Examples with Value com.cinchapi.concourse.server.model.Value used on opensource projects

Example 11 with Value

use of com.cinchapi.concourse.server.model.Value in project concourse by cinchapi.

the class Database method chronologize.

@Override
public Map<Long, Set<TObject>> chronologize(String key, long record, long start, long end) {
    Identifier L = Identifier.of(record);
    Text K = Text.wrapCached(key);
    TableRecord table = getTableRecord(L);
    Map<Long, Set<Value>> data = table.chronologize(K, start, end);
    return Transformers.transformMapSet(data, Functions.identity(), Value::getTObject);
}

Example 12 with Value

use of com.cinchapi.concourse.server.model.Value in project concourse by cinchapi.

the class AtomicOperation method grabLocks.

/**
 * Check each one of the {@link #intentions} against the
 * {@link #durable} and grab the appropriate locks along the way. This
 * method will return {@code true} if all expectations are met and all
 * necessary locks are grabbed. Otherwise it will return {@code false}, in
 * which case this operation should be aborted immediately.
 *
 * @return {@code true} if all expectations are met and all necessary locks
 *         are grabbed.
 */
private boolean grabLocks() {
    if (isReadOnly()) {
        return true;
    } else {
        // NOTE: If we can't grab a lock immediately because it is held by
        // someone else, then we must fail immediately because the
        // AtomicOperation can't properly commit.
        locks = Maps.newHashMap();
        try {
            // intentions
            for (Token token : writes2Lock) {
                if (notifiedAboutVersionChange) {
                    return false;
                }
                LockType type;
                if (token instanceof RangeToken) {
                    RangeToken rangeToken = (RangeToken) token;
                    if (!rangeReads2Lock.isEmpty(rangeToken.getKey())) {
                        Range<Value> containing = rangeReads2Lock.get(rangeToken.getKey(), rangeToken.getValues()[0]);
                        if (containing != null) {
                            rangeReads2Lock.remove(rangeToken.getKey(), containing);
                            Iterable<Range<Value>> xor = Ranges.xor(Range.singleton(rangeToken.getValues()[0]), containing);
                            for (Range<Value> range : xor) {
                                rangeReads2Lock.put(rangeToken.getKey(), range);
                            }
                        }
                    }
                    type = LockType.RANGE_WRITE;
                } else {
                    reads2Lock.remove(token);
                    type = LockType.WRITE;
                }
                LockDescription lock = LockDescription.forToken(token, lockService, rangeLockService, type);
                if (lock.getLock().tryLock()) {
                    locks.put(lock.getToken(), lock);
                } else {
                    return false;
                }
            }
            // grabbed previously.
            for (Token token : reads2Lock) {
                if (notifiedAboutVersionChange) {
                    return false;
                }
                LockDescription lock = LockDescription.forToken(token, lockService, rangeLockService, LockType.READ);
                if (lock.getLock().tryLock()) {
                    locks.put(lock.getToken(), lock);
                } else {
                    return false;
                }
            }
            // grabbed previously.
            for (Entry<Text, RangeSet<Value>> entry : rangeReads2Lock.ranges.entrySet()) {
                /* (Authorized) */
                if (notifiedAboutVersionChange) {
                    return false;
                }
                Text key = entry.getKey();
                for (Range<Value> range : entry.getValue().asRanges()) {
                    RangeToken rangeToken = Ranges.convertToRangeToken(key, range);
                    LockDescription lock = LockDescription.forToken(rangeToken, lockService, rangeLockService, LockType.RANGE_READ);
                    if (lock.getLock().tryLock()) {
                        locks.put(lock.getToken(), lock);
                    } else {
                        return false;
                    }
                }
            }
        } catch (NullPointerException e) {
            // abort immediately which means that #locks will become null.
            return false;
        }
        return true;
    }
}

Example 13 with Value

use of com.cinchapi.concourse.server.model.Value in project concourse by cinchapi.

the class AtomicOperation method browse.

@Override
public final Map<TObject, Set<Long>> browse(String key) throws AtomicStateException {
    checkState();
    Text key0 = Text.wrapCached(key);
    RangeToken rangeToken = RangeToken.forReading(key0, Operator.BETWEEN, Value.NEGATIVE_INFINITY, Value.POSITIVE_INFINITY);
    source.addVersionChangeListener(rangeToken, this);
    Iterable<Range<Value>> ranges = RangeTokens.convertToRange(rangeToken);
    for (Range<Value> range : ranges) {
        rangeReads2Lock.put(key0, range);
    }
    return super.browse(key);
}

Example 14 with Value

use of com.cinchapi.concourse.server.model.Value in project concourse by cinchapi.

the class AtomicOperation method explore.

@Override
public Map<Long, Set<TObject>> explore(String key, Aliases aliases) {
    checkState();
    Operator operator = aliases.operator();
    TObject[] values = aliases.values();
    Text key0 = Text.wrapCached(key);
    RangeToken rangeToken = RangeToken.forReading(key0, operator, Transformers.transformArray(values, Value::wrap, Value.class));
    source.addVersionChangeListener(rangeToken, this);
    Iterable<Range<Value>> ranges = RangeTokens.convertToRange(rangeToken);
    for (Range<Value> range : ranges) {
        rangeReads2Lock.put(key0, range);
    }
    return super.explore(key, aliases);
}

Example 15 with Value

use of com.cinchapi.concourse.server.model.Value in project concourse by cinchapi.

the class RangeLockService method isRangeBlocked.

/**
 * Return {@code true} if an attempt to used {@code token} for a
 * {@code type} lock is range blocked. Range blocking occurs when there is
 * another READ or WRITE happening such that allowing the proposed operation
 * to proceed could lead to inconsistent results (i.e. I want to write X but
 * there is a READ trying to find all values less than Y).
 *
 * @param type
 * @param token
 * @return {@code true} if range blocked
 */
protected final boolean isRangeBlocked(LockType type, RangeToken token) {
    Value value = token.getValues()[0];
    if (type == LockType.READ) {
        Preconditions.checkArgument(token.getOperator() != null);
        switch(token.getOperator()) {
            case EQUALS:
                return info.writes(token.getKey()).contains(value);
            case NOT_EQUALS:
                return info.writes(token.getKey()).size() > 1 || (info.writes(token.getKey()).size() == 1 && !info.writes(token.getKey()).contains(value));
            default:
                Iterator<Value> it = info.writes(token.getKey()).iterator();
                while (it.hasNext()) {
                    Iterable<Range<Value>> ranges = RangeTokens.convertToRange(token);
                    Value current = it.next();
                    Range<Value> point = Range.singleton(current);
                    for (Range<Value> range : ranges) {
                        RangeReadWriteLock lock = null;
                        if (range.isConnected(point) && !range.intersection(point).isEmpty() && (lock = locks.get(RangeToken.forWriting(token.getKey(), current))) != null && !lock.isWriteLockedByCurrentThread()) {
                            return true;
                        }
                    }
                }
                return false;
        }
    } else {
        // X)
        return info.reads(token.getKey()).contains(value);
    }
}