| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ConstantPropertyVariable |
|
| 1.75;1.75 |
| 1 | /* | |
| 2 | * Copyright (C) 1998-2000 Semiotek Inc. All Rights Reserved. | |
| 3 | * | |
| 4 | * Redistribution and use in source and binary forms, with or without | |
| 5 | * modification, are permitted under the terms of either of the following | |
| 6 | * Open Source licenses: | |
| 7 | * | |
| 8 | * The GNU General Public License, version 2, or any later version, as | |
| 9 | * published by the Free Software Foundation | |
| 10 | * (http://www.fsf.org/copyleft/gpl.html); | |
| 11 | * | |
| 12 | * or | |
| 13 | * | |
| 14 | * The Semiotek Public License (http://webmacro.org/LICENSE.) | |
| 15 | * | |
| 16 | * This software is provided "as is", with NO WARRANTY, not even the | |
| 17 | * implied warranties of fitness to purpose, or merchantability. You | |
| 18 | * assume all risks and liabilities associated with its use. | |
| 19 | * | |
| 20 | * See www.webmacro.org for more information on the WebMacro project. | |
| 21 | */ | |
| 22 | ||
| 23 | ||
| 24 | package org.webmacro.engine; | |
| 25 | ||
| 26 | import org.webmacro.Context; | |
| 27 | import org.webmacro.PropertyException; | |
| 28 | ||
| 29 | ||
| 30 | /** | |
| 31 | * Operate on bean properties of a compile-time constant | |
| 32 | * @author Brian Goetz | |
| 33 | * @since 1.1 | |
| 34 | */ | |
| 35 | public class ConstantPropertyVariable extends Variable | |
| 36 | { | |
| 37 | ||
| 38 | private Object value; | |
| 39 | ||
| 40 | /** | |
| 41 | * No special initialization | |
| 42 | */ | |
| 43 | ConstantPropertyVariable (Object value, Object names[]) | |
| 44 | { | |
| 45 | 0 | super(names); |
| 46 | 0 | this.value = value; |
| 47 | 0 | } |
| 48 | ||
| 49 | /** | |
| 50 | * Look up my value in the corresponding Map, possibly using introspection, | |
| 51 | * and return it | |
| 52 | * @exception PropertyException If the property does not exist | |
| 53 | */ | |
| 54 | public final Object getValue (Context context) | |
| 55 | throws PropertyException | |
| 56 | { | |
| 57 | 0 | if (value == null) |
| 58 | 0 | throw new PropertyException.NullValueException(_names[0].toString()); |
| 59 | else | |
| 60 | 0 | return context.getBroker() |
| 61 | ._propertyOperators.getProperty(context, value, _names, 1); | |
| 62 | } | |
| 63 | ||
| 64 | /** | |
| 65 | * Look up my the value of this variable in the specified Map, possibly | |
| 66 | * using introspection, and set it to the supplied value. | |
| 67 | * @exception PropertyException If the property does not exist | |
| 68 | */ | |
| 69 | public final void setValue (Context context, Object newValue) | |
| 70 | throws PropertyException | |
| 71 | { | |
| 72 | 0 | throw new PropertyException("Cannot set properties of a constant"); |
| 73 | } | |
| 74 | ||
| 75 | /** | |
| 76 | * Return a string representation naming the variable for | |
| 77 | * debugging purposes. | |
| 78 | */ | |
| 79 | public final String toString () | |
| 80 | { | |
| 81 | 0 | return "constant-property:" + getVariableName(); |
| 82 | } | |
| 83 | ||
| 84 | } |