Optimalizace načítání dat z databáze. Joinované kolekce lze označit jako

lazy. Do servisní vrstvy se pak implementuje transakční metoda s anotací
LazyLoader, která donačte kolekci.

src/main/java/info/bukova/isspst/AppInitListener.java

@@ -171,6 +171,7 @@ public class AppInitListener implements ServletContextListener {
 		boolean adminExists = false;
 		
 		for (User u : userService.getAll()) {
+			userService.loadAuthorities(u);
 			if (userService.hasRole(u, Constants.ROLE_ADMIN)) {
 				adminExists = true;
 				break;

src/main/java/info/bukova/isspst/SessionData.java

@@ -0,0 +1,59 @@
+package info.bukova.isspst;
+
+import info.bukova.isspst.data.Role;
+import info.bukova.isspst.data.User;
+import info.bukova.isspst.data.Workgroup;
+
+import java.io.Serializable;
+import java.util.List;
+import java.util.Map;
+
+public class SessionData implements Serializable {
+	
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -764426911263559758L;
+	
+	private List<Workgroup> userCentres;
+	private List<Workgroup> userWorkgroups;
+	private User currentUser;
+	private Map<Integer, List<Role>> workgroupRoles;
+	
+	public SessionData() {
+
+	}
+
+	public List<Workgroup> getUserCentres() {
+		return userCentres;
+	}
+
+	public void setUserCentres(List<Workgroup> userCentres) {
+		this.userCentres = userCentres;
+	}
+
+	public List<Workgroup> getUserWorkgroups() {
+		return userWorkgroups;
+	}
+
+	public void setUserWorkgroups(List<Workgroup> userWorkgroups) {
+		this.userWorkgroups = userWorkgroups;
+	}
+
+	public User getCurrentUser() {
+		return currentUser;
+	}
+
+	public void setCurrentUser(User currentUser) {
+		this.currentUser = currentUser;
+	}
+
+	public Map<Integer, List<Role>> getWorkgroupRoles() {
+		return workgroupRoles;
+	}
+
+	public void setWorkgroupRoles(Map<Integer, List<Role>> workgroupRoles) {
+		this.workgroupRoles = workgroupRoles;
+	}
+
+}

src/main/java/info/bukova/isspst/data/Member.java

@@ -31,7 +31,7 @@ public abstract class Member implements DataModel {
 	@Column(name = "MODIFIED")
 	private Date modified;
 	@ManyToMany
-	@LazyCollection(LazyCollectionOption.FALSE)
+	@LazyCollection(LazyCollectionOption.TRUE)
 	@JoinTable(name="MEMBER_PARENT", joinColumns={@JoinColumn(name="MEMBER_ID")}, inverseJoinColumns={@JoinColumn(name="PARENT_ID")})
 	private List<Workgroup> parents;
 	@Transient

src/main/java/info/bukova/isspst/data/User.java

@@ -38,7 +38,7 @@ public class User extends Member implements UserDetails, DataModel {
 	private String email;
 	@Column(name="NOTIFY")
 	private boolean notify;
-	@ManyToMany(fetch=FetchType.EAGER) 
+	@ManyToMany(fetch=FetchType.LAZY) 
 	@JoinTable(name="USER_ROLE", joinColumns={@JoinColumn(name="USER_ID")}, inverseJoinColumns={@JoinColumn(name="ROLE_ID")})
 	private List<Role> authorities;
 		

src/main/java/info/bukova/isspst/data/Workgroup.java

@@ -1,5 +1,6 @@
 package info.bukova.isspst.data;
 
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -19,14 +20,19 @@ import org.hibernate.annotations.LazyCollectionOption;
 
 @Entity
 @Table(name = "WORKGROUP")
-public class Workgroup extends Member implements OwnedDataModel { 
+public class Workgroup extends Member implements OwnedDataModel, Serializable { 
+	
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -5039169434782289101L;
 	
