xref: /trunk/main/connectivity/source/drivers/odbcbase/OResultSetMetaData.cxx (revision 9b5730f6)

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 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_connectivity.hxx"
#include "odbc/OResultSetMetaData.hxx"
#include "odbc/OTools.hxx"
#include <rtl/logfile.hxx>

using namespace connectivity::odbc;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
using namespace com::sun::star::sdbc;

// -------------------------------------------------------------------------
OResultSetMetaData::~OResultSetMetaData()
{
}
// -------------------------------------------------------------------------
::rtl::OUString OResultSetMetaData::getCharColAttrib(sal_Int32 _column,sal_Int32 ident) throw(SQLException, RuntimeException)
{
	sal_Int32 column = _column;
	if(_column <(sal_Int32) m_vMapping.size()) // use mapping
		column = m_vMapping[_column];

	SQLSMALLINT BUFFER_LEN = 128;
	char *pName = new char[BUFFER_LEN+1];
	SQLSMALLINT nRealLen=0;
	SQLRETURN nRet = N3SQLColAttribute(m_aStatementHandle,
									(SQLUSMALLINT)column,
									(SQLUSMALLINT)ident,
									(SQLPOINTER)pName,
									BUFFER_LEN,
									&nRealLen,
									NULL
									);
	::rtl::OUString sValue;
	if ( nRet == SQL_SUCCESS )
	{
		if ( nRealLen < 0 )
			nRealLen = BUFFER_LEN;
		sValue = ::rtl::OUString(pName,nRealLen,m_pConnection->getTextEncoding());
	}
	delete [] pName;
	OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
	if(nRealLen > BUFFER_LEN)
	{
		pName = new char[nRealLen+1];
		nRet = N3SQLColAttribute(m_aStatementHandle,
									(SQLUSMALLINT)column,
									(SQLUSMALLINT)ident,
									(SQLPOINTER)pName,
									nRealLen,
									&nRealLen,
									NULL
									);
		if ( nRet == SQL_SUCCESS && nRealLen > 0)
			sValue = ::rtl::OUString(pName,nRealLen,m_pConnection->getTextEncoding());
		delete [] pName;
		OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
	}

	return  sValue;
}
// -------------------------------------------------------------------------
SQLLEN OResultSetMetaData::getNumColAttrib(OConnection* _pConnection
                                              ,SQLHANDLE _aStatementHandle
                                              ,const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _xInterface
                                              ,sal_Int32 _column
                                              ,sal_Int32 _ident) throw(SQLException, RuntimeException)
{
	SQLLEN nValue=0;
	OTools::ThrowException(_pConnection,(*(T3SQLColAttribute)_pConnection->getOdbcFunction(ODBC3SQLColAttribute))(_aStatementHandle,
										 (SQLUSMALLINT)_column,
										 (SQLUSMALLINT)_ident,
										 NULL,
										 0,
										 NULL,
										 &nValue),_aStatementHandle,SQL_HANDLE_STMT,_xInterface);
	return nValue;
}
// -------------------------------------------------------------------------
sal_Int32 OResultSetMetaData::getNumColAttrib(sal_Int32 _column,sal_Int32 ident) throw(SQLException, RuntimeException)
{
	sal_Int32 column = _column;
	if(_column < (sal_Int32)m_vMapping.size()) // use mapping
		column = m_vMapping[_column];

    return getNumColAttrib(m_pConnection,m_aStatementHandle,*this,column,ident);
}
// -------------------------------------------------------------------------
sal_Int32 SAL_CALL OResultSetMetaData::getColumnDisplaySize( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getNumColAttrib(column,SQL_DESC_DISPLAY_SIZE);
}
// -------------------------------------------------------------------------
SQLSMALLINT OResultSetMetaData::getColumnODBCType(OConnection* _pConnection
                                              ,SQLHANDLE _aStatementHandle
                                              ,const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _xInterface
                                              ,sal_Int32 column)
                                               throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException)
{
    SQLSMALLINT nType = 0;
    try
    {
	    nType = (SQLSMALLINT)getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column,SQL_DESC_CONCISE_TYPE);
	    if(nType == SQL_UNKNOWN_TYPE)
		    nType = (SQLSMALLINT)getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column, SQL_DESC_TYPE);
    }
    catch(SQLException& ) // in this case we have an odbc 2.0 driver
    {
	    nType = (SQLSMALLINT)getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column,SQL_DESC_CONCISE_TYPE );
    }

