/**
 * Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * 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 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 com.linkedin.pinot.core.common;

import com.linkedin.pinot.common.data.FieldSpec.DataType;

/**
 *
 *
 */
public interface BlockValIterator {

  boolean skipTo(int docId);

  int currentDocId();

  boolean reset();

  boolean next();

  /**
   * Use it only when you want to check if there is next but dont want to move
   * the cursor. If you plan to move the cursor, use next for better performance
   *
   * @return
   */
  boolean hasNext();

  int size();

  DataType getValueType();
}