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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#include <connectivity/predicateinput.hxx>
#include <comphelper/types.hxx>
#include <connectivity/dbtools.hxx>
#include <com/sun/star/i18n/LocaleData.hpp>
#include <com/sun/star/sdbc/DataType.hpp>
#include <com/sun/star/sdbc/ColumnValue.hpp>
#include <com/sun/star/sdbc/XConnection.hpp>
#include <com/sun/star/util/NumberFormatter.hpp>
#include <osl/diagnose.h>
#include <connectivity/sqlnode.hxx>
#include <connectivity/PColumn.hxx>
#include <comphelper/numbers.hxx>
#include <tools/diagnose_ex.h>
#include <memory>
#include <string_view>
namespace dbtools
{
using ::com::sun::star::sdbc::XConnection;
using ::com::sun::star::util::XNumberFormatsSupplier;
using ::com::sun::star::util::NumberFormatter;
using ::com::sun::star::uno::UNO_QUERY_THROW;
using ::com::sun::star::uno::XComponentContext;
using ::com::sun::star::beans::XPropertySet;
using ::com::sun::star::beans::XPropertySetInfo;
using ::com::sun::star::lang::Locale;
using ::com::sun::star::uno::Exception;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::i18n::LocaleData;
using ::com::sun::star::i18n::LocaleDataItem;
using ::com::sun::star::uno::Any;
using namespace ::com::sun::star::sdbc;
using namespace ::connectivity;
using ::connectivity::OSQLParseNode;
static sal_Unicode lcl_getSeparatorChar(
std::u16string_view _rSeparator, sal_Unicode _nFallback )
{
OSL_ENSURE( !_rSeparator.empty(), "::lcl_getSeparatorChar: invalid separator string!" );
sal_Unicode nReturn( _nFallback );
if ( !_rSeparator.empty() )
nReturn = _rSeparator[0];
return nReturn;
}
bool OPredicateInputController::getSeparatorChars( const Locale& _rLocale, sal_Unicode& _rDecSep, sal_Unicode& _rThdSep ) const
{
_rDecSep = '.';
_rThdSep = ',';
try
{
LocaleDataItem aLocaleData;
if ( m_xLocaleData.is() )
{
aLocaleData = m_xLocaleData->getLocaleItem( _rLocale );
_rDecSep = lcl_getSeparatorChar( aLocaleData.decimalSeparator, _rDecSep );
_rThdSep = lcl_getSeparatorChar( aLocaleData.thousandSeparator, _rThdSep );
return true;
}
}
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "connectivity.commontools", "OPredicateInputController::getSeparatorChars" );
}
return false;
}
OPredicateInputController::OPredicateInputController(
const Reference< XComponentContext >& rxContext, const Reference< XConnection >& _rxConnection, const IParseContext* _pParseContext )
: m_xConnection( _rxConnection )
,m_aParser( rxContext, _pParseContext )
{
try
{
// create a number formatter / number formats supplier pair
OSL_ENSURE( rxContext.is(), "OPredicateInputController::OPredicateInputController: need a service factory!" );
if ( rxContext.is() )
{
m_xFormatter.set( NumberFormatter::create(rxContext), UNO_QUERY_THROW );
}
Reference< XNumberFormatsSupplier > xNumberFormats = ::dbtools::getNumberFormats( m_xConnection, true );
if ( !xNumberFormats.is() )
::comphelper::disposeComponent( m_xFormatter );
else
m_xFormatter->attachNumberFormatsSupplier( xNumberFormats );
// create the locale data
if ( rxContext.is() )
{
m_xLocaleData = LocaleData::create( rxContext );
}
}
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "connectivity.commontools", "OPredicateInputController::OPredicateInputController" );
}
}
std::unique_ptr<OSQLParseNode> OPredicateInputController::implPredicateTree(OUString& _rErrorMessage, const OUString& _rStatement, const Reference< XPropertySet > & _rxField) const
{
std::unique_ptr<OSQLParseNode> pReturn = const_cast< OSQLParser& >( m_aParser ).predicateTree( _rErrorMessage, _rStatement, m_xFormatter, _rxField );
if ( !pReturn )
{ // is it a text field ?
