使用JPA进行CriteriaQuery进行查询的注意事项

@Entity
@Table(name = "report_workload")
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
@JsonIdentityInfo(generator = JSOGGenerator.class)
public class ReportWorkload {
    private int id;
    private Integer flowWorkItemApprId;
    private Integer busId;
    private Integer deptId;
    private Integer staffId;
    private Integer busiValueIndustryId;
    private Integer busiValueScaleId;
    private String taskName;
    private Integer count;
    private BigDecimal amount;
    private Date approvalTime;
    private String reportTime;
 
    private String deptName;
    private String staffName; 
 
    @Id
    @Column(name = "id")
    @GeneratedValue(strategy = GenerationType.AUTO)
    public int getId() {
        return id;
    }
 
    public void setId(int id) {
        this.id = id;
    }
 
    @Basic
    @Column(name = "flow_work_item_appr_id")
    public Integer getFlowWorkItemApprId() {
        return flowWorkItemApprId;
    }
 
    public void setFlowWorkItemApprId(Integer flowWorkItemApprId) {
        this.flowWorkItemApprId = flowWorkItemApprId;
    }
 
    @Basic
    @Column(name = "bus_id")
    public Integer getBusId() {
        return busId;
    }
 
    public void setBusId(Integer busId) {
        this.busId = busId;
    }
 
    @Basic
    @Column(name = "dept_id")
    public Integer getDeptId() {
        return deptId;
    }
 
    public void setDeptId(Integer deptId) {
        this.deptId = deptId;
    }
 
    @Basic
    @Column(name = "staff_id")
    public Integer getStaffId() {
        return staffId;
    }
 
    public void setStaffId(Integer staffId) {
        this.staffId = staffId;
    }
 
    @Basic
    @Column(name = "busi_value_industry_id")
    public Integer getBusiValueIndustryId() {
        return busiValueIndustryId;
    }
 
    public void setBusiValueIndustryId(Integer busiValueIndustryId) {
        this.busiValueIndustryId = busiValueIndustryId;
    }
 
    @Basic
    @Column(name = "busi_value_scale_id")
    public Integer getBusiValueScaleId() {
        return busiValueScaleId;
    }
 
    public void setBusiValueScaleId(Integer busiValueScaleId) {
        this.busiValueScaleId = busiValueScaleId;
    }
 
    @Basic
    @Column(name = "task_name")
    public String getTaskName() {
        return taskName;
    }
 
    public void setTaskName(String taskName) {
        this.taskName = taskName;
    }
 
    @Basic
    @Column(name = "count")
    public Integer getCount() {
        return count;
    }
 
    public void setCount(Integer count) {
        this.count = count;
    }
 
    @Basic
    @Column(name = "amount")
    public BigDecimal getAmount() {
        return amount;
    }
 
    public void setAmount(BigDecimal amount) {
        this.amount = amount;
    }
 
    @Basic
    @Column(name = "approval_time")
 
    public Date getApprovalTime() {
        return approvalTime;
    }
 
    public void setApprovalTime(Date approvalTime) {
        this.approvalTime = approvalTime;
    }
 
    @Basic
    @Column(name = "report_time")
    public String getReportTime() {
        return reportTime;
    }
 
    public void setReportTime(String reportTime) {
        this.reportTime = reportTime;
    } 
 
    @Transient
    public String getDeptName() {
        return deptName;
    }
 
    public void setDeptName(String deptName) {
        this.deptName = deptName;
    }
 
    @Transient
    public String getStaffName() {
        return staffName;
    }
 
    public void setStaffName(String staffName) {
        this.staffName = staffName;
    }
 
    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof ReportWorkload)) return false; 
        ReportWorkload that = (ReportWorkload) o; 
        return id == that.id; 
    }
 
    @Override
    public int hashCode() {
        return id;
    }
 
    public ReportWorkload(int id, Integer flowWorkItemApprId,
                          Integer busId, Integer deptId, Integer staffId,
                          Integer busiValueIndustryId, Integer busiValueScaleId,
                          String taskName, Long count, BigDecimal amount,
                          Date approvalTime, String reportTime) {
        this.id = id;
        this.flowWorkItemApprId = flowWorkItemApprId;
        this.busId = busId;
        this.deptId = deptId;
        this.staffId = staffId;
        this.busiValueIndustryId = busiValueIndustryId;
        this.busiValueScaleId = busiValueScaleId;
        this.taskName = taskName;
        this.count = Integer.parseInt(count+"");
//        this.count = count;
        this.amount = amount;
        this.approvalTime = approvalTime;
        this.reportTime = reportTime;
    } 
    public ReportWorkload() {
    }
}