 	@Column(name = "CODE")
 	private String code;
 	@Column(name = "NAME")
 	private String name;
 	@ManyToMany(cascade = {CascadeType.ALL})
-	@LazyCollection(LazyCollectionOption.FALSE)
+	@LazyCollection(LazyCollectionOption.TRUE)
 	@JoinTable(name="WORKGROUP_MEMBER", joinColumns={@JoinColumn(name="WORKGROUP_ID")}, inverseJoinColumns={@JoinColumn(name="JOBMAPPING_ID")})
 	private List<JobMapping> members;
 	@Column(name = "CENTRE")

src/main/java/info/bukova/isspst/security/LoginSuccessHandler.java

@@ -0,0 +1,59 @@
+package info.bukova.isspst.security;
+
+import info.bukova.isspst.SessionData;
+import info.bukova.isspst.data.Role;
+import info.bukova.isspst.data.User;
+import info.bukova.isspst.data.Workgroup;
+import info.bukova.isspst.services.users.UserService;
+import info.bukova.isspst.services.workgroups.WorkgroupService;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
+
+public class LoginSuccessHandler implements AuthenticationSuccessHandler {
+	
+	@Autowired
+	private SessionData sessionData;
+	@Autowired
+	private WorkgroupService workgroupService;
+	@Autowired
+	private UserService userService;
+	
+	private static final Logger logger = LoggerFactory.getLogger(LoginSuccessHandler.class);
+
+	@Override
+	public void onAuthenticationSuccess(HttpServletRequest request,
+			HttpServletResponse response, Authentication auth) throws IOException,
+			ServletException {
+		
+		User u = (User) userService.loadUserByUsername(((User)auth.getPrincipal()).getUsername());
+		
+		logger.info("User " + u.getUsername() + " logged in");
+		
+		sessionData.setUserCentres(workgroupService.getUserCentres((User) auth.getPrincipal()));
+		sessionData.setUserWorkgroups(workgroupService.getUserWorkgroups((User) auth.getPrincipal()));
+		workgroupService.loadParents(u);
+		sessionData.setCurrentUser(u);
+		
+		Map<Integer, List<Role>> wgRoles = new HashMap<Integer, List<Role>>();
+		for (Workgroup w : u.getParents()) {
+			wgRoles.put(w.getId(), workgroupService.getUserWorkgroupRoles(w, u));
+		}
+		sessionData.setWorkgroupRoles(wgRoles);
+		
+		response.sendRedirect("app/");
+	}
+
+}

src/main/java/info/bukova/isspst/services/AbstractOwnedService.java

@@ -36,6 +36,10 @@ public class AbstractOwnedService<T extends OwnedDataModel> extends AbstractServ
 	
 	@Transactional
 	protected User getLoggedInUser() {
+		if (sessionData.getCurrentUser() != null) {
+			return sessionData.getCurrentUser();
+		}
+		
 		try {
 			String query = "from User where USERNAME = '" + ((UserDetails)SecurityContextHolder.getContext().getAuthentication().getPrincipal()).getUsername() + "'";
 			Query q = dao.getQuery(query);

src/main/java/info/bukova/isspst/services/AbstractService.java

@@ -3,6 +3,7 @@ package info.bukova.isspst.services;
 import static ch.lambdaj.Lambda.filter;
 import info.bukova.isspst.Constants;
 import info.bukova.isspst.Module;
+import info.bukova.isspst.SessionData;
 import info.bukova.isspst.dao.BaseDao;
 import info.bukova.isspst.data.DataModel;
 import info.bukova.isspst.data.NumberSeries;
@@ -10,6 +11,9 @@ import info.bukova.isspst.filters.Filter;
 import info.bukova.isspst.reporting.Report;
 import info.bukova.isspst.services.numberseries.NumberSeriesService;
 
+import java.lang.annotation.Annotation;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.List;
@@ -20,6 +24,7 @@ import javax.validation.Validator;
 
 import org.hibernate.NonUniqueResultException;
 import org.hibernate.Query;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -27,6 +32,8 @@ public abstract class AbstractService<T extends DataModel> implements Service<T>
 
 	protected BaseDao<T> dao;
 	private Validator validator;
+	@Autowired
+	protected SessionData sessionData;
 
 	private NumberSeriesService numberSeriesService;
 	
