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From j..@apache.org
Subject [4/5] drill git commit: DRILL-4967: Adding template_name to source code generated using freemarker template.
Date Sun, 30 Oct 2016 15:23:24 GMT
DRILL-4967: Adding template_name to source code generated using freemarker template.

close apache/drill#629


Project: http://git-wip-us.apache.org/repos/asf/drill/repo
Commit: http://git-wip-us.apache.org/repos/asf/drill/commit/2081d76c
Tree: http://git-wip-us.apache.org/repos/asf/drill/tree/2081d76c
Diff: http://git-wip-us.apache.org/repos/asf/drill/diff/2081d76c

Branch: refs/heads/master
Commit: 2081d76c9cfa33a796dba8a2676747edeccd9dfe
Parents: 00ee123
Author: Jinfeng Ni <jni@apache.org>
Authored: Thu Sep 8 15:50:43 2016 -0700
Committer: Jinfeng Ni <jni@apache.org>
Committed: Sat Oct 29 22:02:50 2016 -0700

----------------------------------------------------------------------
 .../main/codegen/templates/AbstractRecordWriter.java    |  3 +++
 .../templates/AggrBitwiseLogicalTypeFunctions.java      |  2 +-
 .../src/main/codegen/templates/AggrTypeFunctions1.java  |  4 +++-
 .../src/main/codegen/templates/AggrTypeFunctions2.java  |  4 +++-
 .../src/main/codegen/templates/AggrTypeFunctions3.java  |  4 +++-
 .../src/main/codegen/templates/CastDateDate.java        |  3 +++
 .../src/main/codegen/templates/CastDateVarChar.java     |  4 ++++
 .../src/main/codegen/templates/CastFunctions.java       |  4 ++++
 .../main/codegen/templates/CastFunctionsSrcVarLen.java  |  3 +++
 .../templates/CastFunctionsSrcVarLenTargetVarLen.java   |  4 ++++
 .../codegen/templates/CastFunctionsTargetVarLen.java    |  3 +++
 exec/java-exec/src/main/codegen/templates/CastHigh.java |  3 +++
 .../main/codegen/templates/CastIntervalInterval.java    |  3 +++
 .../src/main/codegen/templates/CastIntervalVarChar.java |  3 +++
 .../src/main/codegen/templates/CastVarCharDate.java     |  3 +++
 .../src/main/codegen/templates/CastVarCharInterval.java |  3 +++
 .../src/main/codegen/templates/ComparisonFunctions.java |  4 ++++
 .../main/codegen/templates/ConvertToNullableHolder.java |  4 ++++
 .../codegen/templates/CorrelationTypeFunctions.java     |  4 ++++
 .../main/codegen/templates/CountAggregateFunctions.java |  5 ++++-
 .../src/main/codegen/templates/CovarTypeFunctions.java  |  7 ++++---
 .../codegen/templates/DateIntervalAggrFunctions1.java   |  5 ++++-
 .../DateDateArithmeticFunctions.java                    |  4 ++++
 .../DateIntervalArithmeticFunctions.java                |  7 +++++++
 .../DateToCharFunctions.java                            |  4 ++++
 .../DateTruncFunctions.java                             |  4 ++++
 .../DateIntervalFunctionTemplates/Extract.java          |  4 ++++
 .../IntervalIntervalArithmetic.java                     |  3 +++
 .../IntervalNumericArithmetic.java                      |  3 +++
 .../ToDateTypeFunctions.java                            |  4 ++++
 .../ToTimeStampFunction.java                            |  4 +++-
 .../Decimal/CastDecimalDenseDecimalSparse.java          |  3 +++
 .../codegen/templates/Decimal/CastDecimalFloat.java     |  8 ++++++++
 .../main/codegen/templates/Decimal/CastDecimalInt.java  |  7 +++++++
 .../codegen/templates/Decimal/CastDecimalSimilar.java   |  4 ++++
 .../Decimal/CastDecimalSparseDecimalDense.java          |  4 ++++
 .../codegen/templates/Decimal/CastDecimalVarchar.java   |  8 ++++++++
 .../codegen/templates/Decimal/CastDownwardDecimal.java  | 12 ++++++++++++
 .../codegen/templates/Decimal/CastFloatDecimal.java     |  4 ++++
 .../main/codegen/templates/Decimal/CastIntDecimal.java  |  4 ++++
 .../codegen/templates/Decimal/CastSrcDecimalSimple.java | 12 ++++++++++++
 .../codegen/templates/Decimal/CastVarCharDecimal.java   |  8 ++++++++
 .../templates/Decimal/DecimalAggrTypeFunctions1.java    |  4 ++++
 .../templates/Decimal/DecimalAggrTypeFunctions2.java    |  4 ++++
 .../codegen/templates/Decimal/DecimalFunctions.java     |  7 +++++++
 .../src/main/codegen/templates/DirectoryExplorers.java  |  4 ++--
 .../main/codegen/templates/EventBasedRecordWriter.java  |  3 +++
 .../main/codegen/templates/IntervalAggrFunctions2.java  |  4 ++++
 .../main/codegen/templates/MathFunctionTemplates.java   |  3 +++
 .../src/main/codegen/templates/MathFunctions.java       |  3 +++
 .../src/main/codegen/templates/NewValueFunctions.java   |  3 +++
 .../src/main/codegen/templates/NullOperator.java        |  3 +++
 .../codegen/templates/NumericFunctionsTemplates.java    |  3 +++
 .../main/codegen/templates/NumericToCharFunctions.java  |  3 +++
 .../src/main/codegen/templates/ParquetTypeHelper.java   |  4 ++++
 .../src/main/codegen/templates/RecordValueAccessor.java |  4 ++++
 .../src/main/codegen/templates/RecordWriter.java        |  4 ++++
 .../src/main/codegen/templates/SqlAccessors.java        |  3 +++
 .../src/main/codegen/templates/SumZeroAggr.java         |  4 ++--
 .../src/main/codegen/templates/TypeHelper.java          |  3 +++
 .../main/codegen/templates/VarCharAggrFunctions1.java   |  4 +++-
 .../src/main/codegen/templates/AbstractFieldReader.java |  3 +++
 exec/vector/src/main/codegen/templates/BaseReader.java  |  4 +++-
 .../src/main/codegen/templates/BasicTypeHelper.java     |  4 +++-
 .../src/main/codegen/templates/ComplexReaders.java      |  4 +++-
 exec/vector/src/main/codegen/templates/NullReader.java  |  4 +++-
 exec/vector/src/main/codegen/templates/UnionReader.java |  3 +++
 .../vector/src/main/codegen/templates/ValueHolders.java |  3 +++
 68 files changed, 269 insertions(+), 19 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/AbstractRecordWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/AbstractRecordWriter.java b/exec/java-exec/src/main/codegen/templates/AbstractRecordWriter.java
index 13f7482..83b811e 100644
--- a/exec/java-exec/src/main/codegen/templates/AbstractRecordWriter.java
+++ b/exec/java-exec/src/main/codegen/templates/AbstractRecordWriter.java
@@ -33,6 +33,9 @@ import org.apache.drill.exec.vector.complex.reader.FieldReader;
 import java.io.IOException;
 import java.lang.UnsupportedOperationException;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 public abstract class AbstractRecordWriter implements RecordWriter {
 
