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/**
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*
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*/
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package eu.etaxonomy.cdm.persistence.dao.initializer;
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import java.beans.PropertyDescriptor;
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import java.io.Serializable;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.lang.reflect.ParameterizedType;
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import java.lang.reflect.Type;
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import java.lang.reflect.TypeVariable;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.apache.commons.beanutils.PropertyUtils;
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import org.apache.log4j.Logger;
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import org.hibernate.Hibernate;
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import org.hibernate.HibernateException;
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import org.hibernate.Query;
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import org.hibernate.collection.internal.AbstractPersistentCollection;
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import org.hibernate.collection.internal.PersistentMap;
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import org.hibernate.proxy.HibernateProxy;
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import org.springframework.beans.factory.annotation.Autowired;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.persistence.dao.common.ICdmGenericDao;
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import eu.etaxonomy.cdm.persistence.dao.hibernate.HibernateBeanInitializer;
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/**
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* For now this is a test if we can improve performance for bean initializing
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* @author a.mueller
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* @date 2013-10-25
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*
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*/
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public class AdvancedBeanInitializer extends HibernateBeanInitializer {
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public static final Logger logger = Logger.getLogger(AdvancedBeanInitializer.class);
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@Autowired
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ICdmGenericDao genericDao;
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@Override
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public void initialize(Object bean, List<String> propertyPaths) {
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List<Object> beanList = new ArrayList<Object>(1);
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beanList.add(bean);
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initializeAll(beanList, propertyPaths);
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}
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//TODO optimize algorithm ..
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@Override
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public <C extends Collection<?>> C initializeAll(C beanList, List<String> propertyPaths) {
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if (beanList == null || beanList.isEmpty()){
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return beanList;
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}
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//autoinitialize
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for (Object bean : beanList){
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autoinitializeBean(bean);
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}
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if(propertyPaths == null){
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return beanList;
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}
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//new
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BeanInitNode rootPath = BeanInitNode.createInitTree(propertyPaths);
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if (logger.isTraceEnabled()){logger.trace(rootPath.toStringTree());}
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if(logger.isDebugEnabled()){ logger.debug(">> starting to initialize beanlist ; class(e.g.):" + beanList.iterator().next().getClass().getSimpleName());}
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rootPath.addBeans(beanList);
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initializeNodeRecursive(rootPath);
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//old - keep for safety (this may help to initialize those beans that are not yet correctly initialized by the AdvancedBeanInitializer
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if(logger.isTraceEnabled()){logger.trace("Start old initalizer ... ");};
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for (Object bean :beanList){
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Collections.sort(propertyPaths);
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for(String propPath : propertyPaths){
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// initializePropertyPath(bean, propPath);
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}
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}
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if(logger.isDebugEnabled()){ logger.debug(" Completed initialization of beanlist "); }
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return beanList;
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}
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//new
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private void initializeNodeRecursive(BeanInitNode rootPath) {
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initializeNode(rootPath);
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for (BeanInitNode childPath : rootPath.getChildrenList()){
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initializeNodeRecursive(childPath);
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}
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rootPath.resetBeans();
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}
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/**
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* Initializes the given single <code>propPath</code> String.
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*
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* @param bean
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* @param propPath
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*/
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private void initializeNode(BeanInitNode node) {
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if(logger.isDebugEnabled()){logger.debug(" processing " + node.toString());}
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if (node.isRoot()){
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return;
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}else if (node.isWildcard()){
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initializeNodeWildcard(node);
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} else {
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initializeNodeNoWildcard(node);
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}
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}
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// if propPath only contains a wildcard (* or $)
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// => do a batch initialization of *toOne or *toMany relations
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private void initializeNodeWildcard(BeanInitNode node) {
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// boolean initToMany = node.isToManyWildcard();
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Map<Class<?>, Set<Object>> parentBeans = node.getParentBeans();
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for (Class<?> clazz : parentBeans.keySet()){
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//new
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for (Object bean : parentBeans.get(clazz)){
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if(Collection.class.isAssignableFrom(bean.getClass())){
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// old: initializeAllEntries((Collection<?>)bean, true, initToMany); //TODO is this a possible case at all??
