Christopher Whu

just wondering why this is acceptable

protected void saveOrUpdate(Object obj) { try { startOperation(); session.save(obj); session.getTransaction().commit(); } catch (HibernateException e) { handleException(e); } finally { session.close(); } } protected void saveOrUpdateM(Object[] objectList){ try{ startOperation(); for (int i=0;i<objectList.length;i++) { session.saveOrUpdate(objectList[i]); } } catch (HibernateException e) { handleException(e); } finally { session.getTransaction().commit(); session.close(); } }

but this is not (an arraylist instead of a array)
protected void saveOrUpdate(Object obj) { try { startOperation(); session.save(obj); session.getTransaction().commit(); } catch (HibernateException e) { handleException(e); } finally { session.close(); } } protected void saveOrUpdateM(ArrayList><Object> objectList){ try{ startOperation(); for (int i=0;i<objectList.size();i++) { session.saveOrUpdate(objectList.get(i)); } } catch (HibernateException e) { handleException(e); } finally { session.getTransaction().commit(); session.close(); } }


thanks in advance!>

i was wondering if there is an easy to use technology that can look a directory and update the jars to the most current versions. please advise me on this..

basically i want to know when my glassfish java server needs to have some of its jars updated... i lost about 2 days this week do to my mojarra related jars being old even though my glass fish install was up to date.

i am hoping this saves some people some headaches but i updated jsf-api.jar and jsf-impl.jar w/in my modules directory in glass fish and now my code is working as you think it should... Its beautiful... I hope this saves someone some time. I was using an up to date version of glassfish and i guess my mojarra related jars where old?

i have seen quite a few questions about why ajax is not firing in jsf drop downs... i am stuck on this right now so i created a simple example and i look forward to the discussion that it creates.

Backing Bean

package views; import dao.productDescriber.ProductLineDAO; import dao.productDescriber.QualityLevelDAO; import dto.productDescriber.ProductLine; import dto.productDescriber.QualityLevel; import javax.enterprise.context.SessionScoped; import javax.faces.event.AjaxBehaviorEvent; import javax.inject.Named; import java.io.Serializable; import java.util.ArrayList; @Named @SessionScoped public class TestView implements Serializable { private QualityLevelDAO qualityLevelDAO = new QualityLevelDAO(); private ProductLineDAO productLineDAO = new ProductLineDAO(); private QualityLevel chosenQualityLevel = new QualityLevel(); private ProductLine chosenProductLine = new ProductLine(); private ArrayList<QualityLevel> qualityLevels = qualityLevelDAO.list(); private ArrayList<ProductLine> productLines = productLineDAO.list(); private String stringToUpdate = "CHANGE IS GOOD"; // Methods --------------------------------------------------------------------------- public void listenForChange(AjaxBehaviorEvent event){ System.out.println("I CHANGED"); this.stringToUpdate = this.chosenQualityLevel.getName(); } // Getter & Setter -------------------------------------------------------------------- public ProductLine getChosenProductLine() { return chosenProductLine; } public void setChosenProductLine(ProductLine chosenProductLine) { this.chosenProductLine = chosenProductLine; } public QualityLevel getChosenQualityLevel() { return chosenQualityLevel; } public void setChosenQualityLevel(QualityLevel chosenQualityLevel) { this.chosenQualityLevel = chosenQualityLevel; } public ArrayList<QualityLevel> getQualityLevels() { return qualityLevels; } public void setQualityLevels(ArrayList<QualityLevel> qualityLevels) { this.qualityLevels = qualityLevels; } public String getStringToUpdate() { return stringToUpdate; } public void setStringToUpdate(String stringToUpdate) { this.stringToUpdate = stringToUpdate; } public ArrayList<ProductLine> getProductLines() { return productLines; } public void setProductLines(ArrayList<ProductLine> productLines) { this.productLines = productLines; } }

and here is the xhtml

<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns:ui="http://java.sun.com/jsf/facelets" xmlns="http://www.w3.org/1999/xhtml" xmlns:p="http://primefaces.org/ui" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html"> <h:head> <title>Dropdown / Ajax</title> </h:head> <h:body> <h1>Dropdown / Ajax</h1> <h:form prependId="false"> <br /> <hr /> <br /> <h:selectOneMenu value="#{testView.chosenQualityLevel}"> <f:selectItems value="#{testView.qualityLevels}" var="i" itemLabel="#{i.name}" itemValue="#{i}"/> <f:ajax listener="#{testView.listenForChange}"/> </h:selectOneMenu> <br /> <hr /> <br /> <h:selectOneMenu value="#{testView.chosenProductLine}"> <f:selectItems value="#{testView.productLines}" var="i" itemLabel="#{i.name}" itemValue="#{i}"/> <f:ajax event="blur" listener="#{testView.listenForChange}"/> </h:selectOneMenu> </h:form> </h:body> </html>

