import quincy 17.2.0

[ceph.git] / ceph / src / arrow / java / adapter / avro / src / main / java / org / apache / arrow / consumers / AvroStringConsumer.java

diff --git a/ceph/src/arrow/java/adapter/avro/src/main/java/org/apache/arrow/consumers/AvroStringConsumer.java b/ceph/src/arrow/java/adapter/avro/src/main/java/org/apache/arrow/consumers/AvroStringConsumer.java
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+++ b/ceph/src/arrow/java/adapter/avro/src/main/java/org/apache/arrow/consumers/AvroStringConsumer.java
@@ -0,0 +1,48 @@
+/*
+ * 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.consumers;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import org.apache.arrow.vector.VarCharVector;
+import org.apache.avro.io.Decoder;
+
+/**
+ * Consumer which consume string type values from avro decoder.
+ * Write the data to {@link VarCharVector}.
+ */
+public class AvroStringConsumer extends BaseAvroConsumer<VarCharVector> {
+
+  private ByteBuffer cacheBuffer;
+
+  /**
+   * Instantiate a AvroStringConsumer.
+   */
+  public AvroStringConsumer(VarCharVector vector) {
+    super(vector);
+  }
+
+  @Override
+  public void consume(Decoder decoder) throws IOException {
+    // cacheBuffer is initialized null and create in the first consume,
+    // if its capacity < size to read, decoder will create a new one with new capacity.
+    cacheBuffer = decoder.readBytes(cacheBuffer);
+    vector.setSafe(currentIndex++, cacheBuffer, 0, cacheBuffer.limit());
+  }
+}