I'm using a jhipster project with cassandra as its repository. Now i also want to integrate elasticsearch with the same project. But getting errors which seem to be that the cassandra is trying to read #Document as its annotation.
Caused by: org.springframework.data.cassandra.mapping.VerifierMappingExceptions: com.shoptell.backoffice.repository.dto.IndexedMergeProductInfoDTO:
Cassandra entities must have the #Table, #Persistent or #PrimaryKeyClass Annotation
at org.springframework.data.cassandra.mapping.BasicCassandraPersistentEntityMetadataVerifier.verify(BasicCassandraPersistentEntityMetadataVerifier.java:45)
at org.springframework.data.cassandra.mapping.BasicCassandraPersistentEntity.verify(BasicCassandraPersistentEntity.java:198)
at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:297)
at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:256)
at org.springframework.data.mapping.context.AbstractMappingContext.initialize(AbstractMappingContext.java:372)
at org.springframework.data.cassandra.mapping.BasicCassandraMappingContext.initialize(BasicCassandraMappingContext.java:79)
at org.springframework.data.mapping.context.AbstractMappingContext.afterPropertiesSet(AbstractMappingContext.java:362)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
... 144 more
IndexedMergeProductInfoDTO.java
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
#Document(indexName="mergeIndex",type="indexMergeProductInfo")
public class IndexedMergeProductInfoDTO {
#Id
private String id;
private String name;
private String metaCategory;
private String categoryName;
private String subCategoryName;
private String productBrand;
private String productSubBrand;
private String series;
private String model;
CassandraDataAutoConfiguration.java
import com.datastax.driver.core.Cluster;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.boot.autoconfigure.AutoConfigurationPackages;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.cassandra.config.CassandraEntityClassScanner;
import org.springframework.data.cassandra.config.CassandraSessionFactoryBean;
import org.springframework.data.cassandra.convert.CassandraConverter;
import org.springframework.data.cassandra.convert.MappingCassandraConverter;
import org.springframework.data.cassandra.core.CassandraAdminOperations;
import org.springframework.data.cassandra.core.CassandraAdminTemplate;
import org.springframework.data.cassandra.mapping.BasicCassandraMappingContext;
import org.springframework.data.cassandra.mapping.CassandraMappingContext;
import javax.inject.Inject;
/**
* {#link org.springframework.boot.autoconfigure.EnableAutoConfiguration Auto-configuration} for Spring Data's Cassandra support.
* <p/>
* Registers a {#link org.springframework.data.cassandra.config.CassandraSessionFactoryBean} a {#link org.springframework.data.cassandra.core.CassandraAdminOperations} a {#link org.springframework.data.cassandra.mapping.CassandraMappingContext} and a
* {#link org.springframework.data.cassandra.convert.CassandraConverter} beans if no other beans of the same type are configured.
* <p/>
*/
#Configuration
#ConditionalOnClass({Cluster.class, CassandraAdminOperations.class})
#EnableConfigurationProperties(CassandraProperties.class)
#AutoConfigureAfter(CassandraAutoConfiguration.class)
public class CassandraDataAutoConfiguration {
#Inject
BeanFactory beanFactory;
#Inject
private CassandraProperties properties;
#Inject
private Cluster cluster;
#Bean
#ConditionalOnMissingBean
public CassandraSessionFactoryBean session() throws Exception {
CassandraSessionFactoryBean session = new CassandraSessionFactoryBean();
session.setCluster(this.cluster);
session.setConverter(cassandraConverter());
session.setKeyspaceName(properties.getKeyspaceName());
return session;
}
#Bean
#ConditionalOnMissingBean
public CassandraAdminOperations cassandraTemplate() throws Exception {
return new CassandraAdminTemplate(session().getObject(), cassandraConverter());
}
#Bean
#ConditionalOnMissingBean
public CassandraMappingContext cassandraMapping() throws ClassNotFoundException {
BasicCassandraMappingContext bean = new BasicCassandraMappingContext();
bean.setInitialEntitySet(CassandraEntityClassScanner.scan(AutoConfigurationPackages.get(beanFactory)));
bean.setBeanClassLoader(beanFactory.getClass().getClassLoader());
return bean;
}
#Bean
#ConditionalOnMissingBean
public CassandraConverter cassandraConverter() throws Exception {
return new MappingCassandraConverter(cassandraMapping());
}
}
What are the things need to be done to get elasticsearch running?
JHipster can generate a Cassandra + Elasticsearch project -> from my understanding you didn't select that option when generating your project, but if you want to add Elasticsearch, just have a look at how we do it on a new project.
You could also re-generate your project, and add in your .yo-rc.json file:
"searchEngine": "elasticsearch"
Related
I have one micro-service named order-service in spring boot.
:: Spring Boot :: (v2.0.5.RELEASE)
in that micro-service, in service layer I have 2 service class 1. OrderManagerService and OrderService. From OrderService I call Repository Interface IOrderRequestRepository which extends PagingAndSortingRepository interface. so The call is basically OrderManagerService -> OrderService -> IOrderRequestRepository.
Right now I am using one data source for the micro-service. Now my requirement is I have to use 2 data source because in OrderManagerService there is one method getCustomerVisitsForMonth(Long customerID) which frequently used and we don't want to give load on prod DB server. Instead we will use prod-replica server for this one particular method.