 @PersistenceContext
 private EntityManager em;

 public List<ReportWorkload> reportworkloadsearch(String reportTime, String deptId, String staffId, String typeId, String industryId) { 
        List<ReportWorkload> reportWorkloadList = new ArrayList<>();
        CriteriaBuilder criteriaBuilder = em.getCriteriaBuilder();
        CriteriaQuery<ReportWorkload> cq = criteriaBuilder.createQuery(ReportWorkload.class);
        Root<ReportWorkload> rt = cq.from(ReportWorkload.class);
        cq.multiselect(rt.get("id"),rt.get("flowWorkItemApprId"),
                rt.get("busId"),rt.get("deptId"),rt.get("staffId"),
                rt.get("busiValueIndustryId"),rt.get("busiValueScaleId"),
                rt.get("taskName"),criteriaBuilder.sum(rt.get("count")),
                criteriaBuilder.sum(rt.get("amount")),rt.get("approvalTime"),
                rt.get("reportTime"));
 
        if(reportTime!=null&&reportTime!=""){
            cq.where(criteriaBuilder.equal(rt.get("reportTime"), reportTime));
        }
        if(deptId!=null&&deptId!=""){
            cq.where(criteriaBuilder.equal(rt.get("deptId"), Integer.parseInt(deptId)));
        }
        if(staffId!=null&&staffId!=""){
            cq.where(criteriaBuilder.equal(rt.get("staffId"), Integer.parseInt(staffId)));
        }
        if(typeId!=null&&typeId!=""){
            cq.where(criteriaBuilder.equal(rt.get("typeId"), Integer.parseInt(typeId)));
        }
        if(industryId!=null&&industryId!=""){
            cq.where(criteriaBuilder.equal(rt.get("industryId"), Integer.parseInt(industryId)));
        }
 
        cq.groupBy(rt.get("busId"),rt.get("deptId"),rt.get("taskName"));
        reportWorkloadList = em.createQuery(cq).getResultList(); 
        return reportWorkloadList;
    }

package com.platform.framework.dao.jpa; 
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map; 
import javax.persistence.EntityManager;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaBuilder.In;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Order;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root; 
import org.apache.log4j.Logger;
 
/**
 * Query基类<br>
 * 
 * @describe：封装JPA CriteriaBuilder查询条件
 * @author：lry
 * @since：2014-05-23
 */
@SuppressWarnings({ "unused", "unchecked", "rawtypes", "null", "hiding" })
public class Query implements Serializable { 
private static final long serialVersionUID = 5064932771068929342L; 
private static Logger log = Logger.getLogger(Query.class); 
private EntityManager entityManager; 
/** 要查询的模型对象 */
private Class clazz;
 
/** 查询条件列表 */
private Root from; 
private List<Predicate> predicates; 
private CriteriaQuery criteriaQuery; 
private CriteriaBuilder criteriaBuilder; 
/** 排序方式列表 */
private List<Order> orders;
 
/** 关联模式 */
private Map<String, Query> subQuery; 
private Map<String, Query> linkQuery; 
private String projection; 
/** 或条件 */
private List<Query> orQuery; 
private String groupBy; 
private Query() {
} 
private Query(Class clazz, EntityManager entityManager) {
this.clazz = clazz;
this.entityManager = entityManager;
this.criteriaBuilder = this.entityManager.getCriteriaBuilder();
this.criteriaQuery = criteriaBuilder.createQuery(this.clazz);
this.from = criteriaQuery.from(this.clazz);
this.predicates = new ArrayList();
this.orders = new ArrayList();
}
 
/** 通过类创建查询条件 */
public static Query forClass(Class clazz, EntityManager entityManager) {
return new Query(clazz, entityManager);
}
 
/** 增加子查询 */
private void addSubQuery(String propertyName, Query query) {
if (this.subQuery == null)
this.subQuery = new HashMap();
 
if (query.projection == null)
throw new RuntimeException("子查询字段未设置");
 
this.subQuery.put(propertyName, query);
}
 
private void addSubQuery(Query query) {
addSubQuery(query.projection, query);
}
 
/** 增关联查询 */
public void addLinkQuery(String propertyName, Query query) {
if (this.linkQuery == null)
this.linkQuery = new HashMap();
 
this.linkQuery.put(propertyName, query);
}
 
/** 相等 */
public void eq(String propertyName, Object value) {
if (isNullOrEmpty(value))
return;
this.predicates.add(criteriaBuilder.equal(from.get(propertyName), value));
}
 
private boolean isNullOrEmpty(Object value) {
if (value instanceof String) {
return value == null || "".equals(value);
}
return value == null;
}
 
public void or(List<String> propertyName, Object value) {
if (isNullOrEmpty(value))
return;
if ((propertyName == null) || (propertyName.size() == 0))
return;
Predicate predicate = criteriaBuilder.or(criteriaBuilder.equal(from.get(propertyName.get(0)), value));
for (int i = 1; i < propertyName.size(); ++i)
predicate = criteriaBuilder.or(predicate, criteriaBuilder.equal(from.get(propertyName.get(i)), value));
this.predicates.add(predicate);
}
 
public void orLike(List<String> propertyName, String value) {
if (isNullOrEmpty(value) || (propertyName.size() == 0))
return;
if (value.indexOf("%") < 0)
value = "%" + value + "%";
Predicate predicate = criteriaBuilder.or(criteriaBuilder.like(from.get(propertyName.get(0)), value.toString()));
for (int i = 1; i < propertyName.size(); ++i)
predicate = criteriaBuilder.or(predicate, criteriaBuilder.like(from.get(propertyName.get(i)), value));
this.predicates.add(predicate);
}
 
