扩展Koala的KoalaLegacyEntity,增强其CRUD方面的功能——持续更新中
这段时间在开发“镁光城”项目的时候使用到了开源的Koala系统，使用过程中有不少心得，进行了整理。 下面介绍的是“扩展Koala的KoalaLegacyEntity,增强其CRUD方面的功能” 使用过程中觉得Koala的基类KoalaLegacyEntity提供的CRUD方面的功能太简单，所以对其进行了扩展。 欢迎进行拍砖。
1.BaseEntity，继承KoalaLegacyEntity，对其进行了扩展
BaseEntity是主类，扩展的CRUD方法都在这个类里面，继承这个类的实体可直接使用扩展的方法，提高开发效率。
另外，BaseEntity类使用到了两个工具类JPQLUtil和EntityUtil，下面会分别介绍。
package com.shanlan.basic.core.domain;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.collections4.MapUtils;
import org.apache.commons.lang3.StringUtils;
import org.dayatang.domain.Entity;
import org.dayatang.domain.InstanceFactory;
import org.dayatang.domain.JpqlQuery;
import org.dayatang.querychannel.QueryChannelService;
import org.dayatang.utils.Page;
import org.openkoala.koala.commons.domain.KoalaLegacyEntity;
import com.shanlan.common.util.EntityUtil;
import com.shanlan.common.util.JPQLUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Created by albertliu on 14/11/25.
*/
public class BaseEntity extends KoalaLegacyEntity {
/**
*
*/
private static final long serialVersionUID = 6545100226409647983L;
private static final Logger logger = LoggerFactory
.getLogger(BaseEntity.class);
protected static QueryChannelService getQueryChannelService() {
QueryChannelService queryChannel = null;
if (queryChannel == null) {
queryChannel = InstanceFactory.getInstance(
QueryChannelService.class, "queryChannel");
}
return queryChannel;
}
/**
* 获取业务主键。业务主键是判断相同类型的两个实体在业务上的等价性的依据。如果相同类型的两个
* 实体的业务主键相同，则认为两个实体是相同的，代表同一个实体。
* <p/>
* 业务主键由实体的一个或多个属性组成。
*
* @return 组成业务主键的属性的数组。
*/
@Override
public String[] businessKeys() {
return new String[0];
}
/**
* 取得实体的Id。实体类的每个实例都必须有个唯一Id以标识自身。 实体Id必须是可序列化的。
*
* @return 实体实例的 Id.
*/
@Override
public Serializable getId() {
return null;
}
/**
* 更新一条记录中的一个属性
*
* @param entityName 要更新的实体名
* @param setPropertyName 要更新的属性名
* @param setPropertyValue 要更新的属性值
* @param wherePropertyName 约束条件属性名
* @param wherePropertyValue 约束条件属性值
* @return
*/
public static boolean updateOneRowOneProperty(String entityName,
String setPropertyName, Object setPropertyValue,
String wherePropertyName, Object wherePropertyValue) {
boolean result = false;
if (StringUtils.isNotBlank(entityName)
&& StringUtils.isNotBlank(setPropertyName)
&& setPropertyValue != null
&& StringUtils.isNotBlank(wherePropertyName)
&& wherePropertyValue != null) {
StringBuffer JPQL = JPQLUtil.updatePropertyByProperty(entityName,
setPropertyName, wherePropertyName);
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
jpqlQuery.setParameters(setPropertyValue, wherePropertyValue);
int updateCount = jpqlQuery.executeUpdate();
if (updateCount == 1) {
result = true;
}
}
return result;
}
/**
* 更新多个属性
*
* @param entityName 要更新的实体名
* @param setPropertyAndValueMap 要更新的属性名与值Map
* @param wherePropertyName 约束条件属性名
* @param wherePropertyValue 约束条件属性值
* @return
*/
public static boolean update(String entityName,
Map<String, Object> setPropertyAndValueMap,
String wherePropertyName, Object wherePropertyValue) {
if (StringUtils.isNotBlank(entityName)
&& MapUtils.isNotEmpty(setPropertyAndValueMap)
&& StringUtils.isNotBlank(wherePropertyName)
&& wherePropertyValue != null) {
StringBuffer JPQL = JPQLUtil.updateAndSet(entityName);
int i = 0;
List<Object> conditionValues = new ArrayList<Object>();
for (Map.Entry<String, Object> entry : setPropertyAndValueMap
.entrySet()) {
String property = entry.getKey();
Object value = entry.getValue();
if (StringUtils.isBlank(property) && value == null) {
continue;
}
i++;
if (i == 1) {
JPQL.append(JPQLUtil.appendEqualQuestionSign(entityName,
property));
conditionValues.add(value);
} else if (i > 1) {
JPQL.append(JPQLUtil.appendCommaEqualQuestionSign(
entityName, property));
conditionValues.add(value);
}
}
JPQL.append(JPQLUtil.whereEntityDotPropertyNameEqualQuestionSign(
entityName, wherePropertyName));
conditionValues.add(wherePropertyValue);
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
jpqlQuery.setParameters(conditionValues);
int updateCount = jpqlQuery.executeUpdate();
logger.info("JPQL:'" + JPQL.toString() + "' conditionValues:'"
+ StringUtils.join(conditionValues, ",") + "' UpdateCount:"
+ updateCount);
if ("id".equals(wherePropertyName)) {// 如果是根据Id更新，则只会更新一条记录
return updateCount == 1;
} else {
return true;
}
}
return false;
}
/**
* 更新实体中不为null的字段
*
* @return
* @throws IllegalAccessException
*/
public Boolean update() throws IllegalAccessException {
if (this.getId() != null) {
Integer id = (Integer) this.getId();
Map<String, Object> setPropertyValueMap = EntityUtil
.getNotNullAndIdPropertyNameAndValueMap(this);
return update(this.getClass().getSimpleName(), setPropertyValueMap,
id);
} else if (this.getId() == null) {
throw new NullPointerException("id不能为空");
}
return false;
}
/**
* 根据Id更新多个属性
*
* @param entityName 要更新的实体名
* @param setPropertyAndValueMap 要更新的属性名与值Map
* @param id id的值
* @return
*/
public static boolean update(String entityName,
Map<String, Object> setPropertyAndValueMap, Integer id) {
return update(entityName, setPropertyAndValueMap, "id", id);
}
/**
* 更新一条记录中的一个属性
*
* @param entityName 要更新的实体名
* @param setPropertyName 要更新的属性名
* @param setPropertyValue 要更新的属性值
* @param id id值
* @return
*/
public static boolean updateOneRowOneProperty(String entityName,
String setPropertyName, Object setPropertyValue, Integer id) {
boolean result = false;
if (StringUtils.isNotBlank(entityName)
&& StringUtils.isNotBlank(setPropertyName)
&& setPropertyValue != null && id != null) {
StringBuffer JPQL = JPQLUtil.updatePropertyByProperty(entityName,
setPropertyName, "id");
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
jpqlQuery.setParameters(setPropertyValue, id);
int updateCount = jpqlQuery.executeUpdate();
if (updateCount == 1) {
result = true;
}
}
return result;
}
/**
* 根据查询条件列出实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName 条件属性名
* @param wherePropertyValues 条件属性值列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> list(Class<T> clazz,
String wherePropertyName, Collection<?> wherePropertyValues) {
List<T> entityList = new ArrayList<T>();
if (clazz != null && CollectionUtils.isNotEmpty(wherePropertyValues)) {
StringBuffer JPQL = JPQLUtil.selectByPropertyIn(clazz,
wherePropertyName, wherePropertyValues);
entityList = getRepository().createJpqlQuery(JPQL.toString())
.list();
}
return entityList;
}
/**
* 根据查询条件列出实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName2 条件属性名
* @param wherePropertyValues2 条件属性值列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> list(Class<T> clazz,
String wherePropertyName1, Object wherePropertyValue1,
