Getting "java.lang.IllegalStateException: Cannot convert value of type" exception when setting up datasource in openejb - spring

Question

I'm using OpenEJB 4.0.0, Spring 3.1.0.RELEASE, and JUnit 4.8.1. I'm trying to use OpenEJB to setup a datasource, which I do like so …
final Properties props = loadMyProjectProps();
final String dsJndiName = props.getProperty("DATASOURCE_JNDI_PREFIX") + "MySqlDS";
System.out.println("ds jndi name:" + dsJndiName);
p.put(dsJndiName, "new://Resource?type=DataSource");
p.put(dsJndiName + ".JdbcDriver", "com.mysql.jdbc.Driver");
final String url = "jdbc:mysql://" + props.getProperty("DB_SERVER") + ":" + props.getProperty("DB_PORT") + "/" + props.getProperty("DB_NAME");
p.put(dsJndiName + ".JdbcUrl", url);
p.put(dsJndiName + ".Username", props.getProperty("DB_USER"));
p.put(dsJndiName + ".Password", props.getProperty("DB_PASSWORD"));
final InitialContext initialContext = new InitialContext(p);
but upon initializing my Spring text application, which sets up the session factory and datasource like so …
<bean id="myprojSessionFactory" lazy-init="true" scope="singleton"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="mappingResources">
<ref bean="_hibernate_config_list"/>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.connection.release_mode">auto</prop>
<prop key="hibernate.dialect">${HIBERNATE_DIALECT}</prop>
<prop key="hibernate.transaction.factory.class">${HIBERNATE_TRANSACTION_FACTORY}</prop>
<prop key="hibernate.current_session_context_class">jta</prop>
<prop key="hibernate.query.factory_class">org.hibernate.hql.classic.ClassicQueryTranslatorFactory</prop>
<prop key="hibernate.show.sql">true</prop>
<prop key="hibernate.transaction.flush_before_completion">true</prop>
<prop key="hibernate.transaction.auto_close_session">true</prop>
</props>
</property>
<property name="dataSource">
<ref bean="myproj.ds.${DS_PREFIX}${DB_DATASOURCE}"/>
</property>
</bean>
…
<bean id="myproj.ds.jndi-MySqlDS" class="org.springframework.jndi.JndiObjectFactoryBean" lazy-init="true">
<property name="jndiName"><value>${DATASOURCE_JNDI_PREFIX}MySqlDS</value></property>
</bean>
I'm getting the exception that follows. Any idea how I fix this annoying "Cannot convert value of type [org.apache.openejb.core.ivm.naming.IvmContext] to required type [javax.sql.DataSource] for property 'dataSource'" exception?
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myprojSessionFactory' defined in class path resource [myproj/spring/config/db/hibernate/Hibernate-config.xml]: Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'org.apache.openejb.core.ivm.naming.IvmContext' to required type 'javax.sql.DataSource' for property 'dataSource'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.apache.openejb.core.ivm.naming.IvmContext] to required type [javax.sql.DataSource] for property 'dataSource': no matching editors or conversion strategy found
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
... 113 more
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'org.apache.openejb.core.ivm.naming.IvmContext' to required type 'javax.sql.DataSource' for property 'dataSource'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.apache.openejb.core.ivm.naming.IvmContext] to required type [javax.sql.DataSource] for property 'dataSource': no matching editors or conversion strategy found
at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:485)
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:516)
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:510)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1406)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1365)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
... 119 more
Caused by: java.lang.IllegalStateException: Cannot convert value of type [org.apache.openejb.core.ivm.naming.IvmContext] to required type [javax.sql.DataSource] for property 'dataSource': no matching editors or conversion strategy found
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:241)
at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:470)
... 125 more

Answer 1

the datasource property is looking for a datasource and you've passed it a String (because you used value=). You need to pass it the reference to your bean instead: