14 // SqlDbSession.inl |
14 // SqlDbSession.inl |
15 // |
15 // |
16 // |
16 // |
17 |
17 |
18 /** |
18 /** |
19 |
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20 Sends a request to the SQL server to prepare 16-bit aSqlStmt statement. |
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21 |
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22 Usage of the IPC call arguments: |
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23 Arg 0: [in/out] data buffer for the column and parameter count. |
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24 Arg 1: [out] statement length in characters |
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25 Arg 2: [out] 16-bit statement |
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26 |
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27 @param aDbSession A reference to RSqlDbSession instance. |
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28 @param aSqlStmt 16-bit SQL statement. |
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29 @param aColumnCount Output parameter. Statement column count. |
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30 @param aParamCount Output parameter. Statement parameter count. |
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31 |
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32 @return KErrNoMemory, an out of memory condition has occured; |
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33 KErrArgument, bad argument, for example - the SQL string contains more than one SQL statements. |
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34 Note that the function may leave with some database specific errors categorised as |
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35 ESqlDbError or other system-wide error codes; |
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36 KErrNone The operation has completed successfully. |
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37 |
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38 @panic SqlDb 7 In _DEBUG mode if the statement handle is 0. |
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39 */ |
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40 inline TInt RSqlStatementSession::Prepare(RSqlDbSession& aDbSession, const TDesC& aSqlStmt, |
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41 TInt& aColumnCount, TInt& aParamCount) |
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42 { |
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43 iDbSession = &aDbSession; |
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44 TSqlIpcData data; |
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45 TPckg<TSqlIpcData> pckg(data); |
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46 TUint stmtLen = aSqlStmt.Length(); |
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47 iHandle = iDbSession->SendReceive(ESqlSrvStmtPrepare16, TIpcArgs(&pckg, stmtLen, &aSqlStmt)); |
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48 __SQLASSERT(iHandle != 0, ESqlPanicInternalError); |
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49 aColumnCount = static_cast <TInt> (data.iPrm1); |
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50 aParamCount = static_cast <TInt> (data.iPrm2); |
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51 return iHandle > 0 ? KErrNone : iHandle; |
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52 } |
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53 |
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54 /** |
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55 Sends a request to the SQL server to prepare 8-bit aSqlStmt statement. |
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56 |
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57 Usage of the IPC call arguments: |
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58 Arg 0: [in/out] data buffer for the column and parameter count. |
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59 Arg 1: [out] statement length in characters |
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60 Arg 2: [out] 8-bit statement |
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61 |
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62 @param aDbSession A reference to RSqlDbSession instance. |
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63 @param aSqlStmt 8-bit SQL statement. |
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64 @param aColumnCount Output parameter. Statement column count. |
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65 @param aParamCount Output parameter. Statement parameter count. |
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66 |
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67 @return KErrNoMemory, an out of memory condition has occured; |
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68 KErrArgument, bad argument, for example - the SQL string contains more than one SQL statements. |
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69 Note that the function may leave with some database specific errors categorised as |
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70 ESqlDbError or other system-wide error codes; |
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71 KErrNone The operation has completed successfully. |
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72 |
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73 @panic SqlDb 7 In _DEBUG mode if the statement handle is 0. |
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74 */ |
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75 inline TInt RSqlStatementSession::Prepare(RSqlDbSession& aDbSession, const TDesC8& aSqlStmt, |
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76 TInt& aColumnCount, TInt& aParamCount) |
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77 { |
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78 iDbSession = &aDbSession; |
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79 TSqlIpcData data; |
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80 TPckg<TSqlIpcData> pckg(data); |
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81 TUint stmtLen = aSqlStmt.Length(); |
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82 iHandle = iDbSession->SendReceive(ESqlSrvStmtPrepare8, TIpcArgs(&pckg, stmtLen, &aSqlStmt)); |
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83 __SQLASSERT(iHandle != 0, ESqlPanicInternalError); |
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84 aColumnCount = static_cast <TInt> (data.iPrm1); |
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85 aParamCount = static_cast <TInt> (data.iPrm2); |
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86 return iHandle > 0 ? KErrNone : iHandle; |
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87 } |
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88 |
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89 /** |
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90 @panic SqlDb 2 In _DEBUG mode if the statement handle is 0 or the database session is NULL, |
19 @panic SqlDb 2 In _DEBUG mode if the statement handle is 0 or the database session is NULL, |
91 i.e. Prepare() has not yet been called on this RSqlStatementSession object. |
20 i.e. Prepare() has not yet been called on this RSqlStatementSession object. |
92 |
21 |
93 @return A reference to the RSqlDbSession instance. |
22 @return A reference to the RSqlDbSession instance. |
94 */ |
23 */ |
95 inline RSqlDbSession& RSqlStatementSession::DbSession() const |
24 inline RSqlDbSession& RSqlStatementSession::DbSession() const |
96 { |
25 { |
97 __SQLASSERT(iHandle > 0 && iDbSession != NULL, ESqlPanicInvalidObj); |
26 __ASSERT_DEBUG(iHandle > 0 && iDbSession != NULL, __SQLPANIC(ESqlPanicInvalidObj)); |
98 return *iDbSession; |
27 return *iDbSession; |
99 } |
28 } |
100 |
29 |
101 /** |
30 /** |
102 Creates unitialized RSqlStatementSession object. |
31 Creates unitialized RSqlStatementSession object. |