GH-37705: [Java] Extra input methods for binary writers

java/vector/src/main/codegen/templates/AbstractFieldWriter.java

@@ -124,6 +124,24 @@ public void write(${name}Holder holder) {
   }
   </#if>
 
+  <#if minor.class?ends_with("VarBinary")>
+  public void writeTo${minor.class}(byte[] value) {
+    fail("${name}");
+  }
+
+  public void writeTo${minor.class}(byte[] value, int offset, int length) {
+    fail("${name}");
+  }
+
+  public void writeTo${minor.class}(ByteBuffer value) {
+    fail("${name}");
+  }
+
+  public void writeTo${minor.class}(ByteBuffer value, int offset, int length) {
+    fail("${name}");
+  }
+  </#if>
+
   </#list></#list>
 
   public void writeNull() {

java/vector/src/main/codegen/templates/ComplexWriters.java

@@ -180,6 +180,28 @@ public void writeNull() {
     vector.setValueCount(idx()+1);
   }
   </#if>
+
+  <#if minor.class?ends_with("VarBinary")>
+  public void writeTo${minor.class}(byte[] value) {
+    vector.setSafe(idx(), value);
+    vector.setValueCount(idx() + 1);
+  }
+
+  public void writeTo${minor.class}(byte[] value, int offset, int length) {
+    vector.setSafe(idx(), value, offset, length);
+    vector.setValueCount(idx() + 1);
+  }
+
+  public void writeTo${minor.class}(ByteBuffer value) {
+    vector.setSafe(idx(), value, 0, value.remaining());
+    vector.setValueCount(idx() + 1);
+  }
+
+  public void writeTo${minor.class}(ByteBuffer value, int offset, int length) {
+    vector.setSafe(idx(), value, offset, length);
+    vector.setValueCount(idx() + 1);
+  }
+  </#if>
 }
 
 <@pp.changeOutputFile name="/org/apache/arrow/vector/complex/writer/${eName}Writer.java" />
@@ -223,6 +245,17 @@ public interface ${eName}Writer extends BaseWriter {
   @Deprecated
   public void writeBigEndianBytesTo${minor.class}(byte[] value);
 </#if>
+
+<#if minor.class?ends_with("VarBinary")>
+  public void writeTo${minor.class}(byte[] value);
+
+  public void writeTo${minor.class}(byte[] value, int offset, int length);
+
+  public void writeTo${minor.class}(ByteBuffer value);
+
+  public void writeTo${minor.class}(ByteBuffer value, int offset, int length);
+</#if>
+
 }
 
 </#list>

java/vector/src/test/java/org/apache/arrow/vector/complex/writer/TestSimpleWriter.java

@@ -0,0 +1,138 @@
+/*
+ * 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.complex.writer;
+
+import java.nio.ByteBuffer;
+
+import org.apache.arrow.memory.BufferAllocator;
+import org.apache.arrow.memory.RootAllocator;
+import org.apache.arrow.vector.LargeVarBinaryVector;
+import org.apache.arrow.vector.VarBinaryVector;
+import org.apache.arrow.vector.complex.impl.LargeVarBinaryWriterImpl;
+import org.apache.arrow.vector.complex.impl.VarBinaryWriterImpl;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+public class TestSimpleWriter {
+
+  private BufferAllocator allocator;
+
+  @Before
+  public void init() {
+    allocator = new RootAllocator(Integer.MAX_VALUE);
+  }
+
+  @After
+  public void terminate() throws Exception {
+    allocator.close();
+  }
+
+  @Test
+  public void testWriteByteArrayToVarBinary() {
+    try (VarBinaryVector vector = new VarBinaryVector("test", allocator);
+         VarBinaryWriterImpl writer = new VarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      writer.writeToVarBinary(input);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(input, result);
+    }
+  }
+
+  @Test
+  public void testWriteByteArrayWithOffsetToVarBinary() {
+    try (VarBinaryVector vector = new VarBinaryVector("test", allocator);
+         VarBinaryWriterImpl writer = new VarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      writer.writeToVarBinary(input, 1, 1);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(new byte[] { 0x02 }, result);
+    }
+  }
+
+  @Test
+  public void testWriteByteBufferToVarBinary() {
+    try (VarBinaryVector vector = new VarBinaryVector("test", allocator);
+         VarBinaryWriterImpl writer = new VarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      ByteBuffer buffer = ByteBuffer.wrap(input);
+      writer.writeToVarBinary(buffer);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(input, result);
+    }
+  }
+
+  @Test
+  public void testWriteByteBufferWithOffsetToVarBinary() {
+    try (VarBinaryVector vector = new VarBinaryVector("test", allocator);
+         VarBinaryWriterImpl writer = new VarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      ByteBuffer buffer = ByteBuffer.wrap(input);
+      writer.writeToVarBinary(buffer, 1, 1);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(new byte[] { 0x02 }, result);
+    }
+  }
+
+  @Test
+  public void testWriteByteArrayToLargeVarBinary() {
+    try (LargeVarBinaryVector vector = new LargeVarBinaryVector("test", allocator);
+         LargeVarBinaryWriterImpl writer = new LargeVarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      writer.writeToLargeVarBinary(input);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(input, result);
+    }
+  }
+
+  @Test
+  public void testWriteByteArrayWithOffsetToLargeVarBinary() {
+    try (LargeVarBinaryVector vector = new LargeVarBinaryVector("test", allocator);
+         LargeVarBinaryWriterImpl writer = new LargeVarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      writer.writeToLargeVarBinary(input, 1, 1);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(new byte[] { 0x02 }, result);
+    }
+  }
+
+  @Test
+  public void testWriteByteBufferToLargeVarBinary() {
+    try (LargeVarBinaryVector vector = new LargeVarBinaryVector("test", allocator);
+         LargeVarBinaryWriterImpl writer = new LargeVarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      ByteBuffer buffer = ByteBuffer.wrap(input);
+      writer.writeToLargeVarBinary(buffer);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(input, result);
+    }
+  }
+
+  @Test
+  public void testWriteByteBufferWithOffsetToLargeVarBinary() {
+    try (LargeVarBinaryVector vector = new LargeVarBinaryVector("test", allocator);
+         LargeVarBinaryWriterImpl writer = new LargeVarBinaryWriterImpl(vector)) {
+      byte[] input = new byte[] { 0x01, 0x02 };
+      ByteBuffer buffer = ByteBuffer.wrap(input);
+      writer.writeToLargeVarBinary(buffer, 1, 1);
+      byte[] result = vector.get(0);
+      Assert.assertArrayEquals(new byte[] { 0x02 }, result);
+    }
+  }
+}