Protected method: doGetTransaction()Ljava/lang/Object

[brpt2011]

Hi All,

I'm working on an app using Wicket, Spring and iBatis. I'm new to Wicket and Spring, but have used iBatis about 5 years ago when I did more Java programming that I do now.

I'm trying to implement Springs programmatic transaction management. From what I can tell, I think I have set everything up correctly, but am receiving an Exception "Protected method: doGetTransaction()Ljava/lang/Object" when calling the following code.

TransactionStatus status = txMgr.getTransaction(def);

I don't see what I'm doing wrong, but it must be something. Any help would be greatly appreciated!

My entire setup is as follows:

applicationConext.xml

<bean id="dataSource"
        class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
        <property name="driverClassName">
        	<value>${jdbc.driver}</value>
        </property>      
		<property name="url">
			<value>${jdbc.url}</value>
		</property>
        <property name="username">
        	<value>${jdbc.username}</value>
        </property> 
        <property name="password">
        	<value>${jdbc.password}</value>
        </property>
        <property name="maxActive" value="10"/>
        <property name="maxIdle" value="10"/> 
    </bean>
    <bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
			<property name="dataSource" ref="dataSource"/>
	</bean>

<bean id="sqlMap"
          class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
        	<property name="configLocation">
            <value>classpath:SqlMapConfig.xml</value>
        </property>
        <property name="dataSource" ref="dataSource" />
    </bean>    

    <bean id="disService"
        class="com.brapp.ibatis.delegates.DisDelegate">
        <property name="sqlMapClient" ref="sqlMap" />
    </bean>

BRApplication.java

public class BRApplication extends WebApplication implements ApplicationContextAware{
	
	private ApplicationContext ctx;
	private DataSourceTransactionManager transMgr;
	
	private static ISpringContextLocator CTX_LOCATOR = new ISpringContextLocator() {
		public ApplicationContext getSpringContext(){
			return BRApplication.get().ctx;
		}
	};

	@Override
	protected void init(){
		addComponentInstantiationListener(new SpringComponentInjector(
		        this));
		super.init();
	}
	
	private <T> T createProxy(Class<T> clazz){
		
		return (T) LazyInitProxyFactory.createProxy(clazz, new SpringBeanLocator(clazz,CTX_LOCATOR));
	}

	public Class<HomePage> getHomePage()
	{
		return HomePage.class;
	}	
	
	public static BRApplication get() {
	    return (BRApplication) Application.get();
	  }
	
	public DataSourceTransactionManager getTransactionManager(){
		if(transMgr == null){
			transMgr = createProxy(DataSourceTransactionManager.class);
		}
		return transMgr;
	}

	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {
		this.ctx = applicationContext;		
	}

	
}

Homepage.java

public class HomePage extends WebPage {

	private static final long serialVersionUID = 1L;
	
	@SpringBean (name = "disService")
	private DisDelegate dDelegate;

    public HomePage(final PageParameters parameters){
    	try{
	       Dis newD = new Dis();
	       newD.setDistrictName("MyDis");
	       newD.setDistrictInitials("MyD");
	       Integer myNewDstId = dDelegate.insertDis(newD);
               add(new Label("myNewDis","My New District Id is " + myNewDstId.toString()));
	    }catch(Exception e){
	    		info(e.getMessage());
	    	}
    	}
    }
}

DisDelegate.java

public class DisDelegate implements IDisService {
	
	private PlatformTransactionManager txMgr;

public int insertDis(Dis d) throws Exception {
		txMgr = (PlatformTransactionManager) BRApplication.get().getTransactionManager();
		DefaultTransactionDefinition def = new DefaultTransactionDefinition();
		def.setName("insDis");
def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
		TransactionStatus status = txMgr.getTransaction(def); //throws exception here
		try{
			int dstId = (Integer) sqlMap.insert("dis.insertDis", d);
			return dstId;		
		}catch(Exception e){
			txMgr.rollback(status);
			throw e;
		}
	}
}

[dr_pompeii]

Hi

From what I can tell, I think I have set everything up correctly, but am receiving an 
Exception "Protected method: doGetTransaction()Ljava/lang/Object" when calling the following code.

Copy here the complete error stack trace, some times has nested errors messages with more information

[brpt2011]

I've fixed the issue. I used a SpringBean Annotation in DisDelegate to create the PlatformTransactionManager

public class DisDelegate implements IBRService {
	
	@SpringBean (name = "transactionManager")
	private PlatformTransactionManager txMgr;

Then in my insertDis function I added the following:

public int insertDis(Dis d) throws Exception {
		// Injects the spring bean(s)
		  InjectorHolder.getInjector().inject(this);

Not sure why my Application.get().getTransactionManager() call didn't work. Maybe something to do with the createProxy call???

I tried to put the InjectorHolder call in the DisDelegate constructor, but then my webapp would not start. Maybe because DisDelegate is created in Homepage.java via a SpringBean as well.

public class HomePage extends WebPage {

	private static final long serialVersionUID = 1L;
	
	@SpringBean (name = "disService")
	private DisDelegate dDelegate;
....