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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 <sal/config.h>
#include <string_view>
#include "parseschema.hxx"
#include "fbcreateparser.hxx"
#include "fbalterparser.hxx"
#include "utils.hxx"
#include <com/sun/star/io/TextInputStream.hpp>
#include <com/sun/star/embed/XStorage.hpp>
#include <com/sun/star/embed/ElementModes.hpp>
#include <comphelper/processfactory.hxx>
#include <comphelper/string.hxx>
#include <sal/log.hxx>
#include <connectivity/dbexception.hxx>
#include <utility>
namespace
{
using namespace ::comphelper;
using IndexVector = std::vector<sal_Int32>;
class IndexStmtParser
{
private:
OUString m_sql;
public:
IndexStmtParser(OUString sSql)
: m_sql(std::move(sSql))
{
}
bool isIndexStatement() const
{
return m_sql.startsWith("SET TABLE") && m_sql.indexOf("INDEX") >= 0;
}
IndexVector getIndexes() const
{
assert(isIndexStatement());
std::u16string_view sIndexPart = m_sql.subView(m_sql.indexOf("INDEX") + 5);
size_t nQuotePos = sIndexPart.find('\'');
if (nQuotePos == std::u16string_view::npos)
nQuotePos = 0;
else
++nQuotePos;
std::u16string_view sIndexNums
= sIndexPart.substr(nQuotePos, sIndexPart.rfind('\'') - nQuotePos);
std::vector<OUString> sIndexes = string::split(sIndexNums, u' ');
IndexVector indexes;
for (const auto& sIndex : sIndexes)
indexes.push_back(sIndex.toInt32());
// ignore last element
// TODO this is an identity peek, which indicates the value of the next
// identity. At the current state all migrated identities start with 0.
indexes.pop_back();
return indexes;
}
OUString getTableName() const
{
// SET TABLE <tableName> or SET TABLE "<multi word table name>"
OUString sName = string::split(m_sql, u' ')[2];
if (sName.indexOf('"') >= 0)
{
// Table name with string delimiter
sName = "\"" + string::split(m_sql, u'"')[1] + "\"";
}
return sName;
}
};
OUString lcl_createAlterForeign(std::u16string_view sForeignPart, std::u16string_view sTableName)
{
return OUString::Concat("ALTER TABLE ") + sTableName + " ADD " + sForeignPart;
}
} // anonymous namespace
namespace dbahsql
{
using namespace css::io;
using namespace css::uno;
using namespace css::embed;
SchemaParser::SchemaParser(Reference<XStorage>& rStorage)
: m_rStorage(rStorage)
{
}
void SchemaParser::parseSchema()
{
assert(m_rStorage);
static constexpr OUString SCHEMA_FILENAME = u"script"_ustr;
if (!m_rStorage->hasByName(SCHEMA_FILENAME))
{
SAL_WARN("dbaccess", "script file does not exist in storage during hsqldb import");
return;
}
Reference<XStream> xStream(m_rStorage->openStreamElement(SCHEMA_FILENAME, ElementModes::READ));
Reference<XComponentContext> rContext = comphelper::getProcessComponentContext();
Reference<XTextInputStream2> xTextInput = TextInputStream::create(rContext);
xTextInput->setEncoding("UTF-8");
xTextInput->setInputStream(xStream->getInputStream());
while (!xTextInput->isEOF())
{
// every line contains exactly one DDL statement
OUString sSql = utils::convertToUTF8(
OUStringToOString(xTextInput->readLine(), RTL_TEXTENCODING_UTF8));
IndexStmtParser indexParser{ sSql };
if (indexParser.isIndexStatement())
{
m_Indexes[indexParser.getTableName()] = indexParser.getIndexes();
}
else if (sSql.startsWith("SET") || sSql.startsWith("CREATE USER")
|| sSql.startsWith("CREATE SCHEMA") || sSql.startsWith("GRANT"))
continue;
else if (sSql.startsWith("CREATE CACHED TABLE") || sSql.startsWith("CREATE TABLE"))
{
FbCreateStmtParser aCreateParser;
aCreateParser.parse(sSql);
for (const auto& foreignParts : aCreateParser.getForeignParts())
{
m_sAlterStatements.push_back(
lcl_createAlterForeign(foreignParts, aCreateParser.getTableName()));
}
sSql = aCreateParser.compose();
// save column definitions
m_ColumnTypes[aCreateParser.getTableName()] = aCreateParser.getColumnDef();
m_sCreateStatements.push_back(sSql);
}
else if (sSql.startsWith("ALTER"))
{
FbAlterStmtParser aAlterParser;
aAlterParser.parse(sSql);
OUString parsedStmt = aAlterParser.compose();
if (!parsedStmt.isEmpty())
m_sAlterStatements.push_back(parsedStmt);
}
else if (sSql.startsWith("CREATE VIEW"))
m_sCreateStatements.push_back(sSql);
}
}
std::vector<ColumnDefinition> SchemaParser::getTableColumnTypes(const OUString& sTableName) const
{
if (m_ColumnTypes.count(sTableName) < 1)
{
static constexpr OUString NOT_EXIST
= u"Internal error while getting column information of table"_ustr;
SAL_WARN("dbaccess", NOT_EXIST << ". Table name is: " << sTableName);
dbtools::throwGenericSQLException(NOT_EXIST, ::comphelper::getProcessComponentContext());
}
return m_ColumnTypes.at(sTableName);
}
const std::map<OUString, std::vector<sal_Int32>>& SchemaParser::getTableIndexes() const
{
return m_Indexes;
}
const std::map<OUString, std::vector<OUString>>& SchemaParser::getPrimaryKeys() const
{
return m_PrimaryKeys;
}
} // namespace dbahsql
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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