spark git commit: [SPARK-16274][SQL] Implement xpath_boolean

[rxin]

Repository: spark
Updated Branches:
  refs/heads/branch-2.0 144aa84ce -> bb4b0419b


[SPARK-16274][SQL] Implement xpath_boolean

This patch implements xpath_boolean expression for Spark SQL, a xpath function 
that returns true or false. The implementation is modelled after Hive's 
xpath_boolean, except that how the expression handles null inputs. Hive throws 
a NullPointerException at runtime if either of the input is null. This 
implementation returns null if either of the input is null.

Created two new test suites. One for unit tests covering the expression, and 
the other for end-to-end test in SQL.

Author: petermaxlee 

Closes #13964 from petermaxlee/SPARK-16274.

(cherry picked from commit d3af6731fa270842818ed91d6b4d14708ddae2db)
Signed-off-by: Reynold Xin 


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/bb4b0419
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/bb4b0419
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/bb4b0419

Branch: refs/heads/branch-2.0
Commit: bb4b0419b1dcd2b1926a829488a5a1d1b43756e0
Parents: 144aa84
Author: petermaxlee 
Authored: Thu Jun 30 09:27:48 2016 +0800
Committer: Reynold Xin 
Committed: Thu Jul 7 21:07:33 2016 -0700

--
 .../catalyst/analysis/FunctionRegistry.scala|  2 +
 .../catalyst/expressions/xml/XPathBoolean.scala | 58 +++
 .../expressions/xml/XPathExpressionSuite.scala  | 61 
 .../apache/spark/sql/XmlFunctionsSuite.scala| 32 ++
 .../spark/sql/hive/HiveSessionCatalog.scala |  2 +-
 5 files changed, 154 insertions(+), 1 deletion(-)
--


http://git-wip-us.apache.org/repos/asf/spark/blob/bb4b0419/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
--
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 346cdd8..e7f335f 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
@@ -25,6 +25,7 @@ import org.apache.spark.sql.AnalysisException
 import org.apache.spark.sql.catalyst.analysis.FunctionRegistry.FunctionBuilder
 import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.catalyst.expressions.aggregate._
+import org.apache.spark.sql.catalyst.expressions.xml._
 import org.apache.spark.sql.catalyst.util.StringKeyHashMap
 
 
@@ -305,6 +306,7 @@ object FunctionRegistry {
 expression[UnBase64]("unbase64"),
 expression[Unhex]("unhex"),
 expression[Upper]("upper"),
+expression[XPathBoolean]("xpath_boolean"),
 
 // datetime functions
 expression[AddMonths]("add_months"),

http://git-wip-us.apache.org/repos/asf/spark/blob/bb4b0419/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
--
diff --git 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
new file mode 100644
index 000..2a5256c
--- /dev/null
+++ 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
@@ -0,0 +1,58 @@
+/*
+ * 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.expressions.xml
+
+import org.apache.spark.sql.catalyst.expressions._
+import org.apache.spark.sql.catalyst.expressions.codegen.CodegenFallback
+import org.apache.spark.sql.types.{AbstractDataType, BooleanType, DataType, 
StringType}
+import org.apache.spark.unsafe.types.UTF8String
+
+
+@ExpressionDescription(
+  usage = "_FUNC_(xml, xpath) - Evaluates a boolean xpath 

spark git commit: [SPARK-16274][SQL] Implement xpath_boolean

[wenchen]

Repository: spark
Updated Branches:
  refs/heads/master 831a04f5d -> d3af6731f


[SPARK-16274][SQL] Implement xpath_boolean

## What changes were proposed in this pull request?
This patch implements xpath_boolean expression for Spark SQL, a xpath function 
that returns true or false. The implementation is modelled after Hive's 
xpath_boolean, except that how the expression handles null inputs. Hive throws 
a NullPointerException at runtime if either of the input is null. This 
implementation returns null if either of the input is null.

## How was this patch tested?
Created two new test suites. One for unit tests covering the expression, and 
the other for end-to-end test in SQL.

Author: petermaxlee 

Closes #13964 from petermaxlee/SPARK-16274.


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/d3af6731
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/d3af6731
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/d3af6731

Branch: refs/heads/master
Commit: d3af6731fa270842818ed91d6b4d14708ddae2db
Parents: 831a04f
Author: petermaxlee 
Authored: Thu Jun 30 09:27:48 2016 +0800
Committer: Wenchen Fan 
Committed: Thu Jun 30 09:27:48 2016 +0800

--
 .../catalyst/analysis/FunctionRegistry.scala|  2 +
 .../catalyst/expressions/xml/XPathBoolean.scala | 58 +++
 .../expressions/xml/XPathExpressionSuite.scala  | 61 
 .../apache/spark/sql/XmlFunctionsSuite.scala| 32 ++
 .../spark/sql/hive/HiveSessionCatalog.scala |  2 +-
 5 files changed, 154 insertions(+), 1 deletion(-)
--


http://git-wip-us.apache.org/repos/asf/spark/blob/d3af6731/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
--
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 0bde48c..3f9227a 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
@@ -25,6 +25,7 @@ import org.apache.spark.sql.AnalysisException
 import org.apache.spark.sql.catalyst.analysis.FunctionRegistry.FunctionBuilder
 import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.catalyst.expressions.aggregate._
+import org.apache.spark.sql.catalyst.expressions.xml._
 import org.apache.spark.sql.catalyst.util.StringKeyHashMap
 
 
@@ -301,6 +302,7 @@ object FunctionRegistry {
 expression[UnBase64]("unbase64"),
 expression[Unhex]("unhex"),
 expression[Upper]("upper"),
+expression[XPathBoolean]("xpath_boolean"),
 
 // datetime functions
 expression[AddMonths]("add_months"),

http://git-wip-us.apache.org/repos/asf/spark/blob/d3af6731/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
--
diff --git 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
new file mode 100644
index 000..2a5256c
--- /dev/null
+++ 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/XPathBoolean.scala
@@ -0,0 +1,58 @@
+/*
+ * 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.expressions.xml
+
+import org.apache.spark.sql.catalyst.expressions._
+import org.apache.spark.sql.catalyst.expressions.codegen.CodegenFallback
+import org.apache.spark.sql.types.{AbstractDataType, BooleanType, DataType, 
StringType}
+import org.apache.spark.unsafe.types.UTF8String
+
+
+@ExpressionDescription(
+  usage = "_FUNC_(xml, xpath) - Evaluates a boolean xpath expression.",
+  extended = "> SELECT