asterix-om/src/main/java/edu/uci/ics/asterix/om/base/IACursor.java

/*
 * Copyright 2009-2011 by The Regents of the University of California
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * you may obtain a copy of the License from
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * 
 */
package edu.uci.ics.asterix.om.base;

/**
 * @author Nicola
 *         Implements a standard Cursor interface: initially, the cursor points
 *         before the beginning of the data. The first call to next() moves the
 *         cursor to the first object, if any. Subsequent calls keep moving the
 *         cursor, until next() returns false.
 */
public interface IACursor {
    public void reset();

    public boolean next(); // moves the cursor

    public IAObject get(); // returns the current object
}