/*
* 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 under the License.
*/
package com.hp.hpl.jena.sdb.layout2.hash;
import static com.hp.hpl.jena.sdb.sql.SQLUtils.sqlStr;
import java.sql.SQLException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.hp.hpl.jena.sdb.SDBException;
import com.hp.hpl.jena.sdb.layout2.FmtLayout2;
import com.hp.hpl.jena.sdb.layout2.TableDescNodes;
import com.hp.hpl.jena.sdb.layout2.TableDescQuads;
import com.hp.hpl.jena.sdb.layout2.TablePrefixes;
import com.hp.hpl.jena.sdb.layout2.TableDescTriples;
import com.hp.hpl.jena.sdb.sql.MySQLEngineType;
import com.hp.hpl.jena.sdb.sql.SDBConnection;
import com.hp.hpl.jena.sdb.sql.SDBExceptionSQL;
public class FmtLayout2HashMySQL extends FmtLayout2
{
static private Logger log = LoggerFactory.getLogger(FmtLayout2HashMySQL.class) ;
protected MySQLEngineType engineType ;
public FmtLayout2HashMySQL(SDBConnection connection, MySQLEngineType tableType)
{
super(connection) ;
engineType = tableType ;
if ( engineType == null )
{
log.error("Engine type is null") ;
throw new SDBException("Engine type is null") ;
}
}
@Override
protected void formatTableTriples()
{
dropTable(TableDescTriples.name()) ;
try {
connection().exec(sqlStr(
"CREATE TABLE "+TableDescTriples.name()+" (",
" s BIGINT NOT NULL ,",
" p BIGINT NOT NULL ,",
" o BIGINT NOT NULL ,",
" PRIMARY KEY (s, p, o)",
") ENGINE="+engineType.getEngineName()
)) ;
} catch (SQLException ex)
{
throw new SDBExceptionSQL("SQLException formatting table '"+TableDescTriples.name()+"'",ex) ;
}
}
@Override
protected void formatTableQuads()
{
dropTable(TableDescQuads.name()) ;
try {
connection().exec(sqlStr(
"CREATE TABLE "+TableDescQuads.name()+" (",
" g BIGINT NOT NULL ,",
" s BIGINT NOT NULL ,",
" p BIGINT NOT NULL ,",
" o BIGINT NOT NULL ,",
" PRIMARY KEY (g, s, p, o)",
") ENGINE="+engineType.getEngineName()
)) ;
} catch (SQLException ex)
{
throw new SDBExceptionSQL("SQLException formatting table '"+TableDescTriples.name()+"'",ex) ;
}
}
@Override
protected String syntaxDropIndex(String indexName, String table)
{
return String.format("DROP INDEX %s ON %s", indexName, table) ;
}
@Override
protected void formatTableNodes()
{
dropTable(TableDescNodes.name()) ;
try {
connection().exec(sqlStr ("CREATE TABLE "+TableDescNodes.name()+" (",
" hash BIGINT NOT NULL DEFAULT 0,",
" lex LONGTEXT BINARY CHARACTER SET utf8 ,",
" lang VARCHAR(10) BINARY CHARACTER SET utf8 NOT NULL default '',",
" datatype VARCHAR("+TableDescNodes.DatatypeUriLength+") BINARY CHARACTER SET utf8 NOT NULL default '',",
" type int unsigned NOT NULL default '0',",
" PRIMARY KEY Hash (hash)",
") ENGINE="+engineType.getEngineName()+" DEFAULT CHARSET=utf8;"
)) ;
} catch (SQLException ex)
{
throw new SDBExceptionSQL("SQLException formatting table '"+TableDescNodes.name()+"'",ex) ;
}
}
@Override
protected void formatTablePrefixes()
{
dropTable(TablePrefixes.name()) ;
try {
connection().exec(sqlStr(
"CREATE TABLE "+TablePrefixes.name()+" (",
" prefix VARCHAR("+TablePrefixes.prefixColWidth+") BINARY NOT NULL ,",
" uri VARCHAR("+TablePrefixes.uriColWidth+") BINARY NOT NULL ,",
" PRIMARY KEY (prefix)",
") ENGINE="+engineType.getEngineName()+" DEFAULT CHARSET=utf8"
)) ;
} catch (SQLException ex)
{
throw new SDBExceptionSQL("SQLException resetting table '"+TablePrefixes.name()+"'",ex) ;
}
}
@Override
protected void truncateTable(String tableName)
{
try {
// MySQL note: DELETE FROM is transactional, TRUNCATE is not
connection().exec("TRUNCATE "+tableName) ;
} catch (SQLException ex)
{ throw new SDBExceptionSQL("SQLException : Can't truncate table: "+tableName, ex) ; }
}
@Override
protected void dropTable(String tableName)
{
try {
connection().exec("DROP TABLE IF EXISTS "+tableName) ;
} catch (SQLException ex)
{ throw new SDBExceptionSQL("SQLException : Can't drop table: "+tableName, ex) ; }
}
}