Android Open Source - InMemoryDb Asynchronous Database

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License

The source code is released under:

Apache License

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Java Source Code

package org.gawst.asyncdb;
/*from   w w  w  . j ava2 s. c  om*/
import android.database.sqlite.SQLiteOpenHelper;

import java.util.Collection;

/**
 * A {@link SQLiteOpenHelper} class with a worker thread for all disk work. Elements are not stored in memory.
 * 
 * @param <E> Type of Objects that are stored in the main table
 */
public abstract class AsynchronousDatabase<E, INSERT_ID> extends AsynchronousDbHelper<E, INSERT_ID> {

  /**
   * Constructor for the SQLite database with a worker thread
   * @param db The already created {@link android.database.sqlite.SQLiteOpenHelper} to use as storage
   * @param name Database name for logs
   * @param logger The {@link Logger} to use for all logs (can be null for the default Android logs)
   */
  public AsynchronousDatabase(DataSource<E, INSERT_ID> db, String name, Logger logger) {
    super(db, name, logger, null);
  }

  @Override
  public final void addItemInMemory(E item) {
    // do nothing
  }

  @Override
  protected final boolean shouldReloadAllData() {
    return false;
  }

  @Override
  protected boolean notifyOnSchedule() {
    return false;
  }

  /**
   * Add a new element in the database (asynchronous)
   * <p>Helper call for {@link AsynchronousDbHelper#scheduleAddOperation(Object, org.gawst.asyncdb.purge.PurgeHandler)}
   * <p>If adding failed {@link AsynchronousDbErrorHandler#onAddItemFailed(AsynchronousDbHelper, Object, android.content.ContentValues, Throwable) AsynchronousDbErrorHandler.onAddItemFailed()} will be called
   * @param item to add
   * @see AsynchronousDbHelper#scheduleAddOperation(Object, org.gawst.asyncdb.purge.PurgeHandler)
   */
  public void add(E item) {
    scheduleAddOperation(item);
  }

  /**
   * Add new elements in the database (asynchronous)
   * <p>Helper call for {@link AsynchronousDbHelper#scheduleAddOperation(java.util.Collection, org.gawst.asyncdb.purge.PurgeHandler)}
   * <p>{@link AsynchronousDbErrorHandler#onAddItemFailed(AsynchronousDbHelper, Object, android.content.ContentValues, Throwable) AsynchronousDbErrorHandler.onAddItemFailed()} will be called for each addition failure
   * @param items to add
   * @see AsynchronousDbHelper#scheduleAddOperation(java.util.Collection, org.gawst.asyncdb.purge.PurgeHandler)
   */
  public void addAll(Collection<E> items) {
    scheduleAddOperation(items);
  }

  /**
   * Update an element in the database
   * <p>Helper call for {@link #scheduleUpdateOperation(E)}
   * @param item to update
   * @see #scheduleUpdateOperation(E)
   */
  public void update(E item) {
    scheduleUpdateOperation(item);
  }

  /**
   * Remove an element from the database (asynchronous)
   * <p>Helper call for {@link #scheduleRemoveOperation(E)}
   * <p>If the removal fails {@link AsynchronousDbErrorHandler#onRemoveItemFailed(AsynchronousDbHelper, Object, Throwable) AsynchronousDbErrorHandler.onRemoveItemFailed()} will be called
   * @param item to remove
   * @see #scheduleRemoveOperation(E)
   */
  public void remove(E item) {
    scheduleRemoveOperation(item);
  }

}

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