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Get rid of the unused ID in the DB, this could help in:

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* reducing the used space
* reducing the time needed for inserts
This commit is contained in:
Daniele Gobbetti 2015-06-04 21:37:48 +02:00
parent 7ad38c5e1a
commit fc374881c5
1 changed files with 20 additions and 8 deletions
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28
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/database/ActivityDatabaseHandler.java
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@ -12,13 +12,12 @@ import nodomain.freeyourgadget.gadgetbridge.GBActivitySample;
public class ActivityDatabaseHandler extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 3;
private static final int DATABASE_VERSION = 4;
private static final String DATABASE_NAME = "ActivityDatabase";
private static final String TABLE_GBACTIVITYSAMPLES = "GBActivitySamples";
private static final String KEY_ID = "id";
private static final String KEY_TIMESTAMP = "timestamp";
private static final String KEY_PROVIDER = "provider";
private static final String KEY_INTENSITY = "intensity";
@ -31,22 +30,35 @@ public class ActivityDatabaseHandler extends SQLiteOpenHelper {
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_GBACTIVITYSAMPLES_TABLE = "CREATE TABLE " + TABLE_GBACTIVITYSAMPLES + "("
+ KEY_ID + " INTEGER PRIMARY KEY,"
String CREATE_GBACTIVITYSAMPLES_TABLE = "CREATE TABLE " + TABLE_GBACTIVITYSAMPLES + " ("
+ KEY_TIMESTAMP + " INT,"
+ KEY_PROVIDER + " TINYINT,"
+ KEY_INTENSITY + " SMALLINT,"
+ KEY_STEPS + " TINYINT,"
+ KEY_TYPE + " TINYINT,"
+ " UNIQUE (" + KEY_TIMESTAMP + "," + KEY_PROVIDER + ") ON CONFLICT REPLACE)";
+ " PRIMARY_KEY (" + KEY_TIMESTAMP + "," + KEY_PROVIDER + ") ON CONFLICT REPLACE)";
db.execSQL(CREATE_GBACTIVITYSAMPLES_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
//FIXME: do not just recreate
db.execSQL("DROP TABLE IF EXISTS " + TABLE_GBACTIVITYSAMPLES);
onCreate(db);
if (newVersion == 4 && oldVersion == 3) {
String CREATE_NEW_GBACTIVITYSAMPLES_TABLE = "CREATE TABLE NEW ("
+ KEY_TIMESTAMP + " INT,"
+ KEY_PROVIDER + " TINYINT,"
+ KEY_INTENSITY + " SMALLINT,"
+ KEY_STEPS + " TINYINT,"
+ KEY_TYPE + " TINYINT,"
+ " PRIMARY KEY (" + KEY_TIMESTAMP + "," + KEY_PROVIDER + ") ON CONFLICT REPLACE)";
db.execSQL(CREATE_NEW_GBACTIVITYSAMPLES_TABLE);
db.execSQL("insert into NEW select timestamp,provider,intensity,steps,type from "+ TABLE_GBACTIVITYSAMPLES+";");
db.execSQL("Drop table "+TABLE_GBACTIVITYSAMPLES+";");
db.execSQL("alter table NEW RENAME TO " + TABLE_GBACTIVITYSAMPLES + ";");
} else {
//FIXME: do not just recreate
db.execSQL("DROP TABLE IF EXISTS " + TABLE_GBACTIVITYSAMPLES);
onCreate(db);
}
}