Problem in injecting interface

[sachin yadav]

Hi all,

I am working on a simple application in spring 2 and hibernate 3. I have a signin.jsp page whcih took two values and save them to database. Form gets submitted to controller which is SignInController and i have created a SignInDao interface and having it's implementation in SignInManager class, which has method "getHibernateTemplate().merge(signIn)" to delegate the saveing of data. I inject SignInDao in SignInController using setter injection and set transaction handeling in application context file. Now i am not been able to inject the SignInDAO interface as it's giveing me an erro while running on tomcat as

    
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'signInController' defined in ServletContext resource [/WEB-INF/login-servlet.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'SignInDAO' of bean class [com.sachin.login.SignInController]: Bean property 'SignInDAO' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

I am putting up here my controller, SignInDAO interface and SignInManager which is the implementation of SignInDAO along with application context file.

login-servlet.xml

   
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
 
<beans>
<bean id="signInValidator" class="com.sachin.login.SignInValidator"/>
 
<bean id="signInController" class="com.sachin.login.SignInController">
<property name="sessionForm"><value>true</value></property>
<property name="commandName"><value>SignIn</value></property>
<property name="commandClass"><value>com.sachin.login.SignIn</value></property>
<property name="validateOnBinding"><value>true</value></property>
<property name="validator"><ref bean="signInValidator"/></property>
<property name="formView"><value>signIn</value></property>
<property name="successView"><value>success</value></property>
<property name="bindOnNewForm"><value>false</value></property>
<property name="SignInDAO"><ref bean="SignInDAO" /></property>
</bean>
 
<bean id="signInManager" class="com.sachin.login.SignInManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
 
<bean id="SignInDAO" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager" ref="transactionManager" />
<property name="target" ref="signInManager" />
<property name="transactionAttributes">
<props>
<prop key="save*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>
 
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
    <prop key="/signIn.htm">signInController</prop>
            </props>
        </property>
    </bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
    <bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
        <property name="basename"><value>messages</value></property>
    </bean>
 

<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc :-o	 racle:thin:@sachin:1521:asdb" />
<property name="username" value="PRJ" />
<property name="password" value="aaaaa" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="useTransactionAwareDataSource" value="true" />
<property name="mappingResources">
<list>
<value>SignIn.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="connection.pool_size">1</prop>
<prop key="hibernate.dialect">
org.hibernate.dialect.Oracle9Dialect
</prop>
<prop key="show_sql">true</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.cglib.use_reflection_optimizer">
false
</prop>
</props>
</property>
</bean>
 
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
 
<bean id="exceptionResolver"
class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
<prop key="org.springframework.dao.DataIntegrityViolationException">
dberror
</prop>
</props>
</property>
</bean>
 
</beans>
 

 
 

SignInController.Java

    
 
package com.sachin.login;
//import javax.servlet.http.*;
 
import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
 
public class SignInController extends SimpleFormController{
 
private SignInDAO signInDao;
private SignIn signIn;
 
public ModelAndView onBindAndValidate(
            HttpServletRequest request,
            Object command) throws Exception
{
signInDao.saveDataSheet(signIn);
//List data=signInManager.getDataSheet();
return new ModelAndView("success");
}
 
public SignInDAO getSignInDao() {
return signInDao;
}
 
public void setSignInDao(SignInDAO signInDao) {
this.signInDao = signInDao;
}
 

}

SignInDAO.Java

  
package com.sachin.login;
import org.hibernate.SessionFactory;
public interface SignInDAO {
 
    public abstract SessionFactory getSessionFactory();
    public abstract void setSessionFactory(SessionFactory sessionFactory);
    public abstract void saveDataSheet(SignIn signIn);
 
}

SignInManager.Java

package com.sachin.login;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
 

public class SignInManager extends HibernateDaoSupport implements SignInDAO{
 
public void saveDataSheet(SignIn signIn)
    {
getHibernateTemplate().merge(signIn);
    }
}    
 

Can somebody please suggest where am i wrong.