Re-structuring and adding changes after testing

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/services/impl/PlatformManagementAPIImpl.java

@@ -101,6 +101,10 @@ public class PlatformManagementAPIImpl implements PlatformManagementAPI {
         int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId(true);
         try {
             Platform platform = APIUtil.getPlatformManager().getPlatform(tenantId, id);
+
+            if (platform == null) {
+                return Response.status(Response.Status.NOT_FOUND).entity("Platform not found").build();
+            }
             return Response.status(Response.Status.OK).entity(platform).build();
         } catch (PlatformManagementDAOException e) {
             log.error("Error while trying the get the platform with the identifier : " + id + " for the tenant :"

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/Platform.java

@@ -68,6 +68,8 @@ public class Platform {
         this.iconName = platform.getIconName();
         this.fileBased = platform.isFileBased();
         this.shared = platform.isShared();
+        this.enabled = platform.isEnabled();
+        this.defaultTenantMapping = platform.isDefaultTenantMapping();
         if (platform.getProperties() != null) {
             this.properties = new ArrayList<>();
             for (Property property : platform.getProperties()) {

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/PlatformDAO.java

@@ -48,4 +48,10 @@ public interface PlatformDAO {
 
     void removePlatforms(int tenantId) throws PlatformManagementDAOException;
 
+    int getSuperTenantAndOwnPlatforms(String platformIdentifier, int tenantId) throws PlatformManagementDAOException;
+
+    Platform getTenantOwnedPlatform(int tenantId, String platformIdentifier) throws PlatformManagementDAOException;
+
+    int getMultiTenantPlatforms(String identifier) throws PlatformManagementDAOException;
+
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/platform/GenericPlatformDAOImpl.java

@@ -41,8 +41,7 @@ import java.util.List;
 public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformDAO {
     private static Log log = LogFactory.getLog(GenericPlatformDAOImpl.class);
 
-    @Override
+    @Override public int register(int tenantId, Platform platform) throws PlatformManagementDAOException {
-    public int register(int tenantId, Platform platform) throws PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         try {
             int platformId = getPlatformId(tenantId, platform.getIdentifier());
@@ -50,7 +49,8 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
                 Connection connection = this.getDBConnection();
                 if (!platform.isFileBased()) {
                     String insertToPlatform = "INSERT INTO APPM_PLATFORM (IDENTIFIER, TENANT_ID, NAME, FILE_BASED,  "
-                            + "DESCRIPTION, IS_SHARED, ICON_NAME)" + " VALUES (?, ?, ?, ?, ?, ?, ?)";
+                            + "DESCRIPTION, IS_SHARED, ICON_NAME, IS_DEFAULT_TENANT_MAPPING)" + " VALUES (?, ?, ?, ?, "
+                            + "?, ?, ?, ?)";
                     preparedStatement = connection.prepareStatement(insertToPlatform);
                     preparedStatement.setString(1, platform.getIdentifier());
                     preparedStatement.setInt(2, tenantId);
@@ -59,6 +59,7 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
                     preparedStatement.setString(5, platform.getDescription());
                     preparedStatement.setBoolean(6, platform.isShared());
                     preparedStatement.setString(7, platform.getIconName());
+                    preparedStatement.setBoolean(8, platform.isDefaultTenantMapping());
                     preparedStatement.execute();
 
