, and WLONGVARCHAR data.
DAM_FAILURE - error in getting the data. Most likely the data cannot be converted to the XO_Type asked for.
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