Spring和Morphia,MongoDB的简单封装以及自增ID的实现（转）

原文地址：http://www.oschina.net/code/snippet_98659_3681
一个对Spring和Morphia的简单封装，主要针对Mongo的自增ID实现以及方便与Spring的集成。
标签： Spring , mongodb , morphia , nosql
代码片段(15)
[代码] [Java]代码
01
package com.paojiao.nosql.mongo;
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import com.google.code.morphia.annotations.Entity;
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import com.google.code.morphia.annotations.Id;
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import java.io.Serializable;
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/**
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* Created by IntelliJ IDEA.
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* User: Arden
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* Date: 11-3-26
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* Time: 下午12:42
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* To change this template use File | Settings | File Templates.
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*/
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@Entity(value = "sequence", noClassnameStored=true)
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public class MongoSequence implements Serializable {
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@Id
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private String collName;
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private Long value;
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public MongoSequence(){
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}
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public MongoSequence(String collName) {
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this.collName = collName;
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}
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public String getCollName() {
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return collName;
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}
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public void setCollName(String collName) {
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this.collName = collName;
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}
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public Long getValue() {
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return value;
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}
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public void setValue(Long value) {
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this.value = value;
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}
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}
[代码] [Java]代码
01
package com.paojiao.nosql.mongo;
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import com.google.code.morphia.Datastore;
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import com.google.code.morphia.Morphia;
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import com.mongodb.Mongo;
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import com.paojiao.session.Session;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.Map;
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/**
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* Created by IntelliJ IDEA.
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* User: Arden
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* Date: 11-3-26
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* Time: 下午12:55
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* To change this template use File | Settings | File Templates.
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*/
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public class MongoSequenceManager extends MongoDAO {
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// mongodb日志记录器
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private final Logger logger = LoggerFactory.getLogger(this.getClass());
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// 序列映射
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private Map sequenceMap = null;
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public MongoSequenceManager(Datastore ds) {
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super(ds);
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this.entityClazz = MongoSequence.class;
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}
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public void setSequenceMap(Map sequenceMap) {
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this.sequenceMap = sequenceMap;
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}
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/**
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* 获得序列初始值
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* @param collName
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* @return
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*/
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public Long getSequenceStartNumber(String collName) {
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Long startNumber = this.sequenceMap.get(collName);
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if (startNumber == null) {
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return 1L;
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}
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return startNumber;
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}
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}
[代码] [Java]代码
001
package com.paojiao.nosql.mongo;
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import com.google.code.morphia.Datastore;
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import com.google.code.morphia.DatastoreImpl;
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import com.google.code.morphia.Key;
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import com.google.code.morphia.Morphia;
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import com.google.code.morphia.dao.DAO;
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import com.google.code.morphia.query.Query;
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import com.google.code.morphia.query.QueryResults;
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import com.google.code.morphia.query.UpdateOperations;
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import com.google.code.morphia.query.UpdateResults;
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import com.mongodb.DBCollection;
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import com.mongodb.Mongo;
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import com.mongodb.WriteConcern;
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import com.mongodb.WriteResult;
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import java.lang.reflect.ParameterizedType;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Created by IntelliJ IDEA.
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* User: Arden
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* Date: 11-3-15
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* Time: 下午5:11
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* To change this template use File | Settings | File Templates.
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*/
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@SuppressWarnings({ "unchecked", "rawtypes" })
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public class MongoDAO {
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protected Class entityClazz;
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protected DatastoreImpl ds;
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protected MongoDAO(Datastore ds) {
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this.ds = (DatastoreImpl) ds;
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}
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public void setEntityClazz(Class entityClazz) {
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this.entityClazz = entityClazz;
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}
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public void setDs(DatastoreImpl ds) {
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this.ds = ds;
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}
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/**
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* Converts from a List to their id values
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*
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* @param keys
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* @return
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*/
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protected List keysToIds(List> keys) {
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ArrayList ids = new ArrayList(keys.size() * 2);
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for (Key key : keys)
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ids.add(key.getId());
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return ids;
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}
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/** The underlying collection for this DAO */
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public DBCollection getCollection() {
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return ds.getCollection(entityClazz);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#createQuery()
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*/
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public Query createQuery() {
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return ds.createQuery(entityClazz);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#createUpdateOperations()
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*/
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public UpdateOperations createUpdateOperations() {
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return ds.createUpdateOperations(entityClazz);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#getEntityClass()
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*/
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public Class getEntityClass() {
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return entityClazz;
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#save(T)
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*/
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public Key save(T entity) {
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return ds.save(entity);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#save(T, com.mongodb.WriteConcern)
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*/
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public Key save(T entity, WriteConcern wc) {
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return ds.save(entity, wc);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#updateFirst(com.google.code.morphia.query.Query, com.google.code.morphia.query.UpdateOperations)
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*/
102
public UpdateResults updateFirst(Query q, UpdateOperations ops) {
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return ds.updateFirst(q, ops);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#update(com.google.code.morphia.query.Query, com.google.code.morphia.query.UpdateOperations)
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*/
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public UpdateResults update(Query q, UpdateOperations ops) {
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return ds.update(q, ops);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#delete(T)
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*/
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public WriteResult delete(T entity) {
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return ds.delete(entity);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#delete(T, com.mongodb.WriteConcern)
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*/
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public WriteResult delete(T entity, WriteConcern wc) {