/** 空 */
public void isNull(String propertyName) {
this.predicates.add(criteriaBuilder.isNull(from.get(propertyName)));
}
 
/** 非空 */
public void isNotNull(String propertyName) {
this.predicates.add(criteriaBuilder.isNotNull(from.get(propertyName)));
}
 
/** 不相等 */
public void notEq(String propertyName, Object value) {
if (isNullOrEmpty(value)) {
return;
}
this.predicates.add(criteriaBuilder.notEqual(from.get(propertyName), value));
}
 
/**
 * not in
 * 
 * @param propertyName
 *            属性名称
 * @param value
 *            值集合
 */
public void notIn(String propertyName, Collection value) {
if ((value == null) || (value.size() == 0)) {
return;
}
Iterator iterator = value.iterator();
In in = criteriaBuilder.in(from.get(propertyName));
while (iterator.hasNext()) {
in.value(iterator.next());
}
this.predicates.add(criteriaBuilder.not(in));
}
 
/**
 * 模糊匹配
 * 
 * @param propertyName
 *            属性名称
 * @param value
 *            属性值
 */
public void like(String propertyName, String value) {
if (isNullOrEmpty(value))
return;
if (value.indexOf("%") < 0)
value = "%" + value + "%";
this.predicates.add(criteriaBuilder.like(from.get(propertyName), value));
} 
/**
 * 时间区间查询
 * 
 * @param propertyName
 *            属性名称
 * @param lo
 *            属性起始值
 * @param go
 *            属性结束值
 */
public void between(String propertyName, Date lo, Date go) {
if (!isNullOrEmpty(lo) && !isNullOrEmpty(go)) {
this.predicates.add(criteriaBuilder.between(from.get(propertyName), lo, go));
}
 
// if (!isNullOrEmpty(lo) && !isNullOrEmpty(go)) {
// this.predicates.add(criteriaBuilder.lessThan(from.get(propertyName),
// new DateTime(lo).toString()));
// }
// if (!isNullOrEmpty(go)) {
// this.predicates.add(criteriaBuilder.greaterThan(from.get(propertyName),
// new DateTime(go).toString()));
// } 
} 
public void between(String propertyName, Number lo, Number go) {
if (!(isNullOrEmpty(lo)))
ge(propertyName, lo); 
if (!(isNullOrEmpty(go)))
le(propertyName, go);
}
 
/**
 * 小于等于
 * 
 * @param propertyName
 *            属性名称
 * @param value
 *            属性值
 */
public void le(String propertyName, Number value) {
if (isNullOrEmpty(value)) {
return;
}
this.predicates.add(criteriaBuilder.le(from.get(propertyName), value));
}
 
/**
 * 小于
 * 
 * @param propertyName
 *            属性名称
 * @param value
 *            属性值
 */
public void lt(String propertyName, Number value) {
if (isNullOrEmpty(value)) {
return;
}
this.predicates.add(criteriaBuilder.lt(from.get(propertyName), value));
}
 
/**
 * 大于等于
 * 
 * @param propertyName
 *            属性名称
 * @param value
 *            属性值
 */
public void ge(String propertyName, Number value) {
if (isNullOrEmpty(value)) {
return;
}
this.predicates.add(criteriaBuilder.ge(from.get(propertyName), value));
}
 
/**
 * 大于
 * 
 * @param propertyName
 *            属性名称
 * @param value
 *            属性值
 */
public void gt(String propertyName, Number value) {
if (isNullOrEmpty(value)) {
return;
}
this.predicates.add(criteriaBuilder.gt(from.get(propertyName), value));
}
 
/**
 * in
 * 
 * @param propertyName
 *            属性名称
 * @param value
 *            值集合
 */
public void in(String propertyName, Collection value) {
if ((value == null) || (value.size() == 0)) {
return;
}
Iterator iterator = value.iterator();
In in = criteriaBuilder.in(from.get(propertyName));
while (iterator.hasNext()) {
in.value(iterator.next());
}
this.predicates.add(in);
}
 
/** 直接添加JPA内部的查询条件,用于应付一些复杂查询的情况,例如或 */
public void addCriterions(Predicate predicate) {
this.predicates.add(predicate);
}
 
