<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="hibernate.ogm.datastore.provider">mongodb</property>
<property name="hibernate.ogm.datastore.host">127.0.0.1</property>
<property name="hibernate.ogm.datastore.port">27017</property>
<property name="hibernate.ogm.datastore.database">eatery</property>
<property name="hibernate.ogm.datastore.create_database">true</property>
<mapping class="com.ws.web.models.Reservation" />
</session-factory>
</hibernate-configuration>
Does anyone know hoe to configure hibernate for mongodb. Docs says that there is no need of dialect. but i got errors
Exception in thread "main" org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:104)
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:71)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:209)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1887)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1845)
at com.ws.web.models.Test.main(Test.java:17)
First of all i think your configuration is wrong. The proporties that you used should be placed in persistence.xml file. The example is here.
The necessary properties with description are here
Related
I am new to hibernate, and I have been tasked with changing the ConnectionProvider from the hibernate default CP to either Hikari (preferred) or C3P0 in a legacy Java application that does not use maven as a repository. The database is PostgreSQL. The hibernate version is hibernate-release-5.2.10.Final. I have added hibernate-hikaricp-5.2.10.Final.jar to the classpath.
I have a pre-existing xml configuration file for hibernate. This has been working for several years, but the project wants to change to a "production ready connection pool". I have added/modified properties for the connection provider as follows:
<property name="hibernate.connection.provider_class">org.hibernate.hikaricp.internal.HikariCPConnectionProvider</property>
<property name="hibernate.hikari.minimumIdle">5</property>
<property name="hibernate.hikari.maximumPoolSize">20</property>
<property name="hibernate.hikari.idleTimeout">30000</property>
I am getting the following StrategySelectionException (long stack trace reduced to exceptions/causes ... more information available if necessary).
Exception in thread "DatabaseCache initialize thread" org.hibernate.service.spi.ServiceException: Unable to
create requested service [org.hibernate.engine.jdbc.connections.spi.ConnectionProvider]
...
Caused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.hikaricp.internal.HikariCPConnectionProvider] as strategy [org.hibernate.engine.jdbc.connections.spi.ConnectionProvider]
I made one other change, after first seeing the exception. I added the following property, but it made no difference.
<property name="hibernate.implicit_naming_strategy">default</property>
The full configuration, with some information provided as variables replaced during build, is:
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.implicit_naming_strategy">default</property>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.provider_class">org.hibernate.hikaricp.internal.HikariCPConnectionProvider</property>
<property name="hibernate.hikari.minimumIdle">5</property>
<property name="hibernate.hikari.maximumPoolSize">20</property>
<property name="hibernate.hikari.idleTimeout">30000</property>
<property name="hibernate.connection.username">${db_user_name}</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.connection.url">${db_connection_url}</property>
<property name="hibernate.hbm2ddl.auto">none</property>
<property name="hibernate.connection.autocommit">false</property>
<property name="hibernate.bytecode.use_reflection_optimizer">false</property>
<property name="hibernate.jdbc.time_zone">GMT</property>
<property name="hibernate.generate_statistics">false</property> <!-- This affects performance, use only in development -->
<property name="show_sql">false</property>
</session-factory>
</hibernate-configuration>
Any strategies :D to address this would be welcome. Thanks.
One way I know to configure DB in JBOSS FUSE is to use blueprint.xml.
Below configuration in blueprint.xml works
<bean id="gemsDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="${gems_url}" />
<property name="username" value="${gems_username}" />
<property name="password" value="${gems_password}" />
<property name="maxIdle" value="5" />
<property name="minIdle" value="1" />
<property name="initialSize" value="1" />
</bean>
However, Is there any way to configure it in JBOSS container specific configuration file. For example - In JBOSS EAP we can configure it in standalone.xml. On similar lines can we configure it in JBOSS FUSE?
Jboss Fuse provides the integration with various data sources. You need to configure them bundle wise like you have used. But no such configuration is there on container level.
You can define a Datasource in a bundle and export it. In other bundles you import and use it like a service.
Prerequisites
Install these features
features:install jdbc
features:install jndi
Datasource bundle
Drop an XML file inside deploy folder with following content:
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">
<bean id="dataSource" class="org.postgresql.jdbc3.Jdbc3SimpleDataSource">
<property name="url" value="jdbc:postgresql://localhost:5432/databasename"/>
<property name="user" value="username"/>
<property name="password" value="xxx"/>
</bean>
<service interface="javax.sql.DataSource" ref="dataSource">
<service-properties>
<entry key="osgi.jndi.service.name" value="jdbc/yourdatabasename_ds"/>
</service-properties>
</service>
</blueprint>
This will export a service with javax.sql.DataSource interface and a JNDI name
Use Datasource service
When a bundle needs the datasource, ask OSGi to inject it.
