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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
EnumerationTranslator.java | 100% | 100% | 100% | 100% |
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// Copyright 2004 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.hivemind.schema.rules;
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import java.lang.reflect.Field;
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import java.util.Map;
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import org.apache.hivemind.ApplicationRuntimeException;
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import org.apache.hivemind.HiveMind;
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import org.apache.hivemind.internal.Module;
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import org.apache.hivemind.schema.Translator;
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/**
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* Used to translate a set of strings to one of a number of constant values.
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* Each input string is matched against the name of a public static field
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* of a class. The name of the class, and the mappings, are provided
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* in the initializer.
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*
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* @author Howard Lewis Ship
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*/
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public class EnumerationTranslator implements Translator |
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{ |
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private Map _mappings;
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private String _className;
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private Class _class; |
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/**
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* Initialized the translator; the intitializer is the name of the class, a comma,
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* and a series of key=value mappings from the input values to the names
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* of the public static fields of the class.
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*/
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public EnumerationTranslator(String initializer)
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{ |
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int commax = initializer.indexOf(',');
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_className = initializer.substring(0, commax); |
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_mappings = RuleUtils.convertInitializer(initializer.substring(commax + 1)); |
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} |
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private synchronized Class getClass(Module contributingModule) |
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{ |
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if (_class == null) |
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_class = contributingModule.getClassResolver().findClass(_className);
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return _class; |
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} |
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public Object translate(Module contributingModule, Class propertyType, String inputValue)
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{ |
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if (HiveMind.isBlank(inputValue))
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return null; |
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Class c = getClass(contributingModule); |
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String fieldName = (String) _mappings.get(inputValue); |
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if (fieldName == null) |
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throw new ApplicationRuntimeException(RulesMessages.enumNotRecognized(inputValue)); |
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try
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{ |
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Field f = c.getField(fieldName); |
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return f.get(null); |
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} |
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catch (Exception ex)
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{ |
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throw new ApplicationRuntimeException(RulesMessages.enumError(c, fieldName, ex), ex); |
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} |
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} |
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} |
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