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// 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
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// under the License.

package org.apache.impala.authorization;

import javax.annotation.Nullable;

import com.google.common.base.Preconditions;
import com.google.common.base.Strings;

/**
 * A class to authorize access to a table.
 */
public class AuthorizableTable extends Authorizable {
  private final String dbName_;
  private final String tableName_;
  @Nullable // Is null if the owner is not set.
  private final String ownerUser_;

  public AuthorizableTable(String dbName, String tableName, @Nullable String ownerUser) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(dbName));
    Preconditions.checkArgument(!Strings.isNullOrEmpty(tableName));
    dbName_ = dbName;
    tableName_ = tableName;
    ownerUser_ = ownerUser;
  }

  @Override
  public String getName() { return dbName_ + "." + tableName_; }

  @Override
  public Type getType() { return Type.TABLE; }

  @Override
  public String getDbName() { return dbName_; }

  @Override
  public String getTableName() { return tableName_; }

  @Override
  public String getFullTableName() { return getName(); }

  @Override
  public String getOwnerUser() { return ownerUser_; }
}