                     platformId = getPlatformId(tenantId, platform.getIdentifier());
@@ -78,11 +79,14 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
                     }
                 } else {
                     String insertToPlatform =
-                            "INSERT INTO APPM_PLATFORM (IDENTIFIER, TENANT_ID, FILE_BASED)" + " VALUES (?, ?, ?)";
+                            "INSERT INTO APPM_PLATFORM (IDENTIFIER, TENANT_ID, FILE_BASED, IS_SHARED, "
+                                    + "IS_DEFAULT_TENANT_MAPPING) VALUES (?, ?, ?, ?, ?)";
                     preparedStatement = connection.prepareStatement(insertToPlatform);
                     preparedStatement.setString(1, platform.getIdentifier());
                     preparedStatement.setInt(2, tenantId);
                     preparedStatement.setBoolean(3, true);
+                    preparedStatement.setBoolean(4, platform.isShared());
+                    preparedStatement.setBoolean(5, platform.isDefaultTenantMapping());
                     preparedStatement.execute();
                 }
                 if (platformId == -1) {
@@ -109,9 +113,8 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-    @Override
+    @Override public void update(int tenantId, String oldPlatformIdentifier, Platform platform)
-    public void update(int tenantId, String oldPlatformIdentifier, Platform platform) throws
+            throws PlatformManagementDAOException {
-            PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         try {
             int platformId = getPlatformId(tenantId, oldPlatformIdentifier);
@@ -121,7 +124,8 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
             if (platformId != -1) {
                 Connection connection = this.getDBConnection();
                 if (!platform.isFileBased()) {
-                    String insertToPlatform = "UPDATE APPM_PLATFORM SET DESCRIPTION=?, IS_SHARED=?, ICON_NAME=?";
+                    String insertToPlatform = "UPDATE APPM_PLATFORM SET DESCRIPTION=?, IS_SHARED=?, ICON_NAME=?, "
+                            + "IS_DEFAULT_TENANT_MAPPING=?";
                     if (!isIdentifierNull) {
                         insertToPlatform += ",IDENTIFIER = ? ";
                     }
@@ -133,19 +137,20 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
                     preparedStatement.setString(1, platform.getDescription());
                     preparedStatement.setBoolean(2, platform.isShared());
                     preparedStatement.setString(3, platform.getIconName());
+                    preparedStatement.setBoolean(4, platform.isDefaultTenantMapping());
 
                     if (!isIdentifierNull && !isNameNull) {
-                        preparedStatement.setString(4, platform.getIdentifier());
+                        preparedStatement.setString(5, platform.getIdentifier());
+                        preparedStatement.setString(6, platform.getName());
+                        preparedStatement.setInt(7, platformId);
+                    } else if (isIdentifierNull && !isNameNull) {
                         preparedStatement.setString(5, platform.getName());
                         preparedStatement.setInt(6, platformId);
-                    } else if (isIdentifierNull && !isNameNull) {
-                        preparedStatement.setString(4, platform.getName());
-                        preparedStatement.setInt(5, platformId);
                     } else if (!isIdentifierNull) {
-                        preparedStatement.setString(4, platform.getIdentifier());
+                        preparedStatement.setString(5, platform.getIdentifier());
-                        preparedStatement.setInt(5, platformId);
+                        preparedStatement.setInt(6, platformId);
                     } else {
-                        preparedStatement.setInt(4, platformId);
+                        preparedStatement.setInt(5, platformId);
                     }
                     preparedStatement.execute();
 
@@ -217,10 +222,8 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-
+    @Override public void unregister(int tenantId, String platformIdenfier, boolean isFileBased)
-    @Override
+            throws PlatformManagementDAOException {
-    public void unregister(int tenantId, String platformIdenfier, boolean isFileBased) throws
-            PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         try {
             Platform platform = getPlatform(tenantId, platformIdenfier);
@@ -284,8 +287,8 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-    private int getTenantPlatformMapping(int tenantId, String platformIdentifier) throws
+    private int getTenantPlatformMapping(int tenantId, String platformIdentifier)
-            PlatformManagementDAOException {
+            throws PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         ResultSet resultSet = null;
         String getMapping = "SELECT MAPPING.ID as ID FROM (SELECT ID, PLATFORM_ID FROM APPM_PLATFORM_TENANT_MAPPING "
@@ -312,8 +315,7 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-    @Override
+    @Override public void removeMapping(int tenantId, String platformIdentifier) throws PlatformManagementDAOException {
-    public void removeMapping(int tenantId, String platformIdentifier) throws PlatformManagementDAOException {
         String deleteMapping = "DELETE FROM APPM_PLATFORM_TENANT_MAPPING WHERE ID = ?";
         PreparedStatement preparedStatement = null;
         try {
@@ -338,8 +340,7 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-    @Override
+    @Override public void removeMappingTenants(String platformIdentifier) throws PlatformManagementDAOException {
-    public void removeMappingTenants(String platformIdentifier) throws PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         int platformId = getPlatformId(MultitenantConstants.SUPER_TENANT_ID, platformIdentifier);
         String getMapping = "DELETE FROM APPM_PLATFORM_TENANT_MAPPING WHERE TENANT_ID != ? AND PLATFORM_ID=?";
@@ -360,23 +361,21 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-
+    @Override public List<Platform> getPlatforms(int tenantId) throws PlatformManagementDAOException {
-    @Override
-    public List<Platform> getPlatforms(int tenantId) throws PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         ResultSet resultSet = null;
 
