90 lines
4.7 KiB
Java
90 lines
4.7 KiB
Java
package org.thoughtcrime.securesms.database;
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import android.content.Context;
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import android.support.annotation.NonNull;
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import android.util.Log;
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import net.sqlcipher.Cursor;
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import net.sqlcipher.database.SQLiteDatabase;
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import org.thoughtcrime.securesms.database.helpers.SQLCipherOpenHelper;
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/**
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* Contains all databases necessary for full-text search (FTS).
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*/
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public class SearchDatabase extends Database {
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public static final String SMS_FTS_TABLE_NAME = "sms_fts";
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public static final String MMS_FTS_TABLE_NAME = "mms_fts";
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public static final String ID = "rowid";
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public static final String BODY = MmsSmsColumns.BODY;
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public static final String RANK = "rank";
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public static final String SNIPPET = "snippet";
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public static final String[] CREATE_TABLE = {
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"CREATE VIRTUAL TABLE " + SMS_FTS_TABLE_NAME + " USING fts5(" + BODY + ", content=" + SmsDatabase.TABLE_NAME + ", content_rowid=" + SmsDatabase.ID + ");",
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"CREATE TRIGGER sms_ai AFTER INSERT ON " + SmsDatabase.TABLE_NAME + " BEGIN\n" +
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" INSERT INTO " + SMS_FTS_TABLE_NAME + "(" + ID + ", " + BODY + ") VALUES (new." + SmsDatabase.ID + ", new." + SmsDatabase.BODY + ");\n" +
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"END;\n",
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"CREATE TRIGGER sms_ad AFTER DELETE ON " + SmsDatabase.TABLE_NAME + " BEGIN\n" +
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" INSERT INTO " + SMS_FTS_TABLE_NAME + "(" + SMS_FTS_TABLE_NAME + ", " + ID + ", " + BODY + ") VALUES('delete', old." + SmsDatabase.ID + ", old." + SmsDatabase.BODY + ");\n" +
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"END;\n",
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"CREATE TRIGGER sms_au AFTER UPDATE ON " + SmsDatabase.TABLE_NAME + " BEGIN\n" +
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" INSERT INTO " + SMS_FTS_TABLE_NAME + "(" + SMS_FTS_TABLE_NAME + ", " + ID + ", " + BODY + ") VALUES('delete', old." + SmsDatabase.ID + ", old." + SmsDatabase.BODY + ");\n" +
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" INSERT INTO " + SMS_FTS_TABLE_NAME + "(" + ID + ", " + BODY + ") VALUES(new." + SmsDatabase.ID + ", new." + SmsDatabase.BODY + ");\n" +
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"END;",
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"CREATE VIRTUAL TABLE " + MMS_FTS_TABLE_NAME + " USING fts5(" + BODY + ", content=" + MmsDatabase.TABLE_NAME + ", content_rowid=" + MmsDatabase.ID + ");",
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"CREATE TRIGGER mms_ai AFTER INSERT ON " + MmsDatabase.TABLE_NAME + " BEGIN\n" +
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" INSERT INTO " + MMS_FTS_TABLE_NAME + "(" + ID + ", " + BODY + ") VALUES (new." + MmsDatabase.ID + ", new." + MmsDatabase.BODY + ");\n" +
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"END;\n",
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"CREATE TRIGGER mms_ad AFTER DELETE ON " + MmsDatabase.TABLE_NAME + " BEGIN\n" +
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" INSERT INTO " + MMS_FTS_TABLE_NAME + "(" + MMS_FTS_TABLE_NAME + ", " + ID + ", " + BODY + ") VALUES('delete', old." + MmsDatabase.ID + ", old." + MmsDatabase.BODY + ");\n" +
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"END;\n",
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"CREATE TRIGGER mms_au AFTER UPDATE ON " + MmsDatabase.TABLE_NAME + " BEGIN\n" +
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" INSERT INTO " + MMS_FTS_TABLE_NAME + "(" + MMS_FTS_TABLE_NAME + ", " + ID + ", " + BODY + ") VALUES('delete', old." + MmsDatabase.ID + ", old." + MmsDatabase.BODY + ");\n" +
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" INSERT INTO " + MMS_FTS_TABLE_NAME + "(" + ID + ", " + BODY + ") VALUES (new." + MmsDatabase.ID + ", new." + MmsDatabase.BODY + ");\n" +
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"END;"
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};
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private static final String MESSAGES_QUERY =
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"SELECT " +
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MmsSmsColumns.ADDRESS + ", " +
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"snippet(" + SMS_FTS_TABLE_NAME + ", -1, '', '', '...', 7) AS " + SNIPPET + ", " +
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SmsDatabase.DATE_RECEIVED + " AS " + MmsSmsColumns.NORMALIZED_DATE_RECEIVED + ", " +
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MmsSmsColumns.THREAD_ID + ", " +
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"bm25(" + SMS_FTS_TABLE_NAME + ") AS " + RANK + " " +
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"FROM " + SmsDatabase.TABLE_NAME + " " +
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"INNER JOIN " + SMS_FTS_TABLE_NAME + " ON " + SMS_FTS_TABLE_NAME + "." + ID + " = " + SmsDatabase.TABLE_NAME + "." + SmsDatabase.ID + " " +
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"WHERE " + SMS_FTS_TABLE_NAME + " MATCH ? " +
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"UNION ALL " +
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"SELECT " +
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MmsSmsColumns.ADDRESS + ", " +
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"snippet(" + MMS_FTS_TABLE_NAME + ", -1, '', '', '...', 7) AS " + SNIPPET + ", " +
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MmsDatabase.DATE_RECEIVED + " AS " + MmsSmsColumns.NORMALIZED_DATE_RECEIVED + ", " +
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MmsSmsColumns.THREAD_ID + ", " +
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"bm25(" + MMS_FTS_TABLE_NAME + ") AS " + RANK + " " +
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"FROM " + MmsDatabase.TABLE_NAME + " " +
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"INNER JOIN " + MMS_FTS_TABLE_NAME + " ON " + MMS_FTS_TABLE_NAME + "." + ID + " = " + MmsDatabase.TABLE_NAME + "." + MmsDatabase.ID + " " +
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"WHERE " + MMS_FTS_TABLE_NAME + " MATCH ? " +
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"ORDER BY rank " +
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"LIMIT 500";
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public SearchDatabase(@NonNull Context context, @NonNull SQLCipherOpenHelper databaseHelper) {
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super(context, databaseHelper);
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}
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public Cursor queryMessages(@NonNull String query) {
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SQLiteDatabase db = databaseHelper.getReadableDatabase();
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String prefixQuery = query + '*';
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return db.rawQuery(MESSAGES_QUERY, new String[] { prefixQuery, prefixQuery });
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}
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}
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