sal_Int32 nType = DataType::OTHER;
_rxField->getPropertyValue("Type") >>= nType;
if ( ( DataType::CHAR == nType )
|| ( DataType::VARCHAR == nType )
|| ( DataType::LONGVARCHAR == nType )
|| ( DataType::CLOB == nType )
)
{ // yes -> force a quoted text and try again
OUString sQuoted( _rStatement );
if ( !sQuoted.isEmpty()
&& ( !sQuoted.startsWith("'")
|| !sQuoted.endsWith("'")
)
)
{
static const char sSingleQuote[] = "'";
sal_Int32 nIndex = -1;
sal_Int32 nTemp = 0;
while ( -1 != ( nIndex = sQuoted.indexOf( '\'',nTemp ) ) )
{
sQuoted = sQuoted.replaceAt( nIndex, 1, u"''" );
nTemp = nIndex+2;
}
sQuoted = sSingleQuote + sQuoted + sSingleQuote;
}
pReturn = const_cast< OSQLParser& >( m_aParser ).predicateTree( _rErrorMessage, sQuoted, m_xFormatter, _rxField );
}
// one more fallback: for numeric fields, and value strings containing a decimal/thousands separator
// problem which is to be solved with this:
// * a system locale "german"
// * a column formatted with an english number format
// => the output is german (as we use the system locale for this), i.e. "3,4"
// => the input does not recognize the german text, as predicateTree uses the number format
// of the column to determine the main locale - the locale on the context is only a fallback
if ( ( DataType::FLOAT == nType )
|| ( DataType::REAL == nType )
|| ( DataType::DOUBLE == nType )
|| ( DataType::NUMERIC == nType )
|| ( DataType::DECIMAL == nType )
)
{
const IParseContext& rParseContext = m_aParser.getContext();
// get the separators for the locale of our parse context
sal_Unicode nCtxDecSep;
sal_Unicode nCtxThdSep;
getSeparatorChars( rParseContext.getPreferredLocale(), nCtxDecSep, nCtxThdSep );
// determine the locale of the column we're building a predicate string for
sal_Unicode nFmtDecSep( nCtxDecSep );
sal_Unicode nFmtThdSep( nCtxThdSep );
try
{
Reference< XPropertySetInfo > xPSI( _rxField->getPropertySetInfo() );
if ( xPSI.is() && xPSI->hasPropertyByName("FormatKey") )
{
sal_Int32 nFormatKey = 0;
_rxField->getPropertyValue("FormatKey") >>= nFormatKey;
if ( nFormatKey && m_xFormatter.is() )
{
Locale aFormatLocale;
::comphelper::getNumberFormatProperty(
m_xFormatter,
nFormatKey,
"Locale"
) >>= aFormatLocale;
// valid locale
if ( !aFormatLocale.Language.isEmpty() )
{
getSeparatorChars( aFormatLocale, nFmtDecSep, nCtxThdSep );
}
}
}
}
catch( const Exception& )
{
TOOLS_WARN_EXCEPTION( "connectivity.commontools", "OPredicateInputController::implPredicateTree: caught an exception while dealing with the formats!" );
}
bool bDecDiffers = ( nCtxDecSep != nFmtDecSep );
bool bFmtDiffers = ( nCtxThdSep != nFmtThdSep );
if ( bDecDiffers || bFmtDiffers )
{ // okay, at least one differs
// "translate" the value into the "format locale"
OUString sTranslated( _rStatement );
const sal_Unicode nIntermediate( '_' );
sTranslated = sTranslated.replace( nCtxDecSep, nIntermediate );
sTranslated = sTranslated.replace( nCtxThdSep, nFmtThdSep );
sTranslated = sTranslated.replace( nIntermediate, nFmtDecSep );
pReturn = const_cast< OSQLParser& >( m_aParser ).predicateTree( _rErrorMessage, sTranslated, m_xFormatter, _rxField );
}
}
}
return pReturn;
}
bool OPredicateInputController::normalizePredicateString(
OUString& _rPredicateValue, const Reference< XPropertySet > & _rxField, OUString* _pErrorMessage ) const
{
OSL_ENSURE( m_xConnection.is() && m_xFormatter.is() && _rxField.is(),
"OPredicateInputController::normalizePredicateString: invalid state or params!" );
bool bSuccess = false;
if ( m_xConnection.is() && m_xFormatter.is() && _rxField.is() )
{
// parse the string
OUString sError;
OUString sTransformedText( _rPredicateValue );
std::unique_ptr<OSQLParseNode> pParseNode = implPredicateTree( sError, sTransformedText, _rxField );
if ( _pErrorMessage ) *_pErrorMessage = sError;
if ( pParseNode )
{
const IParseContext& rParseContext = m_aParser.getContext();
sal_Unicode nDecSeparator, nThousandSeparator;
getSeparatorChars( rParseContext.getPreferredLocale(), nDecSeparator, nThousandSeparator );
// translate it back into a string
sTransformedText.clear();
pParseNode->parseNodeToPredicateStr(
sTransformedText, m_xConnection, m_xFormatter, _rxField, OUString(),
rParseContext.getPreferredLocale(), OUString(nDecSeparator), &rParseContext
);
_rPredicateValue = sTransformedText;
bSuccess = true;
}
}
return bSuccess;
}
OUString OPredicateInputController::getPredicateValueStr(
const OUString& _rPredicateValue, const Reference< XPropertySet > & _rxField ) const
{
OSL_ENSURE( _rxField.is(), "OPredicateInputController::getPredicateValue: invalid params!" );
OUString sReturn;
if ( _rxField.is() )
{
// The following is mostly stolen from the former implementation in the parameter dialog
// (dbaccess/source/ui/dlg/paramdialog.cxx). I do not fully understand this...
