metastore/metastore-api/src/main/java/org/apache/drill/metastore/components/tables/TablesMetadataTypeValidator.java

/*
 * 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.drill.metastore.components.tables;

import org.apache.drill.metastore.metadata.MetadataType;
import org.apache.drill.metastore.operate.MetadataTypeValidator;
import org.apache.drill.shaded.guava.com.google.common.collect.ImmutableSet;

import java.util.Set;

/**
 * Implementation of {@link MetadataTypeValidator} interface which provides
 * list of supported metadata types for Metastore Tables component.
 */
public class TablesMetadataTypeValidator implements MetadataTypeValidator {

  public static final TablesMetadataTypeValidator INSTANCE = new TablesMetadataTypeValidator();

  private static final Set<MetadataType> SUPPORTED_METADATA_TYPES = ImmutableSet.of(
    MetadataType.ALL,
    MetadataType.TABLE,
    MetadataType.SEGMENT,
    MetadataType.FILE,
    MetadataType.ROW_GROUP,
    MetadataType.PARTITION);

  @Override
  public Set<MetadataType> supportedMetadataTypes() {
    return SUPPORTED_METADATA_TYPES;
  }
}