Commit to Local Forked Version of master Branch of ReactiveAndroid

Added API Fuctionality for Transactions & Pagination with sample
activites (and subsequent adapters, layouts, menus, values, manifest)
within reactiveandroid\sample-app

For review by repository owner

reactiveandroid/src/main/java/com/reactiveandroid/query/api/Pagination.java

@@ -0,0 +1,65 @@
+package com.reactiveandroid.query.api;
+
+//pull request - bendothall
+//Pagination API
+
+import android.util.Log;
+
+import com.reactiveandroid.query.QueryBase;
+import com.reactiveandroid.query.Select;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Pagination<T> extends QueryBase<T> {
+
+    private Pagination() {
+        super(null, null);
+    }
+
+    public static int getTableRowCount(Class<?> table) {
+
+        if (table == null) {
+            throw new IllegalArgumentException("Database Table referenced not found.");
+        }
+
+        return Select.from(table).count();
+    }
+
+
+    public static List loadPaginationData(
+            String tableColumn,
+            int offset,
+            int limit,
+            String orderBy,
+            Class<?> table
+    ){
+
+        if (tableColumn == null) {
+            throw new IllegalArgumentException("Database Table must be set");
+        }
+
+        if (limit == 0) {
+            throw new IllegalArgumentException("Limit cannot be set to 0");
+        }
+
+        if (orderBy == null || !(orderBy.contains("DESC") || orderBy.contains("ASC")) ) {
+            throw new IllegalArgumentException("Order must be set to DESC or ASC " + orderBy);
+        }
+
+        if (table == null) {
+            throw new IllegalArgumentException("Database Table Class referenced not found.");
+        }
+
+        List result = new ArrayList<>();
+        result = Select.from(table)
+                .orderBy(tableColumn + " " + orderBy)
+                .limit(limit)
+                .offset(offset)
+                .fetch();
+
+        return result;
+    }
+
+
+}

reactiveandroid/src/main/java/com/reactiveandroid/query/api/Transactions.java

@@ -0,0 +1,27 @@
+package com.reactiveandroid.query.api;
+
+import com.reactiveandroid.ReActiveAndroid;
+
+public final class Transactions {
+
+    public static void BeginTransactions(Class<?> databaseClass) {
+
+        if (databaseClass == null) {
+            throw new IllegalArgumentException("Database Class referenced not found.");
+        }
+
+        ReActiveAndroid.getDatabase(databaseClass).beginTransaction();
+
+    }
+
+    public static void EndTransactions(Class<?> databaseClass) {
+
+        if (databaseClass == null) {
+            throw new IllegalArgumentException("Database Class referenced not found.");
+        }
+
+        ReActiveAndroid.getDatabase(databaseClass).getWritableDatabase().setTransactionSuccessful();
+        ReActiveAndroid.getDatabase(databaseClass).endTransaction();
+    }
+
+}

sample-app/src/main/AndroidManifest.xml

@@ -21,6 +21,16 @@
         <activity android:name=".ui.activities.FoldersEditActivity"/>
         <activity android:name=".ui.activities.FolderSelectActivity"/>
 
+        <!-- pull request - bendothall -->
+        <!-- Transactions API Activity -->
+        <activity android:name=".ui.activities.TransactionsAPIActivity"
+            android:parentActivityName=".ui.activities.MainActivity"/>
+
+        <!-- pull request - bendothall -->
+        <!-- Pagination API Activity -->
+        <activity android:name=".ui.activities.PaginationAPIActivity"
+            android:parentActivityName=".ui.activities.MainActivity"/>
+
     </application>
 
 </manifest>

sample-app/src/main/java/com/reactiveandroid/sample/ui/activities/MainActivity.java

@@ -1,12 +1,14 @@
 package com.reactiveandroid.sample.ui.activities;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.SearchView;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.Toast;
 
 import com.arellomobile.mvp.MvpAppCompatActivity;
 import com.arellomobile.mvp.presenter.InjectPresenter;
@@ -74,11 +76,24 @@ public void openNoteDetailsScreen(long noteId) {
         startActivity(NoteDetailsActivity.buildIntent(this, noteId));
     }
 
+    //pull request - bendothall
+    //Transactions API
+    public void openTransactionsAPIActivityScreen() {
+        startActivity(new Intent(MainActivity.this, TransactionsAPIActivity.class));
+    }
+
+    //pull request - bendothall
+    //Pagination API
+    public void openPaginationAPIActivityScreen() {
+        startActivity(new Intent(MainActivity.this, PaginationAPIActivity.class));
+    }
+
     @Override
     public void openFoldersEditScreen() {
         startActivity(FoldersEditActivity.buildIntent(this));
     }
 
+
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.main, menu);
@@ -95,6 +110,18 @@ public boolean onOptionsItemSelected(MenuItem item) {
             case R.id.delete_all_notes:
                 presenter.onDeleteAllNotesClicked();
                 break;
+
+            //pull request - bendothall
+            //Transactions API menu item action
+            case R.id.transaction_api:
+                openTransactionsAPIActivityScreen();
+                break;
+
+            //pull request - bendothall
+            //Transactions API menu item action
+            case R.id.pagination_api:
+                openPaginationAPIActivityScreen();
+                break;
         }
         return super.onOptionsItemSelected(item);
     }