   private Accessor newPartitionVector;

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/AggrBitwiseLogicalTypeFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/AggrBitwiseLogicalTypeFunctions.java b/exec/java-exec/src/main/codegen/templates/AggrBitwiseLogicalTypeFunctions.java
index 3453058..b6d3e73 100644
--- a/exec/java-exec/src/main/codegen/templates/AggrBitwiseLogicalTypeFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/AggrBitwiseLogicalTypeFunctions.java
@@ -27,7 +27,7 @@
 <#-- A utility class that is used to generate java code for aggr functions bit_and / bit_or -->
 
 /*
- * This class is automatically generated from AggrBitwiseLogicalTypes.tdd using FreeMarker.
+ * This class is generated using freemarker and the ${.template_name} template.
  */
 
 package org.apache.drill.exec.expr.fn.impl.gaggr;

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions1.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions1.java b/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions1.java
index 1360f66..b363cd1 100644
--- a/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions1.java
+++ b/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions1.java
@@ -24,7 +24,9 @@
 
 <#include "/@includes/license.ftl" />
 
-// Source code generated using FreeMarker template ${.template_name}
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 <#-- A utility class that is used to generate java code for aggr functions that maintain a single -->
 <#-- running counter to hold the result.  This includes: MIN, MAX, SUM. -->

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions2.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions2.java b/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions2.java
index fe76cbe..7c396d9 100644
--- a/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions2.java
+++ b/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions2.java
@@ -24,7 +24,9 @@
 
 <#include "/@includes/license.ftl" />
 
-// Source code generated using FreeMarker template ${.template_name}
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 <#-- A utility class that is used to generate java code for aggr functions that maintain a sum -->
 <#-- and a running count.  For now, this includes: AVG. -->

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions3.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions3.java b/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions3.java
index ee158bd..9b73418 100644
--- a/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions3.java
+++ b/exec/java-exec/src/main/codegen/templates/AggrTypeFunctions3.java
@@ -24,7 +24,9 @@
 
 <#include "/@includes/license.ftl" />
 
-// Source code generated using FreeMarker template ${.template_name}
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 <#-- A utility class that is used to generate java code for aggr functions such as stddev, variance -->
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastDateDate.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastDateDate.java b/exec/java-exec/src/main/codegen/templates/CastDateDate.java
index c686917..21e9c21 100644
--- a/exec/java-exec/src/main/codegen/templates/CastDateDate.java
+++ b/exec/java-exec/src/main/codegen/templates/CastDateDate.java
@@ -41,6 +41,9 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(
         <#if type.to == "Date">

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastDateVarChar.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastDateVarChar.java b/exec/java-exec/src/main/codegen/templates/CastDateVarChar.java
index 0c31b96..7005977 100644
--- a/exec/java-exec/src/main/codegen/templates/CastDateVarChar.java
+++ b/exec/java-exec/src/main/codegen/templates/CastDateVarChar.java
@@ -47,6 +47,10 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL, 
   costCategory = FunctionCostCategory.COMPLEX)

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastFunctions.java b/exec/java-exec/src/main/codegen/templates/CastFunctions.java
index 4e0b4d2..f68da06 100644
--- a/exec/java-exec/src/main/codegen/templates/CastFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/CastFunctions.java
@@ -38,6 +38,10 @@ import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc{

