Added operation view

app/src/main/java/eu/faircode/email/DB.java

@@ -81,7 +81,8 @@ import static eu.faircode.email.ServiceAuthenticator.AUTH_TYPE_PASSWORD;
         views = {
                 TupleAccountView.class,
                 TupleIdentityView.class,
-                TupleFolderView.class
+                TupleFolderView.class,
+                TupleOperationView.class
         }
 )
 
@@ -216,6 +217,32 @@ public abstract class DB extends RoomDatabase {
                 }
             }
         });
+
+        db.operation().liveOperationView().observeForever(new Observer<List<TupleOperationView>>() {
+            private List<TupleOperationView> last = null;
+
+            @Override
+            public void onChanged(List<TupleOperationView> operations) {
+                if (operations == null)
+                    operations = new ArrayList<>();
+
+                boolean changed = false;
+                if (last == null || last.size() != operations.size())
+                    changed = true;
+                else
+                    for (int i = 0; i < operations.size(); i++)
+                        if (!operations.get(i).equals(last.get(i))) {
+                            changed = true;
+                            last = operations;
+                        }
+
+                if (changed) {
+                    Log.i("Invalidating operation view");
+                    last = operations;
+                    db.getInvalidationTracker().notifyObserversByTableNames("folder");
+                }
+            }
+        });
     }
 
     public static synchronized DB getInstance(Context context) {
@@ -234,6 +261,7 @@ public abstract class DB extends RoomDatabase {
                 mViewTables.get("account_view").clear();
                 mViewTables.get("identity_view").clear();
                 mViewTables.get("folder_view").clear();
+                mViewTables.get("operation_view").clear();
 
                 Log.i("Disabled view invalidation");
             } catch (ReflectiveOperationException ex) {
@@ -1750,6 +1778,13 @@ public abstract class DB extends RoomDatabase {
                                 "  (SELECT id FROM account" +
                                 "   WHERE host IN ('imap.arcor.de'))");
                     }
+                })
+                .addMigrations(new Migration(178, 179) {
+                    @Override
+                    public void migrate(@NonNull SupportSQLiteDatabase db) {
+                        Log.i("DB migration from version " + startVersion + " to " + endVersion);
+                        db.execSQL("CREATE VIEW IF NOT EXISTS `operation_view` AS " + TupleOperationView.query);
+                    }
                 });
     }
 

app/src/main/java/eu/faircode/email/DaoFolder.java

@@ -48,7 +48,7 @@ public interface DaoFolder {
             " LEFT JOIN account ON account.id = folder.account" +
             " LEFT JOIN message ON message.folder = folder.id AND NOT message.ui_hide" +
             " LEFT JOIN rule ON rule.folder = folder.id" +
-            " LEFT JOIN operation ON operation.folder = folder.id" +
+            " LEFT JOIN operation_view AS operation ON operation.folder = folder.id" +
             " WHERE folder.account = :account AND account.synchronize" +
             " GROUP BY folder.id")
     List<TupleFolderEx> getFoldersEx(long account);
@@ -87,7 +87,7 @@ public interface DaoFolder {
             " JOIN account ON account.id = folder.account" +
             " LEFT JOIN message ON message.folder = folder.id" +
             " LEFT JOIN rule ON rule.folder = folder.id" +
-            " LEFT JOIN operation ON operation.folder = folder.id" +
+            " LEFT JOIN operation_view AS operation ON operation.folder = folder.id" +
             " WHERE CASE WHEN :primary THEN account.`primary` ELSE" +
             "  CASE WHEN :account IS NULL" +
             "   THEN folder.unified AND account.synchronize" +
@@ -110,7 +110,7 @@ public interface DaoFolder {
             " JOIN account ON account.id = folder.account" +
             " LEFT JOIN message ON message.folder = folder.id AND NOT message.ui_hide" +
             " LEFT JOIN rule ON rule.folder = folder.id" +
-            " LEFT JOIN operation ON operation.folder = folder.id" +
+            " LEFT JOIN operation_view AS operation ON operation.folder = folder.id" +
             " WHERE account.`synchronize`" +
             " AND ((:type IS NULL AND folder.unified) OR folder.type = :type)" +
             " GROUP BY folder.id")
@@ -148,7 +148,7 @@ public interface DaoFolder {
             " LEFT JOIN account ON account.id = folder.account" +
             " LEFT JOIN message ON message.folder = folder.id AND NOT message.ui_hide" +
             " LEFT JOIN rule ON rule.folder = folder.id" +
-            " LEFT JOIN operation ON operation.folder = folder.id" +
+            " LEFT JOIN operation_view AS operation ON operation.folder = folder.id" +
             " WHERE folder.id = :id" +
             " GROUP BY folder.id")
     LiveData<TupleFolderEx> liveFolderEx(long id);

app/src/main/java/eu/faircode/email/DaoOperation.java

@@ -70,6 +70,9 @@ public interface DaoOperation {
             " ORDER BY " + priority + ", id")
     LiveData<List<TupleOperationEx>> liveOperations(long account);
 
+    @Query(TupleOperationView.query)
+    LiveData<List<TupleOperationView>> liveOperationView();
+
     @Transaction
     @Query("SELECT operation.*" +
             " FROM operation" +

app/src/main/java/eu/faircode/email/TupleOperationView.java

@@ -0,0 +1,51 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2020 by Marcel Bokhorst (M66B)
+*/
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.room.DatabaseView;
+
+import java.util.Objects;
+
+@DatabaseView(
+        viewName = "operation_view",
+        value = TupleOperationView.query
+)
+public class TupleOperationView {
+    static final String query = "SELECT id, folder, state FROM operation";
+
+    @NonNull
+    public Long id;
+    @NonNull
+    public Long folder;
+    public String state;
+
+    @Override
+    public boolean equals(@Nullable Object obj) {
+        if (obj instanceof TupleOperationView) {
+            TupleOperationView other = (TupleOperationView) obj;
+            return (this.id.equals(other.id) &&
+                    this.folder.equals(other.folder) &&
+                    Objects.equals(this.state, other.state));
+        } else
+            return false;
+    }
+}