String wherePropertyName2, Collection<?> wherePropertyValues2) {
List<T> entityList = new ArrayList<T>();
String entityName = clazz.getSimpleName();
StringBuffer JPQL = JPQLUtil.selectEntity(entityName);
JPQL.append(JPQLUtil.fromEntity(entityName));
JPQL.append(JPQLUtil.whereIdentity());
List<Object> conditionValues = new ArrayList<Object>();
if (StringUtils.isNotBlank(wherePropertyName1)
&& wherePropertyValue1 != null) {
JPQL.append(JPQLUtil.andPropertyEqualQuestionSign(entityName,
wherePropertyName1));
conditionValues.add(wherePropertyValue1);
}
if (StringUtils.isNotBlank(wherePropertyName2)
&& CollectionUtils.isNotEmpty(wherePropertyValues2)) {
JPQL.append(JPQLUtil.andPropertyIn(entityName, wherePropertyName2,
wherePropertyValues2));
}
entityList = getRepository().createJpqlQuery(JPQL.toString())
.setParameters(conditionValues).list();
return entityList;
}
/**
* 根据查询条件列出自关联的实体,JQPL语句形如: Select entityB From entity As entityA,entity As
* entityB Where
* entityA.entityNameARePropertyName=entityB.entityNameBRePropertyName And
* entityA.entityAWherePropertyName1=entityAWherePropertyValue1 And
* entityA.entityAWherePropertyName2 In (entityAWherePropertyValues2)
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param entityNameARePropertyName 进行自关联的属性名
* @param entityNameBRePropertyName 进行自关联的属性名
* @param entityAWherePropertyName1 entityB条件属性名
* @param entityAWherePropertyValue1 entityB条件属性值列表
* @param entityAWherePropertyName2 entityB条件属性名
* @param entityAWherePropertyValues2 entityB条件属性值列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> listSelfRelation(Class<T> clazz,
String entityNameARePropertyName, String entityNameBRePropertyName,
String entityAWherePropertyName1,
Object entityAWherePropertyValue1,
String entityAWherePropertyName2,
Collection<?> entityAWherePropertyValues2) {
List<T> entityList = new ArrayList<T>();
String entityNameA = EntityUtil.getEntityNameAppendA(clazz);
String entityNameB = EntityUtil.getEntityNameAppendB(clazz);
StringBuffer JPQL = JPQLUtil.selectEntity(entityNameB);
JPQL.append(JPQLUtil.fromTowEntities(clazz));
JPQL.append(JPQLUtil.whereIdentity());
if (StringUtils.isNotBlank(entityNameARePropertyName)
&& StringUtils.isNotBlank(entityNameBRePropertyName)) {
JPQL.append(JPQLUtil.andTwoEntityRelation(entityNameA,
entityNameARePropertyName, entityNameB,
entityNameBRePropertyName));
}
List<Object> conditionValues = new ArrayList<Object>();
if (StringUtils.isNotBlank(entityAWherePropertyName1)
&& entityAWherePropertyValue1 != null) {
JPQL.append(JPQLUtil.andPropertyEqualQuestionSign(entityNameA,
entityAWherePropertyName1));
conditionValues.add(entityAWherePropertyValue1);
}
if (StringUtils.isNotBlank(entityAWherePropertyName2)
&& CollectionUtils.isNotEmpty(entityAWherePropertyValues2)) {
JPQL.append(JPQLUtil.andPropertyIn(entityNameA,
entityAWherePropertyName2, entityAWherePropertyValues2));
}
entityList = getRepository().createJpqlQuery(JPQL.toString())
.setParameters(conditionValues).list();
return entityList;
}
/**
* 根据查询条件列出自关联的实体,JQPL语句形如: Select entityB From entity As entityA,entity As
* entityB Where
* entityA.entityNameARePropertyName=entityB.entityNameBRePropertyName And
* entityA.entityAWherePropertyName1=entityAWherePropertyValue1
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param entityAWherePropertyName entityB条件属性名
* @param entityAWherePropertyValue entityB条件属性值列
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> listSelfRelation(Class<T> clazz,
String entityNameARePropertyName, String entityNameBRePropertyName,
String entityAWherePropertyName, Object entityAWherePropertyValue) {
return listSelfRelation(clazz, entityNameARePropertyName,
entityNameBRePropertyName, entityAWherePropertyName,
entityAWherePropertyValue, null, null);
}
/**
* 根据id列表列出实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param ids id列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> list(Class<T> clazz,
Collection<?> ids) {
List<T> entityList = new ArrayList<T>();
if (clazz != null && CollectionUtils.isNotEmpty(ids)) {
StringBuffer JPQL = JPQLUtil.selectByPropertyIn(clazz, "id", ids);
entityList = getRepository().createJpqlQuery(JPQL.toString())
.list();
}
return entityList;
}
/**
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName 条件属性名
* @param wherePropertyValues 条件属性值列表
* @return 符合条件的Id与实体自身的HashMap
*/
public static <T extends Entity> Map<Integer, T> getIdAndSelfMap(
Class<T> clazz, String wherePropertyName,
List<?> wherePropertyValues) {
Map<Integer, T> idAndSelfMap = new HashMap<Integer, T>();
List<T> entityList = list(clazz, wherePropertyName, wherePropertyValues);
for (T entity : entityList) {
idAndSelfMap.put((Integer) entity.getId(), entity);
}
return idAndSelfMap;
}
/**
* 分页查询实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName 条件属性名
* @param wherePropertyValue 条件属性值
* @param pageIndex 当前页
* @param pageSize 每页显示的数据量
* @param orderByPropertyName 进行排序的属性名，为null则不排序
* @param isDESC 是否按倒序排列，为null或false按升序排序
* @return 符合条件的实体列表
*/
public static <T extends Entity> Page<T> page(Class<T> clazz,
int pageIndex, int pageSize, String wherePropertyName,
Object wherePropertyValue, String orderByPropertyName,
Boolean isDESC) {
return page(clazz, wherePropertyName, wherePropertyValue, null, null,
pageIndex, pageSize, orderByPropertyName, isDESC);
}
/**
* 分页查询实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName 条件属性名
* @param wherePropertyValues 条件属性值列表
* @param pageIndex 当前页
* @param pageSize 每页显示的数据量
* @param orderByPropertyName 进行排序的属性名，为null则不排序
* @param isDESC 是否按倒序排列，为null或false按升序排序
* @return 符合条件的实体列表
*/
public static <T extends Entity> Page<T> page(Class<T> clazz,
String wherePropertyName, Collection<?> wherePropertyValues,
int pageIndex, int pageSize, String orderByPropertyName,
Boolean isDESC) {
Page<T> entityPage = new Page<T>(0, 0, pageSize, new ArrayList<T>());
String entityName = EntityUtil.getEntityName(clazz);
StringBuffer JPQL = JPQLUtil.selectByPropertyIn(entityName,
wherePropertyName, wherePropertyValues);
if (StringUtils.isNotBlank(JPQL)
&& CollectionUtils.isNotEmpty(wherePropertyValues)) {
if (StringUtils.isNotBlank(orderByPropertyName)) {
JPQL.append(JPQLUtil.orderBy(entityName, orderByPropertyName));
if (isDESC != null && isDESC) {
JPQL.append(JPQLUtil.orderDESC());
}
}
entityPage = getQueryChannelService()
.createJpqlQuery(JPQL.toString())
.setPage(pageIndex, pageSize).pagedList();
}
return entityPage;
}
/**
* 分页查询实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName1 条件1属性名
* @param wherePropertyValue1 条件1属性值列表
* @param wherePropertyName2 条件2属性名
* @param wherePropertyValues2 条件2属性值列表
* @param pageIndex 当前页
* @param pageSize 每页显示的数据量
* @param orderByPropertyName 进行排序的属性名，为null则不排序
* @param isDESC 是否按倒序排列，为null或false按升序排序
* @return 符合条件的实体列表
*/
public static <T extends Entity> Page<T> page(Class<T> clazz,
String wherePropertyName1, Object wherePropertyValue1,
String wherePropertyName2, Collection<?> wherePropertyValues2,
int pageIndex, int pageSize, String orderByPropertyName,
Boolean isDESC) {
Page<T> entityPage = new Page<T>(0, 0, pageSize, new ArrayList<T>());
String entityName = EntityUtil.getEntityName(clazz);
StringBuffer JPQL = JPQLUtil.selectEntity(entityName);
JPQL.append(JPQLUtil.fromEntity(entityName));
JPQL.append(JPQLUtil.whereIdentity());
List<Object> conditionValues = new ArrayList<Object>();
if (StringUtils.isNotBlank(wherePropertyName1)
&& wherePropertyValue1 != null) {
JPQL.append(JPQLUtil.andPropertyEqualQuestionSign(entityName,
wherePropertyName1));
conditionValues.add(wherePropertyValue1);
}
if (StringUtils.isNotBlank(wherePropertyName2)
&& CollectionUtils.isNotEmpty(wherePropertyValues2)) {
JPQL.append(JPQLUtil.andPropertyIn(entityName, wherePropertyName2,
wherePropertyValues2));
}
if (StringUtils.isNotBlank(orderByPropertyName)) {
JPQL.append(JPQLUtil.orderBy(entityName, orderByPropertyName));
if (isDESC != null && isDESC) {
JPQL.append(JPQLUtil.orderDESC());
}
}
entityPage = getQueryChannelService().createJpqlQuery(JPQL.toString())
.setParameters(conditionValues).setPage(pageIndex, pageSize)
.pagedList();
return entityPage;
}
/**
* 执行 Delete From entityName where propertyName In (propertyValues)
* 这种类型的删除语句
*
* @param entityName
* @param propertyName
* @param propertyValue
* @return
*/
public static boolean delete(String entityName, String propertyName,
Object propertyValue) {
if (propertyValue != null) {
StringBuffer JPQL = JPQLUtil.deleteByProperty(entityName,
propertyName);
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
jpqlQuery.setParameters(propertyValue);
int deleteCount = jpqlQuery.executeUpdate();
logger.info("JPQL:'" + JPQL.toString() + "' propertyValue1:'"
+ propertyValue + "' DeleteCount:" + deleteCount);
return true;
}
return false;
}
/**
* 执行 Delete From entityName where propertyName = ? 这种类型的删除语句
*
* @param clazz
* @param propertyName
* @param propertyValue
* @return
*/
public static boolean delete(Class clazz, String propertyName,
Object propertyValue) {
if (clazz != null && propertyValue != null) {
String entityName = clazz.getSimpleName();
StringBuffer JPQL = JPQLUtil.deleteByProperty(entityName,
propertyName);
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
jpqlQuery.setParameters(propertyValue);
int deleteCount = jpqlQuery.executeUpdate();
logger.info("JPQL:'" + JPQL.toString() + "' propertyValue1:'"
+ propertyValue + "' DeleteCount:" + deleteCount);
return true;
}
return false;
}
/**
* 执行 Delete From entityName where propertyName In (propertyValues)
* 这种类型的删除语句
*
* @param entityName
* @param propertyName
* @param propertyValues
* @return
*/
public static boolean delete(String entityName, String propertyName,
Collection<?> propertyValues) {
if (CollectionUtils.isNotEmpty(propertyValues)) {
StringBuffer JPQL = JPQLUtil.deleteByPropertyIn(entityName,
propertyName, propertyValues);
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
int deleteCount = jpqlQuery.executeUpdate();
logger.info("JPQL:'" + JPQL.toString() + "' DeleteCount:"
+ deleteCount);
if (deleteCount == propertyValues.size()) {
return true;
}
}
return false;
}
/**
* 执行 Delete From entityName where propertyName In (propertyValues)
* 这种类型的删除语句
*
* @param entityName
* @param propertyName1
* @param propertyValue1
* @param propertyName2
* @param propertyValues2
* @return
*/
public static boolean delete(String entityName, String propertyName1,
Object propertyValue1, String propertyName2,
Collection<?> propertyValues2) {
if ((StringUtils.isNotBlank(propertyName1) && StringUtils
.isNotBlank(propertyName2))
&& (propertyValue1 != null || CollectionUtils
.isNotEmpty(propertyValues2))) {
StringBuffer JPQL = JPQLUtil.deleteByProperty(entityName,
propertyName1);
JPQL.append(JPQLUtil.andPropertyIn(entityName, propertyName2,
propertyValues2));
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
jpqlQuery.setParameters(propertyValue1);
int deleteCount = jpqlQuery.executeUpdate();
logger.info("JPQL:'" + JPQL.toString() + "' propertyValue1:'"
+ propertyValue1 + "' DeleteCount:" + deleteCount);
return true;
}
return false;
}
/**
* 执行 Delete From entityName where propertyName In (propertyValues)
* 这种类型的删除语句
*
* @param clazz
* @param propertyName1
* @param propertyValue1
* @param propertyName2
* @param propertyValues2
* @return
*/
public static boolean delete(Class clazz, String propertyName1,
Object propertyValue1, String propertyName2,
Collection<?> propertyValues2) {
if ((StringUtils.isNotBlank(propertyName1) && StringUtils
.isNotBlank(propertyName2))
&& (propertyValue1 != null || CollectionUtils
.isNotEmpty(propertyValues2))) {
String entityName = clazz.getSimpleName();
StringBuffer JPQL = JPQLUtil.deleteByProperty(entityName,
propertyName1);
JPQL.append(JPQLUtil.andPropertyIn(entityName, propertyName2,
propertyValues2));
JpqlQuery jpqlQuery = new JpqlQuery(getRepository(),
JPQL.toString());
jpqlQuery.setParameters(propertyValue1);
int deleteCount = jpqlQuery.executeUpdate();
logger.info("JPQL:'" + JPQL.toString() + "' propertyValue1:'"
+ propertyValue1 + "' DeleteCount:" + deleteCount);
return true;
}
return false;
}
/**
* 执行 Delete From entityName where id In (ids) 这种类型的删除语句
*
* @param entityName
* @param ids
* @return
*/
public static boolean delete(String entityName, Collection<Integer> ids) {
return delete(entityName, "id", ids);
}
/**
* 执行 Delete From entityName where propertyName In (propertyValues)
* 这种类型的删除语句
*
* @param clazz 实体所属的类
* @param propertyName 属性名
* @param propertyValues 属性值列表
* @return
*/
public static boolean delete(Class clazz, String propertyName,
Collection<?> propertyValues) {
return delete(clazz.getSimpleName(), propertyName, propertyValues);
}
/**
* 执行 Delete From entityName where id In (ids) 这种类型的删除语句
*
* @param clazz 实体所属的类
* @param ids id列表
* @return
*/
public static boolean delete(Class clazz, Collection<Integer> ids) {
return delete(clazz.getSimpleName(), "id", ids);
}
}
1.1. JPQLUtil,用于拼接JPQL语句的工具类
package com.shanlan.common.util;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
/**
* Created by albertliu on 14-10-20.