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLen.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLen.java b/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLen.java
index 85768de..6f2266b 100644
--- a/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLen.java
+++ b/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLen.java
@@ -44,6 +44,9 @@ import org.apache.drill.exec.record.RecordBatch;
 import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc{

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLenTargetVarLen.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLenTargetVarLen.java b/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLenTargetVarLen.java
index 15d4436..4524f5b 100644
--- a/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLenTargetVarLen.java
+++ b/exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLenTargetVarLen.java
@@ -41,6 +41,10 @@ import org.apache.drill.exec.record.RecordBatch;
 import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc{

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastFunctionsTargetVarLen.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastFunctionsTargetVarLen.java b/exec/java-exec/src/main/codegen/templates/CastFunctionsTargetVarLen.java
index 0d6b76a..2a318a6 100644
--- a/exec/java-exec/src/main/codegen/templates/CastFunctionsTargetVarLen.java
+++ b/exec/java-exec/src/main/codegen/templates/CastFunctionsTargetVarLen.java
@@ -42,6 +42,9 @@ import org.apache.drill.exec.record.RecordBatch;
 import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc{

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastHigh.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastHigh.java b/exec/java-exec/src/main/codegen/templates/CastHigh.java
index 082417c..a3f9c91 100644
--- a/exec/java-exec/src/main/codegen/templates/CastHigh.java
+++ b/exec/java-exec/src/main/codegen/templates/CastHigh.java
@@ -33,6 +33,9 @@ import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 public class CastHighFunctions {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(CastHighFunctions.class);
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastIntervalInterval.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastIntervalInterval.java b/exec/java-exec/src/main/codegen/templates/CastIntervalInterval.java
index dcc8bc7..ab3e378 100644
--- a/exec/java-exec/src/main/codegen/templates/CastIntervalInterval.java
+++ b/exec/java-exec/src/main/codegen/templates/CastIntervalInterval.java
@@ -43,6 +43,9 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}To${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastIntervalVarChar.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastIntervalVarChar.java b/exec/java-exec/src/main/codegen/templates/CastIntervalVarChar.java
index ebc6005..6dedca7 100644
--- a/exec/java-exec/src/main/codegen/templates/CastIntervalVarChar.java
+++ b/exec/java-exec/src/main/codegen/templates/CastIntervalVarChar.java
@@ -46,6 +46,9 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}To${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastVarCharDate.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastVarCharDate.java b/exec/java-exec/src/main/codegen/templates/CastVarCharDate.java
index 68f9b8c..4c51ba8 100644
--- a/exec/java-exec/src/main/codegen/templates/CastVarCharDate.java
+++ b/exec/java-exec/src/main/codegen/templates/CastVarCharDate.java
@@ -43,6 +43,9 @@ import org.apache.drill.exec.expr.fn.impl.DateUtility;
 import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(names = {"cast${type.to?upper_case}", "${type.alias}"}, scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL, 
   costCategory = FunctionCostCategory.COMPLEX)

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CastVarCharInterval.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CastVarCharInterval.java b/exec/java-exec/src/main/codegen/templates/CastVarCharInterval.java
index 1304f63..d8b2024 100644
--- a/exec/java-exec/src/main/codegen/templates/CastVarCharInterval.java
+++ b/exec/java-exec/src/main/codegen/templates/CastVarCharInterval.java
@@ -43,6 +43,9 @@ import org.apache.drill.exec.expr.fn.impl.DateUtility;
 import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}To${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/ComparisonFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/ComparisonFunctions.java b/exec/java-exec/src/main/codegen/templates/ComparisonFunctions.java
index aed10a2..633bb56 100644
--- a/exec/java-exec/src/main/codegen/templates/ComparisonFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/ComparisonFunctions.java
@@ -169,6 +169,10 @@ import org.apache.drill.exec.record.RecordBatch;
 import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 public class GCompare${leftTypeBase}Vs${rightTypeBase} {
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/ConvertToNullableHolder.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/ConvertToNullableHolder.java b/exec/java-exec/src/main/codegen/templates/ConvertToNullableHolder.java
index 045c919..cb67251 100644
--- a/exec/java-exec/src/main/codegen/templates/ConvertToNullableHolder.java
+++ b/exec/java-exec/src/main/codegen/templates/ConvertToNullableHolder.java
@@ -31,6 +31,10 @@ import org.apache.drill.exec.expr.DrillSimpleFunc;
 import org.apache.drill.exec.expr.annotations.*;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 
 <#if minor.class.startsWith("Decimal")>
 @FunctionTemplate(name = "convertToNullable${minor.class?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_MAX_SCALE, nulls = FunctionTemplate.NullHandling.INTERNAL)

