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/*
 * 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());
    }
}