*/
public class JPQLUtil {
/**
* 得到形如select xx from xx where xxx =?的Sql语句
*
* @param entityName
* @param wherePropertyName
* @return
*/
public static StringBuffer selectByProperty(String entityName,
String wherePropertyName) {
StringBuffer JPQL = new StringBuffer();
if (StringUtils.isNotBlank(entityName)
&& StringUtils.isNotBlank(wherePropertyName)) {
JPQL.append(selectEntity(entityName));
JPQL.append(fromEntity(entityName));
JPQL.append(whereEntityDotPropertyNameEqualQuestionSign(entityName,
wherePropertyName));
}
return JPQL;
}
/**
* 得到形如select xx from xx where xxx in()的Sql语句
*
* @param clazz
* @param propertyName
* @param propertyValues
* @return
*/
public static StringBuffer selectByPropertyIn(Class clazz,
String propertyName, Iterable<?> propertyValues) {
StringBuffer JPQL = new StringBuffer();
if (clazz != null && propertyValues != null) {
String entityName = clazz.getSimpleName();
JPQL.append(selectEntity(entityName));
JPQL.append(fromEntity(entityName));
JPQL.append(whereEntityDotPropertyNameInValue(entityName,
propertyName, propertyValues));
}
return JPQL;
}
/**
* 得到形如select xx from xx where xxx in()的Sql语句
*
* @param entityName
* @param wherePropertyName
* @param wherePropertyValues
* @return
*/
public static StringBuffer selectByPropertyIn(String entityName,
String wherePropertyName, Iterable<?> wherePropertyValues) {
StringBuffer JPQL = new StringBuffer();
if (StringUtils.isNotBlank(entityName)
&& StringUtils.isNotBlank(wherePropertyName)
&& wherePropertyValues != null) {
JPQL.append(selectEntity(entityName));
JPQL.append(fromEntity(entityName));
JPQL.append(whereEntityDotPropertyNameInValue(entityName,
wherePropertyName, wherePropertyValues));
}
return JPQL;
}
/**
* 得到形如select xx from xx where xxx not in()的Sql语句
*
* @param clazz
* @param propertyName
* @param propertyValues
* @return
*/
public static StringBuffer selectByPropertyNotIn(Class clazz,
String propertyName, java.lang.Iterable<?> propertyValues) {
StringBuffer JPQL = new StringBuffer();
if (clazz != null && propertyValues != null
&& StringUtils.isNotBlank(propertyName)) {
String entityName = clazz.getSimpleName();
JPQL.append("Select " + entityName);
JPQL.append(" From " + entityName + " " + entityName);
JPQL.append(" Where " + propertyName + " Not In ('"
+ StringUtils.join(propertyValues, "','") + "')");
}
return JPQL;
}
public static StringBuffer selectEntity(Class clazz) {
StringBuffer JPQL = new StringBuffer();
if (clazz != null) {
JPQL.append("Select " + clazz.getSimpleName());
}
return JPQL;
}
public static StringBuffer selectEntity(String entityName) {
StringBuffer JPQL = new StringBuffer();
if (StringUtils.isNotBlank(entityName)) {
JPQL.append("Select " + entityName + " ");
}
return JPQL;
}
/**
* 返回形如 Delete From xxx As xxx这种类型的StringBuffer
*
* @param entityName
* @return
*/
public static StringBuffer deleteEntity(String entityName) {
StringBuffer JPQL = new StringBuffer();
if (StringUtils.isNotBlank(entityName)) {
JPQL.append("Delete From "
+ EntityUtil.getEntityNameAndAlias(entityName) + " ");
}
return JPQL;
}
public static String fromEntity(String entity) {
return " From " + entity + " As " + entity;
}
/**
* 返回形如 Select entity From entity as entity
*
* @param entityName
* @return
*/
public static StringBuffer selectEntityFromEntity(String entityName) {
StringBuffer JPQL = selectEntity(entityName);
JPQL.append(fromEntity(entityName));
return JPQL;
}
/**
* 返回形如 From EntityA As EntityA,EntityB As EntityB 这样的字符串
*
* @param entity1
* @param entity2
* @return
*/
public static String fromTowEntities(String entity1, String entity2) {
return fromEntity(entity1) + " , " + entity2 + " As " + entity2;
}
/**
* 返回形如 From Entity As EntityA,Entity As EntityB 这样的字符串
*
* @param entity1
* @param entity2
* @return
*/
public static String fromTowEntities(String entityName, String entityNameA,
String entityNameB) {
return entityName + " As " + entityNameA + " , " + entityName + " As "
+ entityNameB;
}
/**
* 返回形如 From Entity As EntityA,Entity As EntityB 这样的字符串
*
* @param entity1
* @param entity2
* @return
*/
public static String fromTowEntities(Class clazz, String entityNameA,
String entityNameB) {
String entityName = EntityUtil.getEntityName(clazz);
return entityName + " As " + entityNameA + " , " + entityName + " As "
+ entityNameB;
}
/**
* 返回形如 From Entity As EntityA,Entity As EntityB 这样的字符串
*
* @param entity1
* @param entity2
* @return
*/
public static String fromTowEntities(Class clazz) {
String entityName = EntityUtil.getEntityName(clazz);
return " From "+entityName + " As " + EntityUtil.getEntityNameAppendA(clazz)
+ " , " + entityName + " As "
+ EntityUtil.getEntityNameAppendB(clazz);
}
/**
* 返回形如 From EntityA As EntityA 这样的字符串
*
* @param clazz
* @return
*/
public static String fromEntity(Class clazz) {
return " From " + EntityUtil.getEntityNameAndAlias(clazz);
}
/**
* 返回形如 From EntityA As EntityA,EntityB As EntityB 这样的字符串
*
* @param clazz1
* @param clazz2
* @return
*/
public static String fromTowEntities(Class clazz1, Class clazz2) {
return fromEntity(clazz1) + " , "
+ EntityUtil.getEntityNameAndAlias(clazz2);
}
/**
* 返回形如 Update EntityA As EntityA 这样的字符串
*
* @param clazz
* @return
*/
public static StringBuffer update(Class clazz) {
StringBuffer JPQL = new StringBuffer();
JPQL.append("Update ");
JPQL.append(EntityUtil.getEntityNameAndAlias(clazz));
return JPQL;
}
/**
* 返回形如 Update EntityA As EntityA Set 这样的字符串
*
* @param clazz
* @return
*/
public static StringBuffer updateAndSet(Class clazz) {
StringBuffer JPQL = new StringBuffer();
JPQL.append("Update ");
JPQL.append(EntityUtil.getEntityNameAndAlias(clazz));
JPQL.append(" Set ");
return JPQL;
}
/**
* 返回形如 Update EntityA As EntityA Set 这样的字符串
*
* @param entityName
* @return
*/
public static StringBuffer updateAndSet(String entityName) {
StringBuffer JPQL = new StringBuffer();
JPQL.append("Update ");
