--- /dev/null
+/*
+ * 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.holders;
+
+import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.types.Types;
+
+/**
+ * {@link ValueHolder} for Dense Union Vectors.
+ */
+public class DenseUnionHolder implements ValueHolder {
+ public FieldReader reader;
+ public int isSet;
+ public byte typeId;
+
+ public Types.MinorType getMinorType() {
+ return reader.getMinorType();
+ }
+
+ public boolean isSet() {
+ return isSet == 1;
+ }
+}