    return nType;
}
// -----------------------------------------------------------------------------
sal_Int32 SAL_CALL OResultSetMetaData::getColumnType( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    ::std::map<sal_Int32,sal_Int32>::iterator aFind = m_aColumnTypes.find(column);
    if ( aFind == m_aColumnTypes.end() )
    {
	    sal_Int32 nType = 0;
	    if(!m_bUseODBC2Types)
	    {
		    try
		    {
			    nType = getNumColAttrib(column,SQL_DESC_CONCISE_TYPE);
			    if(nType == SQL_UNKNOWN_TYPE)
				    nType = getNumColAttrib(column, SQL_DESC_TYPE);
			    nType = OTools::MapOdbcType2Jdbc(nType);
		    }
		    catch(SQLException& ) // in this case we have an odbc 2.0 driver
		    {
			    m_bUseODBC2Types = sal_True;
			    nType = OTools::MapOdbcType2Jdbc(getNumColAttrib(column,SQL_DESC_CONCISE_TYPE ));
		    }
	    }
	    else
		    nType = OTools::MapOdbcType2Jdbc(getNumColAttrib(column,SQL_DESC_CONCISE_TYPE ));
        aFind = m_aColumnTypes.insert(::std::map<sal_Int32,sal_Int32>::value_type(column,nType)).first;
    }


	return aFind->second;
}
// -------------------------------------------------------------------------

sal_Int32 SAL_CALL OResultSetMetaData::getColumnCount(  ) throw(SQLException, RuntimeException)
{
	if(m_nColCount != -1)
		return m_nColCount;
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::getColumnCount" );
	sal_Int16 nNumResultCols=0;
	OTools::ThrowException(m_pConnection,N3SQLNumResultCols(m_aStatementHandle,&nNumResultCols),m_aStatementHandle,SQL_HANDLE_STMT,*this);
	return m_nColCount = nNumResultCols;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isCaseSensitive( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getNumColAttrib(column,SQL_DESC_CASE_SENSITIVE) == SQL_TRUE;
}
// -------------------------------------------------------------------------

::rtl::OUString SAL_CALL OResultSetMetaData::getSchemaName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getCharColAttrib(column,SQL_DESC_SCHEMA_NAME);
}
// -------------------------------------------------------------------------

::rtl::OUString SAL_CALL OResultSetMetaData::getColumnName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getCharColAttrib(column,SQL_DESC_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getTableName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getCharColAttrib(column,SQL_DESC_TABLE_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getCatalogName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getCharColAttrib(column,SQL_DESC_CATALOG_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getColumnTypeName( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::getColumnTypeName" );
	return getCharColAttrib(column,SQL_DESC_TYPE_NAME);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getColumnLabel( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::getColumnLabel" );
	return getCharColAttrib(column,SQL_DESC_LABEL);
}
// -------------------------------------------------------------------------
::rtl::OUString SAL_CALL OResultSetMetaData::getColumnServiceName( sal_Int32 /*column*/ ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::getColumnServiceName" );
	return ::rtl::OUString();
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isCurrency( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getNumColAttrib(column,SQL_DESC_FIXED_PREC_SCALE) == SQL_TRUE;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isAutoIncrement( sal_Int32 column ) throw(SQLException, RuntimeException)
{
	return getNumColAttrib(column,SQL_DESC_AUTO_UNIQUE_VALUE) == SQL_TRUE;
}
// -------------------------------------------------------------------------


sal_Bool SAL_CALL OResultSetMetaData::isSigned( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::isSigned" );
	return getNumColAttrib(column,SQL_DESC_UNSIGNED) == SQL_FALSE;
}
// -------------------------------------------------------------------------
sal_Int32 SAL_CALL OResultSetMetaData::getPrecision( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::getPrecision" );
	sal_Int32 nType = 0;
	try
	{
		nType = getNumColAttrib(column,SQL_DESC_PRECISION);
	}
	catch(const SQLException& ) // in this case we have an odbc 2.0 driver
	{
		m_bUseODBC2Types = sal_True;
		nType = getNumColAttrib(column,SQL_COLUMN_PRECISION );
	}
	return nType;
}
// -----------------------------------------------------------------------------
sal_Int32 SAL_CALL OResultSetMetaData::getScale( sal_Int32 column ) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::getScale" );
	sal_Int32 nType = 0;
	try
	{
		nType = getNumColAttrib(column,SQL_DESC_SCALE);
	}
	catch(const SQLException& ) // in this case we have an odbc 2.0 driver
	{
		m_bUseODBC2Types = sal_True;
		nType = getNumColAttrib(column,SQL_COLUMN_SCALE );
	}
	return nType;
}
// -------------------------------------------------------------------------

sal_Int32 SAL_CALL OResultSetMetaData::isNullable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::isNullable" );
	return getNumColAttrib(column,SQL_DESC_NULLABLE);
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isSearchable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::isSearchable" );
	return getNumColAttrib(column,SQL_DESC_SEARCHABLE) != SQL_PRED_NONE;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isReadOnly( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::isReadOnly" );
	return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_READONLY;
}
// -------------------------------------------------------------------------

sal_Bool SAL_CALL OResultSetMetaData::isDefinitelyWritable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::isDefinitelyWritable" );
	return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
;
}
// -------------------------------------------------------------------------
sal_Bool SAL_CALL OResultSetMetaData::isWritable( sal_Int32 column ) throw(SQLException, RuntimeException)
{
    RTL_LOGFILE_CONTEXT_AUTHOR( aLogger, "odbc", "Ocke.Janssen@sun.com", "OResultSetMetaData::isWritable" );
	return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
}
// -------------------------------------------------------------------------