@@ -183,4 +190,36 @@ public abstract class AbstractService<T extends DataModel> implements Service<T>
 		
 		return currentNumber;
 	}
+
+	@Override
+	@Transactional
+	public void loadLazyData(T entity) {
+		loadLazyData("", entity);
+	}
+
+	@Override
+	@Transactional
+	public void loadLazyData(String group, T entity) {
+		Method[] methods = this.getClass().getMethods();
+		
+		for (Method m : methods) {
+			Annotation[] annotations = m.getAnnotations();
+			for (Annotation a : annotations) {
+				if (a instanceof LazyLoader) {
+					String[] values = ((LazyLoader) a).value();
+					if (group.isEmpty() || values.length == 0 || Arrays.asList(values).contains(group)) {
+						try {
+							m.invoke(this, entity);
+						} catch (IllegalArgumentException e) {
+							throw new LazyLoadException(e.getCause());
+						} catch (IllegalAccessException e) {
+							throw new LazyLoadException(e.getCause());
+						} catch (InvocationTargetException e) {
+							throw new LazyLoadException(e.getCause());
+						}
+					}
+				}
+			}
+		}
+	}
 }

src/main/java/info/bukova/isspst/services/LazyLoadException.java

@@ -0,0 +1,12 @@
+package info.bukova.isspst.services;
+
+
+public class LazyLoadException extends RuntimeException {
+
+	private static final long serialVersionUID = -2251676786418660140L;
+	
+	public LazyLoadException(Throwable cause) {
+		super(cause);
+	}
+
+}

src/main/java/info/bukova/isspst/services/LazyLoader.java

@@ -0,0 +1,12 @@
+package info.bukova.isspst.services;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface LazyLoader {
+	String[] value() default "";
+}

src/main/java/info/bukova/isspst/services/Service.java

@@ -13,6 +13,8 @@ public interface Service<T> {
 	public void update(T entity);
 	public void delete(T entity);
 	public void validate(T entity) throws ValidationException;
+	public void loadLazyData(T entity);
+	public void loadLazyData(String group, T entity);
 	public List<T> getAll();
 	public List<T> execQuery(String query);
 	public T selectSingle(String query);

src/main/java/info/bukova/isspst/services/requirement/RequirementBaseServiceImpl.java

@@ -9,11 +9,13 @@ import info.bukova.isspst.data.User;
 import info.bukova.isspst.data.Workflow;
 import info.bukova.isspst.data.Workgroup;
 import info.bukova.isspst.services.AbstractOwnedService;
+import info.bukova.isspst.services.LazyLoader;
 
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
+import org.hibernate.LazyInitializationException;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -69,27 +71,58 @@ public abstract class RequirementBaseServiceImpl<T extends RequirementBase> exte
 
 	@Override
 	@Transactional
+	@LazyLoader({"grid", "form"})
 	public void loadAuthItems(T entity) {
-		T e = dao.getById(entity.getId());
-		e.getAuthorization().size();
-		entity.setAuthorization(e.getAuthorization());
+		try {
+			if (entity.getAuthorization() == null) {
+				throw new LazyInitializationException("");
+			}
+			entity.getAuthorization().size();
+		} catch (LazyInitializationException ex) {
+			T e = dao.getById(entity.getId());
+			e.getAuthorization().size();
+			entity.setAuthorization(e.getAuthorization());
+		}
 	}
 	
 
 	@Override
 	@Transactional
+	@LazyLoader("grid")
 	public void loadType(T data) {
-		T e = dao.getById(data.getId());
-		e.getType().getType();
-		data.setType(e.getType());
+		try {
+			if (data.getType() == null) {
+				throw new LazyInitializationException("");
+			}
+			data.getType().getType();
+		} catch (LazyInitializationException ex) {
+			T e = dao.getById(data.getId());
+			
+			if (e.getType() == null) {
+				return;
+			}
+			
+			e.getType().getType();
+			data.setType(e.getType());
+		}
 	}
 
