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https://issues.apache.org/jira/browse/BEAM-9037?focusedWorklogId=377416&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-377416
]
ASF GitHub Bot logged work on BEAM-9037:
----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Jan/20 19:06
Start Date: 26/Jan/20 19:06
Worklog Time Spent: 10m
Work Description: alexvanboxel commented on pull request #10486:
[BEAM-9037] Instant and duration as logical type
URL: https://github.com/apache/beam/pull/10486#discussion_r371022191
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/logicaltypes/NanosType.java
##########
@@ -0,0 +1,59 @@
+/*
+ * 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.beam.sdk.schemas.logicaltypes;
+
+import java.util.UUID;
+import org.apache.beam.sdk.schemas.Schema;
+import org.apache.beam.sdk.values.Row;
+
+/** Base class for types representing timestamps or durations as nanoseconds.
*/
+abstract class NanosType<T> implements Schema.LogicalType<T, Row> {
+ private final String identifier;
+
+ protected static final Schema SCHEMA;
+
+ static {
+ Schema schema =
Schema.builder().addInt64Field("seconds").addInt32Field("nanos").build();
+ schema.setUUID(UUID.fromString("dc5915f1-6db8-3134-9444-4980fb088e92"));
+ SCHEMA = schema;
Review comment:
Switched to instance variables. Proto conversion used by ByteBuddy still
uses a static version of the schema for performance reasons.
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Issue Time Tracking
-------------------
Worklog Id: (was: 377416)
Time Spent: 1.5h (was: 1h 20m)
> Instant and duration as logical type
> -------------------------------------
>
> Key: BEAM-9037
> URL: https://issues.apache.org/jira/browse/BEAM-9037
> Project: Beam
> Issue Type: Task
> Components: sdk-java-core
> Reporter: Alex Van Boxel
> Assignee: Alex Van Boxel
> Priority: Major
> Fix For: 2.19.0
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> The proto schema includes Timestamp and Duration with nano precision. The
> logical types should be promoted to the core logical types, so they can be
> handled on various IO's as standard mandatory conversions.
> This means that the logical type should use the proto specific Timestamp and
> Duration but the java 8 Instant and Duration.
> See discussion in the design document:
> [https://docs.google.com/document/d/1uu9pJktzT_O3DxGd1-Q2op4nRk4HekIZbzi-0oTAips/edit#heading=h.9uhml95iygqr]
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