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package org.fox.ttrss.util;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.provider.BaseColumns;
public class DatabaseHelper extends SQLiteOpenHelper {
@SuppressWarnings("unused")
private final String TAG = this.getClass().getSimpleName();
public static final String DATABASE_NAME = "OfflineStorage.db";
public static final int DATABASE_VERSION = 3;
public DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("DROP TABLE IF EXISTS categories;");
db.execSQL("DROP TABLE IF EXISTS feeds;");
db.execSQL("DROP TABLE IF EXISTS articles;");
db.execSQL("DROP VIEW IF EXISTS feeds_unread;");
db.execSQL("DROP TRIGGER IF EXISTS articles_set_modified;");
db.execSQL("CREATE TABLE IF NOT EXISTS feeds (" +
BaseColumns._ID + " INTEGER PRIMARY KEY AUTOINCREMENT," +
"feed_url TEXT, " +
"title TEXT, " +
"has_icon BOOLEAN, " +
"cat_id INTEGER" +
");");
db.execSQL("CREATE TABLE IF NOT EXISTS categories (" +
BaseColumns._ID + " INTEGER PRIMARY KEY AUTOINCREMENT," +
"title TEXT" +
");");
db.execSQL("CREATE TABLE IF NOT EXISTS articles (" +
BaseColumns._ID + " INTEGER PRIMARY KEY AUTOINCREMENT," +
"unread BOOLEAN, " +
"marked BOOLEAN, " +
"published BOOLEAN, " +
"updated INTEGER, " +
"is_updated BOOLEAN, " +
"title TEXT, " +
"link TEXT, " +
"feed_id INTEGER, " +
"tags TEXT, " +
"content TEXT, " +
"selected BOOLEAN, " +
"modified BOOLEAN" +
");");
db.execSQL("CREATE TRIGGER articles_set_modified UPDATE OF marked, published, unread ON articles " +
"BEGIN " +
" UPDATE articles SET modified = 1 WHERE " + BaseColumns._ID + " = " + "OLD." + BaseColumns._ID + "; " +
"END;");
db.execSQL("CREATE VIEW feeds_unread AS SELECT feeds."+BaseColumns._ID+" AS "+BaseColumns._ID+", " +
"feeds.title AS title, " +
"SUM(articles.unread) AS unread FROM feeds " +
"LEFT JOIN articles ON (articles.feed_id = feeds."+BaseColumns._ID+") " +
"GROUP BY feeds."+BaseColumns._ID+", feeds.title;");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
onCreate(db);
}
}
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