org.apache.parquet.column.page.Page Maven / Gradle / Ivy
/*
* 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.parquet.column.page;
import java.util.OptionalInt;
/**
* one page in a chunk
*/
abstract public class Page {
private final int compressedSize;
private final int uncompressedSize;
Page(int compressedSize, int uncompressedSize) {
super();
this.compressedSize = compressedSize;
this.uncompressedSize = uncompressedSize;
}
public int getCompressedSize() {
return compressedSize;
}
/**
* @return the uncompressed size of the page when the bytes are compressed
*/
public int getUncompressedSize() {
return uncompressedSize;
}
// Note: the following field is only used for testing purposes and are NOT used in checksum
// verification. There crc value here will merely be a copy of the actual crc field read in
// ParquetFileReader.Chunk.readAllPages()
private OptionalInt crc = OptionalInt.empty();
// Visible for testing
public void setCrc(int crc) {
this.crc = OptionalInt.of(crc);
}
// Visible for testing
public OptionalInt getCrc() {
return crc;
}
}