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1
10
11 package com.triactive.jdo.store;
12
13 import java.util.List  ;
14
15
16 class BinaryExpression extends SQLExpression
17 {
18 public BinaryExpression(QueryStatement qs)
19 {
20 super(qs);
21 }
22
23 public BinaryExpression(QueryStatement qs, QueryStatement.QueryColumn qsc)
24 {
25 super(qs, qsc);
26 }
27
28 public BinaryExpression(String functionName, List args)
29 {
30 super(functionName, args);
31 }
32
33 public BinaryExpression(SQLExpression operand1, DyadicOperator op, SQLExpression operand2)
34 {
35 super(operand1, op, operand2);
36 }
37
38 public BooleanExpression eq(SQLExpression expr)
39 {
40 if (expr instanceof NullLiteral)
41 return expr.eq(this);
42 else if (expr instanceof BinaryExpression)
43 return new BooleanExpression(this, OP_EQ, expr);
44 else
45 return super.eq(expr);
46 }
47
48 public BooleanExpression noteq(SQLExpression expr)
49 {
50 if (expr instanceof NullLiteral)
51 return expr.noteq(this);
52 else if (expr instanceof BinaryExpression)
53 return new BooleanExpression(this, OP_NOTEQ, expr);
54 else
55 return super.noteq(expr);
56 }
57
58 public BooleanExpression lt(SQLExpression expr)
59 {
60 if (expr instanceof BinaryExpression)
61 return new BooleanExpression(this, OP_LT, expr);
62 else
63 return super.lt(expr);
64 }
65
66 public BooleanExpression lteq(SQLExpression expr)
67 {
68 if (expr instanceof BinaryExpression)
69 return new BooleanExpression(this, OP_LTEQ, expr);
70 else
71 return super.lteq(expr);
72 }
73
74 public BooleanExpression gt(SQLExpression expr)
75 {
76 if (expr instanceof BinaryExpression)
77 return new BooleanExpression(this, OP_GT, expr);
78 else
79 return super.gt(expr);
80 }
81
82 public BooleanExpression gteq(SQLExpression expr)
83 {
84 if (expr instanceof BinaryExpression)
85 return new BooleanExpression(this, OP_GTEQ, expr);
86 else
87 return super.gteq(expr);
88 }
89
90 public SQLExpression add(SQLExpression expr)
91 {
92 if (expr instanceof BinaryExpression)
93 return new BinaryExpression(this, OP_CONCAT, expr);
94 else
95 return super.add(expr);
96 }
97
98 public BooleanExpression in(SQLExpression expr)
99 {
100 return new BooleanExpression(this, OP_IN, expr);
101 }
102 }
103 |
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