Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||
IPropertySource |
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| 1.0;1 |
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.engine; |
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16 | ||
17 | /** |
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18 | * A source for configuration properties. |
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19 | * |
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20 | * @author Howard Lewis Ship |
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21 | * @since 2.3 |
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22 | */ |
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23 | ||
24 | public interface IPropertySource |
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25 | { |
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26 | ||
27 | /** |
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28 | * Returns the value for a given property, or null if the source does not |
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29 | * provide a value for the named property. Implementations of |
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30 | * IPropertySource may use delegation to resolve the value (that is, if one |
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31 | * property source returns null, it may forward the request to another |
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32 | * source). |
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33 | * |
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34 | * @param propertyName |
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35 | * Name of the property to get. |
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36 | * |
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37 | * @return Value of property or null if none found. |
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38 | */ |
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39 | ||
40 | String getPropertyValue(String propertyName); |
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41 | } |