| /** |
| * 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.orc.impl; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hive.ql.exec.vector.ColumnVector; |
| |
| /** |
| * Interface for reading integers. |
| */ |
| public interface IntegerReader { |
| |
| /** |
| * Seek to the position provided by index. |
| * @param index |
| * @throws IOException |
| */ |
| void seek(PositionProvider index) throws IOException; |
| |
| /** |
| * Skip number of specified rows. |
| * @param numValues |
| * @throws IOException |
| */ |
| void skip(long numValues) throws IOException; |
| |
| /** |
| * Check if there are any more values left. |
| * @return |
| * @throws IOException |
| */ |
| boolean hasNext() throws IOException; |
| |
| /** |
| * Return the next available value. |
| * @return |
| * @throws IOException |
| */ |
| long next() throws IOException; |
| |
| /** |
| * Return the next available vector for values. |
| * @param column the column being read |
| * @param data the vector to read into |
| * @param length the number of numbers to read |
| * @throws IOException |
| */ |
| void nextVector(ColumnVector column, |
| long[] data, |
| int length |
| ) throws IOException; |
| |
| /** |
| * Return the next available vector for values. Does not change the |
| * value of column.isRepeating. |
| * @param column the column being read |
| * @param data the vector to read into |
| * @param length the number of numbers to read |
| * @throws IOException |
| */ |
| void nextVector(ColumnVector column, |
| int[] data, |
| int length |
| ) throws IOException; |
| } |