 	@Override
 	@Transactional
+	@LazyLoader({"grid", "form"})
 	public void loadWorkflow(T data) {
-		T e = dao.getById(data.getId());
-		e.getWorkflow().size();
-		data.setWorkflow(e.getWorkflow());
+		try {
+			if (data.getWorkflow() == null) {
+				throw new LazyInitializationException("");
+			}
+			data.getWorkflow().size();
+		} catch (LazyInitializationException ex) {
+			T e = dao.getById(data.getId());
+			e.getWorkflow().size();
+			e.getOwnedBy().getFullName();
+			data.setWorkflow(e.getWorkflow());
+			data.setOwnedBy(e.getOwnedBy());
+		}
 	}
 
 	@Override

src/main/java/info/bukova/isspst/services/requirement/TripRequirementServiceImpl.java

@@ -4,11 +4,13 @@ import info.bukova.isspst.Constants;
 import info.bukova.isspst.data.RequirementState;
 import info.bukova.isspst.data.TripRequirement;
 import info.bukova.isspst.data.Workgroup;
+import info.bukova.isspst.services.LazyLoader;
 import info.bukova.isspst.services.workgroups.WorkgroupService;
 
 import java.util.Date;
 import java.util.List;
 
+import org.hibernate.LazyInitializationException;
 import org.hibernate.Query;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PostFilter;
@@ -66,7 +68,7 @@ public class TripRequirementServiceImpl extends RequirementBaseServiceImpl<TripR
 	@PostFilter("hasPermission(filterObject, 'PERM_SHOW_CENTRE_REQ')")
 	public List<TripRequirement> getCentreReq() {
 		List<Workgroup> wgList = workgroupService.getUserCentres(getLoggedInUser());
-		Query q = dao.getQuery("select tr from TripRequirement tr join tr.centre c where tr.state != :state and c in (:wgList)");
+		Query q = dao.getQuery("select tr from TripRequirement tr join fetch tr.ownedBy join tr.centre c where tr.state != :state and c in (:wgList) order by tr.numser");
 		q.setParameterList("wgList", wgList);
 		q.setParameter("state", RequirementState.APPROVED);
 		return q.list();
@@ -79,25 +81,36 @@ public class TripRequirementServiceImpl extends RequirementBaseServiceImpl<TripR
 	@PostFilter("hasPermission(filterObject, 'PERM_SHOW_WORKGROUP_REQ')")
 	public List<TripRequirement> getWorkgroupReq() {
 		List<Workgroup> wgList = workgroupService.getUserWorkgroups(getLoggedInUser());
-		Query q = dao.getQuery("select tr from TripRequirement tr join tr.workgroup w where tr.state != :state and w in (:wgList)");
+		Query q = dao.getQuery("select tr from TripRequirement tr join fetch tr.ownedBy join tr.workgroup w where tr.state != :state and w in (:wgList) order by tr.numser");
 		q.setParameterList("wgList", wgList);
 		q.setParameter("state", RequirementState.APPROVED);
 		return q.list();
 	}
 
+	@SuppressWarnings("unchecked")
 	@Override
 	@Transactional
 	@PreAuthorize("hasPermission(this, 'PERM_SHOW_ALL_REQ')")
 	public List<TripRequirement> getFromAll() {
-		return super.getAll();
+		Query q = dao.getQuery("from TripRequirement as tr join fetch tr.ownedBy order by tr.numser");
+		return q.list();
 	}
 
 	@Override
 	@Transactional
+	@LazyLoader("form")
 	public void loadPassangers(TripRequirement entity) {
-		TripRequirement e = dao.getById(entity.getId());
-		e.getPassengers().size();
-		entity.setPassengers(e.getPassengers());
+		try {
+			if (entity.getPassengers() == null) {
+				throw new LazyInitializationException("");
+			}
+			
+			entity.getPassengers().size();
+		} catch (LazyInitializationException ex) {
+			TripRequirement e = dao.getById(entity.getId());
+			e.getPassengers().size();
+			entity.setPassengers(e.getPassengers());	
+		}
 	}
 
 }

src/main/java/info/bukova/isspst/services/users/UserService.java

@@ -18,5 +18,6 @@ public interface UserService extends UserDetailsService, Service<User> {
 	public String encodePassword(User user, String plain);
 	public void grantAdmin();
 	public void removeAccess();
+	public void loadAuthorities(User user);
 