Ok i changed the code some. How do you guys like this... How would you improve upon this.
Generic DAO
public interface GenericDAO <T extends ProductDescriber> { // Methods ----------------------------------------------------------------- public void insert(ProductDescriber t); public void delete(ProductDescriber id); public ArrayList<ProductDescriber> list(); public ProductDescriber find(int id); public void update(ProductDescriber object); }

Implementing Super Class
package dao; import dto.ProductDescriber; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import utils.DatabaseUtils; import utils.MapResultSetToObject; public class GenericDAOImp <T extends ProductDescriber> implements GenericDAO { private DatabaseUtils dbUtils = new DatabaseUtils(); private MapResultSetToObject mapResultSetToObject = new MapResultSetToObject(); private Class<T> clazz; private String SQL_QUERY_LIST; @Override public ArrayList<ProductDescriber> list() { System.out.println("GenericDAOImp lists"); ArrayList<ProductDescriber> tempList = new ArrayList<ProductDescriber>(); Connection connection = null; System.out.println(getClazz().getName()); PreparedStatement preparedStatement = null; ResultSet resultSet = null; try { connection = dbUtils.getMySQLNJDIConnection(); preparedStatement = connection.prepareStatement(getSQL_QUERY_LIST()); resultSet = preparedStatement.executeQuery(); while(resultSet.next()){ System.out.println("adding one"); tempList.add(mapResultSetToObject.mapService(resultSet, getClazz())); } } catch(SQLException sqlE){ System.out.println(sqlE.toString()); while(sqlE != null){ System.out.println("== Sql Exception : ArrayList<ProductLine> list() "); System.out.println("sql error message :" + sqlE.getMessage()); System.out.println("sql state :" + sqlE.getSQLState()); System.out.println("sql error code :" + sqlE.getErrorCode()); sqlE = sqlE.getNextException(); } } finally { dbUtils.close(connection, preparedStatement, resultSet); } return tempList; } /* * ******************* GET & SET ****************************************** */ public Class<T> getClazz() { return clazz; } public void setClazz(Class<T> clazz) { this.clazz = clazz; } public String getSQL_QUERY_LIST() { return SQL_QUERY_LIST; } public void setSQL_QUERY_LIST(String SQL_QUERY_LIST) { this.SQL_QUERY_LIST = SQL_QUERY_LIST; } }




extends GenericDAOImp implements GenericDAO
public class ProductLineDAO extends GenericDAOImp implements GenericDAO { private static final String SQL_LIST_ALL_PRODUCT_LINES = "SELECT product_line_id, product_line_name, product_line_description_short, product_line_description_long FROM product_line"; @Override public ArrayList list() { System.out.println("ProductLineDAO llist"); super.setSQL_QUERY_LIST(SQL_LIST_ALL_PRODUCT_LINES); ArrayList<ProductLine> tempList = super.list(); return tempList; } }

MapResultSetToObject

public class MapResultSetToObject { private ProductLine tempPL = new ProductLine(1, "temp", "temp","temp"); public ProductDescriber mapService(ResultSet rs, Class clazz) throws SQLException { System.out.println("************ class is " + clazz.getName()); if(clazz.isInstance(tempPL)){ System.out.println("OK"); return new ProductLine( rs.getInt("product_line_id"), rs.getString("product_line_name"), rs.getString("product_line_description_short"), rs.getString("product_line_description_long") ); } else{ System.out.println("SHIT"); return null; } } }


