content: /*
   * 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 com.aliyun.odps.table.utils;
  
  import com.aliyun.odps.table.DataFormat;
  import org.apache.arrow.memory.RootAllocator;
  
  public final class ArrowUtils {
  
      private static RootAllocator rootAllocator;
  
      public static synchronized RootAllocator getDefaultRootAllocator() {
          if (rootAllocator == null) {
              rootAllocator = new RootAllocator(Long.MAX_VALUE);
          }
          return rootAllocator;
      }
  
      public static DataFormat getDefaultDataFormat() {
          return new DataFormat(DataFormat.Type.ARROW, DataFormat.Version.V5);
      }
  
      /**
       * Returns a new allocator limited to maxAllocation bytes
       */
      public static RootAllocator newRootAllocator(long maxAllocation) {
          return new RootAllocator(
                  RootAllocator.configBuilder()
                          .maxAllocation(maxAllocation)
                          .build());
      }
  }