334 lines
12 KiB
C++
334 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <odbc/OResultSetMetaData.hxx>
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#include <odbc/OTools.hxx>
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using namespace connectivity::odbc;
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using namespace com::sun::star::uno;
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using namespace com::sun::star::sdbc;
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OResultSetMetaData::~OResultSetMetaData()
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{
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}
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OUString OResultSetMetaData::getCharColAttrib(sal_Int32 _column,sal_Int32 ident)
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{
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sal_Int32 column = _column;
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if(_column <static_cast<sal_Int32>(m_vMapping.size())) // use mapping
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column = m_vMapping[_column];
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OUString sValue;
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SQLSMALLINT cbRealLen = 0;
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if (bUseWChar && functions().has(ODBC3SQLFunctionId::ColAttributeW))
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{
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// SQLColAttributeW gets/returns count of bytes, not characters
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SQLSMALLINT cbBufferLen = 128 * sizeof(SQLWCHAR);
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auto pName = std::make_unique<SQLWCHAR[]>(cbBufferLen / sizeof(SQLWCHAR) + 1);
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SQLRETURN nRet = functions().ColAttributeW(m_aStatementHandle,
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column,
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ident,
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pName.get(),
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cbBufferLen,
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&cbRealLen,
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nullptr);
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OTools::ThrowException(m_pConnection, nRet, m_aStatementHandle, SQL_HANDLE_STMT, *this);
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if (nRet == SQL_SUCCESS)
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{
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if (cbRealLen < 0)
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cbRealLen = cbBufferLen;
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sValue = toUString(pName.get(), cbRealLen / sizeof(SQLWCHAR));
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}
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if (cbRealLen > cbBufferLen)
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{
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cbBufferLen = (cbRealLen + 1) & ~1; // Make sure it's even
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pName = std::make_unique<SQLWCHAR[]>(cbBufferLen / sizeof(SQLWCHAR) + 1);
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nRet = functions().ColAttributeW(m_aStatementHandle,
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column,
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ident,
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pName.get(),
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cbBufferLen,
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&cbRealLen,
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nullptr);
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OTools::ThrowException(m_pConnection, nRet, m_aStatementHandle, SQL_HANDLE_STMT, *this);
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if (nRet == SQL_SUCCESS && cbRealLen > 0)
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sValue = toUString(pName.get(), cbRealLen / sizeof(SQLWCHAR));
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}
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}
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else
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{
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SQLSMALLINT BUFFER_LEN = 128;
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auto pName = std::make_unique<SQLCHAR[]>(BUFFER_LEN + 1);
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SQLRETURN nRet = functions().ColAttribute(m_aStatementHandle,
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static_cast<SQLUSMALLINT>(column),
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static_cast<SQLUSMALLINT>(ident),
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static_cast<SQLPOINTER>(pName.get()),
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BUFFER_LEN,
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&cbRealLen,
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nullptr
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);
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if ( nRet == SQL_SUCCESS )
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{
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if ( cbRealLen < 0 )
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cbRealLen = BUFFER_LEN;
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sValue = toUString(pName.get(), cbRealLen, m_pConnection->getTextEncoding());
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}
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OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
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if(cbRealLen > BUFFER_LEN)
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{
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pName = std::make_unique<SQLCHAR[]>(cbRealLen + 1);
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nRet = functions().ColAttribute(m_aStatementHandle,
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static_cast<SQLUSMALLINT>(column),
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static_cast<SQLUSMALLINT>(ident),
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static_cast<SQLPOINTER>(pName.get()),
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cbRealLen,
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&cbRealLen,
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nullptr
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);
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if ( nRet == SQL_SUCCESS && cbRealLen > 0)
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sValue = toUString(pName.get(), cbRealLen, m_pConnection->getTextEncoding());
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OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
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}
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}
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return sValue;
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}
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SQLLEN OResultSetMetaData::getNumColAttrib(OConnection const * _pConnection
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,SQLHANDLE _aStatementHandle
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,const css::uno::Reference< css::uno::XInterface >& _xInterface
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,sal_Int32 _column
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,sal_Int32 _ident)
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{
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SQLLEN nValue=0;
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OTools::ThrowException(_pConnection,_pConnection->functions().ColAttribute(_aStatementHandle,
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static_cast<SQLUSMALLINT>(_column),
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static_cast<SQLUSMALLINT>(_ident),
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nullptr,
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0,
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nullptr,
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&nValue),_aStatementHandle,SQL_HANDLE_STMT,_xInterface);
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return nValue;
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}
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sal_Int32 OResultSetMetaData::getNumColAttrib(sal_Int32 _column,sal_Int32 ident)
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{
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sal_Int32 column = _column;
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if(_column < static_cast<sal_Int32>(m_vMapping.size())) // use mapping
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column = m_vMapping[_column];
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return getNumColAttrib(m_pConnection,m_aStatementHandle,*this,column,ident);
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}
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sal_Int32 SAL_CALL OResultSetMetaData::getColumnDisplaySize( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_DISPLAY_SIZE);
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}
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SQLSMALLINT OResultSetMetaData::getColumnODBCType(OConnection const * _pConnection
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,SQLHANDLE _aStatementHandle
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,const css::uno::Reference< css::uno::XInterface >& _xInterface
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,sal_Int32 column)
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{
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SQLSMALLINT nType = 0;
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try
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{
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nType = static_cast<SQLSMALLINT>(getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column,SQL_DESC_CONCISE_TYPE));
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if(nType == SQL_UNKNOWN_TYPE)
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nType = static_cast<SQLSMALLINT>(getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column, SQL_DESC_TYPE));
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}
