mirror of
https://github.com/ebean-orm/ebean.git
synced 2024-04-21 10:51:47 +00:00
Change license to Apache2 and reformat
This commit is contained in:
rbygrave
@@ -1,274 +1,255 @@
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/**
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* Copyright (C) 2009 Authors
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*
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* This file is part of Ebean.
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*
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* Ebean is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* Ebean is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Ebean; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package com.avaje.ebeaninternal.server.loadcontext;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import com.avaje.ebean.bean.BeanLoader;
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import com.avaje.ebean.bean.EntityBean;
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import com.avaje.ebean.bean.EntityBeanIntercept;
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import com.avaje.ebean.bean.ObjectGraphNode;
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import com.avaje.ebean.bean.PersistenceContext;
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import com.avaje.ebeaninternal.api.LoadBeanContext;
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import com.avaje.ebeaninternal.api.LoadBeanRequest;
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import com.avaje.ebeaninternal.api.LoadContext;
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import com.avaje.ebeaninternal.api.SpiQuery;
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import com.avaje.ebeaninternal.server.core.OrmQueryRequest;
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import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
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import com.avaje.ebeaninternal.server.querydefn.OrmQueryProperties;
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/**
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* Default implementation of LoadBeanContext.
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*
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*/
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public class DLoadBeanContext implements LoadBeanContext, BeanLoader {
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private static final Logger logger = Logger.getLogger(DLoadBeanContext.class.getName());
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protected final DLoadContext parent;
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protected final BeanDescriptor<?> desc;
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protected final String path;
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protected final String fullPath;
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private final DLoadList<EntityBeanIntercept> weakList;
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private final OrmQueryProperties queryProps;
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private int batchSize;
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public DLoadBeanContext(DLoadContext parent, BeanDescriptor<?> desc, String path, int batchSize,
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OrmQueryProperties queryProps, DLoadList<EntityBeanIntercept> weakList) {
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this.parent = parent;
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this.desc = desc;
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this.path = path;
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this.batchSize = batchSize;
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this.queryProps = queryProps;
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this.weakList = weakList;
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if (parent.getRelativePath() == null) {
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this.fullPath = path;
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} else {
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this.fullPath = parent.getRelativePath() + "." + path;
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}
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}
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public void configureQuery(SpiQuery<?> query, String lazyLoadProperty) {
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// propagate the readOnly state
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if (parent.isReadOnly() != null) {
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query.setReadOnly(parent.isReadOnly());
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}
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query.setParentNode(getObjectGraphNode());
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query.setLazyLoadProperty(lazyLoadProperty);
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if (queryProps != null) {
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queryProps.configureBeanQuery(query);
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}
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if (parent.isUseAutofetchManager()) {
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query.setAutofetch(true);
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}
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}
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public String getFullPath() {
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return fullPath;
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}
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public PersistenceContext getPersistenceContext() {
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return parent.getPersistenceContext();
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}
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public OrmQueryProperties getQueryProps() {
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return queryProps;
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}
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public ObjectGraphNode getObjectGraphNode() {
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return parent.getObjectGraphNode(path);
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}
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public String getPath() {
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return path;
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}
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public String getName() {
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return parent.getEbeanServer().getName();
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}
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public int getBatchSize() {
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return batchSize;
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}
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public void setBatchSize(int batchSize) {
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this.batchSize = batchSize;
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}
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public BeanDescriptor<?> getBeanDescriptor() {
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return desc;
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}
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public LoadContext getGraphContext() {
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return parent;
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}
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public void register(EntityBeanIntercept ebi){
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int pos = weakList.add(ebi);
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ebi.setBeanLoader(pos, this, parent.getPersistenceContext());
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}
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/**
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* Check if we can load the bean from L2 cache. If so avoid loading from the DB.
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*/
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private boolean loadBeanFromCache(EntityBeanIntercept ebi, int position) {
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if (!desc.loadFromCache(ebi)) {
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return false;
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}
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// we loaded the bean from cache
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weakList.removeEntry(position);
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if (logger.isLoggable(Level.FINEST)) {
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logger.log(Level.FINEST, "Loading path:" + fullPath + " - bean loaded from L2 cache, position[" + position + "]");
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}
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return true;
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}
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/**
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* Load this bean and potentially a batch of similar beans.
