Github user hsaputra commented on a diff in the pull request:
https://github.com/apache/spark/pull/993#discussion_r13495163
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/GeneratedRow.scala
---
@@ -0,0 +1,833 @@
+/*
+ * 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
+package catalyst
+package expressions
+
+import types._
+
+object DumpByteCode {
+ import scala.sys.process._
+ val dumpDirectory = util.getTempFilePath("sparkSqlByteCode")
+ dumpDirectory.mkdir()
+
+ def apply(obj: Any): Unit = {
+ val generatedClass = obj.getClass
+ val classLoader =
+ generatedClass
+ .getClassLoader
+ .asInstanceOf[scala.tools.nsc.interpreter.AbstractFileClassLoader]
+ val generatedBytes = classLoader.classBytes(generatedClass.getName)
+
+ val packageDir = new java.io.File(dumpDirectory,
generatedClass.getPackage.getName)
+ if (!packageDir.exists()) { packageDir.mkdir() }
+
+ val classFile =
+ new java.io.File(packageDir,
generatedClass.getName.split("\\.").last + ".class")
+
+ val outfile = new java.io.FileOutputStream(classFile)
+ outfile.write(generatedBytes)
+ outfile.close()
+
+ println(
+ s"javap -p -v -classpath ${dumpDirectory.getCanonicalPath}
${generatedClass.getName}".!!)
+ }
+}
+
+object CodeGeneration
+
+class CodeGenerator extends Logging {
--- End diff --
Would be helpful to add class header comment to describe the usage of this
class in bigger context.
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