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Code Issues Releases Wiki Activity

Prepare tokenizer option

This commit is contained in:
M66B 2022-09-29 07:13:25 +02:00
parent 43da662373
commit 4648528faa
1 changed files with 13 additions and 3 deletions
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16
app/src/main/java/eu/faircode/email/Fts4DbHelper.java
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@ -22,11 +22,15 @@ package eu.faircode.email;
import android.annotation.SuppressLint;
import android.content.ContentValues;
import android.content.Context;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.text.TextUtils;
import androidx.preference.PreferenceManager;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
@ -63,6 +67,13 @@ public class Fts4DbHelper extends SQLiteOpenHelper {
@Override
public void onCreate(SQLiteDatabase db) {
Log.i("FTS create");
// https://www.sqlite.org/fts3.html#tokenizer
// https://unicode.org/reports/tr29/
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean unicode61 = prefs.getBoolean("unicode61", BuildConfig.DEBUG);
String tokenizer = (unicode61 ? "tokenize=unicode61 \"remove_diacritics=0\"" : null);
db.execSQL("CREATE VIRTUAL TABLE `message`" +
" USING fts4" +
" (`account`" +
@ -75,9 +86,8 @@ public class Fts4DbHelper extends SQLiteOpenHelper {
", `notes`" +
", notindexed=`account`" +
", notindexed=`folder`" +
", notindexed=`time`)");
// https://www.sqlite.org/fts3.html#tokenizer
// https://unicode.org/reports/tr29/
", notindexed=`time`" +
(tokenizer == null ? "" : ", " + tokenizer) + ")");
// https://www.sqlite.org/fts3.html#fts4aux
db.execSQL("CREATE VIRTUAL TABLE message_terms USING fts4aux('message');");