viirya commented on a change in pull request #24053: [SPARK-27126][SQL] Consolidate Scala and Java type deserializerFor URL: https://github.com/apache/spark/pull/24053#discussion_r264260018
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/TypeInference.scala ########## @@ -0,0 +1,427 @@ +/* + * 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.spark.sql.catalyst + +import java.util.{Map => JMap} + +import scala.collection.Map +import scala.language.existentials + +import com.google.common.reflect.TypeToken + +import org.apache.spark.sql.catalyst.DeserializerBuildHelper._ +import org.apache.spark.sql.catalyst.JavaTypeInference._ +import org.apache.spark.sql.catalyst.ScalaReflection._ +import org.apache.spark.sql.catalyst.ScalaReflection.universe._ +import org.apache.spark.sql.catalyst.expressions.{Expression, IsNull, MapKeys, MapValues} +import org.apache.spark.sql.catalyst.expressions.objects._ +import org.apache.spark.sql.catalyst.util.ArrayBasedMapData +import org.apache.spark.sql.types.{ObjectType, SQLUserDefinedType, UDTRegistration, UserDefinedType} + +object TypeInference { + + /** + * Returns an expression that can be used to deserialize an input expression to an object of type + * represented by an `TypeInference` with a compatible schema. + * + * @param t The `TypeInference` object providing type information. + * @param path The expression which can be used to extract serialized value. + * @param walkedTypePath The paths from top to bottom to access current field when deserializing. + */ + def deserializerFor( + t: TypeInference, + path: Expression, + walkedTypePath: WalkedTypePath): Expression = t match { + case _ if t.isNotObjectType => path + case _ if t.isJavaBoolean => + createDeserializerForTypesSupportValueOf(path, classOf[java.lang.Boolean]) + case _ if t.isJavaByte => + createDeserializerForTypesSupportValueOf(path, classOf[java.lang.Byte]) + case _ if t.isJavaInteger => + createDeserializerForTypesSupportValueOf(path, classOf[java.lang.Integer]) + case _ if t.isJavaLong => + createDeserializerForTypesSupportValueOf(path, classOf[java.lang.Long]) + case _ if t.isJavaDouble => + createDeserializerForTypesSupportValueOf(path, classOf[java.lang.Double]) + case _ if t.isJavaFloat => + createDeserializerForTypesSupportValueOf(path, classOf[java.lang.Float]) + case _ if t.isJavaShort => + createDeserializerForTypesSupportValueOf(path, classOf[java.lang.Short]) + case _ if t.isJavaLocalDate => + createDeserializerForLocalDate(path) + case _ if t.isJavaDate => + createDeserializerForSqlDate(path) + case _ if t.isJavaInstant => + createDeserializerForInstant(path) + case _ if t.isJavaTimestamp => + createDeserializerForSqlTimestamp(path) + case _ if t.isJavaString => + createDeserializerForString(path, returnNullable = false) Review comment: At `JavaTypeInference`, it was `returnNullable = true`, but at `ScalaReflection`, it was `returnNullable = false`. This inconsistency seems weird. Let me do ``returnNullable = false` first to see if tests can be passed. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
