tdf#116982 dbahsql: fix autoincrementation

Fix autoincrementation issue by parsing and processing statements like
"ALTER TABLE <name> ALTER COLUMN <col_name> RESTART WITH <num>"

Change-Id: Ib175d64343d05d4b2cfc9a4cf944d0d0478adbcc
Reviewed-on: https://gerrit.libreoffice.org/52879Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Bunth <btomi96@gmail.com>

dbaccess/Library_dbahsql.mk

@@ -38,11 +38,14 @@ $(eval $(call gb_Library_use_libraries,dbahsql,\
 $(eval $(call gb_Library_add_exception_objects,dbahsql,\
     dbaccess/source/filter/hsqldb/hsqlimport \
     dbaccess/source/filter/hsqldb/parseschema \
+    dbaccess/source/filter/hsqldb/alterparser \
     dbaccess/source/filter/hsqldb/createparser \
     dbaccess/source/filter/hsqldb/columndef \
+    dbaccess/source/filter/hsqldb/fbalterparser \
     dbaccess/source/filter/hsqldb/fbcreateparser \
     dbaccess/source/filter/hsqldb/rowinputbinary \
     dbaccess/source/filter/hsqldb/hsqlbinarynode \
+    dbaccess/source/filter/hsqldb/utils \
 ))
 
 # vim: set noet sw=4 ts=4:

dbaccess/source/filter/hsqldb/alterparser.cxx

+/* -*- 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 <comphelper/string.hxx>
+#include "alterparser.hxx"
+#include "utils.hxx"
+
+namespace dbahsql
+{
+void AlterStmtParser::parse(const OUString& sSql)
+{
+    if (!sSql.startsWith("ALTER"))
+    {
+        SAL_WARN("dbaccess", "Not an ALTER statement");
+        return;
+    }
+
+    m_sTableName = utils::getTableNameFromStmt(sSql);
+    auto words = comphelper::string::split(sSql, sal_Unicode(u' '));
+
+    if (words[3] == "ALTER" && words[4] == "COLUMN")
+        m_sColumnName = words[5];
+    if (words[6] == "RESTART" && words[7] == "WITH")
+    {
+        m_eAction = AlterAction::IDENTITY_RESTART;
+        m_nIdentityParam = words[8].toInt32();
+    }
+}
+
+} // namespace dbahsql
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

dbaccess/source/filter/hsqldb/alterparser.hxx

+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_ALTERPARSER_HXX
+#define INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_ALTERPARSER_HXX
+
+#include <rtl/ustrbuf.hxx>
+
+namespace dbahsql
+{
+enum class AlterAction
+{
+    UNKNOWN,
+    IDENTITY_RESTART
+};
+
+class SAL_DLLPUBLIC_EXPORT AlterStmtParser
+{
+private:
+    OUString m_sTableName;
+    OUString m_sColumnName;
+    AlterAction m_eAction = AlterAction::UNKNOWN;
+    sal_Int32 m_nIdentityParam = 0;
+
+protected:
+    AlterAction getActionType() const { return m_eAction; }
+    OUString getColumnName() const { return m_sColumnName; }
+    sal_Int32 getIdentityParam() const { return m_nIdentityParam; }
+
+public:
+    virtual ~AlterStmtParser() = default;
+
+    /**
+     * @return name of the table which is to be created.
+     */
+    OUString getTableName() const { return m_sTableName; }
+
+    void parse(const OUString& sSql);
+
+    virtual OUString compose() const = 0;
+};
+}
+
+#endif // INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_ALTERPARSER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

dbaccess/source/filter/hsqldb/createparser.cxx

@@ -19,6 +19,7 @@
 
 #include <comphelper/string.hxx>
 #include "createparser.hxx"
+#include "utils.hxx"
 #include <com/sun/star/sdbc/DataType.hpp>
 
 using namespace ::comphelper;
@@ -26,28 +27,6 @@ using namespace css::sdbc;
 
 namespace
 {
-OUString lcl_getTableName(const OUString& sSql)
-{
-    auto stmtComponents = string::split(sSql, sal_Unicode(u' '));
-    assert(stmtComponents.size() > 2);
-    auto wordIter = stmtComponents.begin();
-
-    if (*wordIter == "CREATE")
-        ++wordIter;
-    if (*wordIter == "CACHED")
-        ++wordIter;
-    if (*wordIter == "TABLE")
-        ++wordIter;
-
-    // next word is the table's name
-    // it might stuck together with the column definitions.
-    sal_Int32 nParenPos = wordIter->indexOf("(");
-    if (nParenPos > 0)
-        return wordIter->copy(0, nParenPos);
-    else
-        return *wordIter;
-}
-
 /// Returns substring of sSql from the first occurrence of '(' until the
 /// last occurrence of ')' (excluding the parenthesis)
 OUString lcl_getColumnPart(const OUString& sSql)
@@ -225,7 +204,7 @@ void CreateStmtParser::parse(const OUString& sSql)
         return;
     }
 