/**
 * 创建查询条件
 * 
 * @return JPA离线查询
 */
public CriteriaQuery newCriteriaQuery() {
criteriaQuery.where(predicates.toArray(new Predicate[0]));
if (!isNullOrEmpty(groupBy)) {
criteriaQuery.groupBy(from.get(groupBy));
}
if (this.orders != null) {
criteriaQuery.orderBy(orders);
}
addLinkCondition(this);
return criteriaQuery;
}
 
private void addLinkCondition(Query query) {
 
Map subQuery = query.linkQuery;
if (subQuery == null)
return;
 
for (Iterator queryIterator = subQuery.keySet().iterator(); queryIterator.hasNext();) {
String key = (String) queryIterator.next();
Query sub = (Query) subQuery.get(key);
from.join(key);
criteriaQuery.where(sub.predicates.toArray(new Predicate[0]));
addLinkCondition(sub);
}
}
 
public void addOrder(String propertyName, String order) {
if (order == null || propertyName == null)
return;
 
if (this.orders == null)
this.orders = new ArrayList();
 
if (order.equalsIgnoreCase("asc"))
this.orders.add(criteriaBuilder.asc(from.get(propertyName)));
else if (order.equalsIgnoreCase("desc"))
this.orders.add(criteriaBuilder.desc(from.get(propertyName)));
}
 
public void setOrder(String propertyName, String order) {
this.orders = null;
addOrder(propertyName, order);
}
 
public Class getModleClass() {
return this.clazz;
}
 
public String getProjection() {
return this.projection;
}
 
public void setProjection(String projection) {
this.projection = projection;
}
 
public Class getClazz() {
return this.clazz;
}
 
public List<Order> getOrders() {
return orders;
}
 
public void setOrders(List<Order> orders) {
this.orders = orders;
}
 
public EntityManager getEntityManager() {
return this.entityManager;
}
 
public void setEntityManager(EntityManager em) {
this.entityManager = em;
}
 
public Root getFrom() {
return from;
}
 
public List<Predicate> getPredicates() {
return predicates;
}
 
public void setPredicates(List<Predicate> predicates) {
this.predicates = predicates;
}
 
public CriteriaQuery getCriteriaQuery() {
return criteriaQuery;
}
 
public CriteriaBuilder getCriteriaBuilder() {
return criteriaBuilder;
}
 
public void setFetchModes(List<String> fetchField, List<String> fetchMode) {
 
}
 
public String getGroupBy() {
return groupBy;
}
 
public void setGroupBy(String groupBy) {
this.groupBy = groupBy;
} 
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/tx 
http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
            http://www.springframework.org/schema/aop 
            http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/util 
http://www.springframework.org/schema/util/spring-util-3.1.xsd">	
 
    <!-- JPA Entity Manager Factory -->
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
p:packagesToScan="com.**.model" p:dataSource-ref="dataSource"
p:jpaVendorAdapter-ref="hibernateVendor" p:jpaPropertyMap-ref="jpaPropertyMap"/>
 
<util:map id="jpaPropertyMap">
<entry key="hibernate.hbm2ddl.auto" value="update" /><!-- create,update,none -->
<entry key="hibernate.format_sql" value="false" />
<entry key="hibernate.show_sql" value="false" />
<entry key="hibernate.current_session_context_class" value="org.hibernate.context.internal.ThreadLocalSessionContext"/>
<entry key="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
 
<!-- To enable Hibernate's second level cache and query cache settings -->
<entry key="hibernate.max_fetch_depth" value="4" />
<entry key="hibernate.cache.use_second_level_cache" value="true" />
<entry key="hibernate.cache.use_query_cache" value="true" />
<!-- <entry key="hibernate.cache.region.factory_class" value="org.hibernate.cache.ehcache.EhCacheRegionFactory" /> -->
<entry key="hibernate.cache.region.factory_class" value="org.hibernate.cache.SingletonEhCacheRegionFactory" />
</util:map>
<bean id="hibernateVendor"
class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
p:database="MYSQL" p:showSql="true" p:generateDdl="true"
p:databasePlatform="org.hibernate.dialect.MySQLDialect" />

<bean id="transactionHandler" class="com.platform.framework.dao.jpa.TransactionHandler" >
<property name="txmethod">
<list>
<value>insert</value>
<value>update</value>
<value>delete</value>
</list>
</property>
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<aop:config>
<aop:aspect id="tran" ref="transactionHandler">
<aop:pointcut  id="tranMethod"
expression="
execution(* com.*.dao.*.*(..))||
execution(* com.*.service.impl.*.*(..))||

execution(* com.*.*.dao.*.*(..))||
execution(* com.*.*.service.impl.*.*(..))||

execution(* com.*.*.*.dao.*.*(..))||
execution(* com.*.*.*.service.impl.*.*(..))||

execution(* com.*.*.*.*.dao.*.*(..))||
execution(* com.*.*.*.*.service.impl.*.*(..))||

execution(* com.*.*.*.*.*.dao.*.*(..))||
execution(* com.*.*.*.*.*.service.impl.*.*(..))||

execution(* com.*.*.*.*.*.*.dao.*.*(..))||
execution(* com.*.*.*.*.*.*.service.impl.*.*(..))||

execution(* com.platform.framework.dao.jpa.BaseDaoImpl.*(..))"/>
<aop:around method="exec"  pointcut-ref="tranMethod" />
</aop:aspect>
</aop:config>

<bean id="baseDao" class="com.platform.framework.dao.jpa.BaseDaoImpl">
<property name="emf" ref="entityManagerFactory"/>
</bean>
</beans>

package com.platform.framework.dao.jpa; 
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction; 
import org.apache.log4j.Logger;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
 
