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Interface Provider class : IP methods reference : ipExecute
 

ipExecute

This method is called with iStmtType set to the operation to perform. The connection handle, statement handle, and search column handle are passed in.
When working in row-based mode, the search column is used to determine if a search condition for a column is passed to the IP. The IP should then use this condition to read only the rows that match the specified index value(s). The search column handle that is passed can be part of a single column index or a multi-column index. If the IP is interested in multi-column indexes, it should call dam_getOptimalIndexAndConditions.
For UPDATE, DELETE, and INSERT statements, the IP should maintain a counter for the number of rows affected and return it through the iNumResRows object that is passed in.
int ipExecute(
int64 hstmt,
int iStmtType,
int64 hSearchCol,
out long piNumResRows)
 
Table 7: Parameters for ipExecute 
Parameter
Type
Description
IN
 
 
hstmt
int64
Handle to the statement being executed.
iStmtType
int
The type of the statement:
DAM_SELECT – select
DAM_UPDATE – update
DAM_INSERT – insert
DAM_DELETE – delete
DAM_SELECT_FOR_UPDATE – lock selected rows
DAM_FETCH – called to process additional rows in the case of a select
DAM_CLOSE – called to close the current select processing
DAM_START_QUERY – called to mark the beginning of a multiple sub-query execution sequence on the same table.
DAM_END_QUERY – called to mark the end of a multiple sub-query execution sequence on the same table.
DAM_SET_QUERY_MODE – called to allow the IP to determine whether to work in row-based or SQL pass-through mode.
hSearchCol
int64
The handle to the column that has the search list to optimize the IP. If this is non-zero then it must be used. It will be non-zero if the column has an index on it and the IP has reported that it supports equality and other comparison operators used in the search condition. Use the dam_getOptimalIndexAndConditions method to get the associated search list.
This parameter is not applicable when working in SQL pass-through mode.
piNumResRows
long
Number of rows effected by a INSERT, UPDATE, or DELETE statement execution.
RETURN
 
 
 
int
DAM_SUCCESS – on success
DAM_FAILURE – on failure
DAM_SUCCESS_WITH_RESULT_PENDING – when the IP is processing partial results sets in cursor mode
 

See also 

• dam_getOptimalIndexAndConditions