JPQL.append(EntityUtil.getEntityNameAndAlias(entityName));
JPQL.append(" Set ");
return JPQL;
}
/**
* 返回形如 Update EntityA As EntityA 这样的字符串
*
* @param entityName
* @return
*/
public static StringBuffer update(String entityName) {
StringBuffer JPQL = new StringBuffer();
JPQL.append("Update ");
JPQL.append(EntityUtil.getEntityNameAndAlias(entityName));
return JPQL;
}
/**
* @param clazz
* @param propertyName
* @param columnValue
* @param id
* @return
*/
public static StringBuffer updatePropertyById(Class clazz,
String propertyName, String columnValue, Integer id) {
StringBuffer JPQL = new StringBuffer();
if (clazz != null && StringUtils.isNotBlank(propertyName)) {
String entityName = clazz.getSimpleName();
JPQL.append("Update " + entityName + " " + entityName);
JPQL.append(" Set " + propertyName + "='" + columnValue + "'");
JPQL.append(" Where id='" + id + "'");
}
return JPQL;
}
/**
* 返回形如 Update entity AS entity set setPropertyName=? Where
* wherePropertyName=? 这种类型的JPQL语句
*
* @param clazz
* @param setPropertyName
* @param wherePropertyName
* @return
*/
public static StringBuffer updatePropertyByProperty(Class clazz,
String setPropertyName, String wherePropertyName) {
StringBuffer JPQL = new StringBuffer();
if (clazz != null && StringUtils.isNotBlank(setPropertyName)
&& StringUtils.isNotBlank(wherePropertyName)) {
String entityName = EntityUtil.getEntityName(clazz);
JPQL = update(entityName);
JPQL.append(setEqualQuestionSign(entityName, setPropertyName));
JPQL.append(whereEntityDotPropertyNameEqualQuestionSign(entityName,
wherePropertyName));
}
return JPQL;
}
/**
* 返回形如 Update entity AS entity set setPropertyName=? Where
* wherePropertyName=? 这种类型的JPQL语句
*
* @param entityName
* @param setPropertyName
* @param wherePropertyName
* @return
*/
public static StringBuffer updatePropertyByProperty(String entityName,
String setPropertyName, String wherePropertyName) {
StringBuffer JPQL = new StringBuffer();
if (StringUtils.isNotBlank(entityName)
&& StringUtils.isNotBlank(setPropertyName)
&& StringUtils.isNotBlank(wherePropertyName)) {
JPQL = update(entityName);
JPQL.append(setEqualQuestionSign(entityName, setPropertyName));
JPQL.append(whereEntityDotPropertyNameEqualQuestionSign(entityName,
wherePropertyName));
}
return JPQL;
}
/**
* 得到形如select xx from xx where id in()的Sql语句
*
* @param clazz
* @param ids
* @return
*/
public static StringBuffer selectByIdIn(Class clazz, List<Integer> ids) {
return selectByPropertyIn(clazz, "id", ids);
}
/**
* 得到形如select xx from xx where id in()的Sql语句
*
* @param entityName
* @param ids
* @return
*/
public static StringBuffer selectByIdIn(String entityName, List<Integer> ids) {
return selectByPropertyIn(entityName, "id", ids);
}
/**
* 得到形如select xx from xx where id not in()的Sql语句
*
* @param clazz
* @param ids
* @return
*/
public static StringBuffer selectByIdNotIn(Class clazz, List<Integer> ids) {
return selectByPropertyNotIn(clazz, "id", ids);
}
/**
* 在属性名后添加= ? 符号,比如属性名address的返回值会是 Entity.address= ?
*
* @param propertyName
* @return
*/
public static String appendEqualQuestionSign(String entityName,
String propertyName) {
return getEntityDotPropertyNameEqual(entityName, propertyName) + "? ";
}
/**
* 在属性名后添加 , Entity.property= ? 符号,比如属性名address的返回值会是 , Entity.address= ?
*
* @param entityName
* @param propertyName
* @return
*/
public static String appendCommaEqualQuestionSign(String entityName,
String propertyName) {
return ", " + getEntityDotPropertyNameEqual(entityName, propertyName)
+ "? ";
}
/**
* 在属性名前添加And，在其后添加= ? 符号,比如属性名address的返回值会是And address= ?
*
* @param propertyName
* @return
*/
public static String andPropertyEqualQuestionSign(String entityName,
String propertyName) {
return " And "
+ getEntityDotPropertyNameEqual(entityName, propertyName)
+ "? ";
}
/**
* 在属性名前添加And，在其后添加!= ? 符号,比如属性名address的返回值会是And address!= ?
*
* @param propertyName
* @return
*/
public static String andPropertyNotEqualQuestionSign(String entityName,
String propertyName) {
return " And "
+ getEntityDotPropertyNameNotEqual(entityName, propertyName)
+ "? ";
}
/**
* 在属性名前添加Set，在其后添加= ? 符号,比如属性名address的返回值会是Set address= ?
*
* @param propertyName
* @return
*/
public static String setEqualQuestionSign(String entityName,
String propertyName) {
return " Set " + entityName + "." + propertyName + "= ? ";
}
/**
* 获取形如 Where entity.property=? 类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String whereEntityDotPropertyNameEqualQuestionSign(
String entityName, String propertyName) {
return " Where "
+ getEntityDotPropertyNameEqual(entityName, propertyName)
+ "? ";
}
/**
* 在属性名后添加 like ? 符号,比如属性名address的返回值会是address like ?
*
* @param propertyName
* @return
*/
public static String andPropertyLikeQuestionSign(String entityName,
String propertyName) {
return " And " + getEntityDotPropertyName(entityName, propertyName)
+ " Like ? ";
}
/**
* 在属性名后添加 In() 符号,比如属性名address的返回值会是address In ('XX','XX')
*
* @param propertyName
* @return
*/
public static String andPropertyIn(String entityName, String propertyName,
Iterable<?> propertyValues) {
return " And " + getEntityDotPropertyName(entityName, propertyName)
+ " In ('" + StringUtils.join(propertyValues, "','") + "')";
}
/**
* 在属性名前添加And，在其后添加 Not In() 符号,比如属性名address的返回值会是 And address Not In
* ('XX','XX')
*
* @param propertyName
* @return
*/
public static String andPropertyNotIn(String entityName,
String propertyName, Iterable<?> propertyValues) {
return " And " + getEntityDotPropertyName(entityName, propertyName)
+ " Not In ('" + StringUtils.join(propertyValues, "','") + "')";
}
/**
* 在属性名后添加>= ? 符号,比如属性名address的返回值会是address>= ?
*
* @param propertyName
* @return
*/
public static String andPropertyGreaterEqualQuestionSign(String entityName,
String propertyName) {
return " And " + getEntityDotPropertyName(entityName, propertyName)
+ ">= ? ";
}
/**
* 在属性名后添加<= ? 符号,比如属性名address的返回值会是address<= ?
