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| org.apache.commons.jexl.parser.ASTIdentifier |
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| 1 | /* |
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| 2 | * Copyright 2002-2006 The Apache Software Foundation. |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | ||
| 17 | package org.apache.commons.jexl.parser; |
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| 18 | ||
| 19 | import org.apache.commons.jexl.JexlContext; |
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| 20 | ||
| 21 | /** |
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| 22 | * Simple identifier - $foo or $foo.bar (both parts are identifiers). |
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| 23 | * |
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| 24 | * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a> |
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| 25 | * @version $Id: ASTIdentifier.java 398199 2006-04-29 16:30:05Z dion $ |
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| 26 | */ |
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| 27 | public class ASTIdentifier extends SimpleNode { |
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| 28 | /** the name of the variable. */ |
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| 29 | protected String val; |
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| 30 | ||
| 31 | /** |
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| 32 | * Create the node given an id. |
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| 33 | * |
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| 34 | * @param id node id. |
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| 35 | */ |
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| 36 | public ASTIdentifier(int id) { |
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| 37 | 0 | super(id); |
| 38 | 0 | } |
| 39 | ||
| 40 | /** |
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| 41 | * Create a node with the given parser and id. |
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| 42 | * |
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| 43 | * @param p a parser. |
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| 44 | * @param id node id. |
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| 45 | */ |
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| 46 | public ASTIdentifier(Parser p, int id) { |
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| 47 | 437 | super(p, id); |
| 48 | 437 | } |
| 49 | ||
| 50 | /** {@inheritDoc} */ |
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| 51 | public Object jjtAccept(ParserVisitor visitor, Object data) { |
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| 52 | 0 | return visitor.visit(this, data); |
| 53 | } |
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| 54 | ||
| 55 | /** {@inheritDoc} */ |
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| 56 | public Object value(JexlContext jc) throws Exception { |
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| 57 | 448 | return jc.getVars().get(val); |
| 58 | } |
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| 59 | ||
| 60 | /** |
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| 61 | * returns the value of itself applied to the object. We assume that an |
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| 62 | * identifier can be gotten via a get(String). |
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| 63 | * e.g. if we have bean.property, 'property' has been parsed as an identifier, |
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| 64 | * and we need to resolve the expression by calling the property getter. |
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| 65 | * |
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| 66 | * @param obj the object to evaluate against. |
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| 67 | * @param jc the {@link JexlContext}. |
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| 68 | * @throws Exception on any error. |
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| 69 | * @return the resulting value. |
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| 70 | * @see ASTArrayAccess#evaluateExpr(Object, Object) |
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| 71 | */ |
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| 72 | public Object execute(Object obj, JexlContext jc) throws Exception { |
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| 73 | 38 | return ASTArrayAccess.evaluateExpr(obj, val); |
| 74 | } |
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| 75 | ||
| 76 | /** |
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| 77 | * Gets the name of the variable. |
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| 78 | * @return the variable name. |
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| 79 | */ |
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| 80 | public String getIdentifierString() { |
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| 81 | 204 | return val; |
| 82 | } |
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| 83 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |