Retrieve data from spring doesn't work after insert - mysql

Question

I have a problem when I insert data in my MySQL database with Spring Data Jpa Module.
The problem is the following:
When I startup my Springapplication I create the database and initialize the data with SpringdataJPA and I see the data inserted in the table. Afterwards i wanna insert some data related to inserted data and only 1 of the 3 records inserted before were found. When i restard the server and i dont recreate the data and search for it with the same method every single record is found. I search for 2 weeks for a solution but didnt find anything. I hope you can help me.
NEWS
I think only in words is hard to understand, so I insert the code behind. jpa.xml with all spring jpa configuration. The 2 entities and the initmethods. hopefully you can find my error.
jpa.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:property-placeholder location="classpath:properties/database/database.properties" />
<!-- Declare a datasource that has pooling capabilities-->
<!-- BoneCP configuration -->
<bean id="SoopDataSource" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close" >
<property name="driverClass" value="${database.driver}" />
<property name="jdbcUrl" value="${database.url}" />
<property name="username" value="${database.user}"/>
<property name="password" value="${database.password}"/>
<property name="idleConnectionTestPeriod" value="60"/>
<property name="idleMaxAge" value="240"/>
<property name="maxConnectionsPerPartition" value="30"/>
<property name="minConnectionsPerPartition" value="5"/>
<property name="partitionCount" value="2"/>
<property name="acquireIncrement" value="5"/>
<!-- <property name="statementsCacheSize" value="100"/> -->
<!-- <property name="releaseHelperThreads" value="2"/> -->
</bean>
<!-- Declare a JPA entityManagerFactory-->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" >
<property name="persistenceUnitName" value="SoopDbProvider" />
<property name="dataSource" ref="SoopDataSource"/>
<property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
<property name="jpaProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.temp.use_jdbc_metadata_defaults">false</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>com.soopproject.main.db</value>
</list>
</property>
</bean>
<!-- Db initialization bean -->
<bean id="databaseinit" class="com.soopproject.main.db.init.DatabaseInitialization" init-method="init"/>
<!-- Declare a transaction manager-->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
Entities:
BaseEntityWithPrimary
#MappedSuperclass
#Data
#EqualsAndHashCode(callSuper = false)
public class SoopBaseEntityWithPrimary implements
Serializable {
#Id
#GeneratedValue
private long id;
}
Language:
#Entity
#Data
#EqualsAndHashCode(callSuper = true)
public class Language extends BaseEntityWithPrimary {
#Column(nullable = false, unique = true)
private String shortname;
#Column(nullable = false)
private String longname;
#ManyToMany(cascade = CascadeType.ALL)
private List<TranslationsShort> languageTranslationsShorts;
}
InitMethods
#Autowired
private UserRepository userrep;
#Autowired
private LanguageRepository langrep;
#Autowired
private ErrorCodesRepository errorrep;
private void initLanguage() {
User systemuser = null;
try {
systemuser = userrep.findUserByUsername("system");
} catch (Exception ex) {
DatabaseException exception = new DatabaseReadException(ex);
exception.writeLog();
}
List<Language> languages = new LinkedList<>();
Language deutsch = new Language();
deutsch.setCreateUser(systemuser);
deutsch.setShortname("DE");
deutsch.setLongname("Deutsch");
Language english = new Language();
english.setCreateUser(systemuser);
english.setShortname("EN");
english.setLongname("English");
Language italiano = new Language();
italiano.setCreateUser(systemuser);
italiano.setShortname("IT");
italiano.setLongname("Italiano");
languages.add(deutsch);
languages.add(italiano);
languages.add(english);
for (Language lang : languages) {
Language l_help = null;
try {
l_help = langrep.findLanguageByShortname(lang.getShortname());
} catch (Exception ex) {
DatabaseException exception = new DatabaseReadException(ex);
exception.writeLog();
}
if (l_help == null)
try {
langrep.saveAndFlush(lang);
} catch (Exception e) {
DatabaseException exception = new DatabaseWriteException(e);
exception.writeLog();
}
}
}
private void initErrorCodes() {
User systemuser = null;
Language de = null;
Language it = null;
Language en = null;
try {
systemuser = userrep.findUserByUsername("system");
} catch (Exception ex) {
DatabaseException exception = new DatabaseReadException(ex);
exception.writeLog();
}
try {
de = langrep.findLanguageByShortname("DE");
} catch (Exception ex) {
DatabaseException exception = new DatabaseReadException(ex);
exception.writeLog();
}
try {
it = langrep.findLanguageByShortname("IT");
} catch (Exception ex) {
DatabaseException exception = new DatabaseReadException(ex);
exception.writeLog();
}
try {
en = langrep.findLanguageByShortname("EN");
} catch (Exception ex) {
DatabaseException exception = new DatabaseReadException(ex);
exception.writeLog();
}
The problem is that after startup the springapplication and set <prop key="hibernate.hbm2ddl.auto">create</prop> in the method initErrorCodes only the line with it = langrep.findLanguageByShortname("IT"); finds the data in database. The other 2 calls return null (de = langrep.findLanguageByShortname("DE"); and en = langrep.findLanguageByShortname("EN");). Then i stop the application and look to the database and all data is inserted in the table Language. When i restart the server with <prop key="hibernate.hbm2ddl.auto">none</prop> then all 3 method calls return the data???!?!?! I dont get it. So for sure it's not a problem of the method call. But I cant find the error.

Answer 1

What do you mean by 1 of 3 were found? Are you querying the data, or accessing a relationship?
It sounds like some sort of caching is occurring. Some JPA providers enable caching by default, check you cache settings, and ensure you are maintaining bidirectional relationships correctly.
https://en.wikibooks.org/wiki/Java_Persistence/Caching
https://en.wikibooks.org/wiki/Java_Persistence/Relationships#Object_corruption.2C_one_side_of_the_relationship_is_not_updated_after_updating_the_other_side