/*
* DBeaver - Universal Database Manager
* Copyright (C) 2013-2015 Denis Forveille (titou10.titou10@gmail.com)
* Copyright (C) 2010-2017 Serge Rider (serge@jkiss.org)
*
* Licensed 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 org.jkiss.dbeaver.ext.db2.model.cache;
import org.jkiss.code.NotNull;
import org.jkiss.dbeaver.DBException;
import org.jkiss.dbeaver.ext.db2.model.DB2Alias;
import org.jkiss.dbeaver.ext.db2.model.DB2DataSource;
import org.jkiss.dbeaver.ext.db2.model.DB2Schema;
import org.jkiss.dbeaver.ext.db2.model.dict.DB2TableType;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCPreparedStatement;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCResultSet;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCSession;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCStatement;
import org.jkiss.dbeaver.model.impl.jdbc.cache.JDBCObjectCache;
import java.sql.SQLException;
/**
* Cache for DB2 Aliases
*
* @author Denis Forveille
*/
public final class DB2AliasCache extends JDBCObjectCache<DB2Schema, DB2Alias> {
private static final String SQL_WITHOUT_MODULE_AND_SEQUALIAS;
private static final String SQL_FULL;
static {
StringBuilder sb1 = new StringBuilder(1024);
sb1.append(" SELECT 'TABLE' as TYPE ");
sb1.append(" , TABNAME AS NAME");
sb1.append(" , BASE_TABSCHEMA AS BASE_SCHEMA");
sb1.append(" , BASE_TABNAME AS BASE_NAME");
sb1.append(" FROM SYSCAT.TABLES");
sb1.append(" WHERE TABSCHEMA = ?"); // 1
sb1.append(" AND TYPE = '").append(DB2TableType.A.name()).append("'");
StringBuilder sb2 = new StringBuilder(256);
sb2.append(" UNION ALL");
sb2.append(" SELECT 'SEQUENCE' as TYPE ");
sb2.append(" , SEQNAME AS NAME");
sb2.append(" , BASE_SEQSCHEMA AS BASE_SCHEMA");
sb2.append(" , BASE_SEQNAME AS BASE_NAME");
sb2.append(" FROM SYSCAT.SEQUENCES");
sb2.append(" WHERE SEQSCHEMA = ?"); // 2
sb2.append(" AND SEQTYPE = '").append(DB2TableType.A.name()).append("'");
sb2.append(" UNION ALL");
sb2.append(" SELECT 'MODULE' as TYPE ");
sb2.append(" , MODULENAME AS NAME");
sb2.append(" , BASE_MODULESCHEMA AS BASE_SCHEMA");
sb2.append(" , BASE_MODULENAME AS BASE_NAME");
sb2.append(" FROM SYSCAT.MODULES");
sb2.append(" WHERE MODULESCHEMA = ?"); // 3
sb2.append(" AND MODULETYPE = '").append(DB2TableType.A.name()).append("'");
StringBuilder sb3 = new StringBuilder(64);
sb3.append(" ORDER BY NAME");
sb3.append(" , TYPE");
sb3.append(" WITH UR");
SQL_FULL = sb1.toString() + sb2.toString() + sb3.toString();
SQL_WITHOUT_MODULE_AND_SEQUALIAS = sb1.toString() + sb3.toString();
}
@Override
protected JDBCStatement prepareObjectsStatement(@NotNull JDBCSession session, @NotNull DB2Schema db2Schema) throws SQLException
{
DB2DataSource db2DataSource = db2Schema.getDataSource();
String sql;
if (db2DataSource.isAtLeastV9_7()) {
sql = SQL_FULL;
} else {
sql = SQL_WITHOUT_MODULE_AND_SEQUALIAS;
}
JDBCPreparedStatement dbStat = session.prepareStatement(sql);
dbStat.setString(1, db2Schema.getName());
if (db2DataSource.isAtLeastV9_7()) {
dbStat.setString(2, db2Schema.getName());
dbStat.setString(3, db2Schema.getName());
}
return dbStat;
}
protected DB2Alias fetchObject(@NotNull JDBCSession session, @NotNull DB2Schema db2Schema, @NotNull JDBCResultSet resultSet) throws SQLException, DBException
{
return new DB2Alias(session.getProgressMonitor(), db2Schema, resultSet);
}
}