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https://issues.apache.org/jira/browse/FLINK-3786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15262687#comment-15262687
]
ASF GitHub Bot commented on FLINK-3786:
---------------------------------------
Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/1928#discussion_r61478906
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/typeutils/base/BigIntComparator.java
---
@@ -0,0 +1,111 @@
+/*
+ * 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.flink.api.common.typeutils.base;
+
+import java.io.IOException;
+import java.math.BigInteger;
+import org.apache.flink.annotation.Internal;
+import org.apache.flink.core.memory.DataInputView;
+import org.apache.flink.core.memory.MemorySegment;
+
+@Internal
+public final class BigIntComparator extends
BasicTypeComparator<BigInteger> {
+
+ private static final long serialVersionUID = 1L;
+
+ public BigIntComparator(boolean ascending) {
+ super(ascending);
+ }
+
+ @Override
+ public int compareSerialized(DataInputView firstSource, DataInputView
secondSource) throws IOException {
+ BigInteger bi1 = BigIntSerializer.readBigInteger(firstSource);
+ BigInteger bi2 = BigIntSerializer.readBigInteger(secondSource);
+ int comp = bi1.compareTo(bi2);
--- End diff --
This is intentional. The Comparator does not support `null` comparisions.
It is the same behavior than `StringComparator` has: serialize null, but do not
compare it or even check it.
> Add BigDecimal and BigInteger as Basic types
> --------------------------------------------
>
> Key: FLINK-3786
> URL: https://issues.apache.org/jira/browse/FLINK-3786
> Project: Flink
> Issue Type: New Feature
> Components: Core
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> We already had the discussion on the mailing list some months ago about
> adding BigDecimal and BigInteger as basic types.
> Especially for business or scientific applications it
> makes sense to support the BigInteger and BigDecimal types natively. In
> my opinion they are as important as Date or Void and should be added as
> BasicTypes. The Table API would also benefit from it.
> http://mail-archives.apache.org/mod_mbox/flink-dev/201511.mbox/%3c564cad71.8070...@apache.org%3E
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