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| /*
* tdbc.c --
*
* Basic services for TDBC (Tcl DataBase Connectivity)
*
* Copyright (c) 2008 by Kevin B. Kenny.
*
* Please refer to the file, 'license.terms' for the conditions on
* redistribution of this file and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id$
*
*-----------------------------------------------------------------------------
*/
#include <tcl.h>
#include <string.h>
#include "tdbcInt.h"
/* Static procedures declared in this file */
static int TdbcMapSqlStateObjCmd(ClientData unused, Tcl_Interp* interp,
int objc, Tcl_Obj *const objv[]);
MODULE_SCOPE const TdbcStubs tdbcStubs;
/* Table of commands to create for TDBC */
static const struct TdbcCommand {
const char* name; /* Name of the command */
Tcl_ObjCmdProc* proc; /* Command procedure */
} commandTable[] = {
{ "::tdbc::mapSqlState", TdbcMapSqlStateObjCmd },
{ "::tdbc::tokenize", TdbcTokenizeObjCmd },
{ NULL, NULL },
};
/* Table mapping SQLSTATE to error code */
static const struct SqlStateLookup {
const char* stateclass;
const char* message;
} StateLookup [] = {
{ "00", "UNQUALIFIED_SUCCESSFUL_COMPLETION" },
{ "01", "WARNING" },
{ "02", "NO_DATA" },
{ "07", "DYNAMIC_SQL_ERROR" },
{ "08", "CONNECTION_EXCEPTION" },
{ "09", "TRIGGERED_ACTION_EXCEPTION" },
{ "0A", "FEATURE_NOT_SUPPORTED" },
{ "0B", "INVALID_TRANSACTION_INITIATION" },
{ "0D", "INVALID_TARGET_TYPE_SPECIFICATION" },
{ "0F", "LOCATOR_EXCEPTION" },
{ "0K", "INVALID_RESIGNAL_STATEMENT" },
{ "0L", "INVALID_GRANTOR" },
{ "0P", "INVALID_ROLE_SPECIFICATION" },
{ "0W", "INVALID_STATEMENT_UN_TRIGGER" },
{ "20", "CASE_NOT_FOUND_FOR_CASE_STATEMENT" },
{ "21", "CARDINALITY_VIOLATION" },
{ "22", "DATA_EXCEPTION" },
{ "23", "CONSTRAINT_VIOLATION" },
{ "24", "INVALID_CURSOR_STATE" },
{ "25", "INVALID_TRANSACTION_STATE" },
{ "26", "INVALID_SQL_STATEMENT_IDENTIFIER" },
{ "27", "TRIGGERED_DATA_CHANGE_VIOLATION" },
{ "28", "INVALID_AUTHORIZATION_SPECIFICATION" },
{ "2B", "DEPENDENT_PRIVILEGE_DESCRIPTORS_STILL_EXIST" },
{ "2C", "INVALID_CHARACTER_SET_NAME" },
{ "2D", "INVALID_TRANSACTION_TERMINATION" },
{ "2E", "INVALID_CONNECTION_NAME" },
{ "2F", "SQL_ROUTINE_EXCEPTION" },
{ "33", "INVALID_SQL_DESCRIPTOR_NAME" },
{ "34", "INVALID_CURSOR_NAME" },
{ "35", "INVALID_CONDITION_NUMBER" },
{ "36", "CURSOR_SENSITIVITY_EXCEPTION" },
{ "37", "SYNTAX_ERROR_OR_ACCESS_VIOLATION" },
{ "38", "EXTERNAL_ROUTINE_EXCEPTION" },
{ "39", "EXTERNAL_ROUTINE_INVOCATION_EXCEPTION" },
{ "3B", "SAVEPOINT_EXCEPTION" },
{ "3C", "AMBIGUOUS_CURSOR_NAME" },
{ "3D", "INVALID_CATALOG_NAME" },
{ "3F", "INVALID_SCHEMA_NAME" },
{ "40", "TRANSACTION_ROLLBACK" },
{ "42", "SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION" },
{ "44", "WITH_CHECK_OPTION_VIOLATION" },
{ "45", "UNHANDLED_USER_DEFINED_EXCEPTION" },
{ "46", "JAVA_DDL" },
{ "51", "INVALID_APPLICATION_STATE" },
{ "53", "INSUFFICIENT_RESOURCES" },
{ "54", "PROGRAM_LIMIT_EXCEEDED" },
{ "55", "OBJECT_NOT_IN_PREREQUISITE_STATE" },
{ "56", "MISCELLANEOUS_SQL_OR_PRODUCT_ERROR" },
{ "57", "RESOURCE_NOT_AVAILABLE_OR_OPERATOR_INTERVENTION" },