 }

src/main/java/info/bukova/isspst/services/users/UserServiceImpl.java

@@ -4,6 +4,7 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
+import org.hibernate.LazyInitializationException;
 import org.hibernate.Query;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
@@ -18,6 +19,7 @@ import info.bukova.isspst.Constants;
 import info.bukova.isspst.data.Role;
 import info.bukova.isspst.data.User;
 import info.bukova.isspst.services.AbstractService;
+import info.bukova.isspst.services.LazyLoader;
 
 public class UserServiceImpl extends AbstractService<User> implements UserService {
 
@@ -34,7 +36,7 @@ public class UserServiceImpl extends AbstractService<User> implements UserServic
 	public UserDetails loadUserByUsername(String username)
 			throws UsernameNotFoundException {
 		
-		Query q = dao.getQuery("from User user where user.username = :username");
+		Query q = dao.getQuery("from User user join fetch user.authorities where user.username = :username");
 		q.setString("username", username);
 		User u = (User) q.uniqueResult();
 		
@@ -73,6 +75,10 @@ public class UserServiceImpl extends AbstractService<User> implements UserServic
 	@Override
 	@Transactional
 	public User getCurrent() {
+		if (sessionData.getCurrentUser() != null) {
+			return sessionData.getCurrentUser();
+		}
+		
 		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
 		
 		if (auth != null && auth.getPrincipal() != null) {
@@ -128,5 +134,22 @@ public class UserServiceImpl extends AbstractService<User> implements UserServic
 		return u;
 	}
 
+	@Override
+	@Transactional
+	@LazyLoader({"grid", "form"})
+	public void loadAuthorities(User user) {
+		try {
+			if (user.getAuthorities() == null) {
+				throw new LazyInitializationException("");
+			}
+			
+			user.getAuthorities().size();
+		} catch (LazyInitializationException ex) {
+			User u = dao.getById(user.getId());
+			u.getAuthorities().size();
+			user.setAuthorities(u.getAuthorities());
+		}
+	}
+
 
 }

src/main/java/info/bukova/isspst/services/workgroups/WorkgroupService.java

@@ -20,5 +20,7 @@ public interface WorkgroupService extends Service<Workgroup>  {
 	public List<Workgroup> getUserWorkgroups(User user);
 	public List<Role> getUserWorkgroupRoles(Workgroup workgroup, User user);
 	public List<Member> getMembers(Workgroup workgroup);
+	public void loadMembers(Workgroup workgroup);
+	public void loadParents(Member member);
 
 }

src/main/java/info/bukova/isspst/services/workgroups/WorkgroupServiceImpl.java

@@ -7,10 +7,12 @@ import info.bukova.isspst.data.Role;
 import info.bukova.isspst.data.User;
 import info.bukova.isspst.data.Workgroup;
 import info.bukova.isspst.services.AbstractOwnedService;
+import info.bukova.isspst.services.LazyLoader;
 
 import java.util.ArrayList;
 import java.util.List;
 
+import org.hibernate.LazyInitializationException;
 import org.hibernate.Query;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.transaction.annotation.Transactional;
@@ -66,7 +68,13 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 	}
 
 	@Override
+	@Transactional
 	public boolean isMember(Workgroup workgroup, Member member) {
+		if (member.equals(getLoggedInUser()) && sessionData.getCurrentUser() != null) {
+			return member.getParents().contains(workgroup);
+		}
+		
+		loadMembers(workgroup);
 		for (JobMapping jm : workgroup.getMembers()) {
 			if (jm.getMember().equals(member)) {
 				return true;
@@ -98,6 +106,10 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 	@Override
 	@Transactional
 	public List<Workgroup> getUserCentres(User user) {
+		if (user.equals(getLoggedInUser()) && sessionData.getUserCentres() != null) {
+			return sessionData.getUserCentres();
+		}
+		
 		List<Workgroup> parents = getParents(user);
 		
 		if (parents == null) {
@@ -112,6 +124,7 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 		}
 		