*
* @param propertyName
* @return
*/
public static String andPropertyLessEqualQuestionSign(String entityName,
String propertyName) {
return " And " + getEntityDotPropertyName(entityName, propertyName)
+ "<= ? ";
}
/**
* 关联两个实体，即返回形如 And entity1.property1=entity2.property2
*
* @param entityName1
* @param propertyName1
* @param entityName2
* @param propertyName2
* @return
*/
public static String andTwoEntityRelation(String entityName1,
String propertyName1, String entityName2, String propertyName2) {
return " And "
+ getEntityDotPropertyNameEqual(entityName1, propertyName1)
+ getEntityDotPropertyName(entityName2, propertyName2);
}
/**
* 获取形如 UserDetail.userName 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String getEntityDotPropertyName(String entityName,
String propertyName) {
return " " + entityName + "." + propertyName + " ";
}
/**
* 获取形如 UserDetail.userName= 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String getEntityDotPropertyNameEqual(String entityName,
String propertyName) {
return " " + entityName + "." + propertyName + "=";
}
/**
* 获取形如 UserDetail.userName!= 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String getEntityDotPropertyNameNotEqual(String entityName,
String propertyName) {
return " " + entityName + "." + propertyName + "!=";
}
/**
* 获取形如 UserDetail.userName, 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String getEntityDotPropertyNameComma(String entityName,
String propertyName) {
return " " + entityName + "." + propertyName + ", ";
}
/**
* 获取形如 UserDetail.userName= 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String whereEntityDotPropertyNameEqual(String entityName,
String propertyName) {
return " Where " + entityName + "." + propertyName + "=";
}
// /**
// * 获取形如 UserDetail.userName=? 这种类型的字符串
// *
// * @param entityName
// * @param propertyName
// * @return
// */
// public static String whereEntityDotPropertyNameEqualQuestionSign(
// String entityName, String propertyName) {
// return " Where" + entityName + "." + propertyName + "=?";
// }
/**
* 获取形如 UserDetail.userName='XX' 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String whereEntityDotPropertyNameEqualValue(
String entityName, String propertyName, String propertyValue) {
return " Where"
+ getEntityDotPropertyNameEqual(entityName, propertyName)
+ StringUtil.wrapSingleQuotes(propertyValue);
}
/**
* 在属性名后添加 In() 符号,比如属性名address的返回值会是address In ('XX','XX')
*
* @param propertyName
* @return
*/
public static String whereEntityDotPropertyNameInValue(String entityName,
String propertyName, Iterable<?> propertyValues) {
return " Where " + getEntityDotPropertyName(entityName, propertyName)
+ " In ('" + StringUtils.join(propertyValues, "','") + "')";
}
/**
* 返回形如 Where property Not In ('') 这种类型的语句
*
* @param propertyName
* @return
*/
public static String whereEntityDotPropertyNameNotInValue(
String entityName, String propertyName, Iterable<?> propertyValues) {
return " Where " + getEntityDotPropertyName(entityName, propertyName)
+ "Not In ('" + StringUtils.join(propertyValues, "','") + "')";
}
/**
* 获取形如 Select UserDetail.userName 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String selectEntityDotPropertyName(String entityName,
String propertyName) {
return "Select " + getEntityDotPropertyName(entityName, propertyName)
+ " ";
}
/**
* 获取形如 Select Distinct UserDetail.userName 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String selectDistinctEntityDotPropertyName(String entityName,
String propertyName) {
return "Select Distinct"
+ getEntityDotPropertyName(entityName, propertyName) + " ";
}
/**
* 获取形如 Select UserDetail.userName, 这种类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String selectEntityDotPropertyNameComma(String entityName,
String propertyName) {
return "Select "
+ getEntityDotPropertyNameComma(entityName, propertyName);
}
/**
* 关联两个实体，即返回形如 Where entity1.property1=entity2.property2
*
* @param entityName1
* @param propertyName1
* @param entityName2
* @param propertyName2
* @return
*/
public static String whereTwoEntityRelation(String entityName1,
String propertyName1, String entityName2, String propertyName2) {
return whereEntityDotPropertyNameEqual(entityName1, propertyName1)
+ getEntityDotPropertyName(entityName2, propertyName2);
}
/**
* 返回 Where 1=1 这样的恒等式
*
* @return
*/
public static String whereIdentity() {
return " Where 1=1 ";
}
/**
* 获取形如 Or entity.property=? 类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String orEntityDotPropertyNameEqualQuestionSign(
String entityName, String propertyName) {
return " Or " + getEntityDotPropertyNameEqual(entityName, propertyName)
+ "? ";
}
/**
* 获取形如 Order By entity.property 类型的字符串
*
* @param entityName
* @param orderByPropertyName
* @return
*/
public static String orderBy(String entityName, String orderByPropertyName) {
return " Order By "
+ getEntityDotPropertyName(entityName, orderByPropertyName);
}
public static String orderDESC() {
return " DESC ";
}
/**
* 获取形如 Group By entity.property 类型的字符串
*
* @param entityName
* @param propertyName
* @return
*/
public static String groupBy(String entityName, String propertyName) {
return " Group By "
+ getEntityDotPropertyName(entityName, propertyName);
}
/**
* 得到形如 Delete from xx where xxx in()的Sql语句
*
* @param entityName
* @param wherePropertyName
* @param wherePropertyValues
* @return
*/
public static StringBuffer deleteByPropertyIn(String entityName,
String wherePropertyName, Iterable<?> wherePropertyValues) {
StringBuffer JPQL = new StringBuffer();
if (StringUtils.isNotBlank(entityName)
&& StringUtils.isNotBlank(wherePropertyName)
&& wherePropertyValues != null) {
JPQL.append(deleteEntity(entityName));
JPQL.append(whereEntityDotPropertyNameInValue(entityName,
wherePropertyName, wherePropertyValues));
}
return JPQL;
}
/**
* 得到形如 Delete from xx where xxx =?的Sql语句
*
* @param entityName
* @param wherePropertyName
* @return
*/
public static StringBuffer deleteByProperty(String entityName,
String wherePropertyName) {
StringBuffer JPQL = new StringBuffer();
if (StringUtils.isNotBlank(entityName)
&& StringUtils.isNotBlank(wherePropertyName)) {
JPQL.append(deleteEntity(entityName));
JPQL.append(whereEntityDotPropertyNameEqualQuestionSign(entityName,
wherePropertyName));
}
return JPQL;
}
/**
* 得到形如 Delete from xx where id in()的Sql语句
*
* @param entityName
* @param wherePropertyValues
* @return
*/
public static StringBuffer deleteByIdIn(String entityName,
Iterable<?> wherePropertyValues) {
return deleteByPropertyIn(entityName, "id", wherePropertyValues);
}
}
1.2. EntityUtil，用户实现获取实体名、属性等功能的工具类
package com.shanlan.common.util;
import org.openkoala.koala.commons.domain.KoalaLegacyEntity;
import javax.persistence.Column;
import javax.persistence.Table;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Created by albertliu on 14-10-20.
*/
public class EntityUtil {
public static String getAllPropertyNameOfEntity(Class clazz) {
if (clazz.isAnnotationPresent(Table.class)) {
Table table = (Table) clazz.getAnnotation(Table.class);
String tableName = table.name();
Field[] fields = clazz.getDeclaredFields();
StringBuffer allColumnName = new StringBuffer();
for (Field field : fields) {
if (field.isAnnotationPresent(Column.class)) {
Column column = field.getAnnotation(Column.class);
String columnName = column.name();
allColumnName.append(tableName + "." + columnName + ",");
}
}
if (allColumnName.length() > 0) {
return allColumnName.toString().substring(0,
allColumnName.length() - 1);
}
}
return null;
}
public static String getEntityName(Class clazz) {
return clazz.getSimpleName();
}
/**
* 返回EntityName_A格式的实体名，比如实体是Goods，则返回Goods_A
* 主要用于自己关联自己的查询
*
* @param clazz
* @return
*/
public static String getEntityNameAppendA(Class clazz) {
return getEntityNameAppendA(getEntityName(clazz));
}
/**
* 返回EntityName_B格式的实体名，比如实体是Goods，则返回Goods_B
* 主要用于自己关联自己的查询
*
* @param clazz
* @return
*/
public static String getEntityNameAppendB(Class clazz) {
return getEntityNameAppendB(getEntityName(clazz));
}
/**
* 返回EntityName_A格式的实体名，比如实体是Goods，则返回Goods_A
* 主要用于自己关联自己的查询
*
* @param entityName
* @return
*/
public static String getEntityNameAppendA(String entityName) {
return entityName + "_A";
}
/**
* 返回EntityName_B格式的实体名，比如实体是Goods，则返回Goods_B
* 主要用于自己关联自己的查询
*
* @param entityName
* @return
*/
public static String getEntityNameAppendB(String entityName) {
return entityName + "_B";
}
/**
* 返回实体名及其Id，用于拼装JQPL语句，返回形式为entity.id，比如Goods.id.