I have googled a lot of blogs and tried to implement but ending up getting different exception.
below are exceptions:
could not execute query; SQL [SELECT * FROM ....(this is the actual query)]; nested exception is org.hibernate.exception.SQLGrammarException: could not execute query",
Could not open JPA EntityManager for transaction; nested exception is org.hibernate.TransactionException: JDBC begin transaction failed:
Below are my sample code:
application-env.properties
spring.datasource.url=jdbc:mysql://someurl:3306/orders?zeroDateTimeBehavior=convertToNull&useSSL=false
spring.datasource.username=<username>
spring.datasource.password=<password>
spring.datasource.driverClassName=com.mysql.jdbc.Driver
#replica datasource details
spring.replica.datasource.url=jdbc:mysql://someurl:3306/order?zeroDateTimeBehavior=convertToNull&useSSL=false
spring.replica.datasource.username=<username>
spring.replica.datasource.password=<password>
spring.replica.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.tomcat.initial-size=15
spring.datasource.tomcat.max-wait=20000
spring.datasource.tomcat.max-active=5
spring.datasource.tomcat.max-idle=4
spring.datasource.tomcat.min-idle=2
spring.datasource.tomcat.default-auto-commit=true
#replica data source details
spring.replica.datasource.tomcat.initial-size=15
spring.replica.datasource.tomcat.max-wait=20000
spring.replica.datasource.tomcat.max-active=5
spring.replica.datasource.tomcat.max-idle=4
spring.replica.datasource.tomcat.min-idle=2
spring.replica.datasource.tomcat.default-auto-commit=true
Main class
package in.demo.order.web.app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.transaction.annotation.EnableTransactionManagement;
#SpringBootApplication(scanBasePackages = "in.demo.order",
exclude = { SecurityAutoConfiguration.class })
public class OrderServiceApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(OrderServiceApplication.class, args);
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(OrderServiceApplication.class);
}
}
I have created 2 different packages for Repository classes and for Entity classes, however my Entity and Repository are same.
packages
in.demo.order.dao
in.demo.order.repodao
Configuration classes
MainDataSourceConfiguration
package in.demo.order.web.config;
import in.demo.order.replicadao.IOrderRequestRepositoryForReplica;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.*;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
basePackages = "in.demo.order.dao",
entityManagerFactoryRef = "mainEntityManagerFactory",
transactionManagerRef = "mainTransactionManager"
)
public class MainDataSourceConfiguration {
#Autowired
private Environment environment;
#Primary
#Bean(name = "mainDataSourceProperties")
#ConfigurationProperties("spring.datasource")
public DataSourceProperties mainDataSourceProperties() {
return new DataSourceProperties();
}
#Primary
#Bean(name = "mainDataSource")
#ConfigurationProperties("spring.datasource.configuration")
public DataSource mainDataSource(
#Qualifier("mainDataSourceProperties") DataSourceProperties mainDataSourceProperties) {
return mainDataSourceProperties
.initializeDataSourceBuilder()
.type(org.apache.tomcat.jdbc.pool.DataSource.class)
.build();
}
#Primary
#Bean(name = "mainEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean mainEntityManagerFactory(
EntityManagerFactoryBuilder mainEntityManagerFactoryBuilder,
#Qualifier("mainDataSource") DataSource mainDataSource) {
Map<String, String> mainJpaProperties = new HashMap<>();
mainJpaProperties.put("hibernate.dialect",
environment.getProperty("spring.jpa.properties.hibernate.dialect"));
mainJpaProperties.put("hibernate.hbm2ddl.auto",
environment.getProperty("spring.jpa.hibernate.ddl-auto"));
LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean = mainEntityManagerFactoryBuilder
.dataSource(mainDataSource)
.packages("in.demo.order.dao.model")
.persistenceUnit("mainDataSource")
.properties(mainJpaProperties)
.build();
localContainerEntityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
return localContainerEntityManagerFactoryBean;
}
#Primary
#Bean(name = "mainTransactionManager")
public PlatformTransactionManager mainTransactionManager(
#Qualifier("mainEntityManagerFactory") EntityManagerFactory mainEntityManagerFactory) {
return new JpaTransactionManager(mainEntityManagerFactory);
}
}
ReplicaDataSourceConfiguration
package in.demo.order.web.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(
basePackages = "in.demo.order.replicadao",
entityManagerFactoryRef = "replicaEntityManagerFactory",
transactionManagerRef = "replicaTransactionManager"
)
public class ReplicaDataSourceConfiguration {
#Autowired
private Environment environment;
#Bean(name = "replicaDataSourceProperties")
#ConfigurationProperties("spring.replica.datasource")
public DataSourceProperties replicaDataSourceProperties() {
return new DataSourceProperties();
}
#Bean(name = "replicaDataSource")
#ConfigurationProperties("spring.replica.datasource.configuration")
public DataSource replicaDataSource(
#Qualifier("replicaDataSourceProperties") DataSourceProperties replicaDataSourceProperties) {
return replicaDataSourceProperties
.initializeDataSourceBuilder()
.type(org.apache.tomcat.jdbc.pool.DataSource.class)
.build();
}
#Bean(name = "replicaEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean replicaEntityManagerFactory(
EntityManagerFactoryBuilder replicaEntityManagerFactoryBuilder,
