From 728d037ec64bb8da931772df99dd904393649952 Mon Sep 17 00:00:00 2001
From: Kalyan Rajpoot <rajputkalyan09@gmail.com>
Date: Wed, 12 May 2021 21:05:30 +0530
Subject: [PATCH] case sensitive column support

---
 src/main/java/org/relique/jdbc/csv/ColumnName.java   |  2 +-
 src/main/java/org/relique/jdbc/csv/CsvReader.java    |  2 +-
 src/main/java/org/relique/jdbc/csv/CsvResultSet.java | 12 ++++++------
 .../java/org/relique/jdbc/csv/QueryEnvEntry.java     |  2 +-
 .../java/org/relique/jdbc/csv/SQLUserFunction.java   |  2 +-
 5 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/main/java/org/relique/jdbc/csv/ColumnName.java b/src/main/java/org/relique/jdbc/csv/ColumnName.java
index 7e99b71a..fadff765 100644
--- a/src/main/java/org/relique/jdbc/csv/ColumnName.java
+++ b/src/main/java/org/relique/jdbc/csv/ColumnName.java
@@ -29,7 +29,7 @@ class ColumnName extends Expression
 
 	public ColumnName(String columnName)
 	{
-		this.columnName = columnName.toUpperCase();
+		this.columnName = columnName;
 	}
 
 	public String getColumnName()
diff --git a/src/main/java/org/relique/jdbc/csv/CsvReader.java b/src/main/java/org/relique/jdbc/csv/CsvReader.java
index 4d1dfca0..2761898d 100644
--- a/src/main/java/org/relique/jdbc/csv/CsvReader.java
+++ b/src/main/java/org/relique/jdbc/csv/CsvReader.java
@@ -158,7 +158,7 @@ private String[] getUpperColumnNames()
 			String columnNames[] = getColumnNames();
 			upperColumnNames = new String[columnNames.length];
 			for (int i = 0; i < upperColumnNames.length; i++)
-				upperColumnNames[i] = columnNames[i].toUpperCase();
+				upperColumnNames[i] = columnNames[i];
 		}
 		return upperColumnNames;
 	}
diff --git a/src/main/java/org/relique/jdbc/csv/CsvResultSet.java b/src/main/java/org/relique/jdbc/csv/CsvResultSet.java
index 1b344ea0..594b7510 100644
--- a/src/main/java/org/relique/jdbc/csv/CsvResultSet.java
+++ b/src/main/java/org/relique/jdbc/csv/CsvResultSet.java
@@ -272,7 +272,7 @@ protected CsvResultSet(CsvStatement statement,
 		HashSet<String> allReaderColumns = new HashSet<String>();
 		for (int i = 0; i < columnNames.length; i++)
 		{
-			String columnName = columnNames[i].toUpperCase();
+			String columnName = columnNames[i];
 			allReaderColumns.add(columnName);
 			if (tableName != null)
 				allReaderColumns.add(tableName.toUpperCase() + "." + columnName);
@@ -504,7 +504,7 @@ protected CsvResultSet(CsvStatement statement,
 						List<String> copy = new LinkedList<String>();
 						for (String usedColumn : exprUsedColumns)
 						{
-							if (allReaderColumns.contains(usedColumn.toUpperCase()))
+							if (allReaderColumns.contains(usedColumn))
 								copy.add(usedColumn);
 						}
 						exprUsedColumns = copy;
@@ -1014,12 +1014,12 @@ private Map<String, Object> updateRecordEnvironment(boolean thereWasAnAnswer) th
 			Object[] o = queryEnvironment.get(i);
 			String key = (String) o[0];
 			Object value = ((Expression) o[1]).eval(recordEnvironment);
-			objectEnvironment.put(key.toUpperCase(), value);
+			objectEnvironment.put(key, value);
 		}
 		for (int i=0; i<usedColumns.size(); i++)
 		{
 			String key = usedColumns.get(i);
-			key = key.toUpperCase();
+			//key = key.toUpperCase();
 			if (recordEnvironment.containsKey(key))
 					objectEnvironment.put(key, recordEnvironment.get(key));
 		}
@@ -1436,7 +1436,7 @@ public ResultSetMetaData getMetaData() throws SQLException
 			for(int i=0; i<readerTypeNames.length; i++)
 			{
 				Object literal = StringConverter.getLiteralForTypeName(readerTypeNames[i]);
-				String columnName = readerColumnNames[i].toUpperCase();
+				String columnName = readerColumnNames[i];
 				env.put(columnName, literal);
 				allReaderColumns.add(columnName);
 				if (tableName != null)
@@ -1460,7 +1460,7 @@ public ResultSetMetaData getMetaData() throws SQLException
 				columnNames[i] = (String)o[0];
 				for (int j = 0; j < readerColumnNames.length; j++)
 				{
-					if (columnNames[i].equalsIgnoreCase(readerColumnNames[j]))
+					if (columnNames[i].equals(readerColumnNames[j]))
 					{
 						/*
 						 * Use original case of column name in CSV file.
diff --git a/src/main/java/org/relique/jdbc/csv/QueryEnvEntry.java b/src/main/java/org/relique/jdbc/csv/QueryEnvEntry.java
index fdeb39cd..cc0f7f1a 100644
--- a/src/main/java/org/relique/jdbc/csv/QueryEnvEntry.java
+++ b/src/main/java/org/relique/jdbc/csv/QueryEnvEntry.java
@@ -28,7 +28,7 @@ class QueryEnvEntry extends Expression
 
 	public QueryEnvEntry(String fieldName, Expression exp)
 	{
-		this.key = fieldName.toUpperCase();
+		this.key = fieldName;
 		this.expression = exp;
 	}
 
diff --git a/src/main/java/org/relique/jdbc/csv/SQLUserFunction.java b/src/main/java/org/relique/jdbc/csv/SQLUserFunction.java
index 379c0bea..b45ba5ba 100644
--- a/src/main/java/org/relique/jdbc/csv/SQLUserFunction.java
+++ b/src/main/java/org/relique/jdbc/csv/SQLUserFunction.java
@@ -34,7 +34,7 @@ class SQLUserFunction extends Expression
 
 	public SQLUserFunction(String name, List<Expression> expressions)
 	{
-		this.name = name.toUpperCase();
+		this.name = name;
 		this.expressions = expressions;
 	}