/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.db.sql;
import com.caucho.db.table.Column;
import com.caucho.db.table.Table;
import com.caucho.util.L10N;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.logging.Logger;
class UnboundStarExpr extends Expr {
private static final L10N L = new L10N(UnboundStarExpr.class);
private final String _table;
/**
* Creates an unbound identifier with just a column name.
*/
UnboundStarExpr()
{
_table = null;
}
/**
* Creates an unbound identifier with just a column name.
*/
UnboundStarExpr(String tableName)
{
_table = tableName;
}
public Expr bind(Query query)
throws SQLException
{
return bind(query.getFromItems());
}
public Expr bind(FromItem []fromItems)
throws SQLException
{
return this;
}
protected ArrayList<Expr> expand(FromItem []fromItems)
throws SQLException
{
ArrayList<Expr> exprs = new ArrayList<Expr>();
for (int i = 0; i < fromItems.length; i++) {
Table table = fromItems[i].getTable();
Column []columns = table.getColumns();
if (_table != null && ! fromItems[i].getName().equals(_table))
continue;
for (int j = 0; j < columns.length; j++) {
exprs.add(new UnboundIdentifierExpr(fromItems[i].getName(),
columns[j].getName()));
}
}
return exprs;
}
public String toString()
{
return "UnboundStarExpr[]";
}
}