Examples with Cursor org.h2.index.Cursor used on opensource projects

Example 11 with Cursor

use of org.h2.index.Cursor in project ignite by apache.

the class GridH2SpatialIndex method findFirstOrLast.

/**
 * {@inheritDoc}
 */
@Override
public Cursor findFirstOrLast(Session ses, boolean first) {
    Lock l = lock.readLock();
    l.lock();
    try {
        checkClosed();
        if (!first)
            throw DbException.throwInternalError("Spatial Index can only be fetch by ascending order");
        final int seg = threadLocalSegment();
        final MVRTreeMap<Long> segment = segments[seg];
        GridCursor<GridH2Row> iter = rowIterator(segment.keySet().iterator(), null);
        return new SingleRowCursor(iter.next() ? iter.get() : null);
    } catch (IgniteCheckedException e) {
        throw DbException.convert(e);
    } finally {
        l.unlock();
    }
}

Example 12 with Cursor

use of org.h2.index.Cursor in project ignite by apache.

the class H2PkHashIndex method getRowCount.

/**
 * {@inheritDoc}
 */
@Override
public long getRowCount(Session ses) {
    Cursor cursor = find(ses, null, null);
    long res = 0;
    while (cursor.next()) res++;
    return res;
}