com.deange.textfaker.content.ormlite.OrmLiteLoader.java Source code

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Here is the source code for com.deange.textfaker.content.ormlite.OrmLiteLoader.java

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/*
 * Copyright 2013 Christian De Angelis
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.deange.textfaker.content.ormlite;

import android.content.Context;
import android.database.Cursor;
import android.support.v4.content.AsyncTaskLoader;

import com.deange.textfaker.content.ContentHelper;
import com.deange.textfaker.model.BaseModel;
import com.j256.ormlite.android.AndroidDatabaseResults;
import com.j256.ormlite.dao.CloseableIterator;
import com.j256.ormlite.dao.Dao;
import com.j256.ormlite.stmt.QueryBuilder;

import java.sql.SQLException;

public class OrmLiteLoader<T extends BaseModel> extends AsyncTaskLoader<Cursor> {

    final QueryBuilder<T, Long> mQueryBuilder;
    final Class<T> mClazz;

    public OrmLiteLoader(final Context context, final Class<T> clazz, final QueryBuilder<T, Long> queryBuilder) {
        super(context);
        mClazz = clazz;
        mQueryBuilder = queryBuilder;
    }

    @Override
    protected void onStartLoading() {
        forceLoad();
    }

    @Override
    protected void onStopLoading() {
        cancelLoad();
    }

    @Override
    public Cursor loadInBackground() {

        Cursor cursor = null;
        CloseableIterator<T> iterator = null;

        if ((mQueryBuilder != null) && (mClazz != null)) {
            try {
                final Dao<T, Long> dao = ContentHelper.getInstance(getContext()).getDao(mClazz);

                iterator = dao.iterator(mQueryBuilder.prepare());
                final AndroidDatabaseResults results = (AndroidDatabaseResults) iterator.getRawResults();
                cursor = results.getRawCursor();

            } catch (final SQLException e) {

            }
        }

        return cursor;
    }

}