#Qualifier("replicaDataSource") DataSource replicaDataSource) {
Map<String, String> replicaJpaProperties = new HashMap<>();
replicaJpaProperties.put("hibernate.dialect",
environment.getProperty("spring.jpa.properties.hibernate.dialect"));
replicaJpaProperties.put("hibernate.hbm2ddl.auto",
environment.getProperty("spring.jpa.hibernate.ddl-auto"));
LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean = replicaEntityManagerFactoryBuilder
.dataSource(replicaDataSource)
.packages("in.demo.order.replicadao.model")
.persistenceUnit("replicaDataSource")
.properties(replicaJpaProperties)
.build();
localContainerEntityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
return localContainerEntityManagerFactoryBean;
}
#Bean(name = "replicaTransactionManager")
public PlatformTransactionManager replicaTransactionManager(
#Qualifier("replicaEntityManagerFactory") EntityManagerFactory replicaEntityManagerFactory) {
return new JpaTransactionManager(replicaEntityManagerFactory);
}
}
OrderManagerService
package in.demo.order.service;
import javax.transaction.Transactional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
#Service
#Transactional
public class OrderManagerService{
#Autowired
private OrderService orderService;
public CustomerVisitsResponse getCustomerVisitsForMonthForReplicaDataSource(Long customerId) {
return orderService.getTotalCustomerVisitsForMonth(customerId);
}
public CustomerVisitsResponse getCustomerVisitsForMonthForMainDataSource(Long customerId) {
return orderService.getTotalCustomerVisitsForMonthForMainDataSource(customerId);
}
}
OrderService
package in.demo.order.service;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import in.demo.order.replicadao.IOrderRequestRepositoryForReplica;
import in.demo.order.dao.IOrderRequestRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
#Service
#Transactional(rollbackFor = Exception.class)
public class OrderService {
#Autowired
private IOrderRequestRepositoryForMain orderRequestRepositoryForMain;
#Autowired
private IOrderRequestRepositoryForReplica orderRequestRepositoryForReplica;
public CustomerVisitsResponse getTotalCustomerVisitsForMonthForReplicaDataSource(Long customerId) {
List<Integer> statusIdList= new ArrayList<>();
CustomerVisitsResponse response= new CustomerVisitsResponse();
statusIdList.add(OrderServiceConstants.SOME_CONSTANT_VALUE);
List<Integer> sellerIdList= new ArrayList<>();
sellerIdList.add(OrderServiceConstants.SOME_CONSTANT_VALUE);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM");
Date date = new Date();
String month= dateFormat.format(date)+"%";
try {
List<in.demo.order.replicadao.model.OrderEntity> orders =
orderRequestRepositoryForReplica.getOrderBycustomerIdAndBdMonth(customerId,statusIdList,month,sellerIdList);
if(orders!=null && !orders.isEmpty())
{
double total=0d;
for(in.demo.order.replicadao.model.OrderEntity order:orders)
{
total+=order.getPayableAmount();
}
response.setTotalSpent(total);
response.setTotalVisits((long)(orders.size()));
}
else {
response.setTotalSpent(0d);
response.setTotalVisits(0l);
}
} catch (Exception e) {
logger.info("Error occured while fetching getTotalCustomerVisitsForMonth customerid: " + customerId);
response.setTotalSpent(0d);
response.setTotalVisits(0l);
return response;
}
return response;
}
public CustomerVisitsResponse getTotalCustomerVisitsForMonthForMainDataSource(Long customerId) {
List<Integer> statusIdList= new ArrayList<>();
CustomerVisitsResponse response= new CustomerVisitsResponse();
statusIdList.add(OrderServiceConstants.SOME_CONSTANT_VALUE);
List<Integer> sellerIdList= new ArrayList<>();
sellerIdList.add(OrderServiceConstants.SOME_CONSTANT_VALUE);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM");
Date date = new Date();
String month= dateFormat.format(date)+"%";
try {
List<in.demo.order.dao.model.OrderEntity> orders =
orderRequestRepositoryForMain.getOrderBycustomerIdAndBdMonth(customerId,statusIdList,month,sellerIdList);
if(orders!=null && !orders.isEmpty())
{
double total=0d;
for(in.demo.order.dao.model.OrderEntity order:orders)
{
total+=order.getPayableAmount();
}
response.setTotalSpent(total);
response.setTotalVisits((long)(orders.size()));
}
else {
response.setTotalSpent(0d);
response.setTotalVisits(0l);
}
} catch (Exception e) {
logger.info("Error occured while fetching getTotalCustomerVisitsForMonth customerid: " + customerId);
response.setTotalSpent(0d);
response.setTotalVisits(0l);
return response;
}
return response;
}
}
Repository classes
package in.demo.order.replicadao;
IOrderRequestRepositoryForReplica
package in.demo.order.replicadao;
import in.demo.order.replicadao.model.OrderEntity;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.stereotype.Repository;
import java.util.List;
#Repository
public interface IOrderRequestRepositoryForReplica extends PagingAndSortingRepository<OrderEntity, Long> {
#Query(nativeQuery = true,
value = "SELECT * FROM orders ...<some query>")
public List<OrderEntity> getOrderBycustomerIdAndBdMonth(
Long customerId, List<Integer> statusIdList, String month, List<Integer> sellerIdList);
}
package in.demo.order.dao;
IOrderRequestRepositoryForMain
package in.demo.order.dao;
import java.util.List;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.stereotype.Repository;
import in.demo.order.dao.model.OrderEntity;
#Repository
