DATAMONGO-1858 - Fix line endings to LF.
This commit is contained in:
Mark Paluch
@@ -1,197 +1,197 @@
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/*
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* Copyright 2011-2016 the original author or authors.
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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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*/
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package org.springframework.data.mongodb.crossstore;
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import javax.persistence.EntityManagerFactory;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.dao.DataAccessException;
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import org.springframework.dao.DataAccessResourceFailureException;
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import org.springframework.dao.DataIntegrityViolationException;
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import org.springframework.data.crossstore.ChangeSet;
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import org.springframework.data.crossstore.ChangeSetBacked;
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import org.springframework.data.crossstore.ChangeSetPersister;
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import org.springframework.data.mongodb.core.CollectionCallback;
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import org.springframework.data.mongodb.core.MongoTemplate;
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import org.springframework.util.ClassUtils;
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import com.mongodb.BasicDBObject;
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import com.mongodb.DBCollection;
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import com.mongodb.DBObject;
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import com.mongodb.MongoException;
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/**
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* @author Thomas Risberg
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* @author Oliver Gierke
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* @author Alex Vengrovsk
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* @author Mark Paluch
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*/
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public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
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private static final String ENTITY_CLASS = "_entity_class";
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private static final String ENTITY_ID = "_entity_id";
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private static final String ENTITY_FIELD_NAME = "_entity_field_name";
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private static final String ENTITY_FIELD_CLASS = "_entity_field_class";
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private final Logger log = LoggerFactory.getLogger(getClass());
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private MongoTemplate mongoTemplate;
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private EntityManagerFactory entityManagerFactory;
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public void setMongoTemplate(MongoTemplate mongoTemplate) {
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this.mongoTemplate = mongoTemplate;
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}
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public void setEntityManagerFactory(EntityManagerFactory entityManagerFactory) {
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this.entityManagerFactory = entityManagerFactory;
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.data.crossstore.ChangeSetPersister#getPersistentState(java.lang.Class, java.lang.Object, org.springframework.data.crossstore.ChangeSet)
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*/
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public void getPersistentState(Class<? extends ChangeSetBacked> entityClass, Object id, final ChangeSet changeSet)
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throws DataAccessException, NotFoundException {
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if (id == null) {
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log.debug("Unable to load MongoDB data for null id");
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return;
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}
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String collName = getCollectionNameForEntity(entityClass);
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final DBObject dbk = new BasicDBObject();
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dbk.put(ENTITY_ID, id);
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dbk.put(ENTITY_CLASS, entityClass.getName());
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if (log.isDebugEnabled()) {
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log.debug("Loading MongoDB data for {}", dbk);
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}
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mongoTemplate.execute(collName, new CollectionCallback<Object>() {
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public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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for (DBObject dbo : collection.find(dbk)) {
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String key = (String) dbo.get(ENTITY_FIELD_NAME);
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if (log.isDebugEnabled()) {
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log.debug("Processing key: {}", key);
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}
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if (!changeSet.getValues().containsKey(key)) {
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String className = (String) dbo.get(ENTITY_FIELD_CLASS);
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if (className == null) {
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throw new DataIntegrityViolationException(
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"Unble to convert property " + key + ": Invalid metadata, " + ENTITY_FIELD_CLASS + " not available");
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}
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Class<?> clazz = ClassUtils.resolveClassName(className, ClassUtils.getDefaultClassLoader());
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Object value = mongoTemplate.getConverter().read(clazz, dbo);
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if (log.isDebugEnabled()) {
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log.debug("Adding to ChangeSet: {}", key);
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}
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changeSet.set(key, value);
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}
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}
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return null;
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}
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});
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.data.crossstore.ChangeSetPersister#getPersistentId(org.springframework.data.crossstore.ChangeSetBacked, org.springframework.data.crossstore.ChangeSet)
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*/
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public Object getPersistentId(ChangeSetBacked entity, ChangeSet cs) throws DataAccessException {
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if (log.isDebugEnabled()) {
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log.debug("getPersistentId called on {}", entity);
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}
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if (entityManagerFactory == null) {
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throw new DataAccessResourceFailureException("EntityManagerFactory cannot be null");
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}
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return entityManagerFactory.getPersistenceUnitUtil().getIdentifier(entity);
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.data.crossstore.ChangeSetPersister#persistState(org.springframework.data.crossstore.ChangeSetBacked, org.springframework.data.crossstore.ChangeSet)
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*/
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public Object persistState(ChangeSetBacked entity, ChangeSet cs) throws DataAccessException {
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if (cs == null) {
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log.debug("Flush: changeset was null, nothing to flush.");
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return 0L;
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}
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if (log.isDebugEnabled()) {
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log.debug("Flush: changeset: {}", cs.getValues());
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}
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String collName = getCollectionNameForEntity(entity.getClass());
