content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 at
   *
   *   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.
  /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 at
   *
   *   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 org.apache.asterix.runtime.operators.joins.interval.utils.memory;
  
  import org.apache.hyracks.api.comm.IFrameTupleAccessor;
  
  /**
   * Represents an index cursor. The expected use
   * cursor = new cursor();
   * while(predicate){
   * -cursor.reset()
   * -while (cursor.hasNext()){
   * --cursor.next()
   * -}
   * }
   */
  public interface ITupleCursor<T> {
  
      /**
       * Checks if the Current Tuple Index Exists
       *
       * @return
       */
      boolean hasNext();
  
      /**
       * Increments the Tuple Index
       *
       */
      void next();
  
      /**
       * Used in FrameTupleCursor to reset the accessor to the buffer
       *
       * @param param
       */
      void reset(T param);
  
      /**
       * Return the accessor
       *
       * @return
       */
      IFrameTupleAccessor getAccessor();
  
      /**
       * Return the tuple id.
       *
       * @return
       */
      int getTupleId();
  }
  