public interface IOrderRequestRepositoryForMain extends PagingAndSortingRepository<OrderEntity, Long> {
#Query(nativeQuery = true,
value = "SELECT * FROM orders ...<some query>")
public List<OrderEntity> getOrderBycustomerIdAndBdMonth(Long customerId,
List<Integer> statusIdList, String month, List<Integer> sellerIdList);
}
Same Entity in different package with different serialVersionUID
packages are:
package in.demo.order.replicadao.model;
package in.demo.order.dao.model;
OrderEntity
package in.demo.order.replicadao.model;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name = "orders")
public class OrderEntity implements Serializable {
/**
*
*/
private static final long serialVersionUID = 4667868888563693990L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#Column(unique = true)
private String orderId;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getOrderId() {
return orderId;
}
public void setOrderId(String orderId) {
this.orderId = orderId;
}
}
Controller class
OrderController
package in.demo.order.controller;
import java.util.List;
import javax.sql.DataSource;
import in.demo.order.service.OrderManagerService;
#RestController
#RequestMapping("/api/order")
public class OrderController {
#Autowired
private OrderManagerService orderManagerService;
#Autowired
private DataSource mainDataSource;
#Autowired
#Qualifier("replicaDataSource")
private DataSource replicaDataSource;
#GetMapping("/replica")
public CustomerVisitsResponse getCustomerVisitResponseForReplica() {
Long customerId = 123L;
return orderManagerService.getCustomerVisitsForMonthForReplicaDataSource(customerId);
}
#GetMapping("/main")
public CustomerVisitsResponse getCustomerVisitResponseForMain() {
Long customerId = 123L;
return orderManagerService.getCustomerVisitsForMonthForMainDataSource(customerId);
}
#GetMapping("/maindatasource")
public String getMainDataSource() {
return mainDataSource.toString();
}
#GetMapping("/replicadatasource")
public String getReplicaDataSource() {
return replicaDataSource.toString();
}
}
I have checked manually in both Database for the query I am running. Data is present. But when I am running from postman to test
for replica, I am getting
Method threw 'org.springframework.dao.InvalidDataAccessResourceUsageException' exception. caused by org.hibernate.exception.SQLGrammarException: could not execute query
for main, I am getting
Transaction was marked for rollback only; cannot commit; nested exception is org.hibernate.TransactionException: Transaction was marked for rollback only; cannot commit
When I am using one datasource, the query is working fine.
The issue was with Entity class column name mapping issue, previously we were not mentioning #Column(name="column_name") , once I added the annotation, it started to work. But still I am confused how it is working fine when using single Data source
The yamlObjectMapper in configuration
#Bean
public ObjectMapper yamlObjectMapper() {
ObjectMapper yamlObjectMapper = new ObjectMapper(new YAMLFactory().disable(YAMLGenerator.Feature
.WRITE_DOC_START_MARKER));
yamlObjectMapper.findAndRegisterModules();
return yamlObjectMapper;
}
The Service to parse yaml file
#Service
public class CustomerService {
#Autowired
#Qualifier("yamlObjectMapper")
private ObjectMapper yamlObjectMapper;
public Customer get() {
try {
InputStream inputStream = ResourceUtils.getURL("classpath:/files/test.yaml").openStream();
return yamlObjectMapper.readValue(inputStream, Customer.class);
} catch (IOException ex) {
throw new IllegalStateException(ex);
}
}
#Data
public static class Customer {
private String name;
private String surname;
private String email;
}
}
I guess IO operations are blocking, how this can be done using reactive way?
I would rather use configuration binding since probably you need to read it once.
package com.vob.webflux.webfilter.controller;
import lombok.Getter;
import lombok.Setter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
#Component
#PropertySource(value = "classpath:config.yml", factory= YamlPropertySourceFactory.class)
#Getter
public class YamlFooProperties {
#Value("${test}")
private String test;
}
Factory
package com.vob.webflux.webfilter.controller;
import org.springframework.beans.factory.config.YamlPropertiesFactoryBean;
import org.springframework.core.env.PropertiesPropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.core.io.support.EncodedResource;
import org.springframework.core.io.support.PropertySourceFactory;
import java.io.IOException;
import java.util.Properties;
public class YamlPropertySourceFactory implements PropertySourceFactory {
#Override
public PropertySource<?> createPropertySource(String name, EncodedResource encodedResource)
throws IOException {
YamlPropertiesFactoryBean factory = new YamlPropertiesFactoryBean();
factory.setResources(encodedResource.getResource());
Properties properties = factory.getObject();
return new PropertiesPropertySource(encodedResource.getResource().getFilename(), properties);
}
}
Source factory from
We were using Spring Boot 2.1.6.RELEASE.
after that we updated spring version to 2.2.2.RELEASE. When we change the version we noticed our quartz jobs not working. We have multiple jobs and we configured them like below. After some reasearch i found some differences between in QuartzAutoConfiguration class.
How can i inject my triggers in spring 2.2.2.RELEASE. Is there any easy way? I dont want to write to many triggers and trigger details.