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if (mongoTemplate.getCollection(collName) == null) {
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mongoTemplate.createCollection(collName);
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}
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for (String key : cs.getValues().keySet()) {
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if (key != null && !key.startsWith("_") && !key.equals(ChangeSetPersister.ID_KEY)) {
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Object value = cs.getValues().get(key);
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final DBObject dbQuery = new BasicDBObject();
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dbQuery.put(ENTITY_ID, getPersistentId(entity, cs));
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dbQuery.put(ENTITY_CLASS, entity.getClass().getName());
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dbQuery.put(ENTITY_FIELD_NAME, key);
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DBObject dbId = mongoTemplate.execute(collName, new CollectionCallback<DBObject>() {
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public DBObject doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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return collection.findOne(dbQuery);
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}
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});
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if (value == null) {
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if (log.isDebugEnabled()) {
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log.debug("Flush: removing: {}", dbQuery);
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}
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mongoTemplate.execute(collName, new CollectionCallback<Object>() {
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public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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collection.remove(dbQuery);
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return null;
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}
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});
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} else {
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final DBObject dbDoc = new BasicDBObject();
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dbDoc.putAll(dbQuery);
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if (log.isDebugEnabled()) {
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log.debug("Flush: saving: {}", dbQuery);
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}
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mongoTemplate.getConverter().write(value, dbDoc);
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dbDoc.put(ENTITY_FIELD_CLASS, value.getClass().getName());
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if (dbId != null) {
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dbDoc.put("_id", dbId.get("_id"));
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}
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mongoTemplate.execute(collName, new CollectionCallback<Object>() {
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public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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collection.save(dbDoc);
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return null;
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}
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});
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}
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}
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}
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return 0L;
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}
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/**
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* Returns the collection the given entity type shall be persisted to.
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*
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* @param entityClass must not be {@literal null}.
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* @return
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*/
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private String getCollectionNameForEntity(Class<? extends ChangeSetBacked> entityClass) {
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return mongoTemplate.getCollectionName(entityClass);
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}
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}
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/*
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* Copyright 2011-2016 the original author or authors.
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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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*/
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package org.springframework.data.mongodb.crossstore;
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import javax.persistence.EntityManagerFactory;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.dao.DataAccessException;
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import org.springframework.dao.DataAccessResourceFailureException;
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import org.springframework.dao.DataIntegrityViolationException;
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import org.springframework.data.crossstore.ChangeSet;
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import org.springframework.data.crossstore.ChangeSetBacked;
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import org.springframework.data.crossstore.ChangeSetPersister;
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import org.springframework.data.mongodb.core.CollectionCallback;
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import org.springframework.data.mongodb.core.MongoTemplate;
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import org.springframework.util.ClassUtils;
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import com.mongodb.BasicDBObject;
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import com.mongodb.DBCollection;
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import com.mongodb.DBObject;
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import com.mongodb.MongoException;
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/**
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* @author Thomas Risberg
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* @author Oliver Gierke
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* @author Alex Vengrovsk
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* @author Mark Paluch
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*/
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public class MongoChangeSetPersister implements ChangeSetPersister<Object> {
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private static final String ENTITY_CLASS = "_entity_class";
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private static final String ENTITY_ID = "_entity_id";
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private static final String ENTITY_FIELD_NAME = "_entity_field_name";
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private static final String ENTITY_FIELD_CLASS = "_entity_field_class";
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private final Logger log = LoggerFactory.getLogger(getClass());
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private MongoTemplate mongoTemplate;
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private EntityManagerFactory entityManagerFactory;
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public void setMongoTemplate(MongoTemplate mongoTemplate) {
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this.mongoTemplate = mongoTemplate;
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}
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public void setEntityManagerFactory(EntityManagerFactory entityManagerFactory) {
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this.entityManagerFactory = entityManagerFactory;
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.data.crossstore.ChangeSetPersister#getPersistentState(java.lang.Class, java.lang.Object, org.springframework.data.crossstore.ChangeSet)
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*/
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public void getPersistentState(Class<? extends ChangeSetBacked> entityClass, Object id, final ChangeSet changeSet)
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throws DataAccessException, NotFoundException {
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if (id == null) {
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log.debug("Unable to load MongoDB data for null id");
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return;
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}
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String collName = getCollectionNameForEntity(entityClass);
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final DBObject dbk = new BasicDBObject();
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dbk.put(ENTITY_ID, id);