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throw new RuntimeException("Collection no longer expected in 'initializeNodeWildcard()'. Therefore an exception is thrown.");
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} else if(Map.class.isAssignableFrom(bean.getClass())) {
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// old: initializeAllEntries(((Map<?,?>)bean).values(), true, initToMany); ////TODO is this a possible case at all??
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throw new RuntimeException("Map no longer expected in 'initializeNodeWildcard()'. Therefore an exception is thrown.");
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} else{
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prepareBeanWildcardForBulkLoad(node, bean);
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}
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}
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//end new
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// initializeNodeWildcardOld(initToMany, beans, clazz); //if switched on move bulkLoadLazies up
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}
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//
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bulkLoadLazies(node);
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}
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/**
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* @param initToMany
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* @param beans
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* @param clazz
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*/
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private void initializeNodeWildcardOld(boolean initToMany,
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Map<Class<?>, Set<Object>> beans, Class<?> clazz) {
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for (Object bean : beans.get(clazz)){
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if(Collection.class.isAssignableFrom(bean.getClass())){
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initializeAllEntries((Collection<?>)bean, true, initToMany);
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} else if(Map.class.isAssignableFrom(bean.getClass())) {
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initializeAllEntries(((Map<?,?>)bean).values(), true, initToMany);
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} else{
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initializeBean(bean, true, initToMany);
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}
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}
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}
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private void prepareBeanWildcardForBulkLoad(BeanInitNode node, Object bean){
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if(logger.isTraceEnabled()){logger.trace(">> prepare bulk wildcard initialization of a bean of type " + bean.getClass().getSimpleName()); }
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Set<Class<?>> restrictions = new HashSet<Class<?>>();
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restrictions.add(CdmBase.class);
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if(node.isToManyWildcard()){
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restrictions.add(Collection.class);
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}
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Set<PropertyDescriptor> props = getProperties(bean, restrictions);
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for(PropertyDescriptor propertyDescriptor : props){
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try {
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String property = propertyDescriptor.getName();
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// invokeInitialization(bean, propertyDescriptor);
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Object propertyValue = PropertyUtils.getProperty( bean, property);
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preparePropertyValueForBulkLoadOrStore(node, bean, property, propertyValue );
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} catch (IllegalAccessException e) {
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logger.error("Illegal access on property " + propertyDescriptor.getName());
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} catch (InvocationTargetException e) {
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logger.info("Cannot invoke property " + propertyDescriptor.getName() + " not found");
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} catch (NoSuchMethodException e) {
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logger.info("Property " + propertyDescriptor.getName() + " not found");
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}
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}
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if(logger.isTraceEnabled()){logger.trace(" completed bulk wildcard initialization of a bean");}
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}
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// propPath contains either a single field or a nested path
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// split next path token off and keep the remaining as nestedPath
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private void initializeNodeNoWildcard(BeanInitNode node) {
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String property = node.getPath();
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int pos;
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// is the property indexed?