Generic View
@Named @SessionScoped public class GenericView implements Serializable { private String theHeader = "Welcome To The Skunkworks"; private GenericDAOImp theDao = null; private ArrayList<ProductDescriber> theList = new ArrayList<ProductDescriber>() ; private Class clazz = null; private ProductDescriber chosen = null; public void buildlist(){ System.out.println("generic view init"); theDao.setClazz(getClazz()); theList = theDao.list(); } public void delete(){ theList.remove(chosen); } /* * ******************* GET & SET ****************************************** */ public String getTheHeader() { return theHeader; } public void setTheHeader(String theHeader) { this.theHeader = theHeader; } public ArrayList<ProductDescriber> getTheList() { return theList; } public void setTheList(ArrayList<ProductDescriber> theList) { this.theList = theList; } public GenericDAO getTheDao() { return theDao; } public void setTheDao(GenericDAOImp theDao) { this.theDao = theDao; } public Class getClazz() { return clazz; } public void setClazz(Class clazz) { this.clazz = clazz; } public ProductDescriber getChosen() { return chosen; } public void setChosen(ProductDescriber chosen) { this.chosen = chosen; } }

extends GenericView implements Serializable
public class ProductLineView extends GenericView implements Serializable { private ProductLine example = new ProductLine(1, "temp", "temp","temp"); private ProductLineDAO theDao = new ProductLineDAO(); @PostConstruct public void init(){ System.out.println("regular view init"); super.setClazz(example.getClass()); super.setTheDao(theDao); super.buildlist(); } }

i will hopefully be able to put up more code tonight...

I think i have a halfway solution... I basically created a superclass for my DTO's that i want to be off the generic DAO.

i have to set the class at the top of the DAO, which is a bit lame but i was quite happy with it (late last night)

I am curious to see the improvements you would recommend...

thanks for the quick turnaround, i will see if i can implement some of this when i get home...

I am trying to learn more about generic so i am trying to create a generic DAO for an older project. My problem is that i am still copying alot of code. I am hoping you guys can help me figure out a simple solution (and increase my understanding of generics). Once again i apologize in advance for my english (its not my native language)

i have my interfaces

public interface GenericDAO<T> {
public T saveOrUpdate(T entity);
public void delete(T entity);
public T findById(int id);
public ArrayList<T> findAll();
}

i have my abstract class that implements the above interface
abstract class GenericDAOMysqlImp<T> implements GenericDAO<T> { @Override public T saveOrUpdate(T entity) { throw new UnsupportedOperationException("Not supported yet."); } @Override public void delete(T entity) { throw new UnsupportedOperationException("Not supported yet."); } @Override public T findById(int id) { throw new UnsupportedOperationException("Not supported yet."); } @Override public ArrayList<T> findAll() { throw new UnsupportedOperationException("Not supported yet."); } }

and then i have my class that extends my abstract.
public class ProductLineDAOImp extends GenericDAOMysqlImp { private static final DatabaseUtils dbUtils = new DatabaseUtils(); private static final String SQL_LIST_ALL_PRODUCT_LINES = "SELECT product_line_id, product_line_name, product_line_description_short, product_line_description_long FROM product_line"; @Override public ArrayList<ProductLine> findAll(){ Connection connection = null; PreparedStatement preparedStatement = null; ResultSet resultSet = null; ArrayList<ProductLine> tempPL = new ArrayList<ProductLine>(); String queryString; try { connection = dbUtils.getMySQLNJDIConnection(); preparedStatement = connection.prepareStatement(SQL_LIST_ALL_PRODUCT_LINES); resultSet = preparedStatement.executeQuery(); while(resultSet.next()){ tempPL.add(mapProductLine(resultSet)); } } catch(SQLException sqlE){ System.out.println(sqlE.toString()); while(sqlE != null){ System.out.println("== Sql Exception : ArrayList<ProductLine> list() "); System.out.println("sql error message :" + sqlE.getMessage()); System.out.println("sql state :" + sqlE.getSQLState()); System.out.println("sql error code :" + sqlE.getErrorCode()); sqlE = sqlE.getNextException(); } } finally { dbUtils.close(connection, preparedStatement, resultSet); } return tempPL; } // Helpers ----------------------------------------------------------------- /** * Map the current row of the given ResultSet to an ProductLine. * @param resultSet The ResultSet of which the current row is to be mapped to an ProductLine. * @return The mapped MattressSize from the current row of the given ResultSet. * @throws SQLException If something fails at database level. */ private static ProductLine mapProductLine(ResultSet rs) throws SQLException { return new ProductLine( rs.getInt("product_line_id"), rs.getString("product_line_name"), rs.getString("product_line_description_short"), rs.getString("product_line_description_long") ); } }

Ultimately i would like to reuse that findAll() code by just changing the query string and the RecordSet map. Please help me solve this or at least point me down the right street.

