package net.sourceforge.squirrel_sql.plugins.db2.exp;
/*
* Copyright (C) 2007 Rob Manning
* manningr@users.sourceforge.net
*
* 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
*/
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import net.sourceforge.squirrel_sql.client.session.ISession;
import net.sourceforge.squirrel_sql.client.session.schemainfo.ObjFilterMatcher;
import net.sourceforge.squirrel_sql.client.session.mainpanel.objecttree.INodeExpander;
import net.sourceforge.squirrel_sql.client.session.mainpanel.objecttree.ObjectTreeNode;
import net.sourceforge.squirrel_sql.fw.sql.DatabaseObjectInfo;
import net.sourceforge.squirrel_sql.fw.sql.DatabaseObjectType;
import net.sourceforge.squirrel_sql.fw.sql.IDatabaseObjectInfo;
import net.sourceforge.squirrel_sql.fw.sql.ISQLConnection;
import net.sourceforge.squirrel_sql.fw.sql.SQLDatabaseMetaData;
import net.sourceforge.squirrel_sql.fw.sql.SQLUtilities;
/**
* This class handles the expanding of the "Sequence Group"
* node. It will give a list of all the Sequences available in the schema.
*
* @author manningr
*/
public class SequenceParentExpander implements INodeExpander
{
/** SQL used to load sequence names */
private static final String SQL =
"select SEQNAME " +
"from SYSCAT.SEQUENCES " +
"WHERE SEQSCHEMA = ? " +
"AND SEQNAME like ? ";
/** SQL used to load sequence names on OS/400 */
private static final String OS_400_SQL =
"select sequence_name " +
"from qsys2.syssequences " +
"where sequence_schema = ? " +
"and sequence_name like ? ";
/** whether or not we are connected to OS/400 */
private boolean isOS400 = false;
/**
* Default ctor.
*/
public SequenceParentExpander(boolean isOS400)
{
super();
this.isOS400 = isOS400;
}
/**
* Create the child nodes for the passed parent node and return them. Note
* that this method should <B>not</B> actually add the child nodes to the
* parent node as this is taken care of in the caller.
*
* @param session Current session.
* @param node Node to be expanded.
*
* @return A list of <TT>ObjectTreeNode</TT> objects representing the child
* nodes for the passed node.
*/
public List<ObjectTreeNode> createChildren(ISession session, ObjectTreeNode parentNode)
throws SQLException
{
final List<ObjectTreeNode> childNodes = new ArrayList<ObjectTreeNode>();
final IDatabaseObjectInfo parentDbinfo = parentNode.getDatabaseObjectInfo();
final ISQLConnection conn = session.getSQLConnection();
final SQLDatabaseMetaData md = session.getSQLConnection().getSQLMetaData();
final String catalogName = parentDbinfo.getCatalogName();
final String schemaName = parentDbinfo.getSchemaName();
final ObjFilterMatcher filterMatcher = new ObjFilterMatcher(session.getProperties());
String sql = SQL;
if (isOS400) {
sql = OS_400_SQL;
}
final PreparedStatement pstmt = conn.prepareStatement(sql);
ResultSet rs = null;
try
{
pstmt.setString(1, schemaName);
pstmt.setString(2, filterMatcher.getSqlLikeMatchString());
rs = pstmt.executeQuery();
while (rs.next())
{
IDatabaseObjectInfo si = new DatabaseObjectInfo(catalogName,
schemaName, rs.getString(1),
DatabaseObjectType.SEQUENCE, md);
if(filterMatcher.matches(si.getSimpleName()))
{
childNodes.add(new ObjectTreeNode(session, si));
}
}
}
finally
{
SQLUtilities.closeResultSet(rs);
SQLUtilities.closeStatement(pstmt);
}
return childNodes;
}
}