org.apache.parquet.format.MetadataValidator 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.format;
/**
* Utility class to validate different types of Parquet metadata (e.g. footer, page headers etc.).
*/
public class MetadataValidator {
static PageHeader validate(PageHeader pageHeader) {
int compressed_page_size = pageHeader.getCompressed_page_size();
validateValue(compressed_page_size >= 0,
String.format("Compressed page size must not be negative but was: %s", compressed_page_size));
return pageHeader;
}
private static void validateValue(boolean valid, String message) {
if (!valid) {
throw new InvalidParquetMetadataException(message);
}
}
private MetadataValidator() {
// Private constructor to prevent instantiation
}
}