         if (log.isDebugEnabled()) {
             log.debug("GetPlaforms request received for the tenant ID " + tenantId);
         }
-        String selectQuery =
+        String selectQuery = "SELECT MAPPING.ID, PLATFORM.IDENTIFIER FROM (SELECT * FROM APPM_PLATFORM "
-                "SELECT MAPPING.ID, PLATFORM.IDENTIFIER FROM (SELECT * FROM APPM_PLATFORM WHERE TENANT_ID=? OR "
+                + "WHERE TENANT_ID=? OR IS_SHARED = TRUE ) PLATFORM LEFT JOIN APPM_PLATFORM_TENANT_MAPPING "
-                        + "IS_SHARED = TRUE AND FILE_BASED = FALSE) PLATFORM LEFT JOIN APPM_PLATFORM_TENANT_MAPPING "
+                + "MAPPING ON PLATFORM.ID = MAPPING.PLATFORM_ID AND MAPPING.TENANT_ID = ?";
-                        + "MAPPING ON PLATFORM.ID = MAPPING.PLATFORM_ID";
         try {
             Connection connection = this.getDBConnection();
             preparedStatement = connection.prepareStatement(selectQuery);
             preparedStatement.setInt(1, tenantId);
+            preparedStatement.setInt(2, tenantId);
             resultSet = preparedStatement.executeQuery();
             List<Platform> platforms = new ArrayList<>();
             if (log.isDebugEnabled()) {
@@ -413,9 +412,9 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
     public Platform getPlatform(String tenantDomain, String platformIdentifier) throws PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         ResultSet resultSet = null;
-        String platformQuery = "SELECT * FROM (SELECT * FROM APPM_PLATFORM WHERE (TENANT_DOMAIN=? AND IDENTIFIER=?) " +
+        String platformQuery = "SELECT * FROM (SELECT * FROM APPM_PLATFORM WHERE (TENANT_DOMAIN=? AND IDENTIFIER=?) "
-                "OR (IS_SHARED = TRUE AND IDENTIFIER=?) AND FILE_BASED = FALSE ) PLATFORM " +
+                + "OR (IS_SHARED = TRUE AND IDENTIFIER=?) AND FILE_BASED = FALSE ) PLATFORM "
-                "LEFT JOIN APPM_PLATFORM_PROPERTIES PROPS ON PLATFORM.ID = PROPS.PLATFORM_ID";
+                + "LEFT JOIN APPM_PLATFORM_PROPERTIES PROPS ON PLATFORM.ID = PROPS.PLATFORM_ID";
         try {
             Connection connection = this.getDBConnection();
             preparedStatement = connection.prepareStatement(platformQuery);
@@ -457,8 +456,7 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-    @Override
+    @Override public Platform getPlatform(int tenantId, String identifier) throws PlatformManagementDAOException {
-    public Platform getPlatform(int tenantId, String identifier) throws PlatformManagementDAOException  {
         Connection conn;
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -467,13 +465,15 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         try {
             conn = this.getDBConnection();
             sql = "SELECT MAPPING.ID, PLATFORM.IDENTIFIER, PLATFORM.FILE_BASED, PLATFORM.ID, PLATFORM.NAME, PLATFORM"
-                    + ".DESCRIPTION, PLATFORM.ICON_NAME, PLATFORM.IS_SHARED FROM (SELECT * FROM APPM_PLATFORM WHERE "
+                    + ".DESCRIPTION, PLATFORM.ICON_NAME, PLATFORM.IS_SHARED, PLATFORM.IS_DEFAULT_TENANT_MAPPING FROM "
-                    + "IDENTIFIER= ? AND (TENANT_ID=? OR IS_SHARED = TRUE AND FILE_BASED = FALSE)) PLATFORM LEFT JOIN "
+                    + "(SELECT * FROM APPM_PLATFORM WHERE IDENTIFIER= ? AND (TENANT_ID=? OR IS_SHARED = TRUE)) "
-                    + "APPM_PLATFORM_TENANT_MAPPING MAPPING ON PLATFORM.ID = MAPPING.PLATFORM_ID";
+                    + "PLATFORM LEFT JOIN APPM_PLATFORM_TENANT_MAPPING MAPPING ON PLATFORM.ID = MAPPING.PLATFORM_ID "
+                    + "AND MAPPING.TENANT_ID = ?";
 
             stmt = conn.prepareStatement(sql);
             stmt.setString(1, identifier);
             stmt.setInt(2, tenantId);
+            stmt.setInt(3, tenantId);
             rs = stmt.executeQuery();
 