/**
 * @describe JPA事务管理
 * @author lry
 * @since：2014-05-23
 * 
 */
public class TransactionHandler { 
private static final Logger log = Logger
.getLogger(TransactionHandler.class); 
private String[] txmethod;// 配置事务的传播特性方法 
private EntityManagerFactory entityManagerFactory;// JPA工厂 
public Object exec(ProceedingJoinPoint point) throws Throwable {
 
Signature signature = point.getSignature();
 log.debug(point.getTarget().getClass().getName() + "."
 + signature.getName() + "()");
Boolean isTransaction = false;
for (String method : txmethod) {
if (signature.getName().startsWith(method)) {// 以method开头的方法打开事务
isTransaction = true;
break;
}
}
 
// JPA->Hibernate
if (point.getTarget() instanceof EntityManagerFactoryProxy) {
 
// 获得被代理对象
EntityManagerFactoryProxy emfp = (EntityManagerFactoryProxy) point
.getTarget();
EntityManager em = emfp.getEntityManager();
if (em != null) {// 如果对象已经有em了就不管
return point.proceed();
} else {
em = entityManagerFactory.createEntityManager();
}
 log.debug("JPA->Hibernate open connection...");
if (isTransaction) {
EntityTransaction t = null;
try {
 
// 打开连接并开启事务
 log.debug("JPA->Hibernate begin transaction...");
t = em.getTransaction();
if (!t.isActive())
t.begin();
emfp.setEntityManager(em);
Object obj = point.proceed();
 
// 提交事务
log.debug("JPA->Hibernate commit...");
t.commit();
return obj;
} catch (Exception e) {
if (t != null) {
log.debug("JPA->Hibernate error...,rollback..."
+ e.getMessage());
t.rollback();
}
e.printStackTrace();
throw e;
} finally {
if (em != null && em.isOpen()) {// 关闭连接
em.close();
log.debug("JPA->Hibernate close connection...");
}
emfp.setEntityManager(null);
}
} else {
try {
emfp.setEntityManager(em);
return point.proceed();
} catch (Exception e) {
log.debug("JPA->Hibernate error..." + e.getMessage());
e.printStackTrace();
throw e;
} finally {
if (em != null && em.isOpen()) {// 关闭连接
em.close();
log.debug("JPA->Hibernate close connection...");
}
emfp.setEntityManager(null);
}
}
} else {
return point.proceed();
}
}
 
public String[] getTxmethod() {
return txmethod;
}
 
public void setTxmethod(String[] txmethod) {
this.txmethod = txmethod;
}
 
public void setEntityManagerFactory(
EntityManagerFactory entityManagerFactory) {
this.entityManagerFactory = entityManagerFactory;
} 
}

package com.platform.framework.dao.jpa; 
import java.util.Collection; 
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
 
/**
 * EntityManager管理器
 * 
 * @author：yangjian1004
 * @since：2011-11-30 16:14:24 AM
 */
public class EntityManagerFactoryProxy { 
private static ThreadLocal<EntityManager> emThreadLocal = new ThreadLocal<EntityManager>();
private static EntityManagerFactory emf;
 
public void setEmf(EntityManagerFactory emf) {
EntityManagerFactoryProxy.emf = emf;
}
 
public static EntityManagerFactory getEmf() {
return emf;
}
 
public EntityManager getEntityManager() {
return emThreadLocal.get();
}
 
public void setEntityManager(EntityManager em) {
emThreadLocal.set(em);
}
 
/**
 * 创建查询条件
 * 
 * @param name
 *            字段名称
 * @param values
 *            字段值
 */
public String createInCondition(String name, Collection<String> values) {
if (values == null || values.size() == 0) {
return "1<>1";
}
StringBuffer sb = new StringBuffer();
sb.append(name + " in(");
for (String id : values) {
sb.append("'" + id + "',");
}
String hsqlCondition = sb.substring(0, sb.length() - 1) + ")";
return hsqlCondition;
}
}

package com.platform.framework.dao.jpa; 
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List; 
/**
 * Page基类<br>
 * 
 * @describe：分页
 */
public class Page<T> implements Serializable { 
private static final long serialVersionUID = 665620345605746930L;
/** 总条数 */
private int count;
/** 页码 */
private int pageNo;
/** 每页显示多少条 */
private int rowsPerPage;
/** 总页数 */
private int totalPageCount;
/** 起始条数 */
private int firstRow;
/** 结束条数 */
private int lastRow;
/** 查询结果集合形式的结果 */
private List<T> result;
/** 查询结果对象形式的结果 */
public Object obj; 
public Integer code; // 返回码
private boolean success = true;
private String message; 
public Page() {
} 
public Page(List<T> list) {
this(list.size(), 1, list.size(), list);
} 
public Page(int count, int pageNo, int rowsPerPage, List<T> result) {
if (rowsPerPage < 1) {
rowsPerPage = 1;
}
this.count = count;
this.pageNo = pageNo;
this.result = result;
this.rowsPerPage = rowsPerPage;
if (this.result == null)
this.result = new ArrayList<T>();
totalPageCount = count / rowsPerPage;
if (count - (count / rowsPerPage) * rowsPerPage > 0)
totalPageCount++;
if (count == 0) {
totalPageCount = 0;
pageNo = 0;
}
 
firstRow = (pageNo - 1) * rowsPerPage + 1;
if (count == 0) {
firstRow = 0;
}
lastRow = (pageNo) * rowsPerPage;
if (lastRow > count) {
lastRow = count;
}
}
 
