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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 | |||||||||||||||
BuilderFacet.java | 80% | 85% | 80% | 82.9% |
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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.service.impl;
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import org.apache.commons.logging.Log;
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import org.apache.hivemind.ServiceImplementationFactoryParameters;
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import org.apache.hivemind.impl.BaseLocatable;
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import org.apache.hivemind.util.PropertyUtils;
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/**
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* Represents one facet of constructing a service implementation instance. A facet is either a
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* property to be set on the constructed instance, or a parameter to the instance class'
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* constructor. Facets are nested properties within
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* {@link org.apache.hivemind.service.impl.BuilderParameter}, and are used by
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* {@link org.apache.hivemind.service.impl.BuilderFactory}.
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*
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* @author Howard Lewis Ship
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*/
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public abstract class BuilderFacet extends BaseLocatable |
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{ |
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private String _propertyName;
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/**
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* Implemented in subclasses to provide a specific value for the facet (for use as a constructor
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* parameter, or as a value to set a property to).
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*
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* @param factoryParameters
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* the parameters that define the service point and its environment
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* @param targetType
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* the desired property type (extracted from the property type of the property to be
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* updated, when a property is known)
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*/
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public abstract Object getFacetValue(ServiceImplementationFactoryParameters factoryParameters,
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Class targetType); |
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public abstract boolean isAssignableToType( |
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ServiceImplementationFactoryParameters factoryParameters, Class targetType); |
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public String getPropertyName()
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{ |
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return _propertyName;
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} |
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public void setPropertyName(String string) |
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{ |
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_propertyName = string; |
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} |
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/**
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* Attempts to autowire a property of the target. This requires that
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* <ul>
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* <li>The facet type defines a default property name and facet type
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* <li>The facet instance does not have a specified property name
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* <li>The (default) property is writeable
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* <li>The (default) property is assignable from the facet type
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* </ul>
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* If all conditions are met, then the property is updated to the facet value, and the property
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* name is returned. In all other cases, null is returned.
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*
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* @param target
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* The service implementation being constructed
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* @param factoryParameters
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* the parameters that define the service point and its environment
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*/
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public String autowire(Object target, ServiceImplementationFactoryParameters factoryParameters)
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{ |
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if (_propertyName != null) |
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return null; |
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String defaultPropertyName = getDefaultPropertyName(); |
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if (defaultPropertyName == null) |
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return null; |
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if (!PropertyUtils.isWritable(target, defaultPropertyName))
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return null; |
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Class propertyType = PropertyUtils.getPropertyType(target, defaultPropertyName); |
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if (isAssignableToType(factoryParameters, propertyType))
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{ |
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Object facetValue = getFacetValue(factoryParameters, propertyType); |
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PropertyUtils.write(target, defaultPropertyName, facetValue); |
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Log log = factoryParameters.getLog(); |
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if (log.isDebugEnabled())
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log.debug("Autowired property " + defaultPropertyName + " to " + facetValue); |
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return defaultPropertyName;
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} |
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return null; |
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} |
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/**
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* Returns null. Subclasses can provide the default name for a property used by
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* {@link #autowire(Object, ServiceImplementationFactoryParameters)}.
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*/
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protected String getDefaultPropertyName()
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{ |
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return null; |
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} |
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/** @since 1.1 */
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public boolean canAutowireConstructorParameter() |
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{ |
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return false; |
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} |
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} |
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