Reads a portion of a LOB/FILE, as specified by the call.
Ora8.bdh
Ora8LobRead( in hSvcCtx : number, in hLobLoc : number, in nSizeOfPieces : number, in nSizeToRead : number, in nStartOffset : number, in nCharsetID : number optional, in nCharsetForm : number optional, out nCntRead : number optional ) : boolean;
true if successful
false otherwise.
Parameter | Description |
---|---|
hSvcCtx | The service context handle. |
hLobLoc | A LOB/FILE locator that references the LOB/FILE. |
nSizeOfPieces | Size of pieces to read. |
nSizeToRead | Cumulated size to read. |
nStartOffset | Start offset for first piece. |
nCharsetID | Charset ID (optional). |
nCharsetForm | Charset form (optional). |
nCntRead | Count read (optional). |
var ghEnv0 : number; ghError0 : number; ghStmt0 : number; ghSvcCtx0 : number; ghDescriptor0 : number; dcltrans transaction TMain begin Ora8Init(ghEnv0, OCI_DEFAULT); Ora8HandleAlloc(ghEnv0, ghError0, OCI_HTYPE_ERROR); Ora8Logon(ghEnv0, ghSvcCtx0, "user", "password", "orclnet2"); ... Ora8LobRead(ghSvcCtx0, ghDescriptor0, 500, 30000, 0); ... Ora8Logoff(ghSvcCtx0); Ora8HandleFree(ghError0, OCI_HTYPE_ERROR); Ora8HandleFree(ghEnv0, OCI_HTYPE_ENV); end TMain;