org.apache.parquet.column.page.DataPageV1 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.Optional;
import org.apache.parquet.bytes.BytesInput;
import org.apache.parquet.column.Encoding;
import org.apache.parquet.column.statistics.Statistics;
public class DataPageV1 extends DataPage {
private final BytesInput bytes;
private final Statistics statistics;
private final Encoding rlEncoding;
private final Encoding dlEncoding;
private final Encoding valuesEncoding;
private final int indexRowCount;
/**
* @param bytes the bytes for this page
* @param valueCount count of values in this page
* @param uncompressedSize the uncompressed size of the page
* @param statistics of the page's values (max, min, num_null)
* @param rlEncoding the repetition level encoding for this page
* @param dlEncoding the definition level encoding for this page
* @param valuesEncoding the values encoding for this page
*/
public DataPageV1(
BytesInput bytes,
int valueCount,
int uncompressedSize,
Statistics statistics,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding) {
super(Math.toIntExact(bytes.size()), uncompressedSize, valueCount);
this.bytes = bytes;
this.statistics = statistics;
this.rlEncoding = rlEncoding;
this.dlEncoding = dlEncoding;
this.valuesEncoding = valuesEncoding;
this.indexRowCount = -1;
}
/**
* @param bytes the bytes for this page
* @param valueCount count of values in this page
* @param uncompressedSize the uncompressed size of the page
* @param firstRowIndex the index of the first row in this page
* @param rowCount the number of rows in this page
* @param statistics of the page's values (max, min, num_null)
* @param rlEncoding the repetition level encoding for this page
* @param dlEncoding the definition level encoding for this page
* @param valuesEncoding the values encoding for this page
*/
public DataPageV1(
BytesInput bytes,
int valueCount,
int uncompressedSize,
long firstRowIndex,
int rowCount,
Statistics statistics,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding) {
super(Math.toIntExact(bytes.size()), uncompressedSize, valueCount, firstRowIndex);
this.bytes = bytes;
this.statistics = statistics;
this.rlEncoding = rlEncoding;
this.dlEncoding = dlEncoding;
this.valuesEncoding = valuesEncoding;
this.indexRowCount = rowCount;
}
/**
* @return the bytes for the page
*/
public BytesInput getBytes() {
return bytes;
}
/**
* @return the statistics for this page (max, min, num_nulls)
*/
public Statistics getStatistics() {
return statistics;
}
/**
* @return the definition level encoding for this page
*/
public Encoding getDlEncoding() {
return dlEncoding;
}
/**
* @return the repetition level encoding for this page
*/
public Encoding getRlEncoding() {
return rlEncoding;
}
/**
* @return the values encoding for this page
*/
public Encoding getValueEncoding() {
return valuesEncoding;
}
@Override
public String toString() {
return "Page [bytes.size=" + bytes.size() + ", valueCount=" + getValueCount() + ", uncompressedSize="
+ getUncompressedSize() + "]";
}
@Override
public T accept(Visitor visitor) {
return visitor.visit(this);
}
@Override
public Optional getIndexRowCount() {
return indexRowCount < 0 ? Optional.empty() : Optional.of(indexRowCount);
}
}