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author | Wenchen Fan <cloud0fan@outlook.com> | 2015-06-03 00:47:52 -0700 |
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committer | Reynold Xin <rxin@databricks.com> | 2015-06-03 00:47:52 -0700 |
commit | d38cf217e0c6bfbf451c659675280b43a08bc70f (patch) | |
tree | ed9ca36507ce4f766c18e07adf2d9a7c4d4382d9 /sql/core | |
parent | ce320cb2dbf28825f80795ce569735888f98d6e8 (diff) | |
download | spark-d38cf217e0c6bfbf451c659675280b43a08bc70f.tar.gz spark-d38cf217e0c6bfbf451c659675280b43a08bc70f.tar.bz2 spark-d38cf217e0c6bfbf451c659675280b43a08bc70f.zip |
[SPARK-7562][SPARK-6444][SQL] Improve error reporting for expression data type mismatch
It seems hard to find a common pattern of checking types in `Expression`. Sometimes we know what input types we need(like `And`, we know we need two booleans), sometimes we just have some rules(like `Add`, we need 2 numeric types which are equal). So I defined a general interface `checkInputDataTypes` in `Expression` which returns a `TypeCheckResult`. `TypeCheckResult` can tell whether this expression passes the type checking or what the type mismatch is.
This PR mainly works on apply input types checking for arithmetic and predicate expressions.
TODO: apply type checking interface to more expressions.
Author: Wenchen Fan <cloud0fan@outlook.com>
Closes #6405 from cloud-fan/6444 and squashes the following commits:
b5ff31b [Wenchen Fan] address comments
b917275 [Wenchen Fan] rebase
39929d9 [Wenchen Fan] add todo
0808fd2 [Wenchen Fan] make constrcutor of TypeCheckResult private
3bee157 [Wenchen Fan] and decimal type coercion rule for binary comparison
8883025 [Wenchen Fan] apply type check interface to CaseWhen
cffb67c [Wenchen Fan] to have resolved call the data type check function
6eaadff [Wenchen Fan] add equal type constraint to EqualTo
3affbd8 [Wenchen Fan] more fixes
654d46a [Wenchen Fan] improve tests
e0a3628 [Wenchen Fan] improve error message
1524ff6 [Wenchen Fan] fix style
69ca3fe [Wenchen Fan] add error message and tests
c71d02c [Wenchen Fan] fix hive tests
6491721 [Wenchen Fan] use value class TypeCheckResult
7ae76b9 [Wenchen Fan] address comments
cb77e4f [Wenchen Fan] Improve error reporting for expression data type mismatch
Diffstat (limited to 'sql/core')
-rw-r--r-- | sql/core/src/main/scala/org/apache/spark/sql/json/InferSchema.scala | 2 | ||||
-rw-r--r-- | sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/json/InferSchema.scala b/sql/core/src/main/scala/org/apache/spark/sql/json/InferSchema.scala index 06aa19ef09..565d10247f 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/json/InferSchema.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/json/InferSchema.scala @@ -147,7 +147,7 @@ private[sql] object InferSchema { * Returns the most general data type for two given data types. */ private[json] def compatibleType(t1: DataType, t2: DataType): DataType = { - HiveTypeCoercion.findTightestCommonType(t1, t2).getOrElse { + HiveTypeCoercion.findTightestCommonTypeOfTwo(t1, t2).getOrElse { // t1 or t2 is a StructType, ArrayType, or an unexpected type. (t1, t2) match { case (other: DataType, NullType) => other diff --git a/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala b/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala index 95eb1174b1..7e1e21f5fb 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala @@ -155,7 +155,7 @@ private[sql] object JsonRDD extends Logging { * Returns the most general data type for two given data types. */ private[json] def compatibleType(t1: DataType, t2: DataType): DataType = { - HiveTypeCoercion.findTightestCommonType(t1, t2) match { + HiveTypeCoercion.findTightestCommonTypeOfTwo(t1, t2) match { case Some(commonType) => commonType case None => // t1 or t2 is a StructType, ArrayType, or an unexpected type. |