/** 返回每页的条数 */
public int getCount() {
return count;
}
 
public List<T> getResult() {
return result;
}
 
public int getPageNo() {
return pageNo;
}
 
/** 返回每页的条数 */
public int getRowsPerPage() {
return rowsPerPage;
}
 
/** 返回总的页数 */
public int getTotalPageCount() {
return totalPageCount;
}
 
public void setPageNo(int pageNo) {
this.pageNo = pageNo;
}
 
public void setRowsPerPage(int rowsPerPage) {
this.rowsPerPage = rowsPerPage;
}
 
public int getFirstRow() {
return firstRow;
}
 
public int getLastRow() {
return lastRow;
}
 
public void setFirstRow(int firstRow) {
this.firstRow = firstRow;
}
 
public void setLastRow(int lastRow) {
this.lastRow = lastRow;
}
 
public void setCount(int count) {
this.count = count;
}
 
public void setTotalPageCount(int totalPageCount) {
this.totalPageCount = totalPageCount;
}
 
public void setResult(List<T> result) {
this.result = result;
}
 
public Object getObj() {
return obj;
}
 
public void setObj(Object obj) {
this.obj = obj;
}
 
public boolean isSuccess() {
return success;
}
 
public void setSuccess(boolean success) {
this.success = success;
}
 
public String getMessage() {
return message;
}
 
public void setMessage(String message) {
this.message = message;
}
 
/**
 * 计算起始条数
 */
public static int calc(int pageNo, int rowsPerPage, int count) {
if (pageNo <= 0)
pageNo = 1;
if (rowsPerPage <= 0)
rowsPerPage = 10;
 
// 当把最后一页数据删除以后,页码会停留在最后一个上必须减一
int totalPageCount = count / rowsPerPage;
if (pageNo > totalPageCount && (count % rowsPerPage == 0)) {
pageNo = totalPageCount;
}
if (pageNo - totalPageCount > 2) {
pageNo = totalPageCount + 1;
}
int firstRow = (pageNo - 1) * rowsPerPage;
if (firstRow < 0) {
firstRow = 0;
}
return firstRow;
} 
}

package com.platform.framework.dao.jpa; 
import java.io.Serializable;
import java.util.List; 
import javax.persistence.EntityManager;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Selection;
import javax.persistence.metamodel.EntityType; 
import org.apache.log4j.Logger; 
import com.google.common.base.Strings;
/**
 * IBaseDao接口实现了BaseDaoImpl类<br>
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
public class BaseDaoImpl<T> extends EntityManagerFactoryProxy implements IBaseDao { 
private static Logger log = Logger.getLogger(BaseDaoImpl.class); 
/** 每次批量操作数 */
private int batchSize = 50;
 
/** 设置每次操作数 */
public void setBatchSize(int batchSize) {
this.batchSize = batchSize;
}
 
public <E> E get(Class clazz, Serializable id) {
return (E) getEntityManager().find(clazz, id);
}
 
/**
 * 插入记录
 * 
 * @param entity
 *            要插入的记录
 */
public void insert(Object entity) {
if (entity instanceof List) {
insertList((List) entity);
return;
} else if (entity instanceof Object[]) {
return;
}
try {
getEntityManager().persist(entity);
} catch (Exception e) {
e.printStackTrace();
}
}
 
/**
 * 批量增加
 * 
 * @param list
 *            要新增的数据
 */
public void insertList(List list) {
EntityManager entityManager = getEntityManager();
if (list == null || list.size() == 0) {
return;
}
int i = 0;
for (Object o : list) {
insert(o);
if (i % batchSize == 0) {
entityManager.flush();
}
i++;
}
log.debug(list.get(0).getClass() + "批量增加数据" + i + "条");
}
 
/**
 * 更新记录
 * 
 * @param entity
 *            要更新的记录
 */
public void update(Object entity) {
if (entity instanceof List) {
this.updateList((List) entity);
return;
}
getEntityManager().merge(entity);
}
 
/** 更新list */
public void updateList(List list) {
for (Object entity : list) {
this.update(entity);
}
}
 
/**
 * 删除记录
 * 
 * @param entity
 *            要删除的记录
 */
public void delete(Object entity) {
if (entity instanceof List) {
List list = (List) entity;
for (Object o : list) {
getEntityManager().remove(o);
}
} else {
getEntityManager().remove(entity);
}
}
 
public <E extends Serializable> List<E> query(String jpql) {
return getEntityManager().createQuery(jpql).getResultList();
}
 
public Integer updateJpql(String jpql) {
return getEntityManager().createQuery(jpql).executeUpdate();
}
 
public Integer updateSql(String sql) {
return getEntityManager().createNativeQuery(sql).executeUpdate();
}
 
public <E extends Serializable> List<E> queryBySql(String sql) {
return getEntityManager().createNativeQuery(sql).getResultList();
}
 