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*/
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public void loadBean(EntityBeanIntercept ebi) {
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// A synchronized (this) is effectively held by EntityBeanIntercept.loadBean()
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if (desc.lazyLoadMany(ebi)) {
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// lazy load property was a Many
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return;
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}
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int position = ebi.getBeanLoaderIndex();
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boolean hitCache = !parent.isExcludeBeanCache() && desc.isBeanCaching();
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if (hitCache && loadBeanFromCache(ebi, position)) {
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// successfully hit the L2 cache so don't invoke DB lazy loading
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return;
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}
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// Get a batch of beans to lazy load
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List<EntityBeanIntercept> batch = null;
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try {
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batch = weakList.getLoadBatch(position, batchSize);
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} catch (IllegalStateException e) {
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logger.log(Level.SEVERE, "type["+desc.getFullName()+"] fullPath[" + fullPath + "] batchSize["+batchSize+"]", e);
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}
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if (hitCache && batchSize > 1) {
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// Check each of the beans in the batch to see if they are in the L2 cache.
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// Add more as necessary to make up our batch that will be loaded.
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batch = loadBeanCheckBatch(batch);
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}
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if (logger.isLoggable(Level.FINER)) {
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for (int i = 0; i < batch.size(); i++) {
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EntityBeanIntercept entityBeanIntercept = batch.get(i);
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EntityBean owner = entityBeanIntercept.getOwner();
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Object id = desc.getId(owner);
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logger.finer("LoadBean type["+owner.getClass().getName()+"] fullPath["+fullPath+"] id["+id+"] batchIndex["+i+"] beanLoaderIndex["+entityBeanIntercept.getBeanLoaderIndex()+"]");
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}
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}
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LoadBeanRequest req = new LoadBeanRequest(this, batch, null, batchSize, true, ebi.getLazyLoadProperty(), hitCache);
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parent.getEbeanServer().loadBean(req);
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}
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/**
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* Check each of the beans in the batch to see if they are in the cache.
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* Get more beans out as necessary to get our desired batch size.
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*/
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private List<EntityBeanIntercept> loadBeanCheckBatch(List<EntityBeanIntercept> batch) {
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List<EntityBeanIntercept> actualLoadBatch = new ArrayList<EntityBeanIntercept>(batchSize);
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List<EntityBeanIntercept> batchToCheck = batch;
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int loadedFromCache = 0;
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while (true) {
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// check each bean (not already checked) to see if it is in the cache
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for (int i = 0; i < batchToCheck.size(); i++) {
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if (!desc.loadFromCache(batchToCheck.get(i))) {
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actualLoadBatch.add(batchToCheck.get(i));
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} else {
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loadedFromCache++;
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if (logger.isLoggable(Level.FINEST)) {
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logger.log(Level.FINEST, "Loading path:" + fullPath + " - bean loaded from L2 cache(batch)");
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}
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}
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}
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if (batchToCheck.isEmpty()) {
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// we have exhausted all the beans that need lazy loading
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break;
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}
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int more = batchSize - actualLoadBatch.size();
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if (more <= 0 || loadedFromCache > 500) {
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break;
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}
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// get some more to check as we loaded some from L2 cache
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batchToCheck = weakList.getNextBatch(more);
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}
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return actualLoadBatch;
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}
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public void loadSecondaryQuery(OrmQueryRequest<?> parentRequest, int requestedBatchSize, boolean all) {
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synchronized (this) {
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do {
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List<EntityBeanIntercept> batch = weakList.getNextBatch(requestedBatchSize);
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if (batch.size() == 0) {
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// there are no beans to load
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if (logger.isLoggable(Level.FINEST)) {
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logger.log(Level.FINEST, "Loading path:" + fullPath + " - no more beans to load");
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}
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return;
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}
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boolean loadCache = false;
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LoadBeanRequest req = new LoadBeanRequest(this, batch, parentRequest.getTransaction(), requestedBatchSize, false, null, loadCache);
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if (logger.isLoggable(Level.FINEST)) {
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logger.log(Level.FINEST, "Loading path:" + fullPath + " - secondary query batch load [" + batch.size() + "] beans");
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}
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parent.getEbeanServer().loadBean(req);
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if (!all) {
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break;
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}
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} while (true);
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}
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}
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}
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package com.avaje.ebeaninternal.server.loadcontext;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import com.avaje.ebean.bean.BeanLoader;
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import com.avaje.ebean.bean.EntityBean;
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import com.avaje.ebean.bean.EntityBeanIntercept;
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import com.avaje.ebean.bean.ObjectGraphNode;
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import com.avaje.ebean.bean.PersistenceContext;
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import com.avaje.ebeaninternal.api.LoadBeanContext;
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import com.avaje.ebeaninternal.api.LoadBeanRequest;
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import com.avaje.ebeaninternal.api.LoadContext;
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import com.avaje.ebeaninternal.api.SpiQuery;
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import com.avaje.ebeaninternal.server.core.OrmQueryRequest;
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import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
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import com.avaje.ebeaninternal.server.querydefn.OrmQueryProperties;
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/**
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* Default implementation of LoadBeanContext.
