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https://issues.apache.org/jira/browse/ARROW-1710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16261736#comment-16261736
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ASF GitHub Bot commented on ARROW-1710:
---------------------------------------
icexelloss commented on a change in pull request #1341: [WIP] ARROW-1710:
[Java] Remove Non-Nullable Vectors
URL: https://github.com/apache/arrow/pull/1341#discussion_r152439296
##########
File path:
java/vector/src/main/java/org/apache/arrow/vector/complex/MapVector.java
##########
@@ -21,332 +21,492 @@
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Iterator;
+import java.util.Arrays;
+import java.util.Collections;
import java.util.List;
-import java.util.Map;
-import javax.annotation.Nullable;
-
-import com.google.common.base.Preconditions;
-import com.google.common.collect.Ordering;
-import com.google.common.primitives.Ints;
+import com.google.common.collect.ObjectArrays;
import io.netty.buffer.ArrowBuf;
-
+import org.apache.arrow.memory.BaseAllocator;
import org.apache.arrow.memory.BufferAllocator;
import org.apache.arrow.vector.*;
-import org.apache.arrow.vector.complex.impl.SingleMapReaderImpl;
-import org.apache.arrow.vector.complex.reader.FieldReader;
+import org.apache.arrow.vector.complex.impl.NullableMapReaderImpl;
+import org.apache.arrow.vector.complex.impl.NullableMapWriter;
import org.apache.arrow.vector.holders.ComplexHolder;
-import org.apache.arrow.vector.types.Types.MinorType;
+import org.apache.arrow.vector.schema.ArrowFieldNode;
import org.apache.arrow.vector.types.pojo.ArrowType;
-import org.apache.arrow.vector.types.pojo.Field;
+import org.apache.arrow.vector.types.pojo.ArrowType.Struct;
+import org.apache.arrow.vector.types.pojo.DictionaryEncoding;
import org.apache.arrow.vector.types.pojo.FieldType;
+import org.apache.arrow.vector.types.pojo.Field;
import org.apache.arrow.vector.util.CallBack;
-import org.apache.arrow.vector.util.JsonStringHashMap;
+import org.apache.arrow.vector.util.OversizedAllocationException;
import org.apache.arrow.vector.util.TransferPair;
-public class MapVector extends AbstractMapVector {
- //private static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(MapVector.class);
+public class MapVector extends NonNullableMapVector implements FieldVector {
Review comment:
Is `NonNullableMapVector` something new? Can you explain the change of class
hierarchy here?
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> [Java] Decide what to do with non-nullable vectors in new vector class
> hierarchy
> ---------------------------------------------------------------------------------
>
> Key: ARROW-1710
> URL: https://issues.apache.org/jira/browse/ARROW-1710
> Project: Apache Arrow
> Issue Type: Sub-task
> Components: Java - Vectors
> Reporter: Li Jin
> Assignee: Bryan Cutler
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> So far the consensus seems to be remove all non-nullable vectors.
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