Java Programming Forums - The Java Community - Web Frameworks http://www.javaprogrammingforums.com/ Struts, Spring, Tapestry etc. en Sat, 18 May 2013 10:07:27 GMT vBulletin 60 http://www.javaprogrammingforums.com/images/misc/rss.png Java Programming Forums - The Java Community - Web Frameworks http://www.javaprogrammingforums.com/ Lazyinitialization exception. http://www.javaprogrammingforums.com/web-frameworks/29483-lazyinitialization-exception.html Thu, 16 May 2013 06:59:44 GMT
Hi,

I have a 'User' entity and 'Role' entity.

User entity:

Code :
@Entity
@Table(name="user")
public class User {
@OneToMany(mappedBy="user")
private List<Role> role;
}

I am using following to retrieve roles:

Code :
User user = daoService.find(User.class, userId);
daoService.initializeLazyColletion(user.getRole());

In daoService, I have:

Code :
@Transactional(readOnly = true)
	public void initializeLazyCollection(Collection<?> collection) {
		if(collection==null) return;		
		PersistenceUnitUtil unitUtil = em.getEntityManagerFactory().getPersistenceUnitUtil();
		if(!unitUtil.isLoaded(collection)){
			collection.iterator().hasNext();
		}
	}

But I am getting following exception:

org.springframework.orm.hibernate4.HibernateSystem Exception: failed to lazily initialize a collection of role: com.test.domain.User.role, could not initialize proxy - no Session; nested exception is org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.test.domain.User.role, could not initialize proxy - no Session

Please help to fix the issue.

Regards,
]]> Web Frameworks Shareefuddin http://www.javaprogrammingforums.com/web-frameworks/29483-lazyinitialization-exception.html JavaServerFaces http://www.javaprogrammingforums.com/web-frameworks/28567-javaserverfaces.html Tue, 23 Apr 2013 21:52:05 GMT <project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mkyong.common</groupId>
<artifactId>JavaServerFaces</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>JavaServerFaces Maven Webapp</name>
<url>http://maven.apache.org</url>

<dependencies>

<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.1.7</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.1.7</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>

<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
</dependency>
<!-- Tomcat 6 need this -->
<dependency>
<groupId>com.sun.el</groupId>
<artifactId>el-ri</artifactId>
<version>1.0</version>
</dependency>

</dependencies>

<build>
<finalName>JavaServerFaces</finalName>

<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
I have installed maven. And created new Dynamic Web project in spring tool suite. When I type mvn install in the cmd prompt the
dependency jar files are not downloaded to my project "build failure". Whats went wrong here? ]]> Web Frameworks umareddy.rani3 http://www.javaprogrammingforums.com/web-frameworks/28567-javaserverfaces.html Bissiness potential in open source frameworks http://www.javaprogrammingforums.com/web-frameworks/28154-bissiness-potential-open-source-frameworks.html Fri, 19 Apr 2013 14:43:03 GMT I'm interested are there any appourtunities for making money in open source web frameworks like CakePHP and other simmilar software products. For example is there a demand for payed support. ]]> Web Frameworks rcbandit http://www.javaprogrammingforums.com/web-frameworks/28154-bissiness-potential-open-source-frameworks.html <![CDATA[HashMap<String, String> into Struts select menu?]]> http://www.javaprogrammingforums.com/web-frameworks/28075-hashmap-string-string-into-struts-select-menu.html Thu, 18 Apr 2013 17:00:12 GMT I have a hashmap of of keys and values (both strings)

the values are retrieved out of a database, and put into a form bean's hashmap variable. now i want to use a <s:select> menu and display the keys in a drop down list with the key's value being passed when selected and submitted. can this be done? if so, how?

not real but say my hashmap is called myMap, with

"1", "One"
"2", "Two"
"3,", "Three"

in it. how can i get the #'s to be shown in the drop down list but the Spelling number to be submitted off when the form is submitted. ]]> Web Frameworks jmc117 http://www.javaprogrammingforums.com/web-frameworks/28075-hashmap-string-string-into-struts-select-menu.html