<blueprint>
<reference id="yourDatabaseDs"
interface="javax.sql.DataSource"
availability="mandatory"
filter="(osgi.jndi.service.name=jdbc/yourdatabasename_ds)"/>
</blueprint>
The right Datasource is retrieved using the JNDI name you provided.
Using availability="mandatory" you can force your bundle to wait for the Datasource to become available. The bundle won't start without this reference.
You need the correct JDBC drivers for the database you are using.
Other goodies
You have a lot of commands in JBoss Fuse console to interact with the database now, like jdbc:datasources that will list all available datasources. With jdbc:query you can run any SQL against your DB (good for debugging issues and testing the connection)
I am having some problems trying to configure Hibernate in my Java Project. I was looking around the forum, but I could not find any solution. I am new to Hibernate, Could you please help me? Thanks in advance.
Here is my hibernate.cfg.xml file content:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="ConexionHibernate">
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">hr</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:1521/xe</property>
<property name="hibernate.connection.username">hr</property>
<property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>
</session-factory>
</hibernate-configuration>
This is how my DataBase Connection looks like in Oracle SQL Developer
This is the error itself when i try configure the tables.
In your config jdbc driver is set for mysql and also the connection url is not correct, for oracle it's:
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:#localhost:1521:xe</property>
I have a dynamic web project that creates and writes Derby database. Everything works fine. Here is the persistence.xml I used:
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="alerts" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>test.Alert</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver" />
<property name="javax.persistence.jdbc.url" value="jdbc:derby:databases/bDb;create=true" />
<property name="javax.persistence.jdbc.user" value="user" />
<property name="javax.persistence.jdbc.password" value="user-pwd" />
<!-- EclipseLink should create the database schema automatically -->
<property name="eclipselink.ddl-generation" value="create-tables" />
<property name="eclipselink.ddl-generation.output-mode"
value="database" />
<property name="eclipselink.logging.level" value="FINEST" />
<property name="eclipselink.logging.level.sql" value="FINEST" />
</properties>
</persistence-unit>
Now I would like to create a java project that reads the same database. So I use the same persistence.xml (except that I change "create=true" to "create=false" since I don't want to create a new table). but I got this error:
[EL Severe]: ejb: 2014-12-28 22:27:20.379--ServerSession(1488953836)--Thread(Thread[DefaultQuartzScheduler_Worker-7,5,main])--Local Exception Stack:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Database 'databases/bDb' not found.
Error Code: 40000
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:331)
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:326)
at org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:138)
at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)
at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.setOrDetectDatasource(DatabaseSessionImpl.java:204)
at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:741)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:239)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:685)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:204)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:304)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:336)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:302)
If I use "create=true", it will create a new database instance (it is different from the one I created from the web project). How do I fix this problem? Thanks a lot!
Since you're using a relative filename in your jdbc.url (databases/bDb), Derby is looking for the database relative to your application start directory.
And your two separate applications have two separate directories in which they are being run.
You could address this in a number of ways:
Arrange for each application to be run from the same directory
Use an absolute database path name, not a relative one, in your jdb.url value
Use the Derby Network Server configuration, not the Derby Embedded configuration
And there are undoubtedly other approaches.
I can't get my DataSource working with JNDI and Tomcat 6, while running it from Eclipse. I've added a context.xml to my /META-INF with the following content:
<Context>
<Resource name="jdbc/myDB" auth="Container" type="javax.sql.DataSource"
username="root"
password="root"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost/database"
maxActive="15"
maxIdle="7"
validationQuery="Select 1" />
</Context>
And configured my Spring Bean as follows:
<bean id="UserDatabase" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="jdbc/myDB"></property>
<property name="lookupOnStartup" value="true"></property>
<property name="cache" value="true"></property>
<property name="proxyInterface" value="javax.sql.DataSource"></property>
</bean>
I've also added this lines to my web.xml:
<resource-ref>
<description>Connection Pool</description>
<res-ref-name>jdbc/myDB</res-ref-name>
<res-type>javax.sql.Datasource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
But for some reason I still get this error:
javax.naming.NameNotFoundException: The name jdbc is not associated to this context
at org.apache.naming.NamingContext.lookup(NamingContext.java:770)
at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:152)
I can't understand why this is not working... Any idea?
I changed the following and now it works:
In my context.xml completed the Context tag with:
<Context docBase="myApp" path="/myApp" reloadable="true" source="org.eclipse.jst.jee.server:app">
And in the Connection URL the character & caused the Cannot create resource error, don't know why, so my URL now is like:
jdbc:mysql://localhost/database?useUnicode=true&characterEncoding=utf-8
Please note the & int the URL...
If I remember correctly you should access it as
<property name="jndiName" value="java:comp/env/jdbc/myDB"/>
In the Spring appcontext, replace your definition with:
<bean id="dataSource"
class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName"
value="java:comp/env/jdbc/myDB"/>
<property name="resourceRef"
value="true" />
</bean>