Java tutorial
/* * Copyright (c) 2000-2003 Netspective Communications LLC. All rights reserved. * * Netspective Communications LLC ("Netspective") permits redistribution, modification and use of this file in source * and binary form ("The Software") under the Netspective Source License ("NSL" or "The License"). The following * conditions are provided as a summary of the NSL but the NSL remains the canonical license and must be accepted * before using The Software. Any use of The Software indicates agreement with the NSL. * * 1. Each copy or derived work of The Software must preserve the copyright notice and this notice unmodified. * * 2. Redistribution of The Software is allowed in object code form only (as Java .class files or a .jar file * containing the .class files) and only as part of an application that uses The Software as part of its primary * functionality. 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We suggest using the "powered by Netspective" button or creating * a "powered by Netspective(tm)" link to http://www.netspective.com for each application using The Software. * * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, * ARE HEREBY DISCLAIMED. * * NETSPECTIVE AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE OR ANY THIRD PARTY AS A * RESULT OF USING OR DISTRIBUTING THE SOFTWARE. IN NO EVENT WILL NETSPECTIVE OR ITS LICENSORS BE LIABLE FOR ANY LOST * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THE SOFTWARE, EVEN * IF HE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * @author Shahid N. Shah */ /* * Copyright (c) 2005 Your Corporation. All Rights Reserved. */ package com.medigy.persist.util; import com.medigy.persist.reference.CachedReferenceEntity; import com.medigy.persist.reference.ReferenceEntity; import com.medigy.persist.reference.custom.CachedCustomReferenceEntity; import com.medigy.persist.reference.custom.CustomReferenceEntity; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.HibernateException; import org.hibernate.cfg.AnnotationConfiguration; import org.hibernate.cfg.Configuration; import org.hibernate.mapping.PersistentClass; import java.util.HashMap; import java.util.Iterator; import java.util.Map; public class HibernateConfiguration extends AnnotationConfiguration { private static final Log log = LogFactory.getLog(HibernateConfiguration.class); private final Map<Class, Class> referenceEntitiesAndCachesMap = new HashMap<Class, Class>(); private final Map<Class, Class> customReferenceEntitiesAndCachesMap = new HashMap<Class, Class>(); public HibernateConfiguration() { setNamingStrategy(HibernateNamingStrategy.getInstance()); } public Map<Class, Class> getReferenceEntitiesAndCachesMap() { return referenceEntitiesAndCachesMap; } public Map<Class, Class> getCustomReferenceEntitiesAndCachesMap() { return customReferenceEntitiesAndCachesMap; } public Configuration configure(String string) throws HibernateException { final Configuration configuration = super.configure(string); registerReferenceEntitiesAndCaches(); return configuration; } @Override public void buildMappings() { super.buildMappings(); registerReferenceEntitiesAndCaches(); if (log.isInfoEnabled()) log.info("Registered reference entities and caches."); } public void registerReferenceEntitiesAndCaches() { final Iterator classMappings = getClassMappings(); while (classMappings.hasNext()) { Class aClass = ((PersistentClass) classMappings.next()).getMappedClass(); //(Class) classMappings.next(); if (ReferenceEntity.class.isAssignableFrom(aClass)) { boolean foundCache = false; for (final Class ic : aClass.getClasses()) { if (CachedReferenceEntity.class.isAssignableFrom(ic)) { if (ic.isEnum()) { referenceEntitiesAndCachesMap.put(aClass, ic); foundCache = true; } else throw new HibernateException(ic + " must be an enum since " + aClass + " is a " + ReferenceEntity.class.getName()); break; } } if (!foundCache) log.warn(aClass + " is marked as a ReferenceEntity but does not contain a ReferenceEntityCache enum."); // TODO: find out how to ensure the new mapping for reference type is immutable and read only // final PersistentClass pClass = getClassMapping(aClass.getLabel()); } else if (CustomReferenceEntity.class.isAssignableFrom(aClass)) { for (final Class ic : aClass.getClasses()) { if (CachedCustomReferenceEntity.class.isAssignableFrom(ic)) { if (ic.isEnum()) { customReferenceEntitiesAndCachesMap.put(aClass, ic); } else throw new HibernateException(ic + " must be an enum since " + aClass + " is a " + CachedCustomReferenceEntity.class.getName()); break; } } // if no cache is found, its ok since these are custom } } } }