MyConfig
import io.rkpc.commons.util.ApplicationReflectionUtil;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.quartz.*;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.util.CollectionUtils;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
#Slf4j
#Configuration
#ConfigurationProperties(prefix = "quartz")
#Profile("quartz")
#Data
public class JobConfig {
private List<Job> jobs;
#Bean
public JobDetail[] jobDetail() throws SchedulerConfigException {
Set<Class<QuartzJobBean>> subClasses = ApplicationReflectionUtil.getSubClasses(QuartzJobBean.class, "io.rkpc");
List<JobDetail> jobDetails = new ArrayList<>();
for (Class<QuartzJobBean> quartzJobBeanClass : subClasses) {
Job job = getJob(quartzJobBeanClass.getSimpleName());
if (job.isEnabled()) {
JobDetail jobDetail = JobBuilder.newJob(quartzJobBeanClass)
.withIdentity(quartzJobBeanClass.getSimpleName())
.storeDurably()
.build();
jobDetails.add(jobDetail);
}
}
return jobDetails.toArray(new JobDetail[0]);
}
#Bean
public Trigger[] jobATrigger(JobDetail[] jobADetails) throws SchedulerConfigException {
List<Trigger> triggers = new ArrayList<>();
for (JobDetail jobDetail : jobADetails) {
Job job = getJob(jobDetail.getKey().getName());
CronTrigger trigger = TriggerBuilder.newTrigger().forJob(jobDetail)
.withIdentity(jobDetail.getKey().getName().concat("Trigger"))
.withSchedule(CronScheduleBuilder.cronSchedule(job.getCron()))
.build();
triggers.add(trigger);
}
return triggers.toArray(new Trigger[0]);
}
private Job getJob(String name) throws SchedulerConfigException {
List<Job> filteredJobs = jobs.stream().filter(job -> job.getName().equals(name)).collect(Collectors.toList());
if (CollectionUtils.isEmpty(filteredJobs) || filteredJobs.size() > 1) {
log.error("{} is not configured", name);
throw new SchedulerConfigException("Job is not configured");
}
return filteredJobs.get(0);
}
#Data
public static class Job {
private String name;
private String cron;
private boolean enabled;
}
}
QuartzAutoConfiguration.java Spring version 2.1.6 github url ; https://github.com/spring-projects/spring-boot/blob/v2.1.6.RELEASE/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/quartz/QuartzAutoConfiguration.java
QuartzAutoConfiguration.java Spring version 2.2.2 github url https://github.com/spring-projects/spring-boot/blob/v2.2.2.RELEASE/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/quartz/QuartzAutoConfiguration.java
Main difference i notice is ; in 2.1.6 version Quartz AutoConfiguration was "Trigger" array but 2.2.2 doesn't have "Trigger" array.
Spring has always some magic :)
import io.rkpc.commons.util.ApplicationReflectionUtil;
import lombok.Data;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.quartz.*;
import org.quartz.impl.JobDetailImpl;
import org.quartz.impl.triggers.CronTriggerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.quartz.QuartzAutoConfiguration;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.util.CollectionUtils;
import javax.annotation.PostConstruct;
import javax.validation.constraints.NotNull;
import java.text.ParseException;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
#Slf4j
#Configuration
#ConfigurationProperties(prefix = "quartz")
#Profile("quartz")
#Data
#AutoConfigureBefore({QuartzAutoConfiguration.class})
#RequiredArgsConstructor(onConstructor = #__({#Autowired, #NotNull}))
public class JobConfig {
private final List<Job> jobs;
private final DefaultListableBeanFactory beanFactory;
#PostConstruct
public void init() throws SchedulerConfigException, ParseException {
Set<Class<QuartzJobBean>> subClasses = ApplicationReflectionUtil.getSubClasses(QuartzJobBean.class, "io.rkpc");
for (Class<QuartzJobBean> quartzJobBeanClass : subClasses) {
Job job = getJob(quartzJobBeanClass.getSimpleName(), jobs);
if (job.isEnabled()) {
JobDetailImpl jobDetail = (JobDetailImpl) JobBuilder.newJob(quartzJobBeanClass)
.withIdentity(quartzJobBeanClass.getSimpleName())
.storeDurably()
.build();
CronTriggerImpl trigger = (CronTriggerImpl) TriggerBuilder.newTrigger().forJob(jobDetail)
.withIdentity(jobDetail.getKey().getName().concat("Trigger"))
.withSchedule(CronScheduleBuilder.cronSchedule(job.getCron()))
.build();
GenericBeanDefinition jobBeanDefinition = new GenericBeanDefinition();
jobBeanDefinition.setBeanClass(JobDetailImpl.class);
jobBeanDefinition.getPropertyValues().addPropertyValue("jobClass", quartzJobBeanClass);
jobBeanDefinition.getPropertyValues().addPropertyValue("key", jobDetail.getKey());
jobBeanDefinition.getPropertyValues().addPropertyValue("durability", jobDetail.isDurable());
beanFactory.registerBeanDefinition(quartzJobBeanClass.getSimpleName(), jobBeanDefinition);
GenericBeanDefinition triggerBeanDefinition = new GenericBeanDefinition();
triggerBeanDefinition.setBeanClass(CronTriggerImpl.class);
triggerBeanDefinition.getPropertyValues().addPropertyValue("jobKey", trigger.getJobKey());
triggerBeanDefinition.getPropertyValues().addPropertyValue("key", trigger.getKey());
triggerBeanDefinition.getPropertyValues().addPropertyValue("cronExpression", new CronExpression(trigger.getCronExpression()));
beanFactory.registerBeanDefinition(trigger.getName(), triggerBeanDefinition);
}
}
}
public Job getJob(String name, List<Job> jobs) throws SchedulerConfigException {
List<Job> filteredJobs = jobs.stream().filter(job -> job.getName().equals(name)).collect(Collectors.toList());
if (CollectionUtils.isEmpty(filteredJobs) || filteredJobs.size() > 1) {
log.error("{} is not configured", name);
throw new SchedulerConfigException("Job is not configured");
}
return filteredJobs.get(0);
}
#Data
public static class Job {
private String name;
private String cron;
private boolean enabled;
}
}
You are exposing a single Trigger[] bean rather than multiple Trigger beans. You should define one bean per Trigger. You should also do the same for each JobDetail. This was working by accident with Spring Boot 2.1.x as you were relying on the auto-configuration using ObjectProvider<Trigger[]>. The intent of the auto-configuration was to consume all Trigger beans, with the application context turning those beans into an array before injecting them.