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return ds.delete(entity, wc);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#deleteById(K)
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*/
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public WriteResult deleteById(K id) {
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return ds.delete(entityClazz, id);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#deleteByQuery(com.google.code.morphia.query.Query)
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*/
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public WriteResult deleteByQuery(Query q) {
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return ds.delete(q);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#get(K)
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*/
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public T get(K id) {
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return ds.get(entityClazz, id);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#findIds(java.lang.String, java.lang.Object)
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*/
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public List findIds(String key, Object value) {
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return (List) keysToIds(ds.find(entityClazz, key, value).asKeyList());
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#findIds()
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*/
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public List> findIds() {
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return (List>) keysToIds(ds.find(entityClazz).asKeyList());
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#findIds(com.google.code.morphia.query.Query)
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*/
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public List> findIds(Query q) {
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return (List>) keysToIds(q.asKeyList());
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#exists(java.lang.String, java.lang.Object)
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*/
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public boolean exists(String key, Object value) {
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return exists(ds.find(entityClazz, key, value));
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#exists(com.google.code.morphia.query.Query)
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*/
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public boolean exists(Query q) {
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return ds.getCount(q) > 0;
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#count()
185
*/
186
public long count() {
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return ds.getCount(entityClazz);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#count(java.lang.String, java.lang.Object)
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*/
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public long count(String key, Object value) {
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return count(ds.find(entityClazz, key, value));
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#count(com.google.code.morphia.query.Query)
199
*/
200
public long count(Query q) {
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return ds.getCount(q);
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#findOne(java.lang.String, java.lang.Object)
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*/
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public T findOne(String key, Object value) {
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return ds.find(entityClazz, key, value).get();
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#findOne(com.google.code.morphia.query.Query)
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*/
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public T findOne(Query q) {
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return q.get();
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#find()
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*/
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public QueryResults find() {
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return createQuery();
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#find(com.google.code.morphia.query.Query)
227
*/
228
public QueryResults find(Query q) {
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return q;
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}
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/* (non-Javadoc)
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* @see com.google.code.morphia.DAO#getDatastore()
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*/
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public Datastore getDatastore() {
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return ds;
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}
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public void ensureIndexes() {
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ds.ensureIndexes(entityClazz);
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}
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}
[代码] [Java]代码
01
package com.paojiao.nosql.mongo;
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import com.google.code.morphia.DatastoreImpl;
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import com.google.code.morphia.Morphia;
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import com.mongodb.Mongo;
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import java.util.List;
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/**
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* Created by IntelliJ IDEA.
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* User: Arden
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* Date: 11-3-26
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* Time: 下午3:09
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* To change this template use File | Settings | File Templates.
15
*/
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public class MongoDataStore extends DatastoreImpl {
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private List entityClasses;
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public MongoDataStore(Morphia morphia, Mongo mongo) {
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super(morphia, mongo);
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}
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public MongoDataStore(Morphia morphia, Mongo mongo, String dbName, String username, char[] password) {
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super(morphia, mongo, dbName, username, password);
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}
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public MongoDataStore(Morphia morphia, Mongo mongo, String dbName) {
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super(morphia, mongo, dbName);
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}
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public void setEntityClasses(List entityClasses) {
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this.entityClasses = entityClasses;
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}
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/**
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* 初始化相关映射类
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*/
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public void init() {
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System.out.println(this.entityClasses);
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if (this.entityClasses != null && !this.entityClasses.isEmpty()) {
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for (Class entityClass : entityClasses) {
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this.getMapper().addMappedClass(entityClass);
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}
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}
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}
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}
[代码] [Java]代码
01
package com.paojiao.nosql.mongo;
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import com.google.code.morphia.annotations.Id;
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import com.google.code.morphia.annotations.PrePersist;
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import com.google.code.morphia.query.Query;
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import com.jrails.modules.spring.ServiceLocator;
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import java.io.Serializable;
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/**
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* Created by IntelliJ IDEA.
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* User: Arden
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* Date: 11-3-26
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* Time: 下午12:58
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* To change this template use File | Settings | File Templates.
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*/
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public abstract class LongPKMongoEntity implements Serializable {
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@Id
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protected Long id;
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public Long getId() {
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return id;
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}
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public void setId(Long id) {
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this.id = id;
27
}
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@PrePersist
30
protected void prePersist() {
31
if (id == null) {
32
MongoSequenceManager mongoSequenceManager = (MongoSequenceManager) ServiceLocator.getService("mongoSequenceManager");
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String collName = this.getClass().getCanonicalName();
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MongoSequence sequence = mongoSequenceManager.get(collName);
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if (sequence == null) {
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sequence = new MongoSequence(collName);
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Long startNumber = mongoSequenceManager.getSequenceStartNumber(collName);
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sequence.setValue(startNumber);
39
} else {
40
sequence.setValue(sequence.getValue()+1);
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}
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mongoSequenceManager.save(sequence);
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this.id = sequence.getValue();
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}
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}
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}
[代码] [Java]代码
01
package com.paojiao.nosql.mongo;
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import com.google.code.morphia.annotations.Id;
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import com.google.code.morphia.annotations.PrePersist;
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import com.jrails.modules.spring.ServiceLocator;
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import org.bson.types.ObjectId;
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08
/**
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* Created by IntelliJ IDEA.
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* User: Arden
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* Date: 11-3-26
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* Time: 下午12:58
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* To change this template use File | Settings | File Templates.
14
*/
15
public abstract class StringPKMongoEntity {
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@Id
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protected String id = new ObjectId().toString();
18