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*
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*/
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public class DLoadBeanContext implements LoadBeanContext, BeanLoader {
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private static final Logger logger = Logger.getLogger(DLoadBeanContext.class.getName());
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protected final DLoadContext parent;
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protected final BeanDescriptor<?> desc;
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protected final String path;
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protected final String fullPath;
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private final DLoadList<EntityBeanIntercept> weakList;
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private final OrmQueryProperties queryProps;
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private int batchSize;
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public DLoadBeanContext(DLoadContext parent, BeanDescriptor<?> desc, String path, int batchSize,
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OrmQueryProperties queryProps, DLoadList<EntityBeanIntercept> weakList) {
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this.parent = parent;
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this.desc = desc;
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this.path = path;
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this.batchSize = batchSize;
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this.queryProps = queryProps;
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this.weakList = weakList;
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if (parent.getRelativePath() == null) {
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this.fullPath = path;
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} else {
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this.fullPath = parent.getRelativePath() + "." + path;
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}
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}
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public void configureQuery(SpiQuery<?> query, String lazyLoadProperty) {
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// propagate the readOnly state
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if (parent.isReadOnly() != null) {
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query.setReadOnly(parent.isReadOnly());
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}
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query.setParentNode(getObjectGraphNode());
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query.setLazyLoadProperty(lazyLoadProperty);
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|
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if (queryProps != null) {
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queryProps.configureBeanQuery(query);
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||||
}
|
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if (parent.isUseAutofetchManager()) {
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query.setAutofetch(true);
|
||||
}
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||||
}
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|
||||
public String getFullPath() {
|
||||
return fullPath;
|
||||
}
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||||
|
||||
public PersistenceContext getPersistenceContext() {
|
||||
return parent.getPersistenceContext();
|
||||
}
|
||||
|
||||
public OrmQueryProperties getQueryProps() {
|
||||
return queryProps;
|
||||
}
|
||||
|
||||
public ObjectGraphNode getObjectGraphNode() {
|
||||
return parent.getObjectGraphNode(path);
|
||||
}
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||||
|
||||
public String getPath() {
|
||||
return path;
|
||||
}
|
||||
|
||||
public String getName() {
|
||||
return parent.getEbeanServer().getName();
|
||||
}
|
||||
|
||||
public int getBatchSize() {
|
||||
return batchSize;
|
||||
}
|
||||
|
||||
public void setBatchSize(int batchSize) {
|
||||
this.batchSize = batchSize;
|
||||
}
|
||||
|
||||
public BeanDescriptor<?> getBeanDescriptor() {
|
||||
return desc;
|
||||
}
|
||||
|
||||
public LoadContext getGraphContext() {
|
||||
return parent;
|
||||
}
|
||||
|
||||
public void register(EntityBeanIntercept ebi){
|
||||
int pos = weakList.add(ebi);
|
||||
ebi.setBeanLoader(pos, this, parent.getPersistenceContext());
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if we can load the bean from L2 cache. If so avoid loading from the DB.
|
||||
*/
|
||||
private boolean loadBeanFromCache(EntityBeanIntercept ebi, int position) {
|
||||
|
||||
if (!desc.loadFromCache(ebi)) {
|
||||
return false;
|
||||
}
|
||||
// we loaded the bean from cache
|
||||
weakList.removeEntry(position);
|
||||
if (logger.isLoggable(Level.FINEST)) {
|
||||
logger.log(Level.FINEST, "Loading path:" + fullPath + " - bean loaded from L2 cache, position[" + position + "]");
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Load this bean and potentially a batch of similar beans.
|
||||
*/
|
||||
public void loadBean(EntityBeanIntercept ebi) {
|
||||
|
||||
// A synchronized (this) is effectively held by EntityBeanIntercept.loadBean()
|
||||
|
||||
if (desc.lazyLoadMany(ebi)) {
|
||||
// lazy load property was a Many
|
||||
return;
|
||||
}
|
||||
|
||||
int position = ebi.getBeanLoaderIndex();
|
||||
boolean hitCache = !parent.isExcludeBeanCache() && desc.isBeanCaching();
|
||||
|
||||
if (hitCache && loadBeanFromCache(ebi, position)) {
|
||||
// successfully hit the L2 cache so don't invoke DB lazy loading
|
||||
return;
|
||||
}
|
||||
|
||||
// Get a batch of beans to lazy load
|
||||
List<EntityBeanIntercept> batch = null;
|
||||
try {
|
||||
batch = weakList.getLoadBatch(position, batchSize);
|
||||
} catch (IllegalStateException e) {
|
||||
logger.log(Level.SEVERE, "type["+desc.getFullName()+"] fullPath[" + fullPath + "] batchSize["+batchSize+"]", e);
|
||||
}
|
||||
|
||||
if (hitCache && batchSize > 1) {
|
||||
// Check each of the beans in the batch to see if they are in the L2 cache.
