Examples with DB org.mapdb.DB used on opensource projects

Example 11 with DB

use of org.mapdb.DB in project tdq-studio-se by Talend.

the class MapDBManager method addDBRef.

/**
 * Record one db have been used how many times
 *
 * @param filePath
 */
public void addDBRef(File filePath) {
    DB db = dbMap.get(filePath);
    if (db == null) {
        return;
    }
    cancelCloseTask(db);
    Integer refConut = dbRefCountMap.get(db);
    if (refConut == null) {
        refConut = 0;
    }
    refConut++;
    dbRefCountMap.put(db, refConut);
}

Example 12 with DB

use of org.mapdb.DB in project tdq-studio-se by Talend.

the class MapDBManager method removeDBRef.

/**
 * Reduce the times which one db be used. When the count of times is 0 we will close this db.
 *
 * @param filePath
 */
public void removeDBRef(File filePath) {
    DB db = dbMap.get(filePath);
    if (db == null) {
        return;
    }
    Integer refConut = dbRefCountMap.get(db);
    if (refConut == null) {
        return;
    }
    refConut--;
    if (refConut > 0) {
        dbRefCountMap.put(db, refConut);
    } else {
        dbRefCountMap.remove(db);
        closeDB(db, filePath);
    }
}

Example 13 with DB

use of org.mapdb.DB in project mapdb by jankotek.

the class Issue794 method test.

@Test
public void test() {
    DB db = DBMaker.memoryDB().closeOnJvmShutdown().make();
    DB.TreeMapSink<Long, DataPoint> sIds2DataPointSink = db.treeMap("ids2DataPoint", Serializer.LONG, Serializer.ELSA).valuesOutsideNodesEnable().createFromSink();
    for (long i = 0; i < limit; i++) {
        DataPoint point = new DataPoint();
        point.add("aaa");
        point.add("aaa");
        point.add("aaa");
        point.add("aaa");
        //insert 70G DataPoint entities, each filled with 5 Strings
        sIds2DataPointSink.put(i, point);
    }
    //here the error occurs
    sIds2DataPointSink.create();
    db.close();
}

Example 14 with DB

use of org.mapdb.DB in project tdq-studio-se by Talend.

the class MapDBManager method closeDB.

/**
 * If MapDB file is not exist or has been closed then this method will not do anything else will create new task to
 * close it.
 *
 * @param analysis
 */
public void closeDB(File filePath) {
    DB db = dbMap.get(filePath);
    closeDB(db, filePath);
}

Example 15 with DB

use of org.mapdb.DB in project tdq-studio-se by Talend.

the class MapDBManager method deleteDB.

/**
 * Delete mapDB file
 *
 * @param analysis
 */
public void deleteDB(Analysis analysis) {
    File mapDBFile = getMapDBFile(analysis);
    DB db = this.getDB(mapDBFile);
    // if db is in used close it first
    if (db != null) {
        this.removeDB(mapDBFile);
        dbRefCountMap.remove(db);
        db.close();
        while (!db.isClosed()) {
            try {
                Thread.currentThread().wait(1000);
            } catch (InterruptedException e) {
            }
        }
    }
    // delete data file and index file
    if (mapDBFile.exists()) {
        mapDBFile.delete();
        new File(mapDBFile.getAbsolutePath() + StoreDirect.DATA_FILE_EXT).delete();
    }
}