Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ExpressionNode |
|
| 5.142857142857143;5.143 |
1 | package org.apache.commons.ognl; | |
2 | ||
3 | /* | |
4 | * Licensed to the Apache Software Foundation (ASF) under one | |
5 | * or more contributor license agreements. See the NOTICE file | |
6 | * distributed with this work for additional information | |
7 | * regarding copyright ownership. The ASF licenses this file | |
8 | * to you under the Apache License, Version 2.0 (the | |
9 | * "License"); you may not use this file except in compliance | |
10 | * with the License. You may obtain a copy of the License at | |
11 | * | |
12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
13 | * | |
14 | * Unless required by applicable law or agreed to in writing, | |
15 | * software distributed under the License is distributed on an | |
16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
17 | * KIND, either express or implied. See the License for the | |
18 | * specific language governing permissions and limitations | |
19 | * under the License. | |
20 | */ | |
21 | ||
22 | import org.apache.commons.ognl.enhance.ExpressionCompiler; | |
23 | ||
24 | /** | |
25 | * @author Luke Blanshard (blanshlu@netscape.net) | |
26 | * @author Drew Davidson (drew@ognl.org) | |
27 | */ | |
28 | public abstract class ExpressionNode | |
29 | extends SimpleNode | |
30 | { | |
31 | ||
32 | private static final long serialVersionUID = 9076228016268317598L; | |
33 | ||
34 | public ExpressionNode( int i ) | |
35 | { | |
36 | 651 | super( i ); |
37 | 651 | } |
38 | ||
39 | public ExpressionNode( OgnlParser p, int i ) | |
40 | { | |
41 | 0 | super( p, i ); |
42 | 0 | } |
43 | ||
44 | /** | |
45 | * Returns true iff this node is constant without respect to the children. | |
46 | */ | |
47 | @Override | |
48 | public boolean isNodeConstant( OgnlContext context ) | |
49 | throws OgnlException | |
50 | { | |
51 | 197 | return false; |
52 | } | |
53 | ||
54 | @Override | |
55 | public boolean isConstant( OgnlContext context ) | |
56 | throws OgnlException | |
57 | { | |
58 | 197 | boolean result = isNodeConstant( context ); |
59 | ||
60 | 197 | if ( ( children != null ) && ( children.length > 0 ) ) |
61 | { | |
62 | 197 | result = true; |
63 | 480 | for ( int i = 0; result && ( i < children.length ); ++i ) |
64 | { | |
65 | 283 | if ( children[i] instanceof SimpleNode ) |
66 | { | |
67 | 283 | result = ( (SimpleNode) children[i] ).isConstant( context ); |
68 | } | |
69 | else | |
70 | { | |
71 | 0 | result = false; |
72 | } | |
73 | } | |
74 | } | |
75 | 197 | return result; |
76 | } | |
77 | ||
78 | public String getExpressionOperator( int index ) | |
79 | { | |
80 | 0 | throw new RuntimeException( "unknown operator for " + OgnlParserTreeConstants.jjtNodeName[id] ); |
81 | } | |
82 | ||
83 | @Override | |
84 | public String toGetSourceString( OgnlContext context, Object target ) | |
85 | { | |
86 | 18 | StringBuilder result = |
87 | new StringBuilder( | |
88 | ( parent == null || NumericExpression.class.isAssignableFrom( parent.getClass() ) ) ? "" : "(" ); | |
89 | ||
90 | 18 | if ( ( children != null ) && ( children.length > 0 ) ) |
91 | { | |
92 | 36 | for ( int i = 0; i < children.length; ++i ) |
93 | { | |
94 | 18 | if ( i > 0 ) |
95 | { | |
96 | 0 | result.append( " " ).append( getExpressionOperator( i ) ).append( " " ); |
97 | } | |
98 | ||
99 | 18 | String value = children[i].toGetSourceString( context, target ); |
100 | ||
101 | 18 | if ( ( ASTProperty.class.isInstance( children[i] ) || ASTMethod.class.isInstance( children[i] ) |
102 | || ASTSequence.class.isInstance( children[i] ) || ASTChain.class.isInstance( children[i] ) ) | |
103 | && value != null && value.trim().length() > 0 ) | |
104 | { | |
105 | ||
106 | 6 | String pre = null; |
107 | 6 | if ( ASTMethod.class.isInstance( children[i] ) ) |
108 | { | |
109 | 1 | pre = (String) context.get( "_currentChain" ); |
110 | } | |
111 | ||
112 | 6 | if ( pre == null ) |
113 | { | |
114 | 6 | pre = ""; |
115 | } | |
116 | ||
117 | 6 | String cast = (String) context.remove( ExpressionCompiler.PRE_CAST ); |
118 | 6 | if ( cast == null ) |
119 | { | |
120 | 6 | cast = ""; |
121 | } | |
122 | ||
123 | 6 | value = |
124 | cast + ExpressionCompiler.getRootExpression( children[i], context.getRoot(), context ) + pre | |
125 | + value; | |
126 | } | |
127 | ||
128 | 18 | result.append( value ); |
129 | } | |
130 | } | |
131 | ||
132 | 18 | if ( parent != null && !NumericExpression.class.isAssignableFrom( parent.getClass() ) ) |
133 | { | |
134 | 8 | result.append( ")" ); |
135 | } | |
136 | ||
137 | 18 | return result.toString(); |
138 | } | |
139 | ||
140 | @Override | |
141 | public String toSetSourceString( OgnlContext context, Object target ) | |
142 | { | |
143 | 2 | StringBuilder sourceStringBuilder = new StringBuilder( parent == null ? "" : "(" ); |
144 | ||
145 | 2 | if ( ( children != null ) && ( children.length > 0 ) ) |
146 | { | |
147 | 2 | for ( int i = 0; i < children.length; ++i ) |
148 | { | |
149 | 2 | if ( i > 0 ) |
150 | { | |
151 | 0 | sourceStringBuilder.append( " " ).append( getExpressionOperator( i ) ).append( ' ' ); |
152 | } | |
153 | ||
154 | 2 | sourceStringBuilder.append( children[i].toSetSourceString( context, target ) ); |
155 | } | |
156 | } | |
157 | 0 | if ( parent != null ) |
158 | { | |
159 | 0 | sourceStringBuilder.append( ")" ); |
160 | } | |
161 | ||
162 | 0 | return sourceStringBuilder.toString(); |
163 | } | |
164 | } |