Also just to point out, there's a number of GWT libraries for passing persistent objects across the client/server barrier. I'm not sure how well they work or of any of the dragons involved, but they do exist (hibernate4gwt was one back in the day - I believe it's been deprecated and there are more robust ones available these days).
On Thu, Mar 12, 2009 at 2:48 PM, Sumit Chandel <[email protected]>wrote: > Hi Poonam, > Apart from making sure your Hibernate and applicationContext.xml > configurations are correct, I think another major cause for the stack trace > you're seeing is that you're mixing server-side Java code with client-side > GWT code. It's important to recall that GWT code gets converted into > equivalent JavaScript, therefore you can't directly use server-side Java > concepts in GWT code and expect them to work as they would in a Java > runtime. > > That said, there is a set of emulated JRE types supported in GWT. You can > check out the link below to the types that are supported in the emulated > JRE. > > Emulated JRE: > > http://code.google.com/docreader/#p=google-web-toolkit-doc-1-5&s=google-web-toolkit-doc-1-5&t=RefJreEmulation > > Vitali's suggestion of getting your server-side properly configured without > introducing GWT at first, and then creating the client-side using GWT and > integrating with the server-side using GWT RPC sounds like a sound approach > if you're just getting started. > > Hope that helps, > -Sumit Chandel > > > On Tue, Mar 10, 2009 at 12:26 AM, Vitali Lovich <[email protected]> wrote: > >> This is more a Hibernate than GWT issue. From your error log, it looks >> like it boils down to you not configuring it correctly. If you look at the >> newer Hibernate, there's no XML configuration. It's all done through >> annotations, which are a lot easier to understand. >> >> You may want to look into just getting hibernate running on its own in a >> standalone java application, and then just adding a GWT RPC glue layer >> around it if you are indeed planning on doing some kind of web-app stuff. >> >> >> On Tue, Mar 10, 2009 at 3:06 AM, poonam <[email protected]> wrote: >> >>> >>> Hi, >>> I have developed the application using the 3parts tutorial from the >>> site www.eggsylife.blogspot.com as suggested by you. >>> Actually for database I have used MySQL and for the connection with >>> database I have created the applicationContext.xml as follows : >>> >>> - applicationContext.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:aop="http://www.springframework.org/schema/aop"; >>> xmlns:tx="http://www.springframework.org/schema/tx"; >>> xsi:schemaLocation=" http://www.springframework.org/schema/beans >>> classpath:spring-beans-2.0.xsd<http://www.springframework.org/schema/beans%0Aclasspath:spring-beans-2.0.xsd> >>> http://www.springframework.org/schema/tx >>> classpath:spring-tx-2.0.xsd<http://www.springframework.org/schema/tx%0Aclasspath:spring-tx-2.0.xsd> >>> http://www.springframework.org/schema/aop >>> classpath:spring-aop-2.0.xsd<http://www.springframework.org/schema/aop%0Aclasspath:spring-aop-2.0.xsd> >>> "> >>> <bean id="dataSource" >>> class="org.apache.commons.dbcp.BasicDataSource"> >>> <property name="driverClassName"> >>> <value>com.mysql.jdbc.Driver</value> >>> </property> >>> <property name="url"> >>> <value>>jdbc:mysql://localhost/test</value> >>> </property> >>> >>> <property name="username"> >>> <value>root</value> >>> </property> >>> <property name="password"> >>> <value>root</value> >>> </property> >>> <property name="initialSize"> >>> <value>2</value> >>> </property> >>> <property name="maxActive"> >>> <value>5</value> >>> </property> >>> <property name="maxIdle"> >>> <value>2</value> >>> </property> >>> </bean> >>> <bean id="sessionFactory" >>> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> >>> <property name="dataSource"> >>> <ref bean="dataSource"/> >>> </property> >>> <property name="configLocation"> >>> <value>hibernate.cfg.xml</value> >>> </property> >>> <property name="configurationClass"> >>> <value>org.hibernate.cfg.AnnotationConfiguration</value> >>> </property> >>> <property name="hibernateProperties"> >>> <props> >>> <prop >>> key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop> >>> <prop key="show_sql">true</prop> >>> </props> >>> </property> >>> </bean> >>> <bean id="txManager" >>> class="org.springframework.orm.hibernate3.HibernateTransactionManager"> >>> <property name="sessionFactory" ref="sessionFactory" /> >>> </bean> >>> <!