/*
*
* SchemaCrawler
* http://sourceforge.net/projects/schemacrawler
* Copyright (c) 2000-2011, Sualeh Fatehi.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
package schemacrawler.crawl;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import schemacrawler.schemacrawler.Options;
import sf.util.Utility;
final class DatabaseSystemParameters
implements Options
{
private static final long serialVersionUID = -4734554820673397484L;
private static final Logger LOGGER = Logger
.getLogger(DatabaseSystemParameters.class.getName());
private final boolean supportsCatalogs;
private final boolean supportsSchemas;
private final String identifierQuoteString;
private final List<String> reservedWords;
DatabaseSystemParameters(final Connection connection)
throws SQLException
{
final DatabaseMetaData dbMetaData = connection.getMetaData();
supportsCatalogs = dbMetaData.supportsCatalogsInTableDefinitions();
LOGGER.log(Level.CONFIG, String
.format("Database %s catalogs", (supportsCatalogs? "supports"
: "does not support")));
supportsSchemas = dbMetaData.supportsSchemasInTableDefinitions();
LOGGER.log(Level.CONFIG, String
.format("Database %s schemas", (supportsSchemas? "supports"
: "does not support")));
identifierQuoteString = dbMetaData.getIdentifierQuoteString();
final Set<String> rawReservedWords = new HashSet<String>();
rawReservedWords.addAll(Arrays.asList(dbMetaData.getSQLKeywords()
.split(",")));
rawReservedWords.addAll(Arrays.asList(Utility
.readResourceFully("/sql2003_reserved_words.txt").split("\r\n")));
final List<String> reservedWordsList = new ArrayList<String>();
for (final String reservedWord: rawReservedWords)
{
reservedWordsList.add(reservedWord.trim().toUpperCase());
}
Collections.sort(reservedWordsList);
reservedWords = Collections.unmodifiableList(reservedWordsList);
}
String getIdentifierQuoteString()
{
return identifierQuoteString;
}
boolean isSupportsCatalogs()
{
return supportsCatalogs;
}
boolean isSupportsSchemas()
{
return supportsSchemas;
}
boolean needsToBeQuoted(final String name)
{
final boolean needsToBeQuoted;
if (name != null
&& identifierQuoteString != null
&& (Utility.containsWhitespace(name) || reservedWords.contains(name
.toUpperCase())))
{
needsToBeQuoted = true;
}
else
{
needsToBeQuoted = false;
}
return needsToBeQuoted;
}
}