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CorrelationTypeFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CorrelationTypeFunctions.java b/exec/java-exec/src/main/codegen/templates/CorrelationTypeFunctions.java
index 2a94730..133a17a 100644
--- a/exec/java-exec/src/main/codegen/templates/CorrelationTypeFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/CorrelationTypeFunctions.java
@@ -61,6 +61,10 @@ import org.apache.drill.exec.expr.holders.NullableFloat4Holder;
 import org.apache.drill.exec.expr.holders.Float8Holder;
 import org.apache.drill.exec.expr.holders.Float4Holder;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 
 public class ${aggrtype.className}Functions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CountAggregateFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CountAggregateFunctions.java b/exec/java-exec/src/main/codegen/templates/CountAggregateFunctions.java
index 71ac6a7..b32bb28 100644
--- a/exec/java-exec/src/main/codegen/templates/CountAggregateFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/CountAggregateFunctions.java
@@ -26,7 +26,6 @@ import java.lang.Override;
 
 <#include "/@includes/license.ftl" />
 
-// Source code generated using FreeMarker template ${.template_name}
 
 package org.apache.drill.exec.expr.fn.impl.gaggr;
 
@@ -38,6 +37,10 @@ import org.apache.drill.exec.expr.annotations.Param;
 import org.apache.drill.exec.expr.annotations.Workspace;
 import org.apache.drill.exec.expr.holders.*;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 
 public class CountFunctions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/CovarTypeFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/CovarTypeFunctions.java b/exec/java-exec/src/main/codegen/templates/CovarTypeFunctions.java
index e3d2f4a..08f623d 100644
--- a/exec/java-exec/src/main/codegen/templates/CovarTypeFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/CovarTypeFunctions.java
@@ -26,9 +26,6 @@
 
 <#-- A utility class that is used to generate java code for covariance functions -->
 
-/*
- * This class is automatically generated from CovarType.tdd using FreeMarker.
- */
 
 package org.apache.drill.exec.expr.fn.impl.gaggr;
 
@@ -61,6 +58,10 @@ import org.apache.drill.exec.expr.holders.NullableFloat4Holder;
 import org.apache.drill.exec.expr.holders.Float8Holder;
 import org.apache.drill.exec.expr.holders.Float4Holder;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 
 public class ${aggrtype.className}Functions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalAggrFunctions1.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalAggrFunctions1.java b/exec/java-exec/src/main/codegen/templates/DateIntervalAggrFunctions1.java
index 7480842..b2a0525 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalAggrFunctions1.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalAggrFunctions1.java
@@ -24,7 +24,6 @@
 
 <#include "/@includes/license.ftl" />
 
-// Source code generated using FreeMarker template ${.template_name}
 
 <#-- A utility class that is used to generate java code for aggr functions for Date, Time, Interval types -->
 <#--  that maintain a single running counter to hold the result.  This includes: MIN, MAX, SUM, COUNT. -->
@@ -39,6 +38,10 @@ import org.apache.drill.exec.expr.annotations.Param;
 import org.apache.drill.exec.expr.annotations.Workspace;
 import org.apache.drill.exec.expr.holders.*;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 
 public class ${aggrtype.className}DateTypeFunctions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateDateArithmeticFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateDateArithmeticFunctions.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateDateArithmeticFunctions.java
index 5fb2136..04eb327 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateDateArithmeticFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateDateArithmeticFunctions.java
@@ -39,6 +39,10 @@ import org.apache.drill.exec.record.RecordBatch;
 
 import io.netty.buffer.ByteBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 public class G${type}Arithmetic {
 @SuppressWarnings("unused")

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateIntervalArithmeticFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateIntervalArithmeticFunctions.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateIntervalArithmeticFunctions.java
index 50d869e..57e7f68 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateIntervalArithmeticFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateIntervalArithmeticFunctions.java
@@ -43,6 +43,9 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 public class ${datetype}${intervaltype}Functions {
 
@@ -159,6 +162,10 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 public class ${datetype}${intervaltype}Functions {
 <#macro timeIntervalArithmeticBlock left right temp op output intervaltype>
     <#if intervaltype == "Int" || intervaltype == "BigInt">

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateToCharFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateToCharFunctions.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateToCharFunctions.java
index 22c14de..6ef2d3e 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateToCharFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateToCharFunctions.java
@@ -42,6 +42,10 @@ import org.apache.drill.exec.record.RecordBatch;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "to_char", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls = NullHandling.NULL_IF_NULL)
 public class G${type}ToChar implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateTruncFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateTruncFunctions.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateTruncFunctions.java
index ad2f4c8..702f717 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateTruncFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/DateTruncFunctions.java
@@ -37,6 +37,10 @@ import org.apache.drill.exec.record.RecordBatch;
 
 import io.netty.buffer.ByteBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 public class GDateTimeTruncateFunctions {
 
 <#list dateIntervalFunc.truncInputTypes as type> <#-- Start InputType Loop -->

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/Extract.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/Extract.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/Extract.java
index e205247..a64d655 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/Extract.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/Extract.java
@@ -29,6 +29,10 @@ import org.apache.drill.exec.expr.annotations.*;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 public class ${className} {
 
 <#list extract.fromTypes as fromUnit>

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalIntervalArithmetic.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalIntervalArithmetic.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalIntervalArithmetic.java
index 3a343e5..b248c35 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalIntervalArithmetic.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalIntervalArithmetic.java
@@ -41,6 +41,9 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 public class ${intervaltype}Functions {
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalNumericArithmetic.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalNumericArithmetic.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalNumericArithmetic.java
index 8198ce6..8a8e966 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalNumericArithmetic.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/IntervalNumericArithmetic.java
@@ -41,6 +41,9 @@ import org.joda.time.DateTimeZone;
 import org.joda.time.DateMidnight;
 import org.apache.drill.exec.expr.fn.impl.DateUtility;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 public class ${intervaltype}${numerictype}Functions {
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToDateTypeFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToDateTypeFunctions.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToDateTypeFunctions.java
index c2e5a37..3217617 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToDateTypeFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToDateTypeFunctions.java
@@ -37,6 +37,10 @@ import org.apache.drill.exec.expr.annotations.Param;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @FunctionTemplate(name = "to_${type?lower_case}" , scope = FunctionTemplate.FunctionScope.SIMPLE, nulls = NullHandling.NULL_IF_NULL)
 public class GTo${type} implements DrillSimpleFunc {
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToTimeStampFunction.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToTimeStampFunction.java b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToTimeStampFunction.java
index 4d1d093..44db9df 100644
--- a/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToTimeStampFunction.java
+++ b/exec/java-exec/src/main/codegen/templates/DateIntervalFunctionTemplates/ToTimeStampFunction.java
@@ -37,7 +37,9 @@ import org.apache.drill.exec.expr.annotations.Param;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
 
-// This class is generated using freemarker template ToTimeStampFunction.java
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 @FunctionTemplate(name = "to_timestamp" , scope = FunctionTemplate.FunctionScope.SIMPLE, nulls = NullHandling.NULL_IF_NULL)
 public class G${numerics}ToTimeStamp implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalDenseDecimalSparse.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalDenseDecimalSparse.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalDenseDecimalSparse.java
index a110ed7..dc26889 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalDenseDecimalSparse.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalDenseDecimalSparse.java
@@ -41,6 +41,9 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalFloat.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalFloat.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalFloat.java
index c85cc4f..c393255 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalFloat.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalFloat.java
@@ -39,6 +39,10 @@ import org.apache.drill.exec.expr.annotations.Workspace;
 import io.netty.buffer.ByteBuf;
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@@ -77,6 +81,10 @@ import org.apache.drill.exec.expr.annotations.Workspace;
 import io.netty.buffer.ByteBuf;
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalInt.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalInt.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalInt.java
index 318a8d8..a13f0e7 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalInt.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalInt.java
@@ -42,6 +42,9 @@ import org.apache.drill.exec.expr.annotations.Workspace;
 import io.netty.buffer.ByteBuf;
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@@ -82,6 +85,10 @@ import org.apache.drill.exec.expr.annotations.Workspace;
 import io.netty.buffer.ByteBuf;
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSimilar.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSimilar.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSimilar.java
index 5ab34ad..e0fba0a 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSimilar.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSimilar.java
@@ -44,6 +44,10 @@ import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc{

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSparseDecimalDense.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSparseDecimalDense.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSparseDecimalDense.java
index 62b3229..5ea8a8d 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSparseDecimalDense.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalSparseDecimalDense.java
@@ -42,6 +42,10 @@ import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc{

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalVarchar.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalVarchar.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalVarchar.java
index d9d15e1..c5ca782 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalVarchar.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastDecimalVarchar.java
@@ -46,6 +46,10 @@ import io.netty.buffer.SwappedByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@@ -127,6 +131,10 @@ import io.netty.buffer.ByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastDownwardDecimal.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastDownwardDecimal.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastDownwardDecimal.java
index d492392..467405e 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastDownwardDecimal.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastDownwardDecimal.java
@@ -43,6 +43,10 @@ import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@@ -116,6 +120,10 @@ import io.netty.buffer.ByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@@ -159,6 +167,10 @@ import io.netty.buffer.ByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastFloatDecimal.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastFloatDecimal.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastFloatDecimal.java
index f0775d8..7d7ec35 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastFloatDecimal.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastFloatDecimal.java
@@ -46,6 +46,10 @@ import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastIntDecimal.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastIntDecimal.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastIntDecimal.java
index 368eb8b..eb01566 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastIntDecimal.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastIntDecimal.java
@@ -42,6 +42,10 @@ import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastSrcDecimalSimple.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastSrcDecimalSimple.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastSrcDecimalSimple.java
index fd0aba4..fca6e99 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastSrcDecimalSimple.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastSrcDecimalSimple.java
@@ -44,6 +44,10 @@ import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@@ -148,6 +152,10 @@ import io.netty.buffer.ByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc{
@@ -248,6 +256,10 @@ import io.netty.buffer.ByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
 public class Cast${type.from}${type.to} implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/CastVarCharDecimal.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/CastVarCharDecimal.java b/exec/java-exec/src/main/codegen/templates/Decimal/CastVarCharDecimal.java
index e2dbaea..bb011cb 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/CastVarCharDecimal.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/CastVarCharDecimal.java
@@ -48,6 +48,10 @@ import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 <#if type.major == "VarCharDecimalSimple">
 @FunctionTemplate(name ="cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)
@@ -221,6 +225,10 @@ import io.netty.buffer.ByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 <#if type.major == "VarCharDecimalComplex">
 @FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.DECIMAL_CAST, nulls=NullHandling.NULL_IF_NULL)

