SQLAllocHandle.cpp
上传用户:romrleung
上传日期:2022-05-23
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文件大小:2k
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #include "driver.hpp"
- #if ODBCVER >= 0x0300
- SQLRETURN SQL_API
- SQLAllocHandle(
- SQLSMALLINT HandleType,
- SQLHANDLE InputHandle,
- SQLHANDLE* OutputHandle)
- {
- driver_enter(SQL_API_SQLALLOCHANDLE);
- const char* const sqlFunction = "SQLAllocHandle";
- HandleRoot* const pRoot = HandleRoot::instance();
- SQLSMALLINT parentType = pRoot->findParentType(HandleType);
- if (parentType == -1) {
- driver_exit(SQL_API_SQLALLOCHANDLE);
- return SQL_INVALID_HANDLE;
- }
- HandleBase* pParent = pRoot->findBase(parentType, InputHandle);
- if (pParent == 0) {
- driver_exit(SQL_API_SQLALLOCHANDLE);
- return SQL_INVALID_HANDLE;
- }
- Ctx& ctx = *new Ctx;
- ctx.logSqlEnter(sqlFunction);
- HandleBase* pChild = 0;
- HandleBase** ppChild = 0;
- if (OutputHandle != 0)
- ppChild = &pChild;
- try {
- pParent->sqlAllocHandle(ctx, HandleType, ppChild);
- } catch (CtxAssert& ctxAssert) {
- ctx.handleEx(ctxAssert);
- }
- if (OutputHandle != 0)
- *OutputHandle = static_cast<SQLHANDLE>(pChild);
- if (pRoot == pParent)
- pRoot->lockHandle();
- pParent->saveCtx(ctx);
- ctx.logSqlExit();
- SQLRETURN ret = ctx.getCode();
- if (pRoot == pParent)
- pRoot->unlockHandle();
- driver_exit(SQL_API_SQLALLOCHANDLE);
- return ret;
- }
- #endif // ODBCVER >= 0x0300