If you don't want to define multiple Trigger and JobDetail beans, you may be better configuring the SchedulerFactoryBean yourself rather than relying on the auto-configuration.
I am working on a mysql master slave replication. I am using spring data jpa(spring boot).
What I needed is all write operations to go to master server and read-only operations to be equally distributed among multiple read-only slaves.
For that I need to:
Use special JDBC driver: com.mysql.jdbc.ReplicationDriver
Set replication: in the URL:
spring:
datasource:
driverClassName: com.mysql.jdbc.ReplicationDriver
url: jdbc:mysql:replication://127.0.0.1:3306,127.0.0.1:3307/MyForum?user=root&password=password&autoReconnect=true
test-on-borrow: true
validation-query: SELECT 1
database: MYSQL
Auto commit needs to be turned off. (*)
Connection needs to be set to read-only.
To ensure JDBC Connection is set to read-only, I created an annotation and a simple AOP interceptor.
Annotation
package com.xyz.forum.replication;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Created by Bhupati Patel on 02/11/15.
*/
#Retention(RetentionPolicy.RUNTIME)
#Target(ElementType.METHOD)
public #interface ReadOnlyConnection {
}
Interceptor
package com.xyz.forum.replication;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.hibernate.Session;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.persistence.EntityManager;
/**
* Created by Bhupati Patel on 02/11/15.
*/
#Aspect
#Component
public class ConnectionInterceptor {
private Logger logger;
public ConnectionInterceptor() {
logger = LoggerFactory.getLogger(getClass());
logger.info("ConnectionInterceptor Started");
}
#Autowired
private EntityManager entityManager;
#Pointcut("#annotation(com.xyz.forum.replication.ReadOnlyConnection)")
public void inReadOnlyConnection(){}
#Around("inReadOnlyConnection()")
public Object proceed(ProceedingJoinPoint pjp) throws Throwable {
Session session = entityManager.unwrap(Session.class);
ConnectionReadOnly readOnlyWork = new ConnectionReadOnly();
try{
session.doWork(readOnlyWork);
return pjp.proceed();
} finally {
readOnlyWork.switchBack();
}
}
}
Following is my spring data repository
package com.xyz.forum.repositories;
import com.xyz.forum.entity.Topic;
import org.springframework.data.repository.Repository;
import java.util.List;
/**
* Created by Bhupati Patel on 16/04/15.
*/
public interface TopicRepository extends Repository<Topic,Integer>{
Topic save(Topic topic);
Topic findByTopicIdAndIsDeletedFalse(Integer topicId);
List<Topic> findByIsDeletedOrderByTopicOrderAsc(Boolean isDelete);
}
Following is my Manager(Service) class.
package com.xyz.forum.manager;
import com.xyz.forum.domain.entry.impl.TopicEntry;
import com.xyz.forum.domain.exception.impl.AuthException;
import com.xyz.forum.domain.exception.impl.NotFoundException;
import com.xyz.forum.entity.Topic;
import com.xyz.forum.replication.ReadOnlyConnection;
import com.xyz.forum.repositories.TopicRepository;
import com.xyz.forum.utils.converter.TopicConverter;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import java.util.*;
/**
* Created by Bhupati Patel on 16/04/15.
*/
#Repository
public class TopicManager {
#Autowired
TopicRepository topicRepository;
#Transactional
public TopicEntry save(TopicEntry topicEntry) {
Topic topic = TopicConverter.fromEntryToEntity(topicEntry);
return TopicConverter.fromEntityToEntry(topicRepository.save(topic));
}
#ReadOnlyConnection
public TopicEntry get(Integer id) {
Topic topicFromDb = topicRepository.findByTopicIdAndIsDeletedFalse(id);
if(topicFromDb == null) {
throw new NotFoundException("Invalid Id", "Topic Id [" + id + "] doesn't exist ");
}
return TopicConverter.fromEntityToEntry(topicFromDb);
}
}
In the above code #ReadOnlyConnection annotation is specified in manager or service layer. Above pieces of code works fine for me. It is a trivial case where in the service layer I am only reading from slave db and writing into master db.
Having said that my actual requirement is I should be able to use #ReadOnlyConnection in repository level itself because I have quite a few business logic where I do both read/write operation in other classes of service layer.Therefore I can't put #ReadOnlyConnection in service layer.
I should be able to use something like this
public interface TopicRepository extends Repository<Topic,Integer>{
Topic save(Topic topic);
#ReadOnlyConnection
Topic findByTopicIdAndIsDeletedFalse(Integer topicId);
#ReadOnlyConnection
List<Topic> findByIsDeletedOrderByTopicOrderAsc(Boolean isDelete);
}
Like spring's #Transactional or #Modifying or #Query annotation. Following is an example of what I am referring.
public interface AnswerRepository extends Repository<Answer,Integer> {
#Transactional
Answer save(Answer answer);
#Transactional
#Modifying
#Query("update Answer ans set ans.isDeleted = 1, ans.deletedBy = :deletedBy, ans.deletedOn = :deletedOn " +
"where ans.questionId = :questionId and ans.isDeleted = 0")
void softDeleteBulkAnswers(#Param("deletedBy") String deletedBy, #Param("deletedOn") Date deletedOn,
#Param("questionId") Integer questionId);
}
I am novice to aspectj and aop world, I tried quite a few pointcut regex in the ConnectionInterceptor but none of them worked. I have been trying this since a long time but no luck yet.