             Platform platform = null;
@@ -481,15 +481,15 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
             if (rs.next()) {
                 platform = new Platform();
                 platform.setFileBased(rs.getBoolean(3));
-
                 platform.setIdentifier(rs.getString(2));
+                platform.setShared(rs.getBoolean(8));
+                platform.setDefaultTenantMapping(rs.getBoolean(9));
+
                 if (!platform.isFileBased()) {
                     platform.setId(rs.getInt(4));
                     platform.setName(rs.getString(5));
                     platform.setDescription(rs.getString(6));
                     platform.setIconName(rs.getString(7));
-                    platform.setShared(rs.getBoolean(8));
-
                     if (rs.getInt(1) != 0) {
                         platform.setEnabled(true);
                     } else {
@@ -499,8 +499,9 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
             }
             return platform;
         } catch (SQLException e) {
-            throw new PlatformManagementDAOException("Error occurred while getting platform with the identifier " +
+            throw new PlatformManagementDAOException(
-                    identifier + ", for the tenant : " + tenantId, e);
+                    "Error occurred while getting platform with the identifier " + identifier + ", for the tenant : "
+                            + tenantId, e);
         } catch (DBConnectionException e) {
             throw new PlatformManagementDAOException("Error occurred while obtaining the DB connection.", e);
         } finally {
@@ -508,8 +509,7 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
         }
     }
 
-    @Override
+    @Override public void removePlatforms(int tenantId) throws PlatformManagementDAOException {
-    public void removePlatforms(int tenantId) throws PlatformManagementDAOException {
         PreparedStatement preparedStatement = null;
         String sql = "DELETE FROM APPM_PLATFORM WHERE TENANT_ID = ?";
 