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Integer index = null;
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if((pos = property.indexOf('[')) > 0){
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String indexString = property.substring(pos + 1, property.indexOf(']'));
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index = Integer.valueOf(indexString);
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property = property.substring(0, pos);
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}
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//Class targetClass = HibernateProxyHelper.getClassWithoutInitializingProxy(bean); // used for debugging
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for (Class<?> parentClazz : node.getParentBeans().keySet()){
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if (logger.isTraceEnabled()){logger.trace(" invoke initialization on "+ node.toString()+ " beans of class " + parentClazz.getSimpleName() + " ... ");}
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Set<Object> parentBeans = node.getParentBeans().get(parentClazz);
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if (index != null){
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logger.warn("Property path index not yet implemented for 'new'");
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}
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//new
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for (Object parentBean : parentBeans){
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String propertyName = mapFieldToPropertyName(property, parentBean.getClass().getSimpleName());
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try{
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Object propertyValue = PropertyUtils.getProperty(parentBean, propertyName);
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preparePropertyValueForBulkLoadOrStore(node, parentBean, property, propertyValue);
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} catch (IllegalAccessException e) {
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String message = "Illegal access on property " + property;
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logger.error(message);
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throw new RuntimeException(message, e);
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} catch (InvocationTargetException e) {
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String message = "Cannot invoke property " + property + " not found";
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logger.error(message);
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throw new RuntimeException(message, e);
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} catch (NoSuchMethodException e) {
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String message = "Property " + propertyName + " not found for class " + parentClazz;
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logger.error(message);
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throw new RuntimeException(message, e);
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}
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}
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//end new
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// initializeNodeNoWildcardOld(node, property, index, parentBeans); //move bulkLoadLazies up again, if uncomment this line
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}
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bulkLoadLazies(node);
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}
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/**
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* @param node
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* @param property
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* @param index
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* @param parentBeans
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* @throws IllegalAccessException
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* @throws InvocationTargetException
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* @throws NoSuchMethodException
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*/
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private void initializeNodeNoWildcardOld(BeanInitNode node,
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String property, Integer index, Set<Object> parentBeans)
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throws IllegalAccessException, InvocationTargetException,
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NoSuchMethodException {
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for (Object bean : parentBeans){
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PropertyDescriptor propertyDescriptor = PropertyUtils.getPropertyDescriptor(bean, property);
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if (logger.isTraceEnabled()){logger.trace(" unwrap " + node.toStringNoWildcard() + " ... ");}
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// [1] initialize the bean named by property
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Object unwrappedPropertyBean = invokeInitialization(bean, propertyDescriptor);
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if (logger.isTraceEnabled()){logger.trace(" unwrap " + node.toStringNoWildcard() + " - DONE ");}
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// [2]
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// handle property
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if(unwrappedPropertyBean != null ){
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initializeNodeSinglePropertyOld(node, property, index, bean, unwrappedPropertyBean);
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}
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}
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}
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/**
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* @param node
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* @param propertyValue
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* @param parentBean
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* @param param
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*/
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private void preparePropertyValueForBulkLoadOrStore(BeanInitNode node, Object parentBean, String param, Object propertyValue) {
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BeanInitNode sibling = node.getSibling(param);
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if (propertyValue instanceof AbstractPersistentCollection ){
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//collections
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if (!node.hasWildcardToManySibling()){ //if wildcard sibling exists the lazies are already prepared there
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AbstractPersistentCollection collection = (AbstractPersistentCollection)propertyValue;
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if (collection.wasInitialized()){
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storeInitializedCollection(collection, node, param);
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}else{
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// Class<?> parentClass = parentBean.getClass();
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// int parentId = ((CdmBase)parentBean).getId();
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if (sibling != null){
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sibling.putLazyCollection(collection);
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}else{
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node.putLazyCollection(collection);
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}
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}
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}
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}else{
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//singles
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if (!node.hasWildcardToOneSibling()){ //if wildcard exists the lazies are already prepared there
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if (! Hibernate.isInitialized(propertyValue)){
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if (propertyValue instanceof HibernateProxy){
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Serializable id = ((HibernateProxy)propertyValue).getHibernateLazyInitializer().getIdentifier();
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Class<?> persistedClass = ((HibernateProxy)propertyValue).getHibernateLazyInitializer().getPersistentClass();
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if (sibling != null){
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sibling.putLazyBean(persistedClass, id);
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}else{
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node.putLazyBean(persistedClass, id);
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}
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324
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}else{
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logger.warn("Lazy value is not of type HibernateProxy. This is not yet handled.");
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}
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327
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}else if (propertyValue == null){
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// do nothing
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329
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}else{
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330
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if (propertyValue instanceof HibernateProxy){ //TODO remove hibernate dependency
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propertyValue = initializeInstance(propertyValue);
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332
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}
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333
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autoinitializeBean(propertyValue);
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334
