|
1
61
62
63
64 package org.jaxen.expr;
65
66 import java.util.List  ;
67
68 abstract class DefaultTruthExpr extends DefaultBinaryExpr
69 {
70 DefaultTruthExpr(Expr lhs,
71 Expr rhs)
72 {
73 super( lhs,
74 rhs );
75 }
76
77 public String toString()
78 {
79 return "[(DefaultTruthExpr): " + getLHS() + ", " + getRHS() + "]";
80 }
81
82 protected boolean bothAreSets(Object lhs,
83 Object rhs)
84 {
85 return ( lhs instanceof List
86 &&
87 rhs instanceof List );
88 }
89
90 protected boolean eitherIsSet(Object lhs,
91 Object rhs)
92 {
93 return ( lhs instanceof List
94 ||
95 rhs instanceof List );
96 }
97
98 protected boolean isSet(Object obj)
99 {
100 return ( obj instanceof List );
101 }
102
103 protected boolean setIsEmpty( List set )
104 {
105 return (set == null || set.size() == 0);
106 }
107
108 protected boolean eitherIsBoolean(Object lhs,
109 Object rhs)
110 {
111 return ( lhs instanceof Boolean
112 ||
113 rhs instanceof Boolean );
114 }
115
116 protected boolean bothAreBoolean(Object lhs,
117 Object rhs)
118 {
119 return ( lhs instanceof Boolean
120 &&
121 rhs instanceof Boolean );
122 }
123
124 protected boolean eitherIsNumber(Object lhs,
125 Object rhs)
126 {
127 return ( lhs instanceof Number
128 ||
129 rhs instanceof Number );
130 }
131
132 }
133
134 |
Popular Tags |
Java API By Example, From Geeks To Geeks.