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1
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
49 UnboundStarExpr()
50 {
51 _table = null;
52 }
53
54
57 UnboundStarExpr(String tableName)
58 {
59 _table = tableName;
60 }
61
62 protected Expr bind(Query query)
63 throws SQLException
64 {
65 return bind(query.getFromItems());
66 }
67
68 protected Expr bind(FromItem []fromItems)
69 throws SQLException
70 {
71 return this;
72 }
73
74 protected ArrayList <Expr> expand(FromItem []fromItems)
75 throws SQLException
76 {
77 ArrayList <Expr> exprs = new ArrayList <Expr>();
78
79 for (int i = 0; i < fromItems.length; i++) {
80 Table table = fromItems[i].getTable();
81 Column []columns = table.getColumns();
82
83 if (_table != null && ! fromItems[i].getName().equals(_table))
84 continue;
85
86 for (int j = 0; j < columns.length; j++) {
87 exprs.add(new UnboundIdentifierExpr(fromItems[i].getName(),
88 columns[j].getName()));
89 }
90 }
91
92 return exprs;
93 }
94
95 public String toString()
96 {
97 return "UnboundStarExpr[]";
98 }
99 }
100 |
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