@@ -519,13 +519,118 @@ public class GenericPlatformDAOImpl extends AbstractDAOImpl implements PlatformD
             preparedStatement.setInt(1, tenantId);
             preparedStatement.executeUpdate();
         } catch (DBConnectionException e) {
-            throw new PlatformManagementDAOException("Database connection error while removing the platforms for the "
+            throw new PlatformManagementDAOException(
-                    + "tenant - " + tenantId);
+                    "Database connection error while removing the platforms for the " + "tenant - " + tenantId);
         } catch (SQLException e) {
-            throw new PlatformManagementDAOException("SQL exception while executing the query " + sql + " for "
+            throw new PlatformManagementDAOException(
-                    + "the tenant : " + tenantId);
+                    "SQL exception while executing the query " + sql + " for " + "the tenant : " + tenantId);
         } finally {
             Util.cleanupResources(preparedStatement, null);
         }
     }
+
+    @Override public int getSuperTenantAndOwnPlatforms(String platformIdentifier, int tenantId)
+            throws PlatformManagementDAOException {
+        PreparedStatement preparedStatement = null;
+        ResultSet resultSet = null;
+        String sql = "SELECT ID from APPM_PLATFORM where IDENTIFIER = ? AND (TENANT_ID = ? OR (TENANT_ID = ? AND "
+                + "IS_SHARED = true)";
+
+        try {
+            Connection connection = this.getDBConnection();
+            preparedStatement = connection.prepareStatement(sql);
+            preparedStatement.setString(1, platformIdentifier);
+            preparedStatement.setInt(2, tenantId);
+            preparedStatement.setInt(3, MultitenantConstants.SUPER_TENANT_ID);
+            resultSet = preparedStatement.executeQuery();
+
+            if (resultSet.next()) {
+                return resultSet.getInt(1);
+            } else {
+                return -1;
+            }
+        } catch (DBConnectionException e) {
+            throw new PlatformManagementDAOException(
+                    "Database connection error while removing the platfor for the " + "tenant - " + tenantId);
+        } catch (SQLException e) {
+            throw new PlatformManagementDAOException(
+                    "SQL exception while executing the query " + sql + " for " + "the tenant : " + tenantId);
+        } finally {
+            Util.cleanupResources(preparedStatement, resultSet);
+        }
+
+    }
+
+    @Override public Platform getTenantOwnedPlatform(int tenantId, String platformIdentifier)
+            throws PlatformManagementDAOException {
+        Connection conn;
+        PreparedStatement stmt = null;
+        ResultSet rs = null;
+        String sql = "";
+
+        try {
+            conn = this.getDBConnection();
+            sql = "SELECT * from APPM_PLATFORM WHERE TENANT_ID = ? AND IDENTIFIER = ?";
+            stmt = conn.prepareStatement(sql);
+            stmt.setInt(1, tenantId);
+            stmt.setString(2, platformIdentifier);
+            rs = stmt.executeQuery();
+
+            Platform platform = null;
+
+            if (rs.next()) {
+                platform = new Platform();
+                platform.setFileBased(rs.getBoolean("FILE_BASED"));
+                platform.setIdentifier(rs.getString("IDENTIFIER"));
+                platform.setShared(rs.getBoolean("IS_SHARED"));
+                platform.setDefaultTenantMapping(rs.getBoolean("IS_DEFAULT_TENANT_MAPPING"));
+                if (!platform.isFileBased()) {
+                    platform.setId(rs.getInt("ID"));
+                    platform.setName(rs.getString("NAME"));
+                    platform.setDescription(rs.getString("DESCRIPTION"));
+                    platform.setIconName(rs.getString("ICON_NAME"));
+                }
+            }
+            return platform;
+        } catch (SQLException e) {
+            throw new PlatformManagementDAOException("Error occurred while executing the query : " + sql + " for "
+                    + "getting platforms owned by tenant : " + tenantId, e);
+        } catch (DBConnectionException e) {
+            throw new PlatformManagementDAOException(
+                    "Error occurred while obtaining the DB connection for getting " + "platforms owned by tenant : "
+                            + tenantId, e);
+        } finally {
+            Util.cleanupResources(stmt, rs);
+        }
+    }
+
+    @Override
+    public int getMultiTenantPlatforms(String identifier) throws PlatformManagementDAOException {
+        Connection conn;
+        PreparedStatement stmt = null;
+        ResultSet rs = null;
+        String sql = "";
+
+        try {
+            conn = this.getDBConnection();
+            sql = "SELECT ID from APPM_PLATFORM WHERE TENANT_ID != ? AND IDENTIFIER=?";
+
+            stmt = conn.prepareStatement(sql);
+            stmt.setInt(1, MultitenantConstants.SUPER_TENANT_ID);
+            stmt.setString(2, identifier);
+
+            rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                return rs.getInt(1);
+            }
+            return -1;
+        } catch (DBConnectionException e) {
+            throw new PlatformManagementDAOException("Database Connection exception while trying to get the tenants "
+                    + "which has the platforms with the platform identifier : " + identifier, e);
+        } catch (SQLException e) {
+            throw new PlatformManagementDAOException("SQL exception while executing the query " + sql + " to get the"
+                    + " tenants which has the platform with the platform identifier : " + identifier, e);
+        }
+    }
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/PlatformManagerImpl.java

@@ -156,8 +156,7 @@ public class PlatformManagerImpl implements PlatformManager {
         } else {
             return new Platform(platform);
         }
-        throw new PlatformManagementException(
+        return null;
-                "No platform was found for tenant - " + tenantId + " with platform identifier - " + identifier);
     }
 
     private Platform getPlatformFromInMemory(int tenantId, String identifier) {
@@ -182,11 +181,7 @@ public class PlatformManagerImpl implements PlatformManager {
 
