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https://issues.apache.org/jira/browse/BEAM-8343?focusedWorklogId=325338&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-325338
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ASF GitHub Bot logged work on BEAM-8343:
----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Oct/19 21:35
Start Date: 08/Oct/19 21:35
Worklog Time Spent: 10m
Work Description: 11moon11 commented on pull request #9731: [BEAM-8343]
Added nessesary methods to BeamSqlTable to enable support for predicate/project
push-down
URL: https://github.com/apache/beam/pull/9731#discussion_r332744724
##########
File path:
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/meta/BeamSqlTableFilter.java
##########
@@ -0,0 +1,34 @@
+/*
+ * 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.extensions.sql.meta;
+
+import java.util.List;
+import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexNode;
+
+/** This interface defines Beam SQL Table Filter. */
+public interface BeamSqlTableFilter {
+ /**
+ * Identify parts of a predicate that are not supported by the IO push-down
capabilities to be
+ * preserved in a {@code Calc} following {@code BeamIOSourceRel}.
+ *
+ * @return {@code List<RexNode>} unsupported by the IO API. Should be empty
when an entire
+ * condition is supported, or an unchanged {@code List<RexNode>} when
predicate push-down is
+ * not supported at all.
+ */
+ List<RexNode> getNotSupported();
Review comment:
Changed method name to `constructFilter`.
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Issue Time Tracking
-------------------
Worklog Id: (was: 325338)
Time Spent: 3h 20m (was: 3h 10m)
> Add means for IO APIs to support predicate and/or project push-down when
> running SQL pipelines
> ----------------------------------------------------------------------------------------------
>
> Key: BEAM-8343
> URL: https://issues.apache.org/jira/browse/BEAM-8343
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql
> Reporter: Kirill Kozlov
> Assignee: Kirill Kozlov
> Priority: Major
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> The objective is to create a universal way for Beam SQL IO APIs to support
> predicate/project push-down.
> A proposed way to achieve that is by introducing an interface responsible
> for identifying what portion(s) of a Calc can be moved down to IO layer.
> Also, adding following methods to a BeamSqlTable interface to pass necessary
> parameters to IO APIs:
> - BeamSqlTableFilter supportsFilter(RexProgram program, RexNode filter)
> - Boolean supportsProjects()
> - PCollection<Row> buildIOReader(PBegin begin, BeamSqlTableFilter filters,
> List<String> fieldNames)
>
> Design doc
> [link|https://docs.google.com/document/d/1-ysD7U7qF3MAmSfkbXZO_5PLJBevAL9bktlLCerd_jE/edit?usp=sharing].
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