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions1.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions1.java b/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions1.java
index 22339da..7737356 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions1.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions1.java
@@ -49,6 +49,10 @@ import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
 import io.netty.buffer.ByteBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 
 public class Decimal${aggrtype.className}Functions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions2.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions2.java b/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions2.java
index 5a1b04a..f885e08 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions2.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/DecimalAggrTypeFunctions2.java
@@ -50,6 +50,10 @@ import io.netty.buffer.DrillBuf;
 import org.apache.drill.exec.record.RecordBatch;
 import io.netty.buffer.ByteBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 
 public class Decimal${aggrtype.className}Functions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/Decimal/DecimalFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/Decimal/DecimalFunctions.java b/exec/java-exec/src/main/codegen/templates/Decimal/DecimalFunctions.java
index efa6354..a4bf06a 100644
--- a/exec/java-exec/src/main/codegen/templates/Decimal/DecimalFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/Decimal/DecimalFunctions.java
@@ -126,6 +126,9 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.DrillBuf;
 
 import java.nio.ByteBuffer;
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 @SuppressWarnings("unused")
 public class ${type.name}Functions {
@@ -1015,6 +1018,10 @@ import io.netty.buffer.ByteBuf;
 
 import java.nio.ByteBuffer;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 public class ${type.name}Functions {
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/DirectoryExplorers.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/DirectoryExplorers.java b/exec/java-exec/src/main/codegen/templates/DirectoryExplorers.java
index a47a541..f0101ca 100644
--- a/exec/java-exec/src/main/codegen/templates/DirectoryExplorers.java
+++ b/exec/java-exec/src/main/codegen/templates/DirectoryExplorers.java
@@ -33,8 +33,8 @@ import org.apache.drill.exec.expr.holders.VarCharHolder;
 
 import javax.inject.Inject;
 
-/**
- * This file is generated with Freemarker using the template exec/java-exec/src/main/codegen/templates/DirectoryExplorers.java
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
  */
 public class DirectoryExplorers {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(DirectoryExplorers.class);

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java b/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
index 584f4b6..a2428a7 100644
--- a/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
+++ b/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
@@ -38,6 +38,9 @@ import java.io.IOException;
 import java.util.List;
 import java.util.Map;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 
 /** Reads records from the RecordValueAccessor and writes into RecordWriter. */
 public class EventBasedRecordWriter {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/IntervalAggrFunctions2.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/IntervalAggrFunctions2.java b/exec/java-exec/src/main/codegen/templates/IntervalAggrFunctions2.java
index 6745097..8e7fed5 100644
--- a/exec/java-exec/src/main/codegen/templates/IntervalAggrFunctions2.java
+++ b/exec/java-exec/src/main/codegen/templates/IntervalAggrFunctions2.java
@@ -39,6 +39,10 @@ import org.apache.drill.exec.expr.annotations.Param;
 import org.apache.drill.exec.expr.annotations.Workspace;
 import org.apache.drill.exec.expr.holders.*;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 @SuppressWarnings("unused")
 
 public class ${aggrtype.className}IntervalTypeFunctions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/MathFunctionTemplates.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/MathFunctionTemplates.java b/exec/java-exec/src/main/codegen/templates/MathFunctionTemplates.java
index a1e0375..4bf7e16 100644
--- a/exec/java-exec/src/main/codegen/templates/MathFunctionTemplates.java
+++ b/exec/java-exec/src/main/codegen/templates/MathFunctionTemplates.java
@@ -44,6 +44,9 @@ import org.apache.drill.exec.expr.annotations.Workspace;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 
 public class ${inputType.className}Functions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/MathFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/MathFunctions.java b/exec/java-exec/src/main/codegen/templates/MathFunctions.java
index ba5b76c..4144fcf 100644
--- a/exec/java-exec/src/main/codegen/templates/MathFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/MathFunctions.java
@@ -45,6 +45,9 @@ import org.apache.drill.exec.expr.fn.impl.StringFunctions;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 
 public class GMathFunctions{

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/NewValueFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/NewValueFunctions.java b/exec/java-exec/src/main/codegen/templates/NewValueFunctions.java
index d0e99d4..3b1d86f 100644
--- a/exec/java-exec/src/main/codegen/templates/NewValueFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/NewValueFunctions.java
@@ -34,6 +34,9 @@ import javax.inject.Inject;
 import io.netty.buffer.DrillBuf;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 public class GNewValueFunctions {
 <#list vv.types as type>
 <#if type.major == "Fixed" || type.major = "Bit">

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/NullOperator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/NullOperator.java b/exec/java-exec/src/main/codegen/templates/NullOperator.java
index 1c9ad32..9a92aac 100644
--- a/exec/java-exec/src/main/codegen/templates/NullOperator.java
+++ b/exec/java-exec/src/main/codegen/templates/NullOperator.java
@@ -33,6 +33,9 @@ import org.apache.drill.exec.expr.annotations.*;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 public class ${className} {
 
   @FunctionTemplate(names = {"isnull", "is null"}, scope = FunctionTemplate.FunctionScope.SIMPLE, nulls = FunctionTemplate.NullHandling.INTERNAL)