How to achieve the asked task.
I couldn't get a workaround of having my custom annotation #ReadOnlyConnection(like #Transactional) at a method level,but a small heck did work for me.
I am pasting the code snippet below.
#Aspect
#Component
#EnableAspectJAutoProxy
public class ConnectionInterceptor {
private Logger logger;
private static final String JPA_PREFIX = "findBy";
private static final String CUSTOM_PREFIX = "read";
public ConnectionInterceptor() {
logger = LoggerFactory.getLogger(getClass());
logger.info("ConnectionInterceptor Started");
}
#Autowired
private EntityManager entityManager;
#Pointcut("this(org.springframework.data.repository.Repository)")
public void inRepositoryLayer() {}
#Around("inRepositoryLayer()")
public Object proceed(ProceedingJoinPoint pjp) throws Throwable {
String methodName = pjp.getSignature().getName();
if (StringUtils.startsWith(methodName, JPA_PREFIX) || StringUtils.startsWith(methodName, CUSTOM_PREFIX)) {
System.out.println("I'm there!" );
Session session = entityManager.unwrap(Session.class);
ConnectionReadOnly readOnlyWork = new ConnectionReadOnly();
try{
session.doWork(readOnlyWork);
return pjp.proceed();
} finally {
readOnlyWork.switchBack();
}
}
return pjp.proceed();
}
}
So in the above code I am using a pointcut like following
#Pointcut("this(org.springframework.data.repository.Repository)")
public void inRepositoryLayer() {}
and what it does is
any join point (method execution only in Spring AOP) where the proxy implements the Repository interface
You can have a look it at
http://docs.spring.io/spring/docs/current/spring-framework-reference/html/aop.html
Now all my repository read query methods either start with a prefix "findByXXX"(default spring-data-jpa readable method) or "readXXX"(custom read method with #Query annotation) which in my around method executions matched by the above pointcut. According to my requirement I am setting the JDBC Connection readOnly true.
Session session = entityManager.unwrap(Session.class);
ConnectionReadOnly readOnlyWork = new ConnectionReadOnly();
And my ConnectionReadOnly look like following
package com.xyz.forum.replication;
import org.hibernate.jdbc.Work;
import java.sql.Connection;
import java.sql.SQLException;
/**
* Created by Bhupati Patel on 04/11/15.
*/
public class ConnectionReadOnly implements Work {
private Connection connection;
private boolean autoCommit;
private boolean readOnly;
#Override
public void execute(Connection connection) throws SQLException {
this.connection = connection;
this.autoCommit = connection.getAutoCommit();
this.readOnly = connection.isReadOnly();
connection.setAutoCommit(false);
connection.setReadOnly(true);
}
//method to restore the connection state before intercepted
public void switchBack() throws SQLException{
connection.setAutoCommit(autoCommit);
connection.setReadOnly(readOnly);
}
}
So above settings work for my requirement.
it seems that #Pointcut && #Around should be declared in some way like follows:
#Pointcut(value = "execution(public * *(..))")
public void anyPublicMethod() {
}
#Around("#annotation(readOnlyConnection)")
By mean of Spring libraries I have to develope a DAL (Data Access Layer) in the form of a jar library which will be imported into the main application.
I want to use Hibernate to access a MySQL DB and DBCP for the management of the connections pool.
I have written the config file DALConfig.java which contains the configuration of the DAL beans:
package my.dal.config;
import java.util.Properties;
import javax.annotation.Resource;
import org.apache.commons.dbcp2.BasicDataSource;
import org.apache.commons.dbcp2.BasicDataSourceFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.orm.hibernate4.HibernateTransactionManager;
// Needed by Spring to add this class to the ApplicationContext's configuration
#Configuration
#ComponentScan(basePackages = { "my.dal.config" })
// Property file in which are written the MySQL connection properties
#PropertySource("classpath:dbconnection.properties")
public class DALConfig {
private static final String PROPERTY_NAME_DATABASE_DRIVER = "db.driver";
private static final String PROPERTY_NAME_DATABASE_PASSWORD = "db.password";
private static final String PROPERTY_NAME_DATABASE_URL = "db.url";
private static final String PROPERTY_NAME_DATABASE_USERNAME = "db.username";
private static final String PROPERTY_NAME_POOL_INITIAL_SIZE = "pool.initialsize";
private static final String PROPERTY_NAME_POOL_MAX_IDLE = "pool.maxidle";
// Needed to access property file
#Resource
private Environment environment;
// The bean which defines the BasicDataSource (DBCP)
#Bean
public BasicDataSource dataSource() throws Exception
{
Properties props = new Properties();
props.put("driverClassName", environment.getProperty(PROPERTY_NAME_DATABASE_DRIVER));
props.put("url", environment.getProperty(PROPERTY_NAME_DATABASE_URL));
props.put("username", environment.getProperty(PROPERTY_NAME_DATABASE_USERNAME));
props.put("password", environment.getProperty(PROPERTY_NAME_DATABASE_PASSWORD));
props.put("initialSize", environment.getProperty(PROPERTY_NAME_POOL_INITIAL_SIZE));
props.put("maxIdle", environment.getProperty(PROPERTY_NAME_POOL_MAX_IDLE));
BasicDataSource bds = BasicDataSourceFactory.createDataSource(props);
return bds;
}
// Bean used to translate Hibernate's exceptions into Spring's ones