19
public String getId() {
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return id;
21
}
22

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public void setId(String id) {
24
this.id = id;
25
}
26
}
[代码] [Java]代码
01
package com.paojiao.nosql.mongo;
02

03
import com.google.code.morphia.annotations.Id;
04
import com.google.code.morphia.annotations.PrePersist;
05
import com.jrails.modules.spring.ServiceLocator;
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import java.util.UUID;
08

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/**
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* Created by IntelliJ IDEA.
11
* User: Arden
12
* Date: 11-3-26
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* Time: 下午12:58
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* To change this template use File | Settings | File Templates.
15
*/
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public abstract class UuidPKMongoEntity {
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@Id
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protected String id;
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public String getId() {
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return id;
22
}
23

24
public void setId(String id) {
25
this.id = id;
26
}
27

28
@PrePersist
29
protected void prePersist() {
30
if (id == null) {
31
String uuid = UUID.randomUUID().toString().replaceAll("-","");
32
this.id = uuid;
33
}
34
}
35
}
[代码] [Java]代码
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03
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:p="http://www.springframework.org/schema/p"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:aop="http://www.springframework.org/schema/aop"
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xmlns:task="http://www.springframework.org/schema/task"
08
xsi:schemaLocation="http://www.springframework.org/schema/beans
09
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context-3.0.xsd
12
http://www.springframework.org/schema/task
13
http://www.springframework.org/schema/task/spring-task-3.0.xsd
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http://www.springframework.org/schema/aop
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http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
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数据源
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com.paojiao.session.Session
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com.paojiao.session.User
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com.paojiao.nosql.mongo.MongoSequence
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[代码] [Java]代码
01

02
03
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
04
xmlns:p="http://www.springframework.org/schema/p"
05
xmlns:context="http://www.springframework.org/schema/context"
06
xmlns:aop="http://www.springframework.org/schema/aop"
07
xmlns:task="http://www.springframework.org/schema/task"
08
xsi:schemaLocation="http://www.springframework.org/schema/beans
09
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context-3.0.xsd
12
http://www.springframework.org/schema/task
13
http://www.springframework.org/schema/task/spring-task-3.0.xsd
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http://www.springframework.org/schema/aop
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http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
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[代码] [Java]代码
01
package com.paojiao.session;
02

