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https://issues.apache.org/jira/browse/FLINK-3856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15278371#comment-15278371
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ASF GitHub Bot commented on FLINK-3856:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1959#discussion_r62702515
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/typeinfo/SqlTimeTypeInfo.java
---
@@ -0,0 +1,177 @@
+/*
+ * 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.typeinfo;
+
+import java.lang.reflect.Constructor;
+import java.sql.Date;
+import java.sql.Time;
+import java.sql.Timestamp;
+import java.util.Objects;
+import org.apache.flink.annotation.PublicEvolving;
+import org.apache.flink.api.common.ExecutionConfig;
+import org.apache.flink.api.common.typeutils.TypeComparator;
+import org.apache.flink.api.common.typeutils.TypeSerializer;
+import org.apache.flink.api.common.typeutils.base.DateComparator;
+import org.apache.flink.api.common.typeutils.base.SqlDateSerializer;
+import org.apache.flink.api.common.typeutils.base.SqlTimeSerializer;
+import org.apache.flink.api.common.typeutils.base.SqlTimestampComparator;
+import org.apache.flink.api.common.typeutils.base.SqlTimestampSerializer;
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/**
+ * Type information for Java SQL Date/Time/Timestamp.
+ */
+@PublicEvolving
+public class SqlTimeTypeInfo<T> extends TypeInformation<T> implements
AtomicType<T> {
--- End diff --
Do we want to implement a new `TypeInformation` which is basically a copy
of `BasicTypeInfo`?
Alternatively we could make `SqlTimeTypeInfo` just a holder for three
`public static final BasicTypeInfo`s of the three time types. The `protected`
constructor of `BasicTypeInfo` is visible if `SqlTimeTypeInfo` is in the same
package as `BasicTypeInfo`.
> Create types for java.sql.Date/Time/Timestamp
> ---------------------------------------------
>
> Key: FLINK-3856
> URL: https://issues.apache.org/jira/browse/FLINK-3856
> Project: Flink
> Issue Type: New Feature
> Components: Core
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> At the moment there is only the {{Date}} type which is not sufficient for
> most use cases about time.
> The Table API would also benefit from having different types as output result.
> I would propose to add the three {{java.sql.}} types either as {{BasicTypes}}
> or in an additional class {{TimeTypes}}.
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