     @Override
     public synchronized void register(int tenantId, Platform platform) throws PlatformManagementException {
-        if (platform.isShared() && tenantId != MultitenantConstants.SUPER_TENANT_ID) {
+        validateBeforeRegister(tenantId, platform);
-            throw new PlatformManagementException(
-                    "Platform sharing is a restricted operation, therefore Platform - " + platform.getIdentifier()
-                            + " cannot be shared by the tenant domain - " + tenantId);
-        }
         try {
             ConnectionManagerUtil.beginDBTransaction();
             int platformId = DAOFactory.getPlatformDAO().register(tenantId, platform);
@@ -208,12 +203,7 @@ public class PlatformManagerImpl implements PlatformManager {
             if (platform.isDefaultTenantMapping()) {
                 try {
                     if (platform.isShared()) {
-                        TenantManager tenantManager = DataHolder.getInstance().getRealmService().getTenantManager();
+                        sharePlatformWithOtherTenants(platform.getIdentifier());
-                        Tenant[] tenants = tenantManager.getAllTenants();
-                        for (Tenant tenant : tenants) {
-                            DAOFactory.getPlatformDAO()
-                                    .addMapping(tenant.getId(), getListOfString(platform.getIdentifier()));
-                        }
                     }
                     DAOFactory.getPlatformDAO().addMapping(tenantId, getListOfString(platform.getIdentifier()));
                 } catch (UserStoreException e) {
@@ -244,71 +234,39 @@ public class PlatformManagerImpl implements PlatformManager {
     @Override
     public void update(int tenantId, String oldPlatformIdentifier, Platform platform) throws
             PlatformManagementException {
-        if (platform.isShared() && tenantId != MultitenantConstants.SUPER_TENANT_ID) {
+        Platform oldPlatform = validateBeforeUpdate(tenantId, oldPlatformIdentifier, platform);
-            throw new PlatformManagementException(
-                    "Platform sharing is a restricted operation, therefore Platform - " + platform.getIdentifier()
-                            + " cannot be shared by the tenant domain - " + tenantId);
-        }
         try {
             ConnectionManagerUtil.beginDBTransaction();
-            Platform oldPlatform = DAOFactory.getPlatformDAO().getPlatform(tenantId, oldPlatformIdentifier);
-
-            if (oldPlatform == null) {
-                ConnectionManagerUtil.commitDBTransaction();
-                throw new PlatformManagementException(
-                        "Cannot update platform. Platform with identifier : " + oldPlatformIdentifier
-                                + " does not exist.");
-            }
-            if (platform.getIdentifier() != null && !platform.getIdentifier().equals(oldPlatformIdentifier)) {
-                Platform existingPlatform = DAOFactory.getPlatformDAO().getPlatform(tenantId, platform.getIdentifier());
-
-                if (existingPlatform != null) {
-                    ConnectionManagerUtil.commitDBTransaction();
-                    throw new PlatformManagementException(
-                            "Cannot update the identifier of the platform from '" + oldPlatformIdentifier + "' to '"
-                                    + platform.getIdentifier() + "'. Another platform exists "
-                                    + "already with the identifier '" + platform.getIdentifier() + "' for the tenant : "
-                                    + tenantId);
-                }
-            }
-
             if (platform.isFileBased()) {
                 Map<String, Platform> tenantPlatforms = this.inMemoryStore.get(tenantId);
-
                 // File based configurations will be updated in the server start-up as well.So in that case, cache,
                 // will be empty.
-                if (tenantPlatforms == null) {
+                if (tenantPlatforms != null) {
+                    if (tenantPlatforms.get(oldPlatformIdentifier) == null) {
+                        throw new PlatformManagementException(
+                                "Cannot update platform with identifier " + oldPlatformIdentifier + " as it is not "
+                                        + " existing already for the tenant " + tenantId);
+                    }
+                } else {
                     tenantPlatforms = new HashMap<>();
                     this.inMemoryStore.put(tenantId, tenantPlatforms);
                 }
-                if (tenantPlatforms.get(platform.getIdentifier()) == null) {
-                    tenantPlatforms.put(platform.getIdentifier(), platform);
-                }
                 DAOFactory.getPlatformDAO().update(tenantId, oldPlatformIdentifier, platform);
                 platform.setId(oldPlatform.getId());
                 tenantPlatforms.put(platform.getIdentifier(), platform);
-
             } else {
                 DAOFactory.getPlatformDAO().update(tenantId, oldPlatformIdentifier, platform);
             }
-            if (platform.isDefaultTenantMapping() && !oldPlatform.isDefaultTenantMapping()) {
+
             try {
                 if (platform.isShared() && !oldPlatform.isShared()) {
-                        TenantManager tenantManager = DataHolder.getInstance().getRealmService().getTenantManager();
+                    sharePlatformWithOtherTenants(platform.getIdentifier());
-                        Tenant[] tenants = tenantManager.getAllTenants();
-                        for (Tenant tenant : tenants) {
-                            DAOFactory.getPlatformDAO()
-                                    .addMapping(tenant.getId(), getListOfString(platform.getIdentifier()));
-
-                        }
                 }
-                    DAOFactory.getPlatformDAO().addMapping(tenantId, getListOfString(platform.getIdentifier()));
             } catch (UserStoreException e) {
                 ConnectionManagerUtil.rollbackDBTransaction();
                 throw new PlatformManagementException("Error occurred while assigning the platforms for tenants!",
                         e);
             }
-            }
             if (!platform.isShared() && oldPlatform.isShared()) {
                 DAOFactory.getPlatformDAO().removeMappingTenants(platform.getIdentifier());
             }
@@ -331,12 +289,6 @@ public class PlatformManagerImpl implements PlatformManager {
         }
     }
 