03
import com.google.code.morphia.Datastore;
04
import com.google.code.morphia.Key;
05
import com.google.code.morphia.Morphia;
06
import com.mongodb.Mongo;
07
import com.paojiao.nosql.mongo.MongoDAO;
08
import org.bson.types.ObjectId;
09
import org.slf4j.Logger;
10
import org.slf4j.LoggerFactory;
11

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import java.util.Calendar;
13

14
/**
15
* Created by IntelliJ IDEA.
16
* User: Arden
17
* Date: 11-3-26
18
* Time: 上午10:55
19
* To change this template use File | Settings | File Templates.
20
*/
21
public class SessionManager extends MongoDAO {
22
// mongodb日志记录器
23
private final Logger sessionLogger = LoggerFactory.getLogger("mongodataLogger");
24

25
public SessionManager(Datastore ds) {
26
super(ds);
27
this.entityClazz = Session.class;
28
}
29

30
/**
31
* 创建一个空session
32
*
33
* @param userid
34
* @param username
35
* @param module
36
* @param device
37
* @param rid
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* @return
39
*/
40
public Session createSession(Long userid, String username, int module, int device, String rid) {
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Session session = new Session();
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session.setUserid(userid);
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session.setUsername(username);
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session.setModule(module);
45
session.setDevice(device);
46
session.setRid(rid);
47
return session;
48
}
49

50
/**
51
* 保存session
52
* @param session
53
* @return
54
*/
55
public String saveSession(Session session) {
56
Key key = this.save(session);
57
return (String)key.getId();
58
}
59
}
[代码] [Java]代码
001
package com.paojiao.session;
002

003
import com.google.code.morphia.annotations.Entity;
004
import com.google.code.morphia.annotations.Id;
005
import com.google.code.morphia.annotations.Indexed;
006
import com.google.code.morphia.annotations.Property;
007
import com.paojiao.nosql.mongo.StringPKMongoEntity;
008
import com.paojiao.nosql.mongo.UuidPKMongoEntity;
009
import org.bson.types.ObjectId;
010

011
import java.io.Serializable;
012
import java.util.Calendar;
013
import java.util.Date;
014
import java.util.HashMap;
015
import java.util.Map;
016

017
/**
018
* Created by IntelliJ IDEA.
019
* User: Arden
020
* Date: 11-3-26
021
* Time: 上午10:28
022
* To change this template use File | Settings | File Templates.
023
*/
024
@Entity(value = "sessions", noClassnameStored=true)
025
public class Session extends StringPKMongoEntity {
026
// 用户ID
027
@Indexed(name="i_userid", unique=true) @Property("userid") protected Long userid = 0L;
028

029
// 用户名
030
@Indexed protected String username;
031

032
// session创建时间
033
@Property("creation_time") protected Date creationTime = Calendar.getInstance().getTime();
034

035
// session访问时间
036
@Property("accessed_time") protected Date accessedTime = creationTime;
037

038
// 业务模块
039
protected int module;
040

041
// 用户的RID
042
@Indexed(name="i_rid", unique=true) protected String rid;
043

044
// 用户使用的终端（如：手机客户端（Iphone,Nokia等）
045
protected int device = 1;
046

047
// session超时时间
048
protected int timeout = 30;
049

050
// session详细内容
051
protected Map data;
052

053
public Long getUserid() {
054
return userid;
055
}
056

057
public void setUserid(Long userid) {
058
this.userid = userid;
059
}
060

061
public String getUsername() {
062
return username;
063
}
064

065
public void setUsername(String username) {
066
this.username = username;
067
}
068

069
public Date getCreationTime() {
070
return creationTime;
071
}
072

073
public void setCreationTime(Date creationTime) {
074
this.creationTime = creationTime;
075
}
076

077
public Date getAccessedTime() {
078
return accessedTime;
079
}
080

081
public void setAccessedTime(Date accessedTime) {
082
this.accessedTime = accessedTime;
083
}
084

085
public int getModule() {
086
return module;
087
}
088

089
public void setModule(int module) {
090
this.module = module;
091
}
092

093
public String getRid() {
094
return rid;
095
}
096

097
public void setRid(String rid) {
098
this.rid = rid;
099
}
100

101
public int getDevice() {
102
return device;
103
}
104

105
public void setDevice(int device) {
106
this.device = device;
107
}
108

109
public Map getData() {
110
return data;
111
}
112

113
public void setData(Map data) {
114
this.data = data;
115
}
116

117
public void setAttribute(String key, Object value) {
118
if (this.data == null) {
119
this.data = new HashMap();
120
}
121
this.data.put(key, value);
122
}
123