It works!!! What a time saver... I probably have that panelgroup arrangement in like 4 or 5 files, now i can just reuse it...

ty ty ty...

i am going to give this a whirl today! Ty so much.

i have created a nice looking client detail display page, its basically just a bunch of panelgroups. i would like to be able to reuse this display to show customer details no matter what the backing bean for the page (just keep using a ui:include).

ideally i would like something like h:datatable where i can just set the value and the var...


basically something like this: (pseudo coded)


<h:dataTable value="#{adminViewCustomers.chosenCustomerArrayList}" var="c"> <ui:include src="/_includes/_clientDisplay.xhtml" /> </h:dataTable>

and then my include would look like

<h1>Name </h1> <!-- first name --> <label>First Name: </label> <h:outputText value="#{c.nameFirst}" class="confirmationDataHolder"/> <!-- last name --> <label>Last Name: </label> <h:outputText value="#{c.nameLast}" class="confirmationDataHolder"/> <!-- last name --> <label>Middle Name: </label> <h:outputText value="#{c.nameMiddle}" class="confirmationDataHolder"/> </h:panelGroup><!-- END:CLASS:formSubDivision -->

Is there a tool like this currently out there. I am just trying to prevent code re-use in my xhtml.

Thank you for all the incite... My code usually works but i always want to see what everyone else does...

I am terrible at asking questions... Is it ok/correct to use Bean injection to instead or should i just use the context

ex"
FacesContext context = FacesContext.getCurrentInstance(); context.getExternalContext().getSessionMap().put("user", current);

I have a spring authentication bean, i also have a bean that lets a system user edit his account info. In order for the user to edit his info i have to know his email address. in the old days i would have just set a session variable
session.setAttribute( "emailAddy", email );

I have been trying to use more J2ee technologies, i have loved everyone i have tried (this forum got me using JSF and i love it).

In order to solve the above issue i am injecting SessionMinder bean (which will allow me to store the email address i need) into my auth bean. Both beans are below. My question is, is this the correct way to use injections... if my way stinks, how would you do this. Thank your in advance...

package session; import dto.Customer; import java.io.Serializable; import javax.enterprise.context.SessionScoped; import javax.inject.Named; import org.apache.log4j.Logger; @Named @SessionScoped public class SessionMinder implements Serializable { // Properties -------------------------------------------------------------- Logger log = Logger.getLogger(this.getClass()); private Customer sessionCustomer = new Customer(); // Methods ----------------------------------------------------------------- public SessionMinder(){} // Get & Set --------------------------------------------------------------- public Customer getSessionCustomer() { return sessionCustomer; } public void setSessionCustomer(Customer sessionCustomer) { this.sessionCustomer = sessionCustomer; } }

my security bean
package security; import dto.Customer; import java.io.IOException; import java.io.Serializable; import javax.enterprise.context.RequestScoped; import javax.faces.context.ExternalContext; import javax.faces.context.FacesContext; import javax.inject.Inject; import javax.inject.Named; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import org.apache.log4j.Logger; import session.SessionMinder; @Named @RequestScoped public class AuthenticationBean implements Serializable { // Properties -------------------------------------------------------------- Logger log = Logger.getLogger(this.getClass()); private @Inject SessionMinder sessionMinder; private String tempEmail = ""; // Methods ----------------------------------------------------------------- public String doLogin() throws IOException, ServletException{ ExternalContext context = FacesContext.getCurrentInstance().getExternalContext(); RequestDispatcher dispatcher = ((ServletRequest) context.getRequest()).getRequestDispatcher("/j_spring_security_check"); dispatcher.forward((ServletRequest) context.getRequest(), (ServletResponse) context.getResponse()); FacesContext.getCurrentInstance().responseComplete(); System.out.println("+++++++++++ EMAIL ADDY IS : " + this.tempEmail); //lets try our injection Customer tempCustomer = sessionMinder.getSessionCustomer(); tempCustomer.setEmailAddress(tempEmail); return null; } public String doLogout() { FacesContext.getCurrentInstance().getExternalContext().invalidateSession(); return "/logout.xhtml"; } // Get & Set --------------------------------------------------------------- public String getTempEmail() { return tempEmail; } public void setTempEmail(String tempEmail) { this.tempEmail = tempEmail; } }

in the end i just ended up creating a separate DAO & DTO for both the role(authority) and user table. I was really asking a coding style question. I am always curious to see if i am doing my programming the HIP and current way... I want to be like one of the cool kids...