{ "58", "SYSTEM_ERROR" },
{ "70", "INTERRUPTED" },
{ "F0", "CONFIGURATION_FILE_ERROR" },
{ "HY", "GENERAL_ERROR" },
{ "HZ", "REMOTE_DATABASE_ACCESS_ERROR" },
{ "IM", "DRIVER_ERROR" },
{ "P0", "PGSQL_PLSQL_ERROR" },
{ "S0", "ODBC_2_0_DML_ERROR" },
{ "S1", "ODBC_2_0_GENERAL_ERROR" },
{ "XA", "TRANSACTION_ERROR" },
{ "XX", "INTERNAL_ERROR" },
{ NULL, NULL }
};
/*
*-----------------------------------------------------------------------------
*
* Tdbc_MapSqlState --
*
* Maps the 'sqlstate' return from a database error to a key
* to place in the '::errorCode' variable.
*
* Results:
* Returns the key.
*
* This procedure examines only the first two characters of 'sqlstate',
* which are fairly portable among databases. The remaining three characters
* are ignored. The result is that state '22012' (Division by zero)
* is returned as 'data exception', while state '23505' (Unique key
* constraint violation) is returned as 'constraint violation'.
*
*-----------------------------------------------------------------------------
*/
TDBCAPI const char*
Tdbc_MapSqlState(const char* sqlstate)
{
int i;
for (i = 0; StateLookup[i].stateclass != NULL; ++i) {
if (!strncmp(sqlstate, StateLookup[i].stateclass, 2)) {
return StateLookup[i].message;
}
}
return "UNKNOWN_SQLSTATE";
}
/*
*-----------------------------------------------------------------------------
*
* TdbcMapSqlStateObjCmd --
*
* Command to call from a Tcl script to get a string that describes
* a SQLSTATE
*
* Usage:
* tdbc::mapSqlState state
*
* Parameters:
* state -- A five-character SQLSTATE
*
* Results:
* Returns a one-word token suitable for interpolating into
* errorInfo
*
*-----------------------------------------------------------------------------
*/
static int
TdbcMapSqlStateObjCmd(
ClientData unused, /* No client data */
Tcl_Interp* interp, /* Tcl interpreter */
int objc, /* Parameter count */
Tcl_Obj *const objv[] /* Parameter vector */
) {
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "sqlstate");
return TCL_ERROR;
} else {
const char* sqlstate = Tcl_GetString(objv[1]);
Tcl_SetObjResult(interp, Tcl_NewStringObj(Tdbc_MapSqlState(sqlstate),
-1));
return TCL_OK;
}
}
/*
*-----------------------------------------------------------------------------
*
* Tdbc_Init --
*
* Initializes the TDBC framework when this library is loaded.
*
* Side effects:
*
* Creates a ::tdbc namespace and a ::tdbc::Connection class
* from which the connection objects created by a TDBC driver
* may inherit.
*
*-----------------------------------------------------------------------------
*/
int
Tdbc_Init(
Tcl_Interp* interp /* Tcl interpreter */
) {
int i;
/* Require Tcl */
if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
return TCL_ERROR;
}
/* Create the provided commands */
for (i = 0; commandTable[i].name != NULL; ++i) {
Tcl_CreateObjCommand(interp, commandTable[i].name, commandTable[i].proc,
(ClientData) NULL, (Tcl_CmdDeleteProc*) NULL);
}
/* Provide the TDBC package */
if (Tcl_PkgProvideEx(interp, PACKAGE_NAME, PACKAGE_VERSION,
(ClientData) &tdbcStubs) == TCL_ERROR) {
return TCL_ERROR;
}
return TCL_OK;
}
|