#Bean
public PersistenceExceptionTranslationPostProcessor persistenceExceptionTranslationPostProcessor()
{
PersistenceExceptionTranslationPostProcessor b = new PersistenceExceptionTranslationPostProcessor();
return b;
}
}
Then I wrote the HibernateConfig.java config file which contains the Hibernate configuration stuff
package my.dal.hibernateconfig;
import java.util.Properties;
import javax.annotation.Resource;
import javax.sql.DataSource;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.orm.hibernate4.HibernateTransactionManager;
import org.springframework.orm.hibernate4.LocalSessionFactoryBean;
#Configuration
#ComponentScan(basePackages = { "my.dal.hibernatesessionfactory" })
#PropertySource("classpath:dbconnection.properties")
public class HibernateConfig {
private static final String PROPERTY_NAME_DAL_CLASSES_PACKAGE = "hibernate.dal.package";
private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect";
#Resource
private Environment environment;
#Autowired
DataSource dataSource;
// Bean which defines the FactoryBean for the SessionBean
#Bean
public LocalSessionFactoryBean sessionFactory()
{
LocalSessionFactoryBean lsfb = new LocalSessionFactoryBean();
lsfb.setPackagesToScan(PROPERTY_NAME_DAL_CLASSES_PACKAGE);
Properties hibernateProperties = new Properties();
hibernateProperties.put("dialect", PROPERTY_NAME_HIBERNATE_DIALECT);
lsfb.setHibernateProperties(hibernateProperties);
lsfb.setDataSource(dataSource);
return lsfb;
}
#Bean
public HibernateTransactionManager transactionManager()
{
// THE EXCEPTION IS THROWN AT THIS LINE
HibernateTransactionManager htm = new HibernateTransactionManager((SessionFactory) sessionFactory());
return htm;
}
}
Next I wrote the UserDAO.java class which is a DAO for the User class which models the DB's User table.
package my.dal.dao;
import my.models.User;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
#Component
#Repository
#Transactional
public class UserDAO
{
private SessionFactory sessionFactory;
#Autowired
public UserDAO(SessionFactory sessionFactory) {
this.sessionFactory=sessionFactory;
}
public int insert(User user) {
return (Integer) sessionFactory.getCurrentSession().save(user);
}
public User getByUsername(String username) {
return (User) sessionFactory.getCurrentSession().get(User.class, username);
}
public void update(User user) {
sessionFactory.getCurrentSession().merge(user); // .update(user);
}
public void delete(String username) {
User u = getByUsername(username);
sessionFactory.getCurrentSession().delete(u);
}
}
The mapping class User.java (generated using the Eclipse's Hibernate tools) is
package my.models;
public class User implements java.io.Serializable {
private String username;
private String idUserKeystone;
private String firstName;
private String lastName;
private String password;
private String email;
private String emailRef;
private String employer;
private boolean confirmed;
// Getters, setters and full constructor
}
Now I want to test the DAL. The testing class is DALTest.java
package my.dal.tests;
import static org.junit.Assert.assertTrue;
import my.dal.config.DALConfig;
import my.dal.dao.UserDAO;
import my.dal.hibernateconfig.HibernateConfig;
import my.models.User;
import org.hibernate.SessionFactory;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
#ContextConfiguration(classes = { DALConfig.class, HibernateConfig.class})
#RunWith(SpringJUnit4ClassRunner.class)
public class DALTest {
#Autowired
UserDAO userDAO;
#Test
public void testGetUser() {
User user = null;
// Let's see if the user "myuser" is into the database
user = userDAO.getByUsername("myuser");
assertTrue(null != user);
}
}
When I run the test it throws the following exceptions
java.lang.IllegalStateException: Failed to load ApplicationContext
...
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in class my.dal.hibernateconfig.HibernateConfig: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.orm.hibernate4.HibernateTransactionManager my.dal.hibernateconfig.HibernateConfig.transactionManager()] threw exception; nested exception is java.lang.ClassCastException: org.springframework.orm.hibernate4.LocalSessionFactoryBean$$EnhancerBySpringCGLIB$$d866ed45 cannot be cast to org.hibernate.SessionFactory
...
Caused by: java.lang.ClassCastException: org.springframework.orm.hibernate4.LocalSessionFactoryBean$$EnhancerBySpringCGLIB$$d866ed45 cannot be cast to org.hibernate.SessionFactory
at my.dal.hibernateconfig.HibernateConfig.transactionManager(HibernateConfig.java:55)
at my.dal.hibernateconfig.HibernateConfig$$EnhancerBySpringCGLIB$$bd53a036.CGLIB$transactionManager$1(<generated>)
at my.dal.hibernateconfig.HibernateConfig$$EnhancerBySpringCGLIB$$bd53a036$$FastClassBySpringCGLIB$$119f2c5b.invoke(<generated>)
...
It seems like the problem is the cast at the line
HibernateTransactionManager htm = new HibernateTransactionManager((SessionFactory) sessionFactory())
On the contrary, the Internet is full of example writing that line that way.
What could be the problem?
Thank you in advance
A FactoryBean<Foo> is a bean that creates objects of type Foo. It's not, itself, of type Foo (as the javadoc would show you). To get the Foo it creates, you simply call getObject() on the factory bean:
HibernateTransactionManager htm =
new HibernateTransactionManager(sessionFactory().getObject());