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https://issues.apache.org/jira/browse/BEAM-5921?focusedWorklogId=161692&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-161692
]
ASF GitHub Bot logged work on BEAM-5921:
----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Nov/18 18:38
Start Date: 01/Nov/18 18:38
Worklog Time Spent: 10m
Work Description: XuMingmin commented on a change in pull request #6913:
[BEAM-5921] [SQL] Support Joda types for UDF arguments
URL: https://github.com/apache/beam/pull/6913#discussion_r230151938
##########
File path:
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/UdfImpl.java
##########
@@ -0,0 +1,186 @@
+/*
+ * 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.impl;
+
+import static org.apache.calcite.util.Static.RESOURCE;
+
+import com.google.common.collect.ImmutableMultimap;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import org.apache.beam.sdk.extensions.sql.impl.utils.CalciteUtils;
+import org.apache.calcite.adapter.enumerable.CallImplementor;
+import org.apache.calcite.adapter.enumerable.NullPolicy;
+import org.apache.calcite.adapter.enumerable.ReflectiveCallNotNullImplementor;
+import org.apache.calcite.adapter.enumerable.RexImpTable;
+import org.apache.calcite.linq4j.function.SemiStrict;
+import org.apache.calcite.linq4j.function.Strict;
+import org.apache.calcite.rel.type.RelDataType;
+import org.apache.calcite.rel.type.RelDataTypeFactory;
+import org.apache.calcite.schema.ImplementableFunction;
+import org.apache.calcite.schema.ScalarFunction;
+import org.apache.calcite.schema.impl.ScalarFunctionImpl;
+import org.apache.calcite.sql.SqlOperatorBinding;
+
+/** Beam-customized version from {@link ScalarFunctionImpl}, to address
BEAM-5921. */
+public class UdfImpl extends UdfImplReflectiveFunctionBase
+ implements ScalarFunction, ImplementableFunction {
+
+ private final CallImplementor implementor;
+
+ /** Private constructor. */
+ private UdfImpl(Method method, CallImplementor implementor) {
+ super(method);
+ this.implementor = implementor;
+ }
+
+ /** Creates {@link org.apache.calcite.schema.ScalarFunction} for each method
in a given class. */
Review comment:
`ScalarFuction` is ok, `UdfImpl` is subclass of `ScalarFuction`.
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Issue Time Tracking
-------------------
Worklog Id: (was: 161692)
Time Spent: 1h (was: 50m)
> [SQL] Support Joda types for UDF arguments
> ------------------------------------------
>
> Key: BEAM-5921
> URL: https://issues.apache.org/jira/browse/BEAM-5921
> Project: Beam
> Issue Type: Bug
> Components: dsl-sql
> Reporter: Anton Kedin
> Assignee: Xu Mingmin
> Priority: Major
> Time Spent: 1h
> Remaining Estimate: 0h
>
> We call ScalarFunctionImpl.create() to register a UDF with Calcite schema in
> BeamSqlEnv. Internally it uses Calcite's internal mapping
> (JavaToSqlTypeConversionRules) to map Java types to SQL types to create a
> function signature that gets registered in the schema. Problem is that this
> logic is not extensible and doesn't include Joda types support (maybe others
> as well).
> We can work around this by constructing our own subclass of Function that
> gets registered in the schema instead of calling ScalarFunctionImpl.create().
> This logic can use our own custom mapping (or fall back to Calcite
> implementation if needed).
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