*
* @param clazz
* @return
*/
public static String getEntityNameAndId(Class clazz) {
String entityName = clazz.getSimpleName();
return entityName + ".id";
}
public static String getEntityNameAndAlias(Class clazz) {
String entityName = clazz.getSimpleName();
return entityName + " As " + entityName;
}
public static String getEntityNameAndAlias(String entityName) {
return entityName + " As " + entityName;
}
public static <T extends KoalaLegacyEntity> List<Integer> getIds(List<T> entityList) {
List<Integer> ids = new ArrayList<Integer>();
if (entityList != null && entityList.size() > 0) {
for (T entity : entityList) {
ids.add((Integer) entity.getId());
}
}
return ids;
}
public static <T extends KoalaLegacyEntity> Map<Integer, T> getIdAndEntityMap(List<T> entityList) {
Map<Integer, T> idAndEntityMap = new HashMap<Integer, T>();
if (entityList != null && entityList.size() > 0) {
for (T entity : entityList) {
idAndEntityMap.put((Integer) entity.getId(), entity);
}
}
return idAndEntityMap;
}
/**
* 获取实体字段与值映射，不包括值为空的字段
*
* @param object
* @return
* @throws IllegalAccessException
*/
public static Map<String, Object> getNotNullPropertyNameAndValueMap(Object object) throws IllegalAccessException {
Map<String, Object> paramValueMap = new HashMap<String, Object>();
if (object != null) {
Field[] fields = object.getClass().getDeclaredFields();
for (Field field : fields) {
if (field.isAnnotationPresent(Column.class)) {
field.setAccessible(true);
String fieldName = field.getName();
Object fieldValue = field.get(object);
if (fieldValue != null) {
paramValueMap.put(fieldName, fieldValue);
}
}
}
}
return paramValueMap;
}
/**
* 获取实体字段与值映射，不包括空值并且不包括id字段
*
* @param object
* @return
* @throws IllegalAccessException
*/
public static Map<String, Object> getNotNullAndIdPropertyNameAndValueMap(Object object) throws IllegalAccessException {
Map<String, Object> paramValueMap = new HashMap<String, Object>();
if (object != null) {
Field[] fields = object.getClass().getDeclaredFields();
for (Field field : fields) {
if (field.isAnnotationPresent(Column.class)) {
field.setAccessible(true);
String fieldName = field.getName();
if ("id".equals(fieldName)) {
continue;
}
Object fieldValue = field.get(object);
if (fieldValue != null) {
paramValueMap.put(fieldName, fieldValue);
}
}
}
}
return paramValueMap;
}
/**
* 获取实体字段与值映射
*
* @param object
* @return
* @throws IllegalAccessException
*/
public static Map<String, Object> getPropertyNameAndValueMap(Object object) throws IllegalAccessException {
Map<String, Object> paramValueMap = new HashMap<String, Object>();
if (object != null) {
Field[] fields = object.getClass().getDeclaredFields();
for (Field field : fields) {
if (field.isAnnotationPresent(Column.class)) {
field.setAccessible(true);
String fieldName = field.getName();
Object fieldValue = field.get(object);
paramValueMap.put(fieldName, fieldValue);
}
}
}
return paramValueMap;
}
}
2.查询功能示例
2.1 列表查询
分为“对应的方法”和使用示例两个方面进行介绍
2.1.1 对应方法
/**
* 根据id列表列出实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param ids id列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> list(Class<T> clazz,
Collection<?> ids) {
List<T> entityList = new ArrayList<T>();
if (clazz != null && CollectionUtils.isNotEmpty(ids)) {
StringBuffer JPQL = JPQLUtil.selectByPropertyIn(clazz, "id", ids);
entityList = getRepository().createJpqlQuery(JPQL.toString())
.list();
}
return entityList;
}
/**
* 根据查询条件列出实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName 条件属性名
* @param wherePropertyValues 条件属性值列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> list(Class<T> clazz,
String wherePropertyName, Collection<?> wherePropertyValues) {
List<T> entityList = new ArrayList<T>();
if (clazz != null && CollectionUtils.isNotEmpty(wherePropertyValues)) {
StringBuffer JPQL = JPQLUtil.selectByPropertyIn(clazz,
wherePropertyName, wherePropertyValues);
entityList = getRepository().createJpqlQuery(JPQL.toString())
.list();
}
return entityList;
}
/**
* 根据查询条件列出实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName2 条件属性名
* @param wherePropertyValues2 条件属性值列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> list(Class<T> clazz,
String wherePropertyName1, Object wherePropertyValue1,
String wherePropertyName2, Collection<?> wherePropertyValues2) {
List<T> entityList = new ArrayList<T>();
String entityName = clazz.getSimpleName();
StringBuffer JPQL = JPQLUtil.selectEntity(entityName);
JPQL.append(JPQLUtil.fromEntity(entityName));
JPQL.append(JPQLUtil.whereIdentity());
List<Object> conditionValues = new ArrayList<Object>();
if (StringUtils.isNotBlank(wherePropertyName1)
&& wherePropertyValue1 != null) {
JPQL.append(JPQLUtil.andPropertyEqualQuestionSign(entityName,
wherePropertyName1));
conditionValues.add(wherePropertyValue1);
}
if (StringUtils.isNotBlank(wherePropertyName2)
&& CollectionUtils.isNotEmpty(wherePropertyValues2)) {
JPQL.append(JPQLUtil.andPropertyIn(entityName, wherePropertyName2,
wherePropertyValues2));
}
entityList = getRepository().createJpqlQuery(JPQL.toString())
.setParameters(conditionValues).list();
return entityList;
}
/**
* 根据查询条件列出自关联的实体,JQPL语句形如: Select entityB From entity As entityA,entity As
* entityB Where
* entityA.entityNameARePropertyName=entityB.entityNameBRePropertyName And
* entityA.entityAWherePropertyName1=entityAWherePropertyValue1 And
* entityA.entityAWherePropertyName2 In (entityAWherePropertyValues2)
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param entityNameARePropertyName 进行自关联的属性名
* @param entityNameBRePropertyName 进行自关联的属性名
* @param entityAWherePropertyName1 entityB条件属性名
* @param entityAWherePropertyValue1 entityB条件属性值列表
* @param entityAWherePropertyName2 entityB条件属性名
* @param entityAWherePropertyValues2 entityB条件属性值列表
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> listSelfRelation(Class<T> clazz,
String entityNameARePropertyName, String entityNameBRePropertyName,
String entityAWherePropertyName1,
Object entityAWherePropertyValue1,
String entityAWherePropertyName2,
Collection<?> entityAWherePropertyValues2) {
List<T> entityList = new ArrayList<T>();
String entityNameA = EntityUtil.getEntityNameAppendA(clazz);
String entityNameB = EntityUtil.getEntityNameAppendB(clazz);
StringBuffer JPQL = JPQLUtil.selectEntity(entityNameB);
JPQL.append(JPQLUtil.fromTowEntities(clazz));
JPQL.append(JPQLUtil.whereIdentity());
if (StringUtils.isNotBlank(entityNameARePropertyName)
&& StringUtils.isNotBlank(entityNameBRePropertyName)) {
JPQL.append(JPQLUtil.andTwoEntityRelation(entityNameA,
entityNameARePropertyName, entityNameB,
entityNameBRePropertyName));
}
List<Object> conditionValues = new ArrayList<Object>();
if (StringUtils.isNotBlank(entityAWherePropertyName1)
