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.vector;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.util.Random;
  import org.apache.arrow.memory.BufferAllocator;
  import org.apache.arrow.memory.RootAllocator;
  import org.apache.arrow.vector.types.DateUnit;
  import org.apache.arrow.vector.types.FloatingPointPrecision;
  import org.apache.arrow.vector.types.IntervalUnit;
  import org.apache.arrow.vector.types.TimeUnit;
  import org.apache.arrow.vector.types.UnionMode;
  import org.apache.arrow.vector.types.pojo.ArrowType;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class TestTypeLayout {
  
    private BufferAllocator allocator;
  
    @BeforeEach
    public void prepare() {
      allocator = new RootAllocator(Integer.MAX_VALUE);
    }
  
    @AfterEach
    public void shutdown() {
      allocator.close();
    }
  
    @Test
    public void testTypeBufferCount() {
      ArrowType type = new ArrowType.Int(8, true);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Union(UnionMode.Sparse, new int[2]);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Union(UnionMode.Dense, new int[1]);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Struct();
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Timestamp(TimeUnit.MILLISECOND, null);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.List();
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.FixedSizeList(5);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Map(false);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.FloatingPoint(FloatingPointPrecision.SINGLE);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.FloatingPoint(FloatingPointPrecision.DOUBLE);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Decimal(10, 10, 128);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Decimal(10, 10, 256);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.FixedSizeBinary(5);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Bool();
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Binary();
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Utf8();
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Null();
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Date(DateUnit.DAY);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Time(TimeUnit.MILLISECOND, 32);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Interval(IntervalUnit.DAY_TIME);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
  
      type = new ArrowType.Duration(TimeUnit.MILLISECOND);
      assertEquals(
          TypeLayout.getTypeBufferCount(type),
          TypeLayout.getTypeLayout(type).getBufferLayouts().size());
    }
  
    private String generateRandomString(int length) {
      Random random = new Random();
      StringBuilder sb = new StringBuilder(length);
      for (int i = 0; i < length; i++) {
        sb.append(random.nextInt(10)); // 0-9
      }
      return sb.toString();
    }
  
    @Test
    public void testTypeBufferCountInVectorsWithVariadicBuffers() {
      // empty vector
      try (ViewVarCharVector viewVarCharVector = new ViewVarCharVector("myvector", allocator)) {
        ArrowType type = viewVarCharVector.getMinorType().getType();
        assertEquals(
            TypeLayout.getTypeBufferCount(type),
            TypeLayout.getTypeLayout(type).getBufferLayouts().size());
      }
      // vector with long strings
      try (ViewVarCharVector viewVarCharVector = new ViewVarCharVector("myvector", allocator)) {
        viewVarCharVector.allocateNew(32, 6);
  
        viewVarCharVector.setSafe(0, generateRandomString(8).getBytes());
        viewVarCharVector.setSafe(1, generateRandomString(12).getBytes());
        viewVarCharVector.setSafe(2, generateRandomString(14).getBytes());
        viewVarCharVector.setSafe(3, generateRandomString(18).getBytes());
        viewVarCharVector.setSafe(4, generateRandomString(22).getBytes());
        viewVarCharVector.setSafe(5, generateRandomString(24).getBytes());
  
        viewVarCharVector.setValueCount(6);
  
        ArrowType type = viewVarCharVector.getMinorType().getType();
        assertEquals(
            TypeLayout.getTypeBufferCount(type),
            TypeLayout.getTypeLayout(type).getBufferLayouts().size());
      }
    }
  }
  