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/NumericFunctionsTemplates.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/NumericFunctionsTemplates.java b/exec/java-exec/src/main/codegen/templates/NumericFunctionsTemplates.java
index 4d06c68..e8ff431 100644
--- a/exec/java-exec/src/main/codegen/templates/NumericFunctionsTemplates.java
+++ b/exec/java-exec/src/main/codegen/templates/NumericFunctionsTemplates.java
@@ -60,6 +60,9 @@ import org.apache.drill.exec.expr.holders.VarCharHolder;
 import org.apache.drill.exec.expr.holders.NullableVarCharHolder;
 import org.apache.drill.exec.record.RecordBatch;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 
 public class ${numericFunc.className}Functions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/NumericToCharFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/NumericToCharFunctions.java b/exec/java-exec/src/main/codegen/templates/NumericToCharFunctions.java
index 8bfe512..78f4f7d 100644
--- a/exec/java-exec/src/main/codegen/templates/NumericToCharFunctions.java
+++ b/exec/java-exec/src/main/codegen/templates/NumericToCharFunctions.java
@@ -45,6 +45,9 @@ import io.netty.buffer.DrillBuf;
 import java.text.NumberFormat;
 import java.text.DecimalFormat;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 @FunctionTemplate(name = "to_char", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls = NullHandling.NULL_IF_NULL)
 public class G${type}ToChar implements DrillSimpleFunc {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/ParquetTypeHelper.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/ParquetTypeHelper.java b/exec/java-exec/src/main/codegen/templates/ParquetTypeHelper.java
index ecd1d3e..7584b82 100644
--- a/exec/java-exec/src/main/codegen/templates/ParquetTypeHelper.java
+++ b/exec/java-exec/src/main/codegen/templates/ParquetTypeHelper.java
@@ -39,6 +39,10 @@ import org.apache.parquet.schema.Type.Repetition;
 import java.util.HashMap;
 import java.util.Map;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 public class ParquetTypeHelper {
   private static Map<MinorType,PrimitiveTypeName> typeMap;
   private static Map<DataMode,Repetition> modeMap;

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/RecordValueAccessor.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/RecordValueAccessor.java b/exec/java-exec/src/main/codegen/templates/RecordValueAccessor.java
index b91d383..5e7d87c 100644
--- a/exec/java-exec/src/main/codegen/templates/RecordValueAccessor.java
+++ b/exec/java-exec/src/main/codegen/templates/RecordValueAccessor.java
@@ -28,6 +28,10 @@ import org.apache.drill.exec.expr.TypeHelper;
 import org.apache.drill.exec.expr.holders.*;
 import org.apache.drill.exec.vector.*;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 /** Wrapper around VectorAccessible to iterate over the records and fetch fields within a record. */
 public class RecordValueAccessor {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(RecordValueAccessor.class);

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/RecordWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/RecordWriter.java b/exec/java-exec/src/main/codegen/templates/RecordWriter.java
index 24a94c4..4c7a129 100644
--- a/exec/java-exec/src/main/codegen/templates/RecordWriter.java
+++ b/exec/java-exec/src/main/codegen/templates/RecordWriter.java
@@ -31,6 +31,10 @@ import java.io.IOException;
 import java.lang.UnsupportedOperationException;
 import java.util.Map;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
+
 /** RecordWriter interface. */
 public interface RecordWriter {
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/SqlAccessors.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/SqlAccessors.java b/exec/java-exec/src/main/codegen/templates/SqlAccessors.java
index 283c209..49a91c2 100644
--- a/exec/java-exec/src/main/codegen/templates/SqlAccessors.java
+++ b/exec/java-exec/src/main/codegen/templates/SqlAccessors.java
@@ -35,6 +35,9 @@ package org.apache.drill.exec.vector.accessor;
 
 <#include "/@includes/vv_imports.ftl" />
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 public class ${name}Accessor extends AbstractSqlAccessor {
  <#if mode == "Nullable">

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/SumZeroAggr.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/SumZeroAggr.java b/exec/java-exec/src/main/codegen/templates/SumZeroAggr.java
index 87393f7..bc16b0c 100644
--- a/exec/java-exec/src/main/codegen/templates/SumZeroAggr.java
+++ b/exec/java-exec/src/main/codegen/templates/SumZeroAggr.java
@@ -24,8 +24,8 @@
 
 <#include "/@includes/license.ftl" />
 
-/* 
- * This class is automatically generated from SumZero.tdd using FreeMarker.
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
  */
 
 package org.apache.drill.exec.expr.fn.impl.gaggr;

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/TypeHelper.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/TypeHelper.java b/exec/java-exec/src/main/codegen/templates/TypeHelper.java
index 3f7b6e6..8390e30 100644
--- a/exec/java-exec/src/main/codegen/templates/TypeHelper.java
+++ b/exec/java-exec/src/main/codegen/templates/TypeHelper.java
@@ -35,6 +35,9 @@ import org.apache.drill.exec.vector.accessor.*;
 import org.apache.drill.exec.vector.complex.RepeatedMapVector;
 import org.apache.drill.exec.util.CallBack;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 public class TypeHelper extends BasicTypeHelper {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(TypeHelper.class);
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/java-exec/src/main/codegen/templates/VarCharAggrFunctions1.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/VarCharAggrFunctions1.java b/exec/java-exec/src/main/codegen/templates/VarCharAggrFunctions1.java
index 11b20b1..dd73f79 100644
--- a/exec/java-exec/src/main/codegen/templates/VarCharAggrFunctions1.java
+++ b/exec/java-exec/src/main/codegen/templates/VarCharAggrFunctions1.java
@@ -24,7 +24,6 @@
 
