rename the functions

Author: AbhishekKumar9984

database-commons/src/main/java/io/cdap/plugin/db/source/AbstractDBSource.java

@@ -167,7 +167,7 @@ public Schema getSchema() throws SQLException {
       executeInitQueries(connection, sourceConfig.getInitQueries());
       String query = sourceConfig.getImportQuery();
       if (!Strings.isNullOrEmpty(query)) {
-        return loadSchemaFromDB(connection, query);
+        return loadSchemaFromDBwithQuery(connection, query);
       } else if (!Strings.isNullOrEmpty(sourceConfig.getTableName())) {
         List<Schema.Field> fields = getSchemaReader().getSchemaFields(connection, sourceConfig.getTableName());
         return Schema.recordOf("schema", fields);
@@ -177,7 +177,7 @@ public Schema getSchema() throws SQLException {
     }
   }
 
-  private Schema getTableSchemaFromMetadata(Connection connection, String tableName) throws SQLException {
+  private Schema loadSchemaFromDBwithTableName(Connection connection, String tableName) throws SQLException {
     DatabaseMetaData metaData = connection.getMetaData();
 
     String schema = null;
@@ -207,7 +207,7 @@ private Schema getTableSchemaFromMetadata(Connection connection, String tableNam
   }
 
 
-  private Schema loadSchemaFromDB(Connection connection, String query) throws SQLException {
+  private Schema loadSchemaFromDBwithQuery(Connection connection, String query) throws SQLException {
     Statement statement = connection.createStatement();
     statement.setMaxRows(1);
     if (query.contains("$CONDITIONS")) {
@@ -238,9 +238,9 @@ private Schema loadSchemaFromDB(Class<? extends Driver> driverClass)
       String importQuery = sourceConfig.getImportQuery();
       String tableName = sourceConfig.getTableName();
       if (!Strings.isNullOrEmpty(importQuery)) {
-        return loadSchemaFromDB(connection, importQuery);
+        return loadSchemaFromDBwithQuery(connection, importQuery);
       } else {
-        return getTableSchemaFromMetadata(connection, tableName);
+        return loadSchemaFromDBwithTableName(connection, tableName);
       }
     } catch (SQLException e) {
       // wrap exception to ensure SQLException-child instances not exposed to contexts without jdbc driver in classpath