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dbk.put(ENTITY_CLASS, entityClass.getName());
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if (log.isDebugEnabled()) {
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log.debug("Loading MongoDB data for {}", dbk);
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}
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mongoTemplate.execute(collName, new CollectionCallback<Object>() {
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public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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for (DBObject dbo : collection.find(dbk)) {
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String key = (String) dbo.get(ENTITY_FIELD_NAME);
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if (log.isDebugEnabled()) {
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log.debug("Processing key: {}", key);
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}
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if (!changeSet.getValues().containsKey(key)) {
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String className = (String) dbo.get(ENTITY_FIELD_CLASS);
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if (className == null) {
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throw new DataIntegrityViolationException(
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"Unble to convert property " + key + ": Invalid metadata, " + ENTITY_FIELD_CLASS + " not available");
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}
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Class<?> clazz = ClassUtils.resolveClassName(className, ClassUtils.getDefaultClassLoader());
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Object value = mongoTemplate.getConverter().read(clazz, dbo);
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if (log.isDebugEnabled()) {
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log.debug("Adding to ChangeSet: {}", key);
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}
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changeSet.set(key, value);
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}
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}
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return null;
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}
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});
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.data.crossstore.ChangeSetPersister#getPersistentId(org.springframework.data.crossstore.ChangeSetBacked, org.springframework.data.crossstore.ChangeSet)
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*/
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public Object getPersistentId(ChangeSetBacked entity, ChangeSet cs) throws DataAccessException {
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if (log.isDebugEnabled()) {
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log.debug("getPersistentId called on {}", entity);
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}
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if (entityManagerFactory == null) {
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throw new DataAccessResourceFailureException("EntityManagerFactory cannot be null");
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}
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return entityManagerFactory.getPersistenceUnitUtil().getIdentifier(entity);
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.data.crossstore.ChangeSetPersister#persistState(org.springframework.data.crossstore.ChangeSetBacked, org.springframework.data.crossstore.ChangeSet)
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*/
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public Object persistState(ChangeSetBacked entity, ChangeSet cs) throws DataAccessException {
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if (cs == null) {
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log.debug("Flush: changeset was null, nothing to flush.");
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return 0L;
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}
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if (log.isDebugEnabled()) {
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log.debug("Flush: changeset: {}", cs.getValues());
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}
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String collName = getCollectionNameForEntity(entity.getClass());
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if (mongoTemplate.getCollection(collName) == null) {
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mongoTemplate.createCollection(collName);
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}
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for (String key : cs.getValues().keySet()) {
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if (key != null && !key.startsWith("_") && !key.equals(ChangeSetPersister.ID_KEY)) {
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Object value = cs.getValues().get(key);
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final DBObject dbQuery = new BasicDBObject();
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dbQuery.put(ENTITY_ID, getPersistentId(entity, cs));
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dbQuery.put(ENTITY_CLASS, entity.getClass().getName());
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dbQuery.put(ENTITY_FIELD_NAME, key);
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DBObject dbId = mongoTemplate.execute(collName, new CollectionCallback<DBObject>() {
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public DBObject doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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return collection.findOne(dbQuery);
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}
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});
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if (value == null) {
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if (log.isDebugEnabled()) {
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log.debug("Flush: removing: {}", dbQuery);
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}
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mongoTemplate.execute(collName, new CollectionCallback<Object>() {
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public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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collection.remove(dbQuery);
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return null;
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}
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});
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} else {
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final DBObject dbDoc = new BasicDBObject();
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dbDoc.putAll(dbQuery);
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if (log.isDebugEnabled()) {
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log.debug("Flush: saving: {}", dbQuery);
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}
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mongoTemplate.getConverter().write(value, dbDoc);
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dbDoc.put(ENTITY_FIELD_CLASS, value.getClass().getName());
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if (dbId != null) {
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dbDoc.put("_id", dbId.get("_id"));
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}
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mongoTemplate.execute(collName, new CollectionCallback<Object>() {
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public Object doInCollection(DBCollection collection) throws MongoException, DataAccessException {
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collection.save(dbDoc);
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return null;
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}
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});
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}
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}
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}
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return 0L;
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}
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/**
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* Returns the collection the given entity type shall be persisted to.
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*
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* @param entityClass must not be {@literal null}.
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* @return
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*/
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private String getCollectionNameForEntity(Class<? extends ChangeSetBacked> entityClass) {
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return mongoTemplate.getCollectionName(entityClass);
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}
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}
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Reference in New Issue
Block a user