 		for (Workgroup w : getUserWorkgroups(user)) {
+			loadParents(w);
 			for (Workgroup centre : w.getParents()) {
 				if (!centres.contains(centre)) {
 					centres.add(centre);
@@ -124,6 +137,10 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 	@Override
 	@Transactional
 	public List<Workgroup> getUserWorkgroups(User user) {
+		if (user.equals(getLoggedInUser()) && sessionData.getUserWorkgroups() != null) {
+			return sessionData.getUserWorkgroups();
+		}
+		
 		List<Workgroup> parents = getParents(user);
 		
 		if (parents == null) {
@@ -141,15 +158,9 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 	}
 	
 	private List<Workgroup> getParents(User user) {
-		List<Workgroup> parents;
-		
-		if (user.getParents() == null) {
-			parents = loadUser(user).getParents();
-		} else {
-			parents = user.getParents();
-		}
-		
-		return parents;
+		loadParents(user);
+			
+		return user.getParents();
 	}
 	
 	private User loadUser(User user) {
@@ -186,6 +197,10 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 	@Override
 	@Transactional
 	public List<Role> getUserWorkgroupRoles(Workgroup workgroup, User user) {
+		if (user.equals(getLoggedInUser()) && sessionData.getWorkgroupRoles() != null) {
+			return sessionData.getWorkgroupRoles().get(workgroup.getId());
+		}
+		
 		List<Role> roles = new ArrayList<Role>();
 		User u;
 		
@@ -199,6 +214,8 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 			return null;
 		}
 		
+		loadMembers(workgroup);
+		
 		for (JobMapping jm : workgroup.getMembers()) {
 			if (jm.getMember().equals(u)) {
 				roles.add(jm.getRole());
@@ -212,7 +229,9 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 	@Transactional
 	@PreAuthorize("hasPermission(this, 'PERM_DELETE')")
 	public void delete(Workgroup entity) {
+		loadMembers(entity);
 		for (JobMapping m : entity.getMembers()) {
+			loadParents(m.getMember());
 			m.getMember().removeParent(entity);
 			dao.getSession().merge(m.getMember());
 		}
@@ -221,6 +240,7 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 
 	@Override
 	public List<Member> getMembers(Workgroup workgroup) {
+		loadMembers(workgroup);
 		List<JobMapping> jmList = workgroup.getMembers();
 		List<Member> members = new ArrayList<Member>();
 		
@@ -231,4 +251,42 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 		return members;
 	}
 
+	@Override
+	@Transactional
+	@LazyLoader({"grid", "form"})
+	public void loadMembers(Workgroup workgroup) {
+		try {
+			if (workgroup.getMembers() == null) {
+				throw new LazyInitializationException("");
+			}
+			workgroup.getMembers().size();
+		} catch (LazyInitializationException e) {
+			Workgroup w = dao.getById(workgroup.getId());
+			w.getMembers().size();
+			workgroup.setMembers(w.getMembers());
+		}
+	}
+
+	@Override
+	@Transactional
+	@LazyLoader("form")
+	public void loadParents(Member member) {
+		try {
+			if (member.getParents() == null) {
+				throw new LazyInitializationException("");
+			}
+			member.getParents().size();
+		} catch (LazyInitializationException e) {
+			if (member.isPerson()) {
+				User u = loadUser((User) member);
+				u.getParents().size();
+				member.setParents(u.getParents());
+			} else {
+				Workgroup w = dao.getById(member.getId());
+				w.getParents().size();
+				member.setParents(w.getParents());
+			}
+		}
+	}
+
 }

src/main/java/info/bukova/isspst/ui/ListViewModel.java

@@ -61,7 +61,7 @@ public class ListViewModel<T extends DataModel> {
 	}
 	
 	protected void loadLazyData(T data) {
-		
+		service.loadLazyData("grid", data);
 	}
 
 	public void setDataFilter(Filter<T> dataFilter) {
@@ -164,7 +164,7 @@ public class ListViewModel<T extends DataModel> {
 	}
 	
 	protected void loadLazyDataForEdit(T data) {
-		
+		service.loadLazyData("form", data);
 	}
 	