OUString sError;
std::unique_ptr<OSQLParseNode> pParseNode = implPredicateTree( sError, _rPredicateValue, _rxField );
implParseNode(std::move(pParseNode), true) >>= sReturn;
}
return sReturn;
}
OUString OPredicateInputController::getPredicateValueStr(
const OUString& _sField, const OUString& _rPredicateValue ) const
{
OUString sReturn = _rPredicateValue;
OUString sError;
sal_Int32 nIndex = 0;
OUString sField = _sField.getToken(0, '(', nIndex);
if(nIndex == -1)
sField = _sField;
sal_Int32 nType = ::connectivity::OSQLParser::getFunctionReturnType(sField,&m_aParser.getContext());
if ( nType == DataType::OTHER || sField.isEmpty() )
{
// first try the international version
OUString sSql = "SELECT * FROM x WHERE " + sField + _rPredicateValue;
const_cast< OSQLParser& >( m_aParser ).parseTree( sError, sSql, true );
nType = DataType::DOUBLE;
}
Reference<XDatabaseMetaData> xMeta = m_xConnection->getMetaData();
rtl::Reference<parse::OParseColumn> pColumn = new parse::OParseColumn( sField,
OUString(),
OUString(),
OUString(),
ColumnValue::NULLABLE_UNKNOWN,
0,
0,
nType,
false,
false,
xMeta.is() && xMeta->supportsMixedCaseQuotedIdentifiers(),
OUString(),
OUString(),
OUString());
Reference<XPropertySet> xColumn = pColumn;
pColumn->setFunction(true);
pColumn->setRealName(sField);
std::unique_ptr<OSQLParseNode> pParseNode = implPredicateTree( sError, _rPredicateValue, xColumn );
if(pParseNode)
{
implParseNode(std::move(pParseNode), true) >>= sReturn;
}
return sReturn;
}
Any OPredicateInputController::getPredicateValue(
const OUString& _rPredicateValue, const Reference< XPropertySet > & _rxField ) const
{
OSL_ENSURE( _rxField.is(), "OPredicateInputController::getPredicateValue: invalid params!" );
if ( _rxField.is() )
{
// The following is mostly stolen from the former implementation in the parameter dialog
// (dbaccess/source/ui/dlg/paramdialog.cxx). I do not fully understand this...
OUString sError;
std::unique_ptr<OSQLParseNode> pParseNode = implPredicateTree( sError, _rPredicateValue, _rxField );
return implParseNode(std::move(pParseNode), false);
}
return Any();
}
Any OPredicateInputController::implParseNode(std::unique_ptr<OSQLParseNode> pParseNode, bool _bForStatementUse) const
{
if ( ! pParseNode )
return Any();
else
{
OUString sReturn;
OSQLParseNode* pOdbcSpec = pParseNode->getByRule( OSQLParseNode::odbc_fct_spec );
if ( pOdbcSpec )
{
if ( _bForStatementUse )
{
OSQLParseNode* pFuncSpecParent = pOdbcSpec->getParent();
OSL_ENSURE( pFuncSpecParent, "OPredicateInputController::getPredicateValue: an ODBC func spec node without parent?" );
if ( pFuncSpecParent )
pFuncSpecParent->parseNodeToStr(sReturn, m_xConnection, &m_aParser.getContext());
}
else
{
OSQLParseNode* pValueNode = pOdbcSpec->getChild(1);
if ( SQLNodeType::String == pValueNode->getNodeType() )
sReturn = pValueNode->getTokenValue();
else
pValueNode->parseNodeToStr(sReturn, m_xConnection, &m_aParser.getContext());
}
}
else
{
if (pParseNode->getKnownRuleID() == OSQLParseNode::test_for_null )
{
assert(pParseNode->count() == 2);
return Any();
}
// LEM this seems overly permissive as test...
else if (pParseNode->count() >= 3)
{
OSQLParseNode* pValueNode = pParseNode->getChild(2);
assert(pValueNode && "OPredicateInputController::getPredicateValue: invalid node child!");
if ( !_bForStatementUse )
{
if ( SQLNodeType::String == pValueNode->getNodeType() )
sReturn = pValueNode->getTokenValue();
else
pValueNode->parseNodeToStr(
sReturn, m_xConnection, &m_aParser.getContext()
);
}
else
pValueNode->parseNodeToStr(
sReturn, m_xConnection, &m_aParser.getContext()
);
}
else
{
OSL_FAIL( "OPredicateInputController::getPredicateValue: unknown/invalid structure (noodbc)!" );
return Any();
}
}
return Any(sReturn);
}
}
} // namespace dbtools
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