 <#include "/@includes/license.ftl" />
 
-// Source code generated using FreeMarker template ${.template_name}
 
 <#-- A utility class that is used to generate java code for aggr functions that maintain a single -->
 <#-- running counter to hold the result.  This includes: MIN, MAX, COUNT. -->
@@ -46,6 +45,9 @@ import org.apache.drill.exec.record.RecordBatch;
 
 import io.netty.buffer.ByteBuf;
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 
 public class ${aggrtype.className}VarBytesFunctions {

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/vector/src/main/codegen/templates/AbstractFieldReader.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/AbstractFieldReader.java b/exec/vector/src/main/codegen/templates/AbstractFieldReader.java
index 2b7b305..289aa60 100644
--- a/exec/vector/src/main/codegen/templates/AbstractFieldReader.java
+++ b/exec/vector/src/main/codegen/templates/AbstractFieldReader.java
@@ -26,6 +26,9 @@ package org.apache.drill.exec.vector.complex.impl;
 
 <#include "/@includes/vv_imports.ftl" />
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 abstract class AbstractFieldReader extends AbstractBaseReader implements FieldReader{
   

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/vector/src/main/codegen/templates/BaseReader.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/BaseReader.java b/exec/vector/src/main/codegen/templates/BaseReader.java
index 78f32f4..771f9b2 100644
--- a/exec/vector/src/main/codegen/templates/BaseReader.java
+++ b/exec/vector/src/main/codegen/templates/BaseReader.java
@@ -27,7 +27,9 @@ package org.apache.drill.exec.vector.complex.reader;
 <#include "/@includes/vv_imports.ftl" />
 
 
-
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 public interface BaseReader extends Positionable{
   MajorType getType();

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/vector/src/main/codegen/templates/BasicTypeHelper.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/BasicTypeHelper.java b/exec/vector/src/main/codegen/templates/BasicTypeHelper.java
index a618cfd..452c331 100644
--- a/exec/vector/src/main/codegen/templates/BasicTypeHelper.java
+++ b/exec/vector/src/main/codegen/templates/BasicTypeHelper.java
@@ -31,7 +31,9 @@ import org.apache.drill.common.types.TypeProtos.MajorType;
 import org.apache.drill.exec.record.MaterializedField;
 import org.apache.drill.exec.vector.complex.RepeatedMapVector;
 import org.apache.drill.exec.util.CallBack;
-
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 public class BasicTypeHelper {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(BasicTypeHelper.class);
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/vector/src/main/codegen/templates/ComplexReaders.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/ComplexReaders.java b/exec/vector/src/main/codegen/templates/ComplexReaders.java
index 607b71d..d662a6f 100644
--- a/exec/vector/src/main/codegen/templates/ComplexReaders.java
+++ b/exec/vector/src/main/codegen/templates/ComplexReaders.java
@@ -46,7 +46,9 @@ import org.apache.drill.exec.vector.complex.writer.BaseWriter.MapWriter;
 package org.apache.drill.exec.vector.complex.impl;
 
 <#include "/@includes/vv_imports.ftl" />
-
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 public class ${nullMode}${name}ReaderImpl extends AbstractFieldReader {
   

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/vector/src/main/codegen/templates/NullReader.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/NullReader.java b/exec/vector/src/main/codegen/templates/NullReader.java
index 62aa33e..4da7514 100644
--- a/exec/vector/src/main/codegen/templates/NullReader.java
+++ b/exec/vector/src/main/codegen/templates/NullReader.java
@@ -28,7 +28,9 @@ package org.apache.drill.exec.vector.complex.impl;
 
 import org.apache.drill.common.types.TypeProtos;
 
-
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 public class NullReader extends AbstractBaseReader implements FieldReader{
   

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/vector/src/main/codegen/templates/UnionReader.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/UnionReader.java b/exec/vector/src/main/codegen/templates/UnionReader.java
index 46a32ee..58485dd 100644
--- a/exec/vector/src/main/codegen/templates/UnionReader.java
+++ b/exec/vector/src/main/codegen/templates/UnionReader.java
@@ -29,6 +29,9 @@ package org.apache.drill.exec.vector.complex.impl;
 
 <#include "/@includes/vv_imports.ftl" />
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 @SuppressWarnings("unused")
 public class UnionReader extends AbstractFieldReader {
 

http://git-wip-us.apache.org/repos/asf/drill/blob/2081d76c/exec/vector/src/main/codegen/templates/ValueHolders.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/ValueHolders.java b/exec/vector/src/main/codegen/templates/ValueHolders.java
index 4151bbe..11607b4 100644
--- a/exec/vector/src/main/codegen/templates/ValueHolders.java
+++ b/exec/vector/src/main/codegen/templates/ValueHolders.java
@@ -29,6 +29,9 @@ package org.apache.drill.exec.expr.holders;
 
 <#include "/@includes/vv_imports.ftl" />
 
+/*
+ * This class is generated using freemarker and the ${.template_name} template.
+ */
 public final class ${className} implements ValueHolder{
   
   public static final MajorType TYPE = Types.${mode.name?lower_case}(MinorType.${minor.class?upper_case});


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