ParseSQLiteCursor.java

/*
 * Copyright (c) 2015-present, Parse, LLC.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
package com.parse;

import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.database.CharArrayBuffer;
import android.database.ContentObserver;
import android.database.Cursor;
import android.database.DataSetObserver;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;

import java.util.concurrent.Callable;
import java.util.concurrent.Executor;

import bolts.Task;

/**
 * Wrapper class to invoke {@link Cursor#close()} on a specific thread on Android versions below
 * android-14 as they require {@link Cursor#close()} to be called on the same thread the cursor
 * was created in
 *
 * https://github.com/android/platform_frameworks_base/commit/6f37f83a4802a0d411395f3abc5f24a2cfec025d
 */
/** package */ class ParseSQLiteCursor implements Cursor {

  public static Cursor create(Cursor cursor, Executor executor) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
      return cursor;
    }
    return new ParseSQLiteCursor(cursor, executor);
  }

  private Cursor cursor;
  private Executor executor;

  private ParseSQLiteCursor(Cursor cursor, Executor executor) {
    this.cursor = cursor;
    this.executor = executor;
  }

  @Override
  public int getCount() {
    return cursor.getCount();
  }

  @Override
  public int getPosition() {
    return cursor.getPosition();
  }

  @Override
  public boolean move(int offset) {
    return cursor.move(offset);
  }

  @Override
  public boolean moveToPosition(int position) {
    return cursor.moveToPosition(position);
  }

  @Override
  public boolean moveToFirst() {
    return cursor.moveToFirst();
  }

  @Override
  public boolean moveToLast() {
    return cursor.moveToLast();
  }

  @Override
  public boolean moveToNext() {
    return cursor.moveToNext();
  }

  @Override
  public boolean moveToPrevious() {
    return cursor.moveToPrevious();
  }

  @Override
  public boolean isFirst() {
    return cursor.isFirst();
  }

  @Override
  public boolean isLast() {
    return cursor.isLast();
  }

  @Override
  public boolean isBeforeFirst() {
    return cursor.isBeforeFirst();
  }

  @Override
  public boolean isAfterLast() {
    return cursor.isAfterLast();
  }

  @Override
  public int getColumnIndex(String columnName) {
    return cursor.getColumnIndex(columnName);
  }

  @Override
  public int getColumnIndexOrThrow(String columnName) throws IllegalArgumentException {
    return cursor.getColumnIndexOrThrow(columnName);
  }

  @Override
  public String getColumnName(int columnIndex) {
    return cursor.getColumnName(columnIndex);
  }

  @Override
  public String[] getColumnNames() {
    return cursor.getColumnNames();
  }

  @Override
  public int getColumnCount() {
    return cursor.getColumnCount();
  }

  @Override
  public byte[] getBlob(int columnIndex) {
    return cursor.getBlob(columnIndex);
  }

  @Override
  public String getString(int columnIndex) {
    return cursor.getString(columnIndex);
  }

  @Override
  public void copyStringToBuffer(int columnIndex, CharArrayBuffer buffer) {
    cursor.copyStringToBuffer(columnIndex, buffer);
  }

  @Override
  public short getShort(int columnIndex) {
    return cursor.getShort(columnIndex);
  }

  @Override
  public int getInt(int columnIndex) {
    return cursor.getInt(columnIndex);
  }

  @Override
  public long getLong(int columnIndex) {
    return cursor.getLong(columnIndex);
  }

  @Override
  public float getFloat(int columnIndex) {
    return cursor.getFloat(columnIndex);
  }

  @Override
  public double getDouble(int columnIndex) {
    return cursor.getDouble(columnIndex);
  }

  @TargetApi(Build.VERSION_CODES.HONEYCOMB)
  @Override
  public int getType(int columnIndex) {
    return cursor.getType(columnIndex);
  }

  @Override
  public boolean isNull(int columnIndex) {
    return cursor.isNull(columnIndex);
  }

  @Override
  @Deprecated
  public void deactivate() {
    cursor.deactivate();
  }

  @Override
  @Deprecated
  public boolean requery() {
    return cursor.requery();
  }

  @Override
  public void close() {
    // Basically close _eventually_.
    Task.call(new Callable<Void>() {
      @Override
      public Void call() throws Exception {
        cursor.close();
        return null;
      }
    }, executor);
  }

  @Override
  public boolean isClosed() {
    return cursor.isClosed();
  }

  @Override
  public void registerContentObserver(ContentObserver observer) {
    cursor.registerContentObserver(observer);
  }

  @Override
  public void unregisterContentObserver(ContentObserver observer) {
    cursor.unregisterContentObserver(observer);
  }

  @Override
  public void registerDataSetObserver(DataSetObserver observer) {
    cursor.registerDataSetObserver(observer);
  }

  @Override
  public void unregisterDataSetObserver(DataSetObserver observer) {
    cursor.unregisterDataSetObserver(observer);
  }

  @Override
  public void setNotificationUri(ContentResolver cr, Uri uri) {
    cursor.setNotificationUri(cr, uri);
  }

  @TargetApi(Build.VERSION_CODES.KITKAT)
  @Override
  public Uri getNotificationUri() {
    return cursor.getNotificationUri();
  }

  @Override
  public boolean getWantsAllOnMoveCalls() {
    return cursor.getWantsAllOnMoveCalls();
  }

  @Override
  public Bundle getExtras() {
    return cursor.getExtras();
  }

  @Override
  public Bundle respond(Bundle extras) {
    return cursor.respond(extras);
  }

  @TargetApi(Build.VERSION_CODES.M)
  @Override
  public void setExtras(Bundle bundle) {
    cursor.setExtras(bundle);
  }
}