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 org.apache.arrow.c.jni;
  
  /** JniWrapper for C Data Interface API implementation. */
  public class JniWrapper {
    private static final JniWrapper INSTANCE = new JniWrapper();
  
    public static JniWrapper get() {
      JniLoader.get().ensureLoaded();
      return INSTANCE;
    }
  
    private JniWrapper() {
      // A best effort to error on 32-bit systems
      String dataModel = System.getProperty("sun.arch.data.model");
      if (dataModel != null && dataModel.equals("32")) {
        throw new UnsupportedOperationException(
            "The Java C Data Interface implementation is currently only supported on 64-bit systems");
      }
    }
  
    public native void releaseSchema(long memoryAddress);
  
    public native void releaseArray(long memoryAddress);
  
    public native void getNextArrayStream(long streamAddress, long arrayAddress)
        throws CDataJniException;
  
    public native void getSchemaArrayStream(long streamAddress, long arrayAddress)
        throws CDataJniException;
  
    public native void releaseArrayStream(long memoryAddress);
  
    public native void exportSchema(long memoryAddress, PrivateData privateData);
  
    public native void exportArray(long memoryAddress, PrivateData data);
  
    public native void exportArrayStream(long memoryAddress, PrivateData data);
  }
  