 	@Command

src/main/java/info/bukova/isspst/ui/dashboard/DashBoardVM.java

@@ -1,17 +1,16 @@
 package info.bukova.isspst.ui.dashboard;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
 import info.bukova.isspst.data.Role;
 import info.bukova.isspst.data.User;
 import info.bukova.isspst.data.Workgroup;
 import info.bukova.isspst.services.users.UserService;
 import info.bukova.isspst.services.workgroups.WorkgroupService;
 
-import org.springframework.security.core.context.SecurityContextHolder;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 import org.zkoss.bind.annotation.Init;
 import org.zkoss.zk.ui.select.annotation.WireVariable;
 
@@ -26,11 +25,7 @@ public class DashBoardVM {
 	
 	@Init
 	public void init() {
-		user = User.class.cast(SecurityContextHolder.getContext().getAuthentication().getPrincipal());
-		
-		if (user.getParents() == null) { // try reload from DB
-			user = userService.getCurrent();
-		}
+		user = userService.getCurrent();
 		
 		groupRoles = new HashMap<Workgroup, List<Role>>();
 		

src/main/java/info/bukova/isspst/ui/requirement/RequirementSubpage.java

@@ -15,13 +15,6 @@ public class RequirementSubpage<T extends RequirementBase> extends ListViewModel
 	{
 		return (RequirementBaseService<T>) service;
 	}
-
-	@Override
-	protected void loadLazyData(T data) {
-		this.getReqService().loadAuthItems(data);
-		this.getReqService().loadWorkflow(data);
-		this.getReqService().loadType(data);
-	}
 	
 	@Command
 	@NotifyChange({"dataBean", "canApprove"})

src/main/java/info/bukova/isspst/ui/requirement/TripRequirementListAll.java

@@ -59,10 +59,5 @@ public class TripRequirementListAll extends RequirementSubpage<TripRequirement>
 	public void reloadRelated() {
 		this.reload();
 	}
-	
-	@Override
-	protected void loadLazyDataForEdit(TripRequirement data) {
-		tripRequirementService.loadPassangers(data);
-	}
 
 }

src/main/java/info/bukova/isspst/ui/requirement/TripRequirementListCentre.java

@@ -56,10 +56,5 @@ public class TripRequirementListCentre extends RequirementSubpage<TripRequiremen
 	public void reloadRelated() {
 		this.reload();
 	}
-	
-	@Override
-	protected void loadLazyDataForEdit(TripRequirement data) {
-		tripRequirementService.loadPassangers(data);
-	}
 
 }

src/main/java/info/bukova/isspst/ui/requirement/TripRequirementListWorkgroup.java

@@ -62,10 +62,5 @@ public class TripRequirementListWorkgroup extends RequirementSubpage<TripRequire
 	public void reloadRelated() {
 		this.reload();
 	}
-	
-	@Override
-	protected void loadLazyDataForEdit(TripRequirement data) {
-		tripRequirementService.loadPassangers(data);
-	}
-	
+
 }

src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupForm.java

@@ -76,6 +76,7 @@ public class WorkgroupForm extends FormViewModel<Workgroup> {
 				if (!r.getAuthority().equals(Constants.ROLE_USER)) {
 					List<User> users = userService.getUsersWithRole(r);
 					for (User u : users) {
+						workgroupService.loadParents(u);
 						workgroupService.addMember(getDataBean(), u, r);
 					}
 				}
@@ -124,6 +125,8 @@ public class WorkgroupForm extends FormViewModel<Workgroup> {
 			return;
 		}
 		
+		workgroupService.loadMembers(getDataBean());
+		workgroupService.loadParents(u.getMember());
 		workgroupService.removeMember(getDataBean(), u);
 		
 		if (!target.equals("users")) {
@@ -139,6 +142,13 @@ public class WorkgroupForm extends FormViewModel<Workgroup> {
 			return;
 		}
 		