-    private List<String> getListOfString(String platformIdentifier) {
-        List<String> identifiers = new ArrayList<>();
-        identifiers.add(platformIdentifier);
-        return identifiers;
-    }
-
     @Override
     public void unregister(int tenantId, String identifier, boolean isFileBased) throws PlatformManagementException {
         try {
@@ -440,7 +392,6 @@ public class PlatformManagerImpl implements PlatformManager {
                     } else {
                         DAOFactory.getPlatformDAO().removeMapping(tenantId, platform.getIdentifier());
                     }
-
                     if (log.isDebugEnabled()) {
                         log.debug("Platform with identifier : " + platformIdentifier + " successfully " +
                                 (isEnabledNewStatus ? "Enabled" : "Disabled"));
@@ -458,7 +409,6 @@ public class PlatformManagerImpl implements PlatformManager {
         } finally {
             ConnectionManagerUtil.closeDBConnection();
         }
-
     }
 
     @Override
@@ -479,4 +429,137 @@ public class PlatformManagerImpl implements PlatformManager {
         }
     }
 
+    /**
+     * To share the super-tenant platform with other tenants
+     * @param platformIdentifier Identifier of the platform
+     * @throws UserStoreException User Store Exception
+     * @throws PlatformManagementDAOException Platform Management DAO Exception
+     */
+    private void sharePlatformWithOtherTenants(String platformIdentifier)
+            throws UserStoreException, PlatformManagementDAOException {
+        TenantManager tenantManager = DataHolder.getInstance().getRealmService().getTenantManager();
+        Tenant[] tenants = tenantManager.getAllTenants();
+        for (Tenant tenant : tenants) {
+            DAOFactory.getPlatformDAO()
+                    .addMapping(tenant.getId(), getListOfString(platformIdentifier));
+        }
+    }
+
+    /**
+     * Validation need to be done before registering the platform
+     *
+     * @param tenantId ID of the tenant which the platform need to registered to
+     * @param platform Platform that need to be registered
+     * @throws PlatformManagementException Platform Management Exception
+     */
+    private void validateBeforeRegister(int tenantId, Platform platform) throws PlatformManagementException {
+        validatePlatformSharing(tenantId, platform);
+        try {
+            ConnectionManagerUtil.beginDBTransaction();
+            int existingPlatformId = DAOFactory.getPlatformDAO()
+                    .getSuperTenantAndOwnPlatforms(platform.getIdentifier(), tenantId);
+            ConnectionManagerUtil.commitDBTransaction();
+            if (existingPlatformId != -1) {
+                throw new PlatformManagementException(
+                        "Another platform exists with the identifier " + platform.getIdentifier() + " in the tenant "
+                                + tenantId + " or super-tenant. Please choose a "
+                                + "different identifier for your platform");
+            }
+        } catch (TransactionManagementException | DBConnectionException e) {
+            ConnectionManagerUtil.rollbackDBTransaction();
+            throw new PlatformManagementException(
+                    "Error while checking pre-conditions before registering" + " platform identifier '" + platform
+                            .getIdentifier() + "' for the tenant :" + tenantId);
+        } finally {
+            ConnectionManagerUtil.closeDBConnection();
+        }
+    }
+
+    /**
+     * Validations that need to be done before updating the platform
+     *
+     * @param tenantId              ID of the tenant
+     * @param oldPlatformIdentifier Identifier of the old platform
+     * @param platform              Updated platform
+     * @return Old platform if all the validation succeeds
+     * @throws PlatformManagementException Platform ManagementException
+     */
+    private Platform validateBeforeUpdate(int tenantId, String oldPlatformIdentifier, Platform platform) throws
+            PlatformManagementException {
+        validatePlatformSharing(tenantId, platform);
+        try {
+            ConnectionManagerUtil.beginDBTransaction();
+            Platform oldPlatform = DAOFactory.getPlatformDAO().getTenantOwnedPlatform(tenantId, oldPlatformIdentifier);
+            if (oldPlatform == null) {
+                ConnectionManagerUtil.commitDBTransaction();
+                throw new PlatformManagementException(
