mirror of https://github.com/M66B/FairEmail.git
M66B
5 years ago
parent
0392587d4f
commit
cc7cd14a47
@ -0,0 +1,103 @@
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package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2020 by Marcel Bokhorst (M66B)
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*/
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.Cursor;
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import android.text.TextUtils;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import javax.mail.Address;
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import io.requery.android.database.sqlite.SQLiteDatabase;
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import io.requery.android.database.sqlite.SQLiteOpenHelper;
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public class FtsDbHelper extends SQLiteOpenHelper {
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// https://www.sqlite.org/fts3.html
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private static final int DATABASE_VERSION = 1;
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private static final String DATABASE_NAME = "fts.db";
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public FtsDbHelper(Context context) {
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super(context, DATABASE_NAME, null, DATABASE_VERSION);
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}
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@Override
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public void onCreate(SQLiteDatabase db) {
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Log.i("FTS create");
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db.execSQL("CREATE VIRTUAL TABLE `message` USING fts4(`time`, `address`, `subject`, `keyword`, `text`)");
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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// Do nothing
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}
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void insert(EntityMessage message, String text) {
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Log.i("FTS insert id=" + message.id + " subject=" + message.subject + " text=" + text);
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List<Address> address = new ArrayList<>();
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if (message.from != null)
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address.addAll(Arrays.asList(message.from));
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if (message.to != null)
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address.addAll(Arrays.asList(message.to));
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if (message.cc != null)
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address.addAll(Arrays.asList(message.cc));
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try (SQLiteDatabase db = getWritableDatabase()) {
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try {
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db.beginTransaction();
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db.delete("message", "docid = ?", new Object[]{message.id});
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ContentValues cv = new ContentValues();
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cv.put("docid", message.id);
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cv.put("time", message.received);
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cv.put("address", MessageHelper.formatAddresses(address.toArray(new Address[0]), true, false));
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cv.put("subject", message.subject == null ? "" : message.subject);
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cv.put("keyword", TextUtils.join(", ", message.keywords));
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cv.put("text", text);
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db.insert("message", SQLiteDatabase.CONFLICT_FAIL, cv);
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db.setTransactionSuccessful();
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} finally {
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db.endTransaction();
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}
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}
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}
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List<Long> match(String search) {
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Log.i("FTS search=" + search);
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List<Long> result = new ArrayList<>();
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try (SQLiteDatabase db = getReadableDatabase()) {
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try (Cursor cursor = db.query(
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"message", new String[]{"docid"},
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"message MATCH ?", new Object[]{search},
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null, null, "time DESC", null)) {
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while (cursor != null && cursor.moveToNext())
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result.add(cursor.getLong(0));
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}
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}
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Log.i("FTS result=" + result.size());
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return result;
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}
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}
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