/**
 * 查询记录
 * 
 * @param clazz
 *            要查询的实体类
 * @param hqlCondition
 *            查询条件
 */
public <E extends Serializable> List<E> query(Class clazz, String hqlCondition) {
return getEntityManager().createQuery("select t from " + clazz.getName() + " as t where " + hqlCondition)
.getResultList();
}
 
public void delete(Class entity, String jpqlCondition) {
if (Strings.isNullOrEmpty(jpqlCondition)) {
jpqlCondition = "1=1";
}
int no = updateJpql("delete " + entity.getName() + " where " + jpqlCondition);
log.debug(entity.getName() + "删除" + no + "条数据");
}
 
/**
 * 根据ids删除数据
 * 
 * @param entity
 *            删除实体类
 * @param ids
 *            删除条件
 */
public void delete(Class entity, List ids) {
String idName = getIdName(entity, getEntityManager());
StringBuffer sb = new StringBuffer();
sb.append(idName + " in(");
for (int i = 0; i < ids.size(); i++) {
sb.append("'" + ids.get(i) + "',");
}
String jpqlCondition = sb.substring(0, sb.length() - 1) + ")";
delete(entity, jpqlCondition);
}
 
public <E extends Serializable> List<E> query(String jpql, int firstResult, int maxResults) {
List result = getEntityManager().createQuery(jpql).setFirstResult(firstResult).setMaxResults(maxResults)
.getResultList();
return result;
}
 
public <E extends Serializable> List<E> queryBySql(String sql, int firstResult, int maxResults) {
return getEntityManager().createNativeQuery(sql).setFirstResult(firstResult).setMaxResults(maxResults)
.getResultList();
}
 
public <E extends Serializable> List<E> queryAll(Class clazz) {
CriteriaQuery criteriaQuery = getEntityManager().getCriteriaBuilder().createQuery(clazz);
criteriaQuery.from(clazz);
return getEntityManager().createQuery(criteriaQuery).getResultList();
}
 
public Page queryPageByJpql(String jpql, int pageNo, int rowsPerPage) {
if (pageNo <= 0)
pageNo = 1;
if (rowsPerPage <= 0)
rowsPerPage = 7;
log.debug("-----开始查询,页码:" + pageNo + ",每页显示:" + rowsPerPage + "----");
 
String countJpql = "select count(*) from (" + jpql + ")";
int count = getCount(countJpql).intValue();
 
// 当把最后一页数据删除以后,页码会停留在最后一个上必须减一
int totalPageCount = count / rowsPerPage;
if (pageNo > totalPageCount && (count % rowsPerPage == 0)) {
pageNo = totalPageCount;
}
if (pageNo - totalPageCount > 2) {
pageNo = totalPageCount + 1;
}
int firstResult = (pageNo - 1) * rowsPerPage;
if (firstResult < 0) {
firstResult = 0;
}
List result = getEntityManager().createQuery(jpql).setFirstResult(firstResult).setMaxResults(rowsPerPage)
.getResultList();
return new Page(count, pageNo, rowsPerPage, result);
}
 
public Long getCount(String jpql) {
return (Long) getEntityManager().createQuery(jpql).getResultList().get(0);
}
 
/***
 * 
 * @Method updateJpql
 * @Description 根据传入的带有占位符的sql语句, 做增删改操作 例如
 *              updateJpql("update user t set t.name=? where t.id=?"
 *              ,{[zhongxiang],[23]})
 * @Author 钟翔/zhongxiang
 * @Date 2012-8-9 下午3:38:35
 * @param jpql
 *            占位符式的sql
 * @param paramList
 *            list里面装有[zhongxiang , 23]
 */
public void updateJpql(String jpql, List paramList) {
javax.persistence.Query query = getEntityManager().createQuery(jpql);
for (int i = 0; i < paramList.size(); i++) {
query.setParameter(i + 1, paramList.get(i));
}
query.executeUpdate();
}
 
/**
 * 统计记录
 * 
 * @param query
 *            统计条件
 */
public Long getCount(Query query) {
Selection selection = query.getCriteriaQuery().getSelection();
query.getCriteriaQuery().select(query.getCriteriaBuilder().count(query.getFrom()));
Long count = (Long) getEntityManager().createQuery(query.newCriteriaQuery()).getResultList().get(0);
query.getCriteriaQuery().select(selection);
return count;
}
 
/**
 * 分页查询
 * 
 * @param query
 *            查询条件
 * @param pageNo
 *            页号
 * @param rowsPerPage
 *            每页显示条数
 */
public Page queryPage(Query query, int pageNo, int rowsPerPage) {
if (pageNo <= 0)
pageNo = 1;
if (rowsPerPage <= 0)
rowsPerPage = 7;
log.debug(query.getClazz() + "-----开始查询,页码:" + pageNo + ",每页显示:" + rowsPerPage + "----");
log.debug("查询条件:");
for (Predicate cri : query.getPredicates())
log.debug(cri);
 
int count = getCount(query).intValue();
 