+		workgroupService.loadMembers(getDataBean());
+		workgroupService.loadParents(u);
+		
+		if (!u.isPerson()) {
+			workgroupService.loadMembers((Workgroup) u);
+		}
+		
 		workgroupService.addMember(getDataBean(), u, roleService.getRoleByAuthority(target));
 		
 		if (!u.isPerson()) {

src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupList.java

@@ -35,6 +35,7 @@ public class WorkgroupList extends ListViewModel<Workgroup> {
 		formZul = "workgroupForm.zul";
 		dataFilter = new WorkgroupFilter(getFilterTemplate());
 		treeFactory = new WorkgroupTreeFactory();
+		treeFactory.setWorkgroupService(workgroupService);
 		boolConverter = new BoolConverter();
 	}
 	

src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupTreeFactory.java

@@ -7,6 +7,7 @@ import info.bukova.isspst.Constants;
 import info.bukova.isspst.data.JobMapping;
 import info.bukova.isspst.data.Member;
 import info.bukova.isspst.data.Workgroup;
+import info.bukova.isspst.services.workgroups.WorkgroupService;
 
 import org.zkoss.zul.DefaultTreeModel;
 import org.zkoss.zul.TreeModel;
@@ -14,6 +15,8 @@ import org.zkoss.zul.TreeNode;
 
 public class WorkgroupTreeFactory {
 	
+	private WorkgroupService workgroupService;
+	
 	public TreeModel<TreeNode<Member>> createTreeModel(Workgroup workgroup) {
 		WorkgroupTreeNode root = new WorkgroupTreeNode(null, generateChildren(workgroup));
 						
@@ -24,6 +27,8 @@ public class WorkgroupTreeFactory {
 		Collection<WorkgroupTreeNode> children = new LinkedList<WorkgroupTreeNode>();
 		Workgroup workgroup = Workgroup.class.cast(member);
 		
+		workgroupService.loadMembers(workgroup);
+		
 		for (JobMapping jm : workgroup.getMembers()) {
 			if (jm.getRole().getAuthority().equals(Constants.ROLE_USER) && jm.getMember().isPerson()) {
 				children.add(new WorkgroupTreeNode(jm.getMember()));
@@ -35,4 +40,8 @@ public class WorkgroupTreeFactory {
 		return children;
 	}
 
+	public void setWorkgroupService(WorkgroupService workgroupService) {
+		this.workgroupService = workgroupService;
+	}
+
 }

src/main/webapp/WEB-INF/spring/root-context.xml

@@ -49,6 +49,7 @@
                 <prop key="hibernate.dialect">${jdbc.dialect}</prop>
                 <prop key="hibernate.show_sql">false</prop>
                 <prop key="hibernate.hbm2ddl.auto">update</prop>
+                <!-- <prop key="hibernate.enable_lazy_load_no_trans">true</prop> -->
             </props>
         </property>
     </bean>
@@ -81,7 +82,8 @@
 		<security:intercept-url pattern="/admin/addressbook/**" access="hasRole('PERM_READ_ADDRESSBOOK')"/>
 		<security:intercept-url pattern="/munits/**" access="hasRole('PERM_READ_MUNITS')"/>
 		<security:form-login login-page="/login.zhtml"
-			authentication-failure-handler-ref="loginFail"/>
+			authentication-failure-handler-ref="loginFail"
+			authentication-success-handler-ref="loginSuccess"/>
 		<security:http-basic/>
 		<security:logout invalidate-session="true"/>
 	</security:http>
@@ -101,6 +103,8 @@
 	
 	<bean id="loginFail" class="info.bukova.isspst.security.LoginFailHandler"/>
 	
+	<bean id="loginSuccess" class="info.bukova.isspst.security.LoginSuccessHandler"/>
+	
 	<!-- Reporting -->
 	<bean id="reportDefinition" class="info.bukova.isspst.reporting.ReportDefinition" scope="session">
 		<aop:scoped-proxy/>
@@ -109,6 +113,11 @@
 	<bean id="definitionFiller" class="info.bukova.isspst.reporting.DefinitionFiller"/>
 	
 	<bean id="genFactory" class="info.bukova.isspst.reporting.GeneratorFactory"/>
+	
+	<!-- Session data -->
+	<bean id="sessionData" class="info.bukova.isspst.SessionData" scope="session">
+		<aop:scoped-proxy/>
+	</bean>
     
     <!-- DAO -->
     <bean id="userDao" class="info.bukova.isspst.dao.jpa.UserDaoJPA">