-- enable the configuration of transactional behavior based on >>> annotations --> >>> <tx:annotation-driven transaction-manager="txManager" proxy- >>> target-class="false" /> >>> >>> <bean id="pupilCollection" >>> class="com.company.server.domain.PupilCollectionImpl" >>> scope="prototype"> <property name="sessionFactory"><ref >>> bean="sessionFactory"/></property> </bean> >>> </beans> >>> >>> Also, in the lib folder I have included the jar that is, mysql- >>> connector-java-5.0.4-bin.jar in the 'lib' folder. >>> But now I am getting the errors as, >>> >>> 1. [WARN] SQL Error: 0, SQLState: null >>> >>> 2. [WARN] Cannot create JDBC driver of class 'com.mysql.jdbc.Driver' >>> for connect URL '>jdbc:mysql://localhost/test' >>> >>> 3. [WARN] Could not obtain connection metadata >>> org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver >>> of class 'com.mysql.jdbc.Driver' for connect URL '>jdbc:mysql:// >>> localhost/test' >>> at org.apache.commons.dbcp.BasicDataSource.createDataSource >>> (BasicDataSource.java:1150) >>> at org.apache.commons.dbcp.BasicDataSource.getConnection >>> (BasicDataSource.java:880) >>> at >>> >>> org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection >>> (LocalDataSourceConnectionProvider.java:82) >>> at org.hibernate.cfg.SettingsFactory.buildSettings >>> (SettingsFactory.java:84) >>> at >>> org.hibernate.cfg.Configuration.buildSettings(Configuration.java: >>> 2009) >>> at org.hibernate.cfg.Configuration.buildSessionFactory >>> (Configuration.java:1292) >>> at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory >>> (AnnotationConfiguration.java:915) >>> at >>> >>> org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory >>> (LocalSessionFactoryBean.java:814) >>> at >>> >>> org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory >>> (LocalSessionFactoryBean.java:732) >>> at >>> >>> org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet >>> (AbstractSessionFactoryBean.java:211) >>> Caused by: java.sql.SQLException: No suitable driver >>> at org.apache.commons.dbcp.BasicDataSource.createDataSource >>> (BasicDataSource.java:1143) >>> at org.apache.commons.dbcp.BasicDataSource.getConnection >>> (BasicDataSource.java:880) >>> at >>> >>> org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection >>> (LocalDataSourceConnectionProvider.java:82) >>> at org.hibernate.cfg.SettingsFactory.buildSettings >>> (SettingsFactory.java:84) >>> at >>> org.hibernate.cfg.Configuration.buildSettings(Configuration.java: >>> 2009) >>> at org.hibernate.cfg.Configuration.buildSessionFactory >>> (Configuration.java:1292) >>> at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory >>> (AnnotationConfiguration.java:915) >>> at >>> >>> org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory >>> (LocalSessionFactoryBean.java:814) >>> at >>> >>> org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory >>> (LocalSessionFactoryBean.java:732) >>> at >>> >>> org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet >>> (AbstractSessionFactoryBean.java:211) >>> >>> 4. [WARN] no persistent classes found for query class: >>> from com.company.server.persistent.Pupil as p where >>> p.teacher.teacherId = :teacherId order by p.name >>> >>> >>> Please help to solve these errors. >>> >>> Thanks, >>> Poonam. >>> >>> >>> >> >> >> > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