// 当把最后一页数据删除以后,页码会停留在最后一个上必须减一
int totalPageCount = count / rowsPerPage;
if (pageNo > totalPageCount && (count % rowsPerPage == 0)) {
pageNo = totalPageCount;
}
if (pageNo - totalPageCount > 2) {
pageNo = totalPageCount + 1;
}
int firstResult = (pageNo - 1) * rowsPerPage;
if (firstResult < 0) {
firstResult = 0;
}
List result = getEntityManager().createQuery(query.newCriteriaQuery()).setFirstResult(firstResult)
.setMaxResults(rowsPerPage).getResultList();
return new Page(count, pageNo, rowsPerPage, result);
}
 
/**
 * 根据query查找记录
 * 
 * @param query
 *            查询条件
 * @param firstResult
 *            起始行
 * @param maxResults
 *            结束行
 */
public <E extends Serializable> List<E> query(Query query, int firstResult, int maxResults) {
List result = getEntityManager().createQuery(query.newCriteriaQuery()).setFirstResult(firstResult)
.setMaxResults(maxResults).getResultList();
return result;
}
 
/**
 * 根据query查找记录
 * 
 * @param query
 *            查询条件
 */
public <E extends Serializable> List<E> query(Query query) {
return getEntityManager().createQuery(query.newCriteriaQuery()).getResultList();
}

/**
 * 获得主键名称
 * 
 * @param clazz
 *            操作是实体对象
 * @param EntityManager
 *            jpa的entityManager工厂
 * @return 初建名称
 * */
public static String getIdName(Class clazz, EntityManager entityManager) {
EntityType entityType = entityManager.getMetamodel().entity(clazz);
return entityType.getId(entityType.getIdType().getJavaType()).getName();
}
}

package com.platform.framework.dao.jpa; 
import java.io.Serializable;
import java.util.List; 
import javax.persistence.EntityManager;
 
/**
 * IBaseDao基类<br>
 * 
 * @describe：系统基础JPA Dao接口
 */
@SuppressWarnings({ "rawtypes" })
public interface IBaseDao {

public EntityManager getEntityManager(); 
public <E> E get(Class clazz, Serializable id); 
/**
 * 插入记录
 * 
 * @param entity
 *            要插入的记录
 */
public void insert(Object entity);
 
/**
 * 更新记录
 * 
 * @param entity
 *            要更新的记录
 */
public void update(Object entity);
 
/** 更新list */
public void updateList(List list);
 
/**
 * 删除记录
 * 
 * @param entity
 *            要删除的记录
 */
public void delete(Object entity);
 
/**
 * 删除记录
 * 
 * @param entity
 *            要删除的记录
 */
public void delete(Class entity, List ids);
 
/**
 * 删除记录
 * 
 * @param entity
 *            要删除的记录
 */
public void delete(Class entity, String jpqlCondition);
 
/**
 * 统计记录
 * 
 * @param query
 *            统计条件
 */
public Long getCount(Query query); 
public Long getCount(String jpql);
 
/**
 * 分页查询
 * 
 * @param query
 *            查询条件
 * @param pageNo
 *            页号
 * @param rowsPerPage
 *            每页显示条数
 */
public Page queryPage(Query query, int pageNo, int rowsPerPage);
 
/**
 * 根据query查找记录
 * 
 * @param query
 *            查询条件
 * @param firstResult
 *            起始行
 * @param maxResults
 *            结束行
 */
public <E extends Serializable> List<E> query(Query query, int firstResult, int maxResults);
 
/**
 * 根据query查找记录
 * 
 * @param query
 *            查询条件
 */
public <E extends Serializable> List<E> query(Query query);
 
/**
 * 执行更新操作的jpql语句
 * 
 * @param jpql
 *            要执行的jpql语句
 */
public <E extends Serializable> List<E> query(String jpql); 
public <E extends Serializable> List<E> queryAll(Class clazz); 
public <E extends Serializable> List<E> query(String jpql, int firstResult, int maxResults);
 
/**
 * 执行查询操作的sql语句
 * 
 * @param sql
 *            要执行的sql语句
 */
public <E extends Serializable> List<E> queryBySql(String sql); 
public <E extends Serializable> List<E> queryBySql(String sql, int firstResult, int maxResults);
 
/**
 * 查询记录
 * 
 * @param clazz
 *            要查询的实体类
 * @param hqlCondition
 *            查询条件
 */
public <E extends Serializable> List<E> query(Class clazz, String hqlCondition);
 
/**
 * 执行更新操作的sql语句
 * 
 * @param sql
 *            要执行的sql语句
 */
public Integer updateSql(String sql); 
public Integer updateJpql(String jpql); 
public Page queryPageByJpql(String hql, int pageNo, int rowsPerPage); 
public void updateJpql(String jpql, List paramList); 
}