Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
InputSymbolToken |
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| 3.0;3 |
1 | // Copyright 2004, 2005 The Apache Software Foundation |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | ||
15 | package org.apache.tapestry.script; |
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16 | ||
17 | import org.apache.hivemind.ApplicationRuntimeException; |
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18 | import org.apache.hivemind.Location; |
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19 | import org.apache.tapestry.Tapestry; |
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20 | ||
21 | /** |
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22 | * A token that validates that an input symbol exists or is of a |
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23 | * declared type. |
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24 | * |
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25 | * |
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26 | * @author Howard Lewis Ship |
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27 | * @since 2.2 |
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28 | * |
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29 | **/ |
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30 | ||
31 | class InputSymbolToken extends AbstractToken |
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32 | { |
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33 | private String _key; |
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34 | private Class _class; |
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35 | private boolean _required; |
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36 | ||
37 | InputSymbolToken(String key, Class clazz, boolean required, Location location) |
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38 | { |
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39 | 4 | super(location); |
40 | ||
41 | 4 | _key = key; |
42 | 4 | _class = clazz; |
43 | 4 | _required = required; |
44 | 4 | } |
45 | ||
46 | public void write(StringBuffer buffer, ScriptSession session) |
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47 | { |
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48 | 4 | Object value = session.getSymbols().get(_key); |
49 | ||
50 | 4 | if (_required && value == null) |
51 | 1 | throw new ApplicationRuntimeException( |
52 | Tapestry.format("InputSymbolToken.required", _key), |
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53 | getLocation(), |
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54 | null); |
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55 | ||
56 | 3 | if (value != null && _class != null && !_class.isAssignableFrom(value.getClass())) |
57 | 1 | throw new ApplicationRuntimeException( |
58 | Tapestry.format( |
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59 | "InputSymbolToken.wrong-type", |
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60 | _key, |
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61 | value.getClass().getName(), |
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62 | _class.getName()), |
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63 | getLocation(), |
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64 | null); |
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65 | 2 | } |
66 | ||
67 | } |