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node.addBean(propertyValue);
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}
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336
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}
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337
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}
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338
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}
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339
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|
340
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private void autoinitializeBean(Object bean) {
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341
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invokePropertyAutoInitializers(bean);
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342
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}
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343
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|
344
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private void autoinitializeBean(CdmBase bean, AutoInit autoInit) {
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345
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for(AutoPropertyInitializer<CdmBase> init : autoInit.initlializers) {
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346
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init.initialize(bean);
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347
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}
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348
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}
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349
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|
350
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private void storeInitializedCollection(AbstractPersistentCollection persistedCollection,
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351
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BeanInitNode node, String param) {
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352
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Collection<?> collection;
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353
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354
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if (persistedCollection instanceof Collection) {
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355
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collection = (Collection<?>) persistedCollection;
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356
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}else if (persistedCollection instanceof Map) {
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357
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collection = ((Map<?,?>)persistedCollection).values();
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358
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}else{
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359
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throw new RuntimeException ("Non Map and non Collection cas not handled in storeInitializedCollection()");
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360
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}
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361
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for (Object value : collection){
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362
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preparePropertyValueForBulkLoadOrStore(node, null, param, value);
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363
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}
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364
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}
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365
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|
366
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private void bulkLoadLazies(BeanInitNode node) {
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367
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368
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if (logger.isTraceEnabled()){logger.trace("bulk load " + node);}
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369
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|
370
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//beans
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371
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for (Class<?> clazz : node.getLazyBeans().keySet()){
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372
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Set<Serializable> idSet = node.getLazyBeans().get(clazz);
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373
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if (idSet != null && ! idSet.isEmpty()){
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374
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375
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if (logger.isTraceEnabled()){logger.trace("bulk load beans of class " + clazz.getSimpleName());}
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376
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//TODO use entity name
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377
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String hql = " SELECT c FROM %s as c %s WHERE c.id IN (:idSet) ";
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378
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AutoInit autoInit = addAutoinitFetchLoading(clazz, "c");
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379
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hql = String.format(hql, clazz.getSimpleName(), autoInit.leftJoinFetch);
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380
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if (logger.isTraceEnabled()){logger.trace(hql);}
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381
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Query query = genericDao.getHqlQuery(hql);
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382
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query.setParameterList("idSet", idSet);
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383
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List<Object> list = query.list();
|
384
|
|
385
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if (logger.isTraceEnabled()){logger.trace("initialize bulk loaded beans of class " + clazz.getSimpleName());}
|
386
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for (Object object : list){
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387
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if (object instanceof HibernateProxy){ //TODO remove hibernate dependency
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388
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object = initializeInstance(object);
|
389
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}
|
390
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autoinitializeBean((CdmBase)object, autoInit);
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391
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node.addBean(object);
|
392
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}
|
393
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if (logger.isTraceEnabled()){logger.trace("bulk load - DONE");}
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394
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}
|
395
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}
|
396
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node.resetLazyBeans();
|
397
|
|
398
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//collections
|
399
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for (Class<?> ownerClazz : node.getLazyCollections().keySet()){
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400
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Map<String, Set<Serializable>> lazyParams = node.getLazyCollections().get(ownerClazz);
|
401
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for (String param : lazyParams.keySet()){
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402
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Set<Serializable> idSet = lazyParams.get(param);
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403
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if (idSet != null && ! idSet.isEmpty()){
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404
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if (logger.isTraceEnabled()){logger.trace("bulk load " + node + " collections ; ownerClass=" + ownerClazz.getSimpleName() + " ; param = " + param);}
|
405
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|
406
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Type collectionEntitiyType = null;
|
407
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PropertyDescriptor[] descriptors = PropertyUtils.getPropertyDescriptors(ownerClazz);
|
408
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for(PropertyDescriptor d : descriptors) {
|
409
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if(d.getName().equals(param)) {
|
410
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Method readMethod = d.getReadMethod();
|
411
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ParameterizedType pt = (ParameterizedType) readMethod.getGenericReturnType();
|
412
|
Type[] actualTypeArguments = pt.getActualTypeArguments();
|
413
|
if(actualTypeArguments.length == 2) {
|
414
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// this must be a map of <Language, String> (aka LanguageString) there is no other case like this in the cdm
|
415
|
// in case of Maps the returned Collection will be the Collection of the values, so collectionEntitiyType is the
|
416
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// second typeArgument
|
417
|
collectionEntitiyType = actualTypeArguments[1];
|
418
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} else {
|
419
|
collectionEntitiyType = actualTypeArguments[0];
|
420
|
}
|
421
|
if(collectionEntitiyType instanceof TypeVariable) {
|
422
|
collectionEntitiyType = ((TypeVariable)collectionEntitiyType).getBounds()[0];
|
423
|
}
|
424
|
}
|
425
|
}
|
426
|
|
427
|
//TODO use entity name ??
