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author | Cheng Hao <hao.cheng@intel.com> | 2015-02-03 12:12:26 -0800 |
---|---|---|
committer | Michael Armbrust <michael@databricks.com> | 2015-02-03 12:12:26 -0800 |
commit | ca7a6cdff004eb4605fd223e127b4a46a0a214e7 (patch) | |
tree | 31e7c93b147b264557e45eea777dce63e9343ff7 /sql | |
parent | 0c20ce69fb4bcb1cec5313a9d072826c5588cbbc (diff) | |
download | spark-ca7a6cdff004eb4605fd223e127b4a46a0a214e7.tar.gz spark-ca7a6cdff004eb4605fd223e127b4a46a0a214e7.tar.bz2 spark-ca7a6cdff004eb4605fd223e127b4a46a0a214e7.zip |
[SPARK-5550] [SQL] Support the case insensitive for UDF
SQL in HiveContext, should be case insensitive, however, the following query will fail.
```scala
udf.register("random0", () => { Math.random()})
assert(sql("SELECT RANDOM0() FROM src LIMIT 1").head().getDouble(0) >= 0.0)
```
Author: Cheng Hao <hao.cheng@intel.com>
Closes #4326 from chenghao-intel/udf_case_sensitive and squashes the following commits:
485cf66 [Cheng Hao] Support the case insensitive for UDF
Diffstat (limited to 'sql')
4 files changed, 72 insertions, 6 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala index 760c49fbca..9f334f6d42 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala @@ -27,23 +27,25 @@ trait FunctionRegistry { def registerFunction(name: String, builder: FunctionBuilder): Unit def lookupFunction(name: String, children: Seq[Expression]): Expression + + def caseSensitive: Boolean } trait OverrideFunctionRegistry extends FunctionRegistry { - val functionBuilders = new mutable.HashMap[String, FunctionBuilder]() + val functionBuilders = StringKeyHashMap[FunctionBuilder](caseSensitive) def registerFunction(name: String, builder: FunctionBuilder) = { functionBuilders.put(name, builder) } abstract override def lookupFunction(name: String, children: Seq[Expression]): Expression = { - functionBuilders.get(name).map(_(children)).getOrElse(super.lookupFunction(name,children)) + functionBuilders.get(name).map(_(children)).getOrElse(super.lookupFunction(name, children)) } } -class SimpleFunctionRegistry extends FunctionRegistry { - val functionBuilders = new mutable.HashMap[String, FunctionBuilder]() +class SimpleFunctionRegistry(val caseSensitive: Boolean) extends FunctionRegistry { + val functionBuilders = StringKeyHashMap[FunctionBuilder](caseSensitive) def registerFunction(name: String, builder: FunctionBuilder) = { functionBuilders.put(name, builder) @@ -64,4 +66,30 @@ object EmptyFunctionRegistry extends FunctionRegistry { def lookupFunction(name: String, children: Seq[Expression]): Expression = { throw new UnsupportedOperationException } + + def caseSensitive: Boolean = ??? +} + +/** + * Build a map with String type of key, and it also supports either key case + * sensitive or insensitive. + * TODO move this into util folder? + */ +object StringKeyHashMap { + def apply[T](caseSensitive: Boolean) = caseSensitive match { + case false => new StringKeyHashMap[T](_.toLowerCase) + case true => new StringKeyHashMap[T](identity) + } +} + +class StringKeyHashMap[T](normalizer: (String) => String) { + private val base = new collection.mutable.HashMap[String, T]() + + def apply(key: String): T = base(normalizer(key)) + + def get(key: String): Option[T] = base.get(normalizer(key)) + def put(key: String, value: T): Option[T] = base.put(normalizer(key), value) + def remove(key: String): Option[T] = base.remove(normalizer(key)) + def iterator: Iterator[(String, T)] = base.toIterator } + diff --git a/sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala b/sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala index a741d0031d..2697e780c0 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala @@ -87,7 +87,7 @@ class SQLContext(@transient val sparkContext: SparkContext) protected[sql] lazy val catalog: Catalog = new SimpleCatalog(true) @transient - protected[sql] lazy val functionRegistry: FunctionRegistry = new SimpleFunctionRegistry + protected[sql] lazy val functionRegistry: FunctionRegistry = new SimpleFunctionRegistry(true) @transient protected[sql] lazy val analyzer: Analyzer = diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala index f6d9027f90..50f266a4bc 100644 --- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala +++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala @@ -311,7 +311,9 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { // Note that HiveUDFs will be overridden by functions registered in this context. @transient override protected[sql] lazy val functionRegistry = - new HiveFunctionRegistry with OverrideFunctionRegistry + new HiveFunctionRegistry with OverrideFunctionRegistry { + def caseSensitive = false + } /* An analyzer that uses the Hive metastore. */ @transient diff --git a/sql/hive/src/test/scala/org/apache/spark/sql/hive/UDFSuite.scala b/sql/hive/src/test/scala/org/apache/spark/sql/hive/UDFSuite.scala new file mode 100644 index 0000000000..85b6bc93d7 --- /dev/null +++ b/sql/hive/src/test/scala/org/apache/spark/sql/hive/UDFSuite.scala @@ -0,0 +1,36 @@ +/* + * 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.hive + +/* Implicits */ + +import org.apache.spark.sql.QueryTest +import org.apache.spark.sql.hive.test.TestHive._ + +case class FunctionResult(f1: String, f2: String) + +class UDFSuite extends QueryTest { + test("UDF case insensitive") { + udf.register("random0", () => { Math.random()}) + udf.register("RANDOM1", () => { Math.random()}) + udf.register("strlenScala", (_: String).length + (_:Int)) + assert(sql("SELECT RANDOM0() FROM src LIMIT 1").head().getDouble(0) >= 0.0) + assert(sql("SELECT RANDOm1() FROM src LIMIT 1").head().getDouble(0) >= 0.0) + assert(sql("SELECT strlenscala('test', 1) FROM src LIMIT 1").head().getInt(0) === 5) + } +} |