&& entityAWherePropertyValue1 != null) {
JPQL.append(JPQLUtil.andPropertyEqualQuestionSign(entityNameA,
entityAWherePropertyName1));
conditionValues.add(entityAWherePropertyValue1);
}
if (StringUtils.isNotBlank(entityAWherePropertyName2)
&& CollectionUtils.isNotEmpty(entityAWherePropertyValues2)) {
JPQL.append(JPQLUtil.andPropertyIn(entityNameA,
entityAWherePropertyName2, entityAWherePropertyValues2));
}
entityList = getRepository().createJpqlQuery(JPQL.toString())
.setParameters(conditionValues).list();
return entityList;
}
/**
* 根据查询条件列出自关联的实体,JQPL语句形如: Select entityB From entity As entityA,entity As
* entityB Where
* entityA.entityNameARePropertyName=entityB.entityNameBRePropertyName And
* entityA.entityAWherePropertyName1=entityAWherePropertyValue1
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param entityAWherePropertyName entityB条件属性名
* @param entityAWherePropertyValue entityB条件属性值列
* @return 符合条件的实体列表
*/
public static <T extends Entity> List<T> listSelfRelation(Class<T> clazz,
String entityNameARePropertyName, String entityNameBRePropertyName,
String entityAWherePropertyName, Object entityAWherePropertyValue) {
return listSelfRelation(clazz, entityNameARePropertyName,
entityNameBRePropertyName, entityAWherePropertyName,
entityAWherePropertyValue, null, null);
}
2.1.2 使用示例
public static List<PhotoType> listSonPhotoTypes(String fatherPhotoTypeName) {
List<PhotoType> photoTypes = new ArrayList<PhotoType>();
if (StringUtils.isNotBlank(fatherPhotoTypeName)) {
photoTypes = listSelfRelation(PhotoType.class, "id", "upid",
"name", fatherPhotoTypeName);
}
return photoTypes;
}
2.2 分页查询
2.2.1 对应方法
/**
* 分页查询实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName 条件属性名
* @param wherePropertyValue 条件属性值
* @param pageIndex 当前页
* @param pageSize 每页显示的数据量
* @param orderByPropertyName 进行排序的属性名，为null则不排序
* @param isDESC 是否按倒序排列，为null或false按升序排序
* @return 符合条件的实体列表
*/
public static <T extends Entity> Page<T> page(Class<T> clazz,
int pageIndex, int pageSize, String wherePropertyName,
Object wherePropertyValue, String orderByPropertyName,
Boolean isDESC) {
return page(clazz, wherePropertyName, wherePropertyValue, null, null,
pageIndex, pageSize, orderByPropertyName, isDESC);
}
/**
* 分页查询实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName 条件属性名
* @param wherePropertyValues 条件属性值列表
* @param pageIndex 当前页
* @param pageSize 每页显示的数据量
* @param orderByPropertyName 进行排序的属性名，为null则不排序
* @param isDESC 是否按倒序排列，为null或false按升序排序
* @return 符合条件的实体列表
*/
public static <T extends Entity> Page<T> page(Class<T> clazz,
String wherePropertyName, Collection<?> wherePropertyValues,
int pageIndex, int pageSize, String orderByPropertyName,
Boolean isDESC) {
Page<T> entityPage = new Page<T>(0, 0, pageSize, new ArrayList<T>());
String entityName = EntityUtil.getEntityName(clazz);
StringBuffer JPQL = JPQLUtil.selectByPropertyIn(entityName,
wherePropertyName, wherePropertyValues);
if (StringUtils.isNotBlank(JPQL)
&& CollectionUtils.isNotEmpty(wherePropertyValues)) {
if (StringUtils.isNotBlank(orderByPropertyName)) {
JPQL.append(JPQLUtil.orderBy(entityName, orderByPropertyName));
if (isDESC != null && isDESC) {
JPQL.append(JPQLUtil.orderDESC());
}
}
entityPage = getQueryChannelService()
.createJpqlQuery(JPQL.toString())
.setPage(pageIndex, pageSize).pagedList();
}
return entityPage;
}
/**
* 分页查询实体
*
* @param <T> 实体所属的类型
* @param clazz 实体所属的类
* @param wherePropertyName1 条件1属性名
* @param wherePropertyValue1 条件1属性值列表
* @param wherePropertyName2 条件2属性名
* @param wherePropertyValues2 条件2属性值列表
* @param pageIndex 当前页
* @param pageSize 每页显示的数据量
* @param orderByPropertyName 进行排序的属性名，为null则不排序
* @param isDESC 是否按倒序排列，为null或false按升序排序
* @return 符合条件的实体列表
*/
public static <T extends Entity> Page<T> page(Class<T> clazz,
String wherePropertyName1, Object wherePropertyValue1,
String wherePropertyName2, Collection<?> wherePropertyValues2,
int pageIndex, int pageSize, String orderByPropertyName,
Boolean isDESC) {
Page<T> entityPage = new Page<T>(0, 0, pageSize, new ArrayList<T>());
String entityName = EntityUtil.getEntityName(clazz);
StringBuffer JPQL = JPQLUtil.selectEntity(entityName);
JPQL.append(JPQLUtil.fromEntity(entityName));
JPQL.append(JPQLUtil.whereIdentity());
List<Object> conditionValues = new ArrayList<Object>();
if (StringUtils.isNotBlank(wherePropertyName1)
&& wherePropertyValue1 != null) {
JPQL.append(JPQLUtil.andPropertyEqualQuestionSign(entityName,
wherePropertyName1));
conditionValues.add(wherePropertyValue1);
}
if (StringUtils.isNotBlank(wherePropertyName2)
&& CollectionUtils.isNotEmpty(wherePropertyValues2)) {
JPQL.append(JPQLUtil.andPropertyIn(entityName, wherePropertyName2,
wherePropertyValues2));
}
if (StringUtils.isNotBlank(orderByPropertyName)) {
JPQL.append(JPQLUtil.orderBy(entityName, orderByPropertyName));
if (isDESC != null && isDESC) {
JPQL.append(JPQLUtil.orderDESC());
}
}
entityPage = getQueryChannelService().createJpqlQuery(JPQL.toString())
.setParameters(conditionValues).setPage(pageIndex, pageSize)
.pagedList();
return entityPage;
}
2.2.2 使用示例
@Override
@Transactional(propagation = Propagation.SUPPORTS, readOnly = true)
public Page<PhotoCollectionDTO> page(int pageIndex, int pageSize,
String type, String orderByPropertyName, Boolean isDESC)
throws Exception {
Page<PhotoCollectionDTO> photoCollectionDTOPage = new Page<PhotoCollectionDTO>(
0, 0, pageSize, new ArrayList<PhotoCollectionDTO>());
Page<PhotoCollection> photoCollectionPage = PhotoCollection.page(
PhotoCollection.class, pageIndex, pageSize, "type", type,
orderByPropertyName, isDESC);
List<PhotoCollection> photoCollections = photoCollectionPage.getData();
if (photoCollectionPage != null && photoCollections.size() > 0) {
List<String> photographerNameList = PhotoCollection
.getCreatorList(photoCollections);
Map<String, UserDetail> userNameAndUserDetailMap = UserDetail
.getUserNameAndSelfMap(photographerNameList);
List<PhotoCollectionDTO> photoCollectionDTOs = new ArrayList<PhotoCollectionDTO>();
for (PhotoCollection photoCollection : photoCollections) {
PhotoCollectionDTO photoCollectionDTO = new PhotoCollectionDTO();
BeanUtils.copyProperties(photoCollectionDTO, photoCollection);
UserDetail userDetail = userNameAndUserDetailMap
.get(photoCollection.getCreator());
if (userDetail != null) {
photoCollectionDTO.setPhotographerNickName(userDetail
.getNickName());
photoCollectionDTO.setPhotographerAvatarPath(userDetail
.getPhotoPath());
}
photoCollectionDTOs.add(photoCollectionDTO);
}
photoCollectionDTOPage = new Page<PhotoCollectionDTO>(
photoCollectionPage.getStart(),
photoCollectionPage.getResultCount(), pageSize,
photoCollectionDTOs);
}
return photoCollectionDTOPage;
}