|
428
|
//get from repository
|
429
|
List<Object[]> list;
|
430
|
String hql = "SELECT oc " +
|
431
|
" FROM %s as oc LEFT JOIN FETCH oc.%s as col %s" +
|
432
|
" WHERE oc.id IN (:idSet) ";
|
433
|
|
434
|
AutoInit autoInit = addAutoinitFetchLoading((Class)collectionEntitiyType, "col");
|
435
|
hql = String.format(hql, ownerClazz.getSimpleName(), param,
|
436
|
autoInit.leftJoinFetch);
|
437
|
|
438
|
try {
|
439
|
if (logger.isTraceEnabled()){logger.trace(hql);}
|
440
|
Query query = genericDao.getHqlQuery(hql);
|
441
|
query.setParameterList("idSet", idSet);
|
442
|
list = query.list();
|
443
|
if (logger.isTraceEnabled()){logger.trace("size of retrieved list is " + list.size());}
|
444
|
} catch (HibernateException e) {
|
445
|
e.printStackTrace();
|
446
|
throw e;
|
447
|
}
|
448
|
|
449
|
//getTarget and add to child node
|
450
|
if (logger.isTraceEnabled()){logger.trace("initialize bulk loaded " + node + " collections - DONE");}
|
451
|
for (Object parentBean : list){
|
452
|
try {
|
453
|
Object propValue = PropertyUtils.getProperty(
|
454
|
parentBean,
|
455
|
mapFieldToPropertyName(param, parentBean.getClass().getSimpleName())
|
456
|
);
|
457
|
|
458
|
if (propValue == null){
|
459
|
logger.trace("Collection is null");
|
460
|
}else {
|
461
|
if(propValue instanceof PersistentMap) {
|
462
|
propValue = ((PersistentMap)propValue).values();
|
463
|
}
|
464
|
for(Object newBean : (Collection<Object>)propValue ) {
|
465
|
if(newBean instanceof HibernateProxy){
|
466
|
newBean = initializeInstance(newBean);
|
467
|
}
|
468
|
|
469
|
autoinitializeBean((CdmBase)newBean, autoInit);
|
470
|
|
471
|
node.addBean(newBean);
|
472
|
}
|
473
|
}
|
474
|
} catch (Exception e) {
|
475
|
// TODO better throw an exception ?
|
476
|
logger.error("error while getting collection property", e);
|
477
|
}
|
478
|
}
|
479
|
if (logger.isTraceEnabled()){logger.trace("bulk load " + node + " collections - DONE");}
|
480
|
}
|
481
|
}
|
482
|
}
|
483
|
for (AbstractPersistentCollection collection : node.getUninitializedCollections()){
|
484
|
if (! collection.wasInitialized()){ //should not happen anymore
|
485
|
collection.forceInitialization();
|
486
|
if (logger.isTraceEnabled()){logger.trace("forceInitialization of collection " + collection);}
|
487
|
} else {
|
488
|
if (logger.isTraceEnabled()){logger.trace("collection " + collection + " is initialized - OK!");}
|
489
|
}
|
490
|
}
|
491
|
|
492
|
node.resetLazyCollections();
|
493
|
|
494
|
if (logger.isDebugEnabled()){logger.debug("bulk load " + node + " - DONE ");}
|
495
|
|
496
|
}
|
497
|
|
498
|
|
499
|
private AutoInit addAutoinitFetchLoading(Class<?> clazz, String beanAlias) {
|
500
|
|
501
|
AutoInit autoInit = new AutoInit();
|
502
|
if(clazz != null) {
|
503
|
Set<AutoPropertyInitializer<CdmBase>> inits = getAutoInitializers(clazz);
|
504
|
for (AutoPropertyInitializer<CdmBase> init: inits){
|
505
|
try {
|
506
|
autoInit.leftJoinFetch +=init.hibernateFetchJoin(clazz, beanAlias);
|
507
|
} catch (Exception e) {
|
508
|
// the AutoPropertyInitializer is not supporting LEFT JOIN FETCH so it needs to be
