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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 | |||||||||||||||
RuleUtils.java | 92.9% | 90.6% | 100% | 92% |
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// Copyright 2004, 2005 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.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hivemind.ApplicationRuntimeException;
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import org.apache.hivemind.Element;
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import org.apache.hivemind.ErrorHandler;
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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.SchemaProcessor;
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import org.apache.hivemind.schema.Translator;
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import org.apache.hivemind.util.PropertyUtils;
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/**
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* Static methods useful to {@link org.apache.hivemind.schema.Rule}s and
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* {@link org.apache.hivemind.schema.Translator}s.
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*
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* @author Howard Lewis Ship
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*/
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public class RuleUtils |
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{ |
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private static final Log LOG = LogFactory.getLog(RuleUtils.class); |
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/**
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* Used to convert a {@link org.apache.hivemind.schema.Translator}initializer string of the
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* form: <code><i>key</i>=<i>value</i>[,<i>key</i>=<i>value<i>]*</code> into a Map of
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* keys and values. The keys and values are Strings.
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*/
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public static Map convertInitializer(String initializer) |
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{ |
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if (HiveMind.isBlank(initializer))
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return Collections.EMPTY_MAP;
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Map result = new HashMap();
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int lastCommax = -1;
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int inputLength = initializer.length();
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while (lastCommax < inputLength)
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{ |
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int nextCommax = initializer.indexOf(',', lastCommax + 1);
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if (nextCommax < 0)
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nextCommax = inputLength; |
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String term = initializer.substring(lastCommax + 1, nextCommax); |
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int equalsx = term.indexOf('=');
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if (equalsx <= 0)
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throw new ApplicationRuntimeException(RulesMessages.invalidInitializer(initializer)); |
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String key = term.substring(0, equalsx); |
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String value = term.substring(equalsx + 1); |
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result.put(key, value); |
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lastCommax = nextCommax; |
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} |
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return result;
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} |
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/**
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* Invoked to process text from an attribute or from an element's content. Performs two jobs:
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* <ul>
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* <li>Convert localized message references to localized strings
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* <li>Expand symbols using
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* {@link org.apache.hivemind.Registry#expandSymbols(String, Location)}
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* </ul>
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* <p>
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* Note: if the input is a localized message then no symbol expansion takes place. Localized
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* message references are simply strings that begin with '%'. The remainder of the string is the
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* message key.
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* <p>
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* A null input value passes through unchanged.
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*/
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public static String processText(SchemaProcessor processor, Element element, String inputValue) |
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{ |
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if (inputValue == null) |
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return null; |
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Module contributingModule = processor.getContributingModule(); |
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if (inputValue.startsWith("%")) |
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{ |
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String key = inputValue.substring(1); |
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return contributingModule.getMessages().getMessage(key);
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} |
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return contributingModule.expandSymbols(inputValue, element.getLocation());
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} |
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/**
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* Sets a property of the target object to the given value. Logs an error if there is a problem.
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*/
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public static void setProperty(SchemaProcessor processor, Element element, String propertyName, |
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Object target, Object value) |
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{ |
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try
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{ |
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PropertyUtils.write(target, propertyName, value); |
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} |
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catch (Exception ex)
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{ |
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// Have to decide if we need to display the location of the rule
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// or the element.
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ErrorHandler errorHandler = processor.getContributingModule().getErrorHandler(); |
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errorHandler.error(LOG, RulesMessages.unableToSetElementProperty( |
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propertyName, |
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target, |
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processor, |
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element, |
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ex), element.getLocation(), ex); |
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} |
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} |
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/**
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* Convienience for invoking {@link Module#getTranslator(String)}.
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*
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* @param processor
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* the processor for the schema being converted
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* @param translator
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* the string identifying the translator to provide (may be null)
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* @return a translator obtained via the contributing module, or an instance of
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* {@link NullTranslator}
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*/
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public static Translator getTranslator(SchemaProcessor processor, String translator) |
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{ |
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if (translator == null) |
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return new NullTranslator(); |
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return processor.getContributingModule().getTranslator(translator);
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} |
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} |
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