Add a way to count calendar events/contacts.

app/src/main/java/com/etesync/syncadapter/resource/LocalAddressBook.java

@@ -23,14 +23,14 @@ import android.provider.ContactsContract.Groups;
 import android.provider.ContactsContract.RawContacts;
 import android.support.annotation.NonNull;
 
+import com.etesync.syncadapter.App;
+
 import java.io.FileNotFoundException;
 import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.logging.Level;
 
-import com.etesync.syncadapter.App;
-
 import at.bitfire.vcard4android.AndroidAddressBook;
 import at.bitfire.vcard4android.AndroidContact;
 import at.bitfire.vcard4android.AndroidGroup;
@@ -158,6 +158,18 @@ public class LocalAddressBook extends AndroidAddressBook implements LocalCollect
         }
     }
 
+    @Override
+    public long count() throws ContactsStorageException {
+        try {
+            @Cleanup Cursor cursor = provider.query(syncAdapterURI(RawContacts.CONTENT_URI),
+                    null,
+                    null, null, null);
+
+            return cursor.getCount();
+        } catch (RemoteException e) {
+            throw new ContactsStorageException("Couldn't query contacts", e);
+        }
+    }
 
     @NonNull
     public LocalContact[] getDeletedContacts() throws ContactsStorageException {

app/src/main/java/com/etesync/syncadapter/resource/LocalCalendar.java

@@ -23,6 +23,9 @@ import android.provider.CalendarContract.Reminders;
 import android.support.annotation.NonNull;
 import android.text.TextUtils;
 
+import com.etesync.syncadapter.App;
+import com.etesync.syncadapter.model.CollectionInfo;
+
 import net.fortuna.ical4j.model.component.VTimeZone;
 
 import org.apache.commons.lang3.StringUtils;
@@ -31,8 +34,6 @@ import java.io.FileNotFoundException;
 import java.util.LinkedList;
 import java.util.List;
 
-import com.etesync.syncadapter.App;
-import com.etesync.syncadapter.model.CollectionInfo;
 import at.bitfire.ical4android.AndroidCalendar;
 import at.bitfire.ical4android.AndroidCalendarFactory;
 import at.bitfire.ical4android.BatchOperation;
@@ -239,6 +240,21 @@ public class LocalCalendar extends AndroidCalendar implements LocalCollection {
         }
     }
 
+    @Override
+    public long count() throws CalendarStorageException {
+        String where = Events.CALENDAR_ID + "=?";
+        String whereArgs[] = {String.valueOf(id)};
+
+        try {
+            @Cleanup Cursor cursor = provider.query(
+                    syncAdapterURI(Events.CONTENT_URI),
+                    null,
+                    where, whereArgs, null);
+            return cursor.getCount();
+        } catch (RemoteException e) {
+            throw new CalendarStorageException("Couldn't query calendar events", e);
+        }
+    }
 
     public static class Factory implements AndroidCalendarFactory {
         public static final Factory INSTANCE = new Factory();

app/src/main/java/com/etesync/syncadapter/resource/LocalCollection.java

@@ -24,4 +24,6 @@ public interface LocalCollection {
 
     String getCTag() throws CalendarStorageException, ContactsStorageException;
     void setCTag(String cTag) throws CalendarStorageException, ContactsStorageException;
+
+    long count() throws CalendarStorageException, ContactsStorageException;
 }

app/src/main/java/com/etesync/syncadapter/resource/LocalTaskList.java

@@ -19,12 +19,13 @@ import android.os.Build;
 import android.os.RemoteException;
 import android.support.annotation.NonNull;
 
+import com.etesync.syncadapter.model.CollectionInfo;
+
 import org.dmfs.provider.tasks.TaskContract.TaskLists;
 import org.dmfs.provider.tasks.TaskContract.Tasks;
 
 import java.io.FileNotFoundException;
 
-import com.etesync.syncadapter.model.CollectionInfo;
 import at.bitfire.ical4android.AndroidTaskList;
 import at.bitfire.ical4android.AndroidTaskListFactory;
 import at.bitfire.ical4android.CalendarStorageException;
@@ -109,6 +110,21 @@ public class LocalTaskList extends AndroidTaskList implements LocalCollection {
         return tasks;
     }
 
+    @Override
+    public long count() throws CalendarStorageException {
+        String where = Tasks.LIST_ID + "=?";
+        String whereArgs[] = {String.valueOf(getId())};
+
+        try {
+            @Cleanup Cursor cursor = provider.client.query(
+                    syncAdapterURI(provider.tasksUri()),
+                    null,
+                    where, whereArgs, null);
+            return cursor.getCount();
+        } catch (RemoteException e) {
+            throw new CalendarStorageException("Couldn't query calendar events", e);
+        }
+    }
 
     @Override
     @SuppressWarnings("Recycle")