+                        "Cannot update platform. Platform with identifier : " + oldPlatformIdentifier
+                                + " does not exist for the tenant : " + tenantId);
+            }
+            if (platform.getIdentifier() != null && !platform.getIdentifier().equals(oldPlatformIdentifier)) {
+                int existingPlatformID = DAOFactory.getPlatformDAO()
+                        .getSuperTenantAndOwnPlatforms(platform.getIdentifier(), tenantId);
+                ConnectionManagerUtil.commitDBTransaction();
+                if (existingPlatformID == -1) {
+                    throw new PlatformManagementException(
+                            "Cannot update the identifier of the platform from '" + oldPlatformIdentifier + "' to '"
+                                    + platform.getIdentifier() + "'. Another platform exists "
+                                    + "already with the identifier '" + platform.getIdentifier() + "' for the tenant : "
+                                    + tenantId + " or in super-tenant");
+                }
+            }
+            return oldPlatform;
+        } catch (TransactionManagementException | DBConnectionException e) {
+            ConnectionManagerUtil.rollbackDBTransaction();
+            throw new PlatformManagementException(
+                    "Database error while validating the platform update with the " + "platform identifier: "
+                            + oldPlatformIdentifier + " for the tenant :" + tenantId);
+        } finally {
+            ConnectionManagerUtil.closeDBConnection();
+        }
+    }
+
+        /**
+     * To validate whether this platform can be shared or not before registering and updating the platform
+     *
+     * @param tenantId ID of the tenant
+     * @param platform Platform to be validated for sharing
+     */
+    private void validatePlatformSharing(int tenantId, Platform platform) throws PlatformManagementException {
+        if (platform.isShared() && tenantId != MultitenantConstants.SUPER_TENANT_ID) {
+            throw new PlatformManagementException(
+                    "Platform sharing is a restricted operation, therefore Platform - " + platform.getIdentifier()
+                            + " cannot be shared by the tenant domain - " + tenantId);
+        }
+        try {
+            ConnectionManagerUtil.beginDBTransaction();
+            if (platform.isShared()) {
+                int sharedPlatform = DAOFactory.getPlatformDAO().getMultiTenantPlatforms(platform.getIdentifier());
+                ConnectionManagerUtil.commitDBTransaction();
+                if (sharedPlatform != -1) {
+                    throw new PlatformManagementException(
+                            "Platform '" + platform.getIdentifier() + "' cannot be shared as some other tenants have "
+                                    + "platforms with the same identifier.");
+                }
+            }
+        } catch (TransactionManagementException | DBConnectionException e) {
+            ConnectionManagerUtil.rollbackDBTransaction();
+            throw new PlatformManagementException(
+                    "Error while checking platform sharing conditions for " + " platform identifier '" + platform
+                            .getIdentifier() + "' for the tenant :" + tenantId);
+        } finally {
+            ConnectionManagerUtil.rollbackDBTransaction();
+        }
+    }
+
+    /**
+     * To get the list of the given platform Identifier
+     * @param platformIdentifier Identifier of the Platform
+     * @return Platform Identifier as a list
+     */
+    private List<String> getListOfString(String platformIdentifier) {
+        List<String> identifiers = new ArrayList<>();
+        identifiers.add(platformIdentifier);
+        return identifiers;
+    }
 }

features/application-mgt/org.wso2.carbon.device.application.mgt.server.feature/src/main/resources/dbscripts/cdm/application-mgt/h2.sql

@@ -13,6 +13,7 @@ NAME VARCHAR (255),
 FILE_BASED BOOLEAN,
 DESCRIPTION LONGVARCHAR,
 IS_SHARED BOOLEAN,
+IS_DEFAULT_TENANT_MAPPING BOOLEAN,
 ICON_NAME VARCHAR (100),
 PRIMARY KEY (IDENTIFIER, TENANT_ID)
 );

features/application-mgt/org.wso2.carbon.device.application.mgt.server.feature/src/main/resources/dbscripts/cdm/application-mgt/mysql.sql

@@ -22,6 +22,7 @@ NAME VARCHAR (255),
 FILE_BASED BOOLEAN,
 DESCRIPTION VARCHAR (2048),
 IS_SHARED BOOLEAN,
+IS_DEFAULT_TENANT_MAPPING BOOLEAN,
 ICON_NAME VARCHAR (100),
 PRIMARY KEY (IDENTIFIER, TENANT_ID)
 );