124
public Object getAttribute(String key) {
125
if (this.data != null) {
126
return this.data.get(key);
127
}
128
return null;
129
}
130

131
public int getTimeout() {
132
return timeout;
133
}
134

135
public void setTimeout(int timeout) {
136
this.timeout = timeout;
137
}
138
}
[代码] [Java]代码
01
package com.paojiao.session;
02

03
import com.google.code.morphia.annotations.Entity;
04
import com.paojiao.nosql.mongo.LongPKMongoEntity;
05

06
/**
07
* Created by IntelliJ IDEA.
08
* User: Arden
09
* Date: 11-3-26
10
* Time: 下午5:22
11
* To change this template use File | Settings | File Templates.
12
*/
13
@Entity(value = "sessionusers", noClassnameStored=true)
14
public class User extends LongPKMongoEntity {
15
private String name;
16

17
public String getName() {
18
return name;
19
}
20

21
public void setName(String name) {
22
this.name = name;
23
}
24
}
[代码] [Java]代码
01
/* --------------------------------------
02
* CREATED ON 2007-11-23 15:35:25
03
*
04
* MSN [email protected]
05
* QQ 83058327（太阳里的雪）
06
* MOBILE 13590309275
07
* BLOG http://www.caojianghua.com
08
*
09
* ALL RIGHTS RESERVED BY ZHENUU CO,.LTD.
10
* --------------------------------------
11
*/
12
package com.jrails.modules.spring;
13

14
import org.apache.commons.logging.Log;
15
import org.apache.commons.logging.LogFactory;
16
import org.springframework.beans.BeansException;
17
import org.springframework.beans.factory.BeanFactory;
18
import org.springframework.beans.factory.BeanFactoryAware;
19

20
/**
21
* Spring业务查找器
22
*
23
* @author arden
24
*/
25
public class ServiceLocator implements BeanFactoryAware {
26

27
protected static final Log logger = LogFactory.getLog(ServiceLocator.class);
28
private static BeanFactory beanFactory = null;
29

30
public void setBeanFactory(BeanFactory factory) throws BeansException {
31
beanFactory = factory;
32
}
33

34
public static Object getBean(String beanName) {
35
if (beanFactory != null) {
36
return beanFactory.getBean(beanName);
37
}
38
return null;
39
}
40

41
public static Object getDao(String daoName) {
42
return getBean(daoName);
43
}
44

45
public static Object getService(String serviceName) {
46
return getBean(serviceName);
47
}
48
}
[代码] [Java]代码
01
package com.paojiao.session;
02

03
import com.google.code.morphia.Datastore;
04
import com.paojiao.nosql.mongo.MongoDAO;
05

06
/**
07
* Created by IntelliJ IDEA.
08
* User: Administrator
09
* Date: 11-3-26
10
* Time: 下午5:23
11
* To change this template use File | Settings | File Templates.
12
*/
13
public class UserManager extends MongoDAO {
14
public UserManager(Datastore ds) {
15
super(ds);
16
}
17
}
[代码] [Java]代码
view sourceprint?
01
package com.paojiao.session;
02

03
import com.jrails.modules.spring.ServiceLocator;
04
import com.paojiao.spring.SpringConfig;
05

06
/**
07
* Created by IntelliJ IDEA.
08
* User: Arden
09
* Date: 11-3-26
10
* Time: 上午11:00
11
* To change this template use File | Settings | File Templates.
12
*/
13
public class SessionTest {
14
public static void main(String...args) {
15
try {
16
SpringConfig.init("spring.xml");
17
SessionManager sessionManager = (SessionManager) ServiceLocator.getService("sessionManager");
18
Session session = sessionManager.createSession(204L, "arden", 1, 1, "1234567890");
19
//session.setId("aaaaaaaaaaaa");
20
session.setAttribute("name", "ardenemily");
21
session.setAttribute("email", "[email protected]");
22
String id = sessionManager.saveSession(session);
23
System.out.println(id);
24
Session s = sessionManager.get(id);
25
if (s != null) {
26
System.out.println(s.data.get("name"));
27
System.out.println(s.data.get("email"));
28
}
29
boolean exists = sessionManager.exists("_id", id);
30
System.out.println(exists);
31

32

33
UserManager userManager = (UserManager) ServiceLocator.getService("userManager");
34
User user = new User();
35
user.setName("arden");
36
userManager.save(user);
37

38
} catch (Exception e) {
39
e.printStackTrace();
40
}
41
}
42
}