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catch(SQLException& ) // in this case we have an odbc 2.0 driver
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{
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nType = static_cast<SQLSMALLINT>(getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column,SQL_DESC_CONCISE_TYPE ));
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}
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return nType;
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}
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sal_Int32 SAL_CALL OResultSetMetaData::getColumnType( sal_Int32 column )
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{
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std::map<sal_Int32,sal_Int32>::iterator aFind = m_aColumnTypes.find(column);
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if ( aFind == m_aColumnTypes.end() )
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{
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sal_Int32 nType = 0;
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if(!m_bUseODBC2Types)
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{
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try
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{
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nType = getNumColAttrib(column,SQL_DESC_CONCISE_TYPE);
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if(nType == SQL_UNKNOWN_TYPE)
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nType = getNumColAttrib(column, SQL_DESC_TYPE);
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nType = OTools::MapOdbcType2Jdbc(nType);
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}
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catch(SQLException& ) // in this case we have an odbc 2.0 driver
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{
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m_bUseODBC2Types = true;
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}
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}
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if (m_bUseODBC2Types)
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nType = OTools::MapOdbcType2Jdbc(getNumColAttrib(column, SQL_DESC_CONCISE_TYPE));
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aFind = m_aColumnTypes.emplace(column,nType).first;
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}
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return aFind->second;
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}
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sal_Int32 SAL_CALL OResultSetMetaData::getColumnCount( )
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{
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if(m_nColCount != -1)
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return m_nColCount;
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sal_Int16 nNumResultCols=0;
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OTools::ThrowException(m_pConnection,functions().NumResultCols(m_aStatementHandle,&nNumResultCols),m_aStatementHandle,SQL_HANDLE_STMT,*this);
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m_nColCount = nNumResultCols;
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return m_nColCount;
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}
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sal_Bool SAL_CALL OResultSetMetaData::isCaseSensitive( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_CASE_SENSITIVE) == SQL_TRUE;
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}
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OUString SAL_CALL OResultSetMetaData::getSchemaName( sal_Int32 column )
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{
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return getCharColAttrib(column,SQL_DESC_SCHEMA_NAME);
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}
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OUString SAL_CALL OResultSetMetaData::getColumnName( sal_Int32 column )
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{
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return getCharColAttrib(column,SQL_DESC_NAME);
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}
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OUString SAL_CALL OResultSetMetaData::getTableName( sal_Int32 column )
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{
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return getCharColAttrib(column,SQL_DESC_TABLE_NAME);
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}
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OUString SAL_CALL OResultSetMetaData::getCatalogName( sal_Int32 column )
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{
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return getCharColAttrib(column,SQL_DESC_CATALOG_NAME);
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}
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OUString SAL_CALL OResultSetMetaData::getColumnTypeName( sal_Int32 column )
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{
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return getCharColAttrib(column,SQL_DESC_TYPE_NAME);
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}
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OUString SAL_CALL OResultSetMetaData::getColumnLabel( sal_Int32 column )
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{
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return getCharColAttrib(column,SQL_DESC_LABEL);
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}
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OUString SAL_CALL OResultSetMetaData::getColumnServiceName( sal_Int32 /*column*/ )
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{
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return OUString();
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}
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sal_Bool SAL_CALL OResultSetMetaData::isCurrency( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_FIXED_PREC_SCALE) == SQL_TRUE;
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}
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sal_Bool SAL_CALL OResultSetMetaData::isAutoIncrement( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_AUTO_UNIQUE_VALUE) == SQL_TRUE;
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}
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sal_Bool SAL_CALL OResultSetMetaData::isSigned( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_UNSIGNED) == SQL_FALSE;
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}
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sal_Int32 SAL_CALL OResultSetMetaData::getPrecision( sal_Int32 column )
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{
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sal_Int32 nType = 0;
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if (!m_bUseODBC2Types)
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{
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try
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{
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nType = getNumColAttrib(column, SQL_DESC_PRECISION);
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}
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catch (const SQLException&) // in this case we have an odbc 2.0 driver
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{
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m_bUseODBC2Types = true;
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}
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}
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if (m_bUseODBC2Types)
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nType = getNumColAttrib(column, SQL_COLUMN_PRECISION);
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return nType;
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}
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sal_Int32 SAL_CALL OResultSetMetaData::getScale( sal_Int32 column )
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{
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sal_Int32 nType = 0;
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if (!m_bUseODBC2Types)
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{
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try
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{
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nType = getNumColAttrib(column, SQL_DESC_SCALE);
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}
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catch (const SQLException&) // in this case we have an odbc 2.0 driver
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{
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m_bUseODBC2Types = true;
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}
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}
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if (m_bUseODBC2Types)
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nType = getNumColAttrib(column, SQL_COLUMN_SCALE);
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return nType;
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}
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sal_Int32 SAL_CALL OResultSetMetaData::isNullable( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_NULLABLE);
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}
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sal_Bool SAL_CALL OResultSetMetaData::isSearchable( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_SEARCHABLE) != SQL_PRED_NONE;
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}
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sal_Bool SAL_CALL OResultSetMetaData::isReadOnly( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_READONLY;
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}
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sal_Bool SAL_CALL OResultSetMetaData::isDefinitelyWritable( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
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}
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sal_Bool SAL_CALL OResultSetMetaData::isWritable( sal_Int32 column )
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{
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return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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