| 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 | } |