01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.db.sql;
30:
31: import com.caucho.db.table.Column;
32: import com.caucho.db.table.Table;
33: import com.caucho.log.Log;
34: import com.caucho.util.L10N;
35:
36: import java.sql.SQLException;
37: import java.util.ArrayList;
38: import java.util.logging.Logger;
39:
40: class UnboundStarExpr extends Expr {
41: private static final L10N L = new L10N(UnboundStarExpr.class);
42: private static final Logger log = Log.open(UnboundStarExpr.class);
43:
44: private final String _table;
45:
46: /**
47: * Creates an unbound identifier with just a column name.
48: */
49: UnboundStarExpr() {
50: _table = null;
51: }
52:
53: /**
54: * Creates an unbound identifier with just a column name.
55: */
56: UnboundStarExpr(String tableName) {
57: _table = tableName;
58: }
59:
60: protected Expr bind(Query query) throws SQLException {
61: return bind(query.getFromItems());
62: }
63:
64: protected Expr bind(FromItem[] fromItems) throws SQLException {
65: return this ;
66: }
67:
68: protected ArrayList<Expr> expand(FromItem[] fromItems)
69: throws SQLException {
70: ArrayList<Expr> exprs = new ArrayList<Expr>();
71:
72: for (int i = 0; i < fromItems.length; i++) {
73: Table table = fromItems[i].getTable();
74: Column[] columns = table.getColumns();
75:
76: if (_table != null
77: && !fromItems[i].getName().equals(_table))
78: continue;
79:
80: for (int j = 0; j < columns.length; j++) {
81: exprs.add(new UnboundIdentifierExpr(fromItems[i]
82: .getName(), columns[j].getName()));
83: }
84: }
85:
86: return exprs;
87: }
88:
89: public String toString() {
90: return "UnboundStarExpr[]";
91: }
92: }
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