-    m_sTableName = lcl_getTableName(sSql);
+    m_sTableName = utils::getTableNameFromStmt(sSql);
     OUString sColumnPart = lcl_getColumnPart(sSql);
     parseColumnPart(sColumnPart);
 }

dbaccess/source/filter/hsqldb/fbalterparser.cxx

+/* -*- 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 "fbalterparser.hxx"
+#include <rtl/ustrbuf.hxx>
+
+namespace dbahsql
+{
+OUString FbAlterStmtParser::compose() const
+{
+    if (getActionType() == AlterAction::UNKNOWN)
+    {
+        SAL_WARN("dbaccess", "Unkown type of ALTER statement in FbAlterStmtParser");
+        return OUString{};
+    }
+    OUStringBuffer sSql("ALTER TABLE ");
+    sSql.append(getTableName());
+
+    if (getActionType() == AlterAction::IDENTITY_RESTART)
+    {
+        sSql.append(" ALTER COLUMN ");
+    }
+    sSql.append(getColumnName());
+    sSql.append(" RESTART WITH ");
+
+    // Firebird: restart with 0 means the first number is 1, not 0.
+    sSql.append(OUString::number(getIdentityParam() - 1));
+
+    return sSql.makeStringAndClear();
+}
+
+} // dbahsql
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

dbaccess/source/filter/hsqldb/fbalterparser.hxx

+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_FBALTERPARSER_HXX
+#define INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_FBALTERPARSER_HXX
+
+#include "alterparser.hxx"
+
+namespace dbahsql
+{
+class SAL_DLLPUBLIC_EXPORT FbAlterStmtParser : public AlterStmtParser
+{
+public:
+    /**
+     * Compose the result of the parser to statements of Firebird dialect
+     */
+    virtual OUString compose() const override;
+};
+
+} // dbahsql
+
+#endif // INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_FBALTERPARSER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

dbaccess/source/filter/hsqldb/parseschema.cxx

@@ -19,6 +19,7 @@
 
 #include "parseschema.hxx"
 #include "fbcreateparser.hxx"
+#include "fbalterparser.hxx"
 
 #include <com/sun/star/io/TextInputStream.hpp>
 #include <com/sun/star/embed/XStorage.hpp>
@@ -133,6 +134,15 @@ SqlStatementVector SchemaParser::parseSchema()
             m_ColumnTypes[aCreateParser.getTableName()] = aCreateParser.getColumnDef();
             parsedStatements.push_back(sSql);
         }
+        else if (sSql.startsWith("ALTER"))
+        {
+            FbAlterStmtParser aAlterParser;
+            aAlterParser.parse(sSql);
+            OUString parsedStmt = aAlterParser.compose();
+
+            if (!parsedStmt.isEmpty())
+                parsedStatements.push_back(parsedStmt);
+        }
     }
 
     return parsedStatements;

dbaccess/source/filter/hsqldb/utils.cxx

+
+/* -*- 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 <comphelper/string.hxx>
+#include "utils.hxx"
+
+using namespace dbahsql;
+
+OUString utils::getTableNameFromStmt(const OUString& sSql)
+{
+    auto stmtComponents = comphelper::string::split(sSql, sal_Unicode(u' '));
+    assert(stmtComponents.size() > 2);
+    auto wordIter = stmtComponents.begin();
+
+    if (*wordIter == "CREATE" || *wordIter == "ALTER")
+        ++wordIter;
+    if (*wordIter == "CACHED")
+        ++wordIter;
+    if (*wordIter == "TABLE")
+        ++wordIter;
+
+    // next word is the table's name
+    // it might stuck together with the column definitions.
+    sal_Int32 nParenPos = wordIter->indexOf("(");
+    if (nParenPos > 0)
+        return wordIter->copy(0, nParenPos);
+    else
+        return *wordIter;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

dbaccess/source/filter/hsqldb/utils.hxx

+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_UTILS_HXX
+#define INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_UTILS_HXX
+
+#include <rtl/ustring.hxx>
+
+namespace dbahsql
+{
+namespace utils
+{
+OUString getTableNameFromStmt(const OUString& sSql);
+}
+}
+
+#endif // INCLUDED_DBACCESS_SOURCE_FILTER_HSQLDB_UTILS_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */