Package org.h2.store

Examples of org.h2.store.FileLock.lock()

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        File f = new File(getFile());
        f.delete();
        f.createNewFile();
        f.setLastModified(System.currentTimeMillis() + 10000);
        FileLock lock = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
        lock.lock(FileLock.LOCK_FILE);
        lock.unlock();
    }

    private void testSimple() {
        FileLock lock1 = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
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        createClassProxy(FileLock.class);
        assertThrows(ErrorCode.DATABASE_ALREADY_OPEN_1, lock2).
                lock(FileLock.LOCK_FILE);
        lock1.unlock();
        lock2 = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
        lock2.lock(FileLock.LOCK_FILE);
        lock2.unlock();
    }

    private void test(boolean allowSocketsLock) throws Exception {
        int threadCount = getSize(3, 5);
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    public void run() {
        FileLock lock = null;
        while (!stop) {
            lock = new FileLock(new TraceSystem(null), getFile(), 100);
            try {
                lock.lock(allowSockets ? FileLock.LOCK_SOCKET : FileLock.LOCK_FILE);
                base.trace(lock + " locked");
                locks++;
                if (locks > 1) {
                    System.err.println("ERROR! LOCKS=" + locks + " sockets=" + allowSockets);
                    stop = true;
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        System.err.println("ERROR: " + s + " " + e.toString() + " ------------------------------");
        e.printStackTrace();
        try {
            TraceSystem ts = new TraceSystem(null);
            FileLock lock = new FileLock(ts, "error.lock", 1000);
            lock.lock(FileLock.LOCK_FILE);
            FileWriter fw = new FileWriter("error.txt", true);
            PrintWriter pw = new PrintWriter(fw);
            e.printStackTrace(pw);
            pw.close();
            fw.close();
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        session.commit(true);
        Database db = session.getDatabase();
        boolean persistent = db.isPersistent();
        Table table = getSchema().getTableOrView(session, tableName);
        session.getUser().checkRight(table, Right.ALL);
        table.lock(session, true, true);
        if (!table.isPersistIndexes()) {
            persistent = false;
        }
        int id = getObjectId();
        if (indexName == null) {
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                return 0;
            }
            throw DbException.get(ErrorCode.CONSTRAINT_ALREADY_EXISTS_1, constraintName);
        }
        session.getUser().checkRight(table, Right.ALL);
        table.lock(session, true, true);
        Constraint constraint;
        switch (type) {
        case CommandInterface.ALTER_TABLE_ADD_CONSTRAINT_PRIMARY_KEY: {
            IndexColumn.mapColumns(indexColumns, table);
            index = table.findPrimaryKey();
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        tableFilter.startQuery(session);
        tableFilter.reset();
        Table table = tableFilter.getTable();
        session.getUser().checkRight(table, Right.DELETE);
        table.fire(session, Trigger.DELETE, true);
        table.lock(session, true, false);
        RowList rows = new RowList(session);
        int limitRows = -1;
        if (limitExpr != null) {
            Value v = limitExpr.getValue(session);
            if (v != ValueNull.INSTANCE) {
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            }
            throw DbException.get(ErrorCode.CONSTRAINT_ALREADY_EXISTS_1, constraintName);
        }
        session.getUser().checkRight(table, Right.ALL);
        db.lockMeta(session);
        table.lock(session, true, true);
        Constraint constraint;
        switch (type) {
        case CommandInterface.ALTER_TABLE_ADD_CONSTRAINT_PRIMARY_KEY: {
            IndexColumn.mapColumns(indexColumns, table);
            index = table.findPrimaryKey();
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        }
    }

    private boolean existsRow(Session session, Index searchIndex, SearchRow check, Row excluding) {
        Table searchTable = searchIndex.getTable();
        searchTable.lock(session, false, false);
        Cursor cursor = searchIndex.find(session, check, check);
        while (cursor.next()) {
            SearchRow found;
            found = cursor.getSearchRow();
            if (excluding != null && found.getKey() == excluding.getKey()) {
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        RowList rows = new RowList(session);
        try {
            Table table = tableFilter.getTable();
            session.getUser().checkRight(table, Right.UPDATE);
            table.fire(session, Trigger.UPDATE, true);
            table.lock(session, true, false);
            int columnCount = table.getColumns().length;
            // get the old rows, compute the new rows
            setCurrentRowNumber(0);
            int count = 0;
            Column[] columns = table.getColumns();
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