Added JPA connection provider and added basic support for multiple transactions to KeycloakSession

model/api/src/main/java/org/keycloak/models/KeycloakSession.java

@@ -11,9 +11,8 @@ import java.util.Set;
  * @version $Revision: 1 $
  */
 public interface KeycloakSession {
-    // Note: The reason there are so many query methods here is for layering a cache on top of an persistent KeycloakSession
 
-    KeycloakTransaction getTransaction();
+    KeycloakTransactionManager getTransaction();
 
     <T extends Provider> T getProvider(Class<T> clazz);
 
@@ -43,5 +42,4 @@ public interface KeycloakSession {
 
     void close();
 
-    void enlist(KeycloakTransaction transaction);
 }

model/api/src/main/java/org/keycloak/models/KeycloakTransaction.java

@@ -10,4 +10,5 @@ public interface KeycloakTransaction {
     void rollback();
     void setRollbackOnly();
     boolean getRollbackOnly();
-    boolean isActive();}
+    boolean isActive();
+}

model/api/src/main/java/org/keycloak/models/KeycloakTransactionManager.java

@@ -0,0 +1,11 @@
+package org.keycloak.models;
+
+/**
+ * @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
+ * @version $Revision: 1 $
+ */
+public interface KeycloakTransactionManager extends KeycloakTransaction {
+
+    void enlist(KeycloakTransaction transaction);
+
+}

model/api/src/main/java/org/keycloak/models/ModelProvider.java

@@ -13,8 +13,6 @@ import java.util.Set;
 public interface ModelProvider extends Provider {
     // Note: The reason there are so many query methods here is for layering a cache on top of an persistent KeycloakSession
 
-    KeycloakTransaction getTransaction();
-
     RealmModel createRealm(String name);
     RealmModel createRealm(String id, String name);
     RealmModel getRealm(String id);

model/api/src/main/java/org/keycloak/models/UserSessionProvider.java

@@ -12,12 +12,10 @@ import java.util.Set;
  */
 public interface UserSessionProvider extends Provider {
 
-    KeycloakTransaction getTransaction();
-
     UserSessionModel createUserSession(RealmModel realm, UserModel user, String ipAddress);
     UserSessionModel getUserSession(RealmModel realm, String id);
     List<UserSessionModel> getUserSessions(RealmModel realm, UserModel user);
-    Set<UserSessionModel> getUserSessions(RealmModel realm, ClientModel client);
+    List<UserSessionModel> getUserSessions(RealmModel realm, ClientModel client);
     int getActiveUserSessions(RealmModel realm, ClientModel client);
     void removeUserSession(RealmModel realm, UserSessionModel session);
     void removeUserSessions(RealmModel realm, UserModel user);

model/api/src/main/java/org/keycloak/models/UserSessionSpi.java

@@ -9,9 +9,11 @@ import org.keycloak.provider.Spi;
  */
 public class UserSessionSpi implements Spi {
 
+    public static final String NAME = "userSessions";
+
     @Override
     public String getName() {
-        return "userSessions";
+        return NAME;
     }
 
     @Override