|
509
|
// used explicitly
|
510
|
autoInit.initlializers.add(init);
|
511
|
}
|
512
|
|
513
|
}
|
514
|
}
|
515
|
return autoInit;
|
516
|
}
|
517
|
|
518
|
private Set<AutoPropertyInitializer<CdmBase>> getAutoInitializers(Class<?> clazz) {
|
519
|
Set<AutoPropertyInitializer<CdmBase>> result = new HashSet<AutoPropertyInitializer<CdmBase>>();
|
520
|
for(Class<? extends CdmBase> superClass : getBeanAutoInitializers().keySet()){
|
521
|
if(superClass.isAssignableFrom(clazz)){
|
522
|
result.add(getBeanAutoInitializers().get(superClass));
|
523
|
}
|
524
|
}
|
525
|
return result;
|
526
|
}
|
527
|
|
528
|
/**
|
529
|
* Rename hibernate (field) attribute to Bean property name, due to bean inconsistencies
|
530
|
* #3841
|
531
|
* @param param
|
532
|
* @param ownerClass
|
533
|
* @return
|
534
|
*/
|
535
|
private String mapFieldToPropertyName(String param, String ownerClass) {
|
536
|
if (ownerClass.contains("Description") && param.equals("descriptionElements")){
|
537
|
return "elements";
|
538
|
}
|
539
|
if (ownerClass.startsWith("FeatureNode") && param.equals("children")) {
|
540
|
return "childNodes";
|
541
|
}
|
542
|
if (ownerClass.startsWith("Media") && param.equals("description")) {
|
543
|
return "allDescriptions";
|
544
|
}
|
545
|
else{
|
546
|
return param;
|
547
|
}
|
548
|
}
|
549
|
|
550
|
/**
|
551
|
* @param node
|
552
|
* @param property
|
553
|
* @param index
|
554
|
* @param bean
|
555
|
* @param unwrappedPropertyBean
|
556
|
*/
|
557
|
private void initializeNodeSinglePropertyOld(BeanInitNode node, String property,
|
558
|
Integer index, Object bean, Object unwrappedPropertyBean) {
|
559
|
Collection<?> collection = null;
|
560
|
if(Map.class.isAssignableFrom(unwrappedPropertyBean.getClass())) {
|
561
|
collection = ((Map<?,?>)unwrappedPropertyBean).values();
|
562
|
}else if (Collection.class.isAssignableFrom(unwrappedPropertyBean.getClass())) {
|
563
|
collection = (Collection<?>) unwrappedPropertyBean;
|
564
|
}
|
565
|
if (collection != null){
|
566
|
//collection or map
|
567
|
if (logger.isTraceEnabled()){logger.trace(" initialize collection for " + node.toStringNoWildcard() + " ... ");}
|
568
|
int i = 0;
|
569
|
for (Object entrybean : collection) {
|
570
|
if(index == null){
|
571
|
node.addBean(entrybean);
|
572
|
} else if(index.equals(i)){
|
573
|
node.addBean(entrybean);
|
574
|
break;
|
575
|
}
|
576
|
i++;
|
577
|
}
|
578
|
if (logger.isTraceEnabled()){logger.trace(" initialize collection for " + node.toString() + " - DONE ");}
|
579
|
|
580
|
}else {
|
581
|
// nested bean
|
582
|
node.addBean(unwrappedPropertyBean);
|
583
|
setProperty(bean, property, unwrappedPropertyBean);
|
584
|
}
|
585
|
}
|
586
|
|
587
|
private class AutoInit{
|
588
|
|
589
|
String leftJoinFetch = "";
|
590
|
Set<AutoPropertyInitializer<CdmBase>> initlializers = new HashSet<AutoPropertyInitializer<CdmBase>>();
|
591
|
|
592
|
/**
|
593
|
* @param leftJoinFetch
|
594
|
* @param initlializers
|
595
|
*/
|
596
|
public AutoInit() {
|
597
|
}
|
598
|
}
|
599
|
}
|