|
||||
// Add more as necessary to make up our batch that will be loaded.
|
||||
batch = loadBeanCheckBatch(batch);
|
||||
}
|
||||
|
||||
if (logger.isLoggable(Level.FINER)) {
|
||||
for (int i = 0; i < batch.size(); i++) {
|
||||
|
||||
EntityBeanIntercept entityBeanIntercept = batch.get(i);
|
||||
EntityBean owner = entityBeanIntercept.getOwner();
|
||||
Object id = desc.getId(owner);
|
||||
|
||||
logger.finer("LoadBean type["+owner.getClass().getName()+"] fullPath["+fullPath+"] id["+id+"] batchIndex["+i+"] beanLoaderIndex["+entityBeanIntercept.getBeanLoaderIndex()+"]");
|
||||
}
|
||||
}
|
||||
|
||||
LoadBeanRequest req = new LoadBeanRequest(this, batch, null, batchSize, true, ebi.getLazyLoadProperty(), hitCache);
|
||||
parent.getEbeanServer().loadBean(req);
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Check each of the beans in the batch to see if they are in the cache.
|
||||
* Get more beans out as necessary to get our desired batch size.
|
||||
*/
|
||||
private List<EntityBeanIntercept> loadBeanCheckBatch(List<EntityBeanIntercept> batch) {
|
||||
|
||||
|
||||
List<EntityBeanIntercept> actualLoadBatch = new ArrayList<EntityBeanIntercept>(batchSize);
|
||||
List<EntityBeanIntercept> batchToCheck = batch;
|
||||
|
||||
int loadedFromCache = 0;
|
||||
|
||||
while (true) {
|
||||
// check each bean (not already checked) to see if it is in the cache
|
||||
for (int i = 0; i < batchToCheck.size(); i++) {
|
||||
if (!desc.loadFromCache(batchToCheck.get(i))) {
|
||||
actualLoadBatch.add(batchToCheck.get(i));
|
||||
} else {
|
||||
loadedFromCache++;
|
||||
if (logger.isLoggable(Level.FINEST)) {
|
||||
logger.log(Level.FINEST, "Loading path:" + fullPath + " - bean loaded from L2 cache(batch)");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (batchToCheck.isEmpty()) {
|
||||
// we have exhausted all the beans that need lazy loading
|
||||
break;
|
||||
}
|
||||
int more = batchSize - actualLoadBatch.size();
|
||||
if (more <= 0 || loadedFromCache > 500) {
|
||||
break;
|
||||
}
|
||||
// get some more to check as we loaded some from L2 cache
|
||||
batchToCheck = weakList.getNextBatch(more);
|
||||
}
|
||||
return actualLoadBatch;
|
||||
}
|
||||
|
||||
public void loadSecondaryQuery(OrmQueryRequest<?> parentRequest, int requestedBatchSize, boolean all) {
|
||||
|
||||
synchronized (this) {
|
||||
do {
|
||||
List<EntityBeanIntercept> batch = weakList.getNextBatch(requestedBatchSize);
|
||||
if (batch.size() == 0) {
|
||||
// there are no beans to load
|
||||
if (logger.isLoggable(Level.FINEST)) {
|
||||
logger.log(Level.FINEST, "Loading path:" + fullPath + " - no more beans to load");
|
||||
}
|
||||
return;
|
||||
}
|
||||
boolean loadCache = false;
|
||||
LoadBeanRequest req = new LoadBeanRequest(this, batch, parentRequest.getTransaction(), requestedBatchSize, false, null, loadCache);
|
||||
|
||||
if (logger.isLoggable(Level.FINEST)) {
|
||||
logger.log(Level.FINEST, "Loading path:" + fullPath + " - secondary query batch load [" + batch.size() + "] beans");
|
||||
}
|
||||
|
||||
parent.getEbeanServer().loadBean(req);
|
||||
if (!all) {
|
||||
break;
|
||||
}
|
||||
|
||||
} while (true);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user