Java tutorial
/** * Copyright 2005-2014 The Kuali Foundation * * Licensed under the Educational Community License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.opensource.org/licenses/ecl2.php * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.kuali.rice.krad.datadictionary; import org.apache.commons.lang.StringUtils; import org.kuali.rice.krad.service.DataDictionaryService; import org.kuali.rice.krad.service.KRADServiceLocatorWeb; import org.springframework.beans.MutablePropertyValues; import org.springframework.beans.PropertyValue; import org.springframework.beans.factory.config.BeanDefinition; import org.springframework.beans.factory.config.BeanDefinitionHolder; import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; import org.springframework.beans.factory.config.TypedStringValue; /** * Base class for dictionary bean processors that provides utility methods * * @author Kuali Rice Team (rice.collab@kuali.org) */ public abstract class DictionaryBeanProcessorBase implements DictionaryBeanProcessor { /** * Retrieves the class for the object that will be created from the bean definition. Since the class might not * be configured on the bean definition, but by a parent, each parent bean definition is recursively checked for * a class until one is found * * @param beanDefinition bean definition to get class for * @param beanFactory bean factory that contains the bean definition * @return Class<?> class configured for the bean definition, or null */ protected Class<?> getBeanClass(BeanDefinition beanDefinition, ConfigurableListableBeanFactory beanFactory) { if (StringUtils.isNotBlank(beanDefinition.getBeanClassName())) { try { return Class.forName(beanDefinition.getBeanClassName()); } catch (ClassNotFoundException e) { // swallow exception and return null so bean is not processed return null; } } else if (StringUtils.isNotBlank(beanDefinition.getParentName())) { BeanDefinition parentBeanDefinition = beanFactory.getBeanDefinition(beanDefinition.getParentName()); if (parentBeanDefinition != null) { return getBeanClass(parentBeanDefinition, beanFactory); } } return null; } /** * Determines whether the given value is of String type and if so returns the string value * * @param value object value to check * @return String string value for object or null if object is not a string type */ protected String getStringValue(Object value) { if (value instanceof TypedStringValue) { TypedStringValue typedStringValue = (TypedStringValue) value; return typedStringValue.getValue(); } else if (value instanceof String) { return (String) value; } return null; } /** * Applies the given property name and value to the bean definition * * @param propertyPath name of the property to add value for * @param propertyValue value for the property * @param beanDefinition bean definition to add property value to */ protected void applyPropertyValueToBean(String propertyPath, String propertyValue, BeanDefinition beanDefinition) { applyPropertyValueToBean(propertyPath, propertyValue, beanDefinition.getPropertyValues()); } /** * Applies the given property name and value to given property values * * @param propertyPath name of the property to add value for * @param propertyValue value for the property * @param pvs property values to add property to */ protected void applyPropertyValueToBean(String propertyPath, String propertyValue, MutablePropertyValues pvs) { pvs.addPropertyValue(propertyPath, propertyValue); } /** * Determines if the given property value is a bean definition or bean definition holder and if * so returns the value as a bean definintion * * @param propertyValue property value to get bean definition from * @return property value as a bean definition or null if value does not contain a bean definition */ protected BeanDefinition getPropertyValueBeanDefinition(PropertyValue propertyValue) { BeanDefinition beanDefinition = null; Object value = propertyValue.getValue(); if ((value instanceof BeanDefinition) || (value instanceof BeanDefinitionHolder)) { if (propertyValue instanceof BeanDefinition) { beanDefinition = (BeanDefinition) propertyValue; } else { beanDefinition = ((BeanDefinitionHolder) value).getBeanDefinition(); } } return beanDefinition; } /** * Indicates whether the given bean name was generated by spring * * @param beanName bean name to check * @return boolean true if bean name is generated, false if not */ protected boolean isGeneratedBeanName(String beanName) { return StringUtils.isNotBlank(beanName) && (StringUtils.contains(beanName, "$") || StringUtils.contains(beanName, "#")); } /** * Returns an instance of the data dictionary service * * @return DataDictionaryService instance */ protected DataDictionaryService getDataDictionaryService() { return KRADServiceLocatorWeb.getDataDictionaryService(); } }