Update godoc.

README.md

@@ -19,6 +19,7 @@ _Support for additional databases will be added in future jet releases._
    - [Benefits](#benefits)
    - [Dependencies](#dependencies)
    - [Versioning](#versioning)
+   - [License](#license)
 
 ## Features
  1) Type-safe SQL Builder
@@ -30,7 +31,8 @@ _Support for additional databases will be added in future jet releases._
         * UPDATE (SET, WHERE, RETURNING), 
         * DELETE (WHERE, RETURNING),
         * LOCK (IN, NOWAIT)
- 2) Auto-generated Data Model types - Go struct mapped to database type (table or enum)
+ 2) Auto-generated Data Model types - Go struct mapped to database type (table or enum), used to store
+ result of database queries.
  3) Query execution with mapping to arbitrary destination structure - destination structure can be 
  created by combining auto-generated data model types. 
 
@@ -150,7 +152,7 @@ Note that every column has a type. String column `Language.Name` and `Category.N
 string columns and expressions. `Actor.ActorID`, `FilmActor.ActorID`, `Film.Length` are integer columns 
 and can be compared only with integer columns and expressions.
 
-__How get parametrized SQL query?__
+__How to get parametrized SQL query?__
 ```go
 query, args, err := stmt.Sql()
 ```
@@ -524,10 +526,12 @@ To run the tests, additional dependencies are required:
 - `github.com/pkg/profile`
 - `gotest.tools/assert`
 
-## Contributing
 
 ## Versioning
 
 [SemVer](http://semver.org/) is used for versioning. For the versions available, see the [releases](https://github.com/go-jet/jet/releases). 
 
-## Licence
+## License
+
+Copyright 2019 Goran Bjelanovic  
+Licensed under the Apache License, Version 2.0.

column.go

@@ -103,7 +103,8 @@ func (c columnImpl) serialize(statement statementType, out *sqlBuilder, options
 }
 
 //------------------------------------------------------//
-// Dummy type for select * AllColumns
+
+// Redefined type to support list of columns as projection
 type ColumnList []Column
 
 // projection interface implementation
@@ -131,7 +132,8 @@ func (cl ColumnList) serializeForProjection(statement statementType, out *sqlBui
 	return nil
 }
 
-// column interface implementation
+// dummy column interface implementation
+
 func (cl ColumnList) Name() string                         { return "" }
 func (cl ColumnList) TableName() string                    { return "" }
 func (cl ColumnList) setTableName(name string)             {}

column_types.go

@@ -1,6 +1,5 @@
 package jet
 
-//------------------------------------------------------//
 type ColumnBool interface {
 	BoolExpression
 	column
@@ -37,6 +36,7 @@ func BoolColumn(name string) ColumnBool {
 }
 
 //------------------------------------------------------//
+
 type ColumnFloat interface {
 	FloatExpression
 	column
@@ -72,6 +72,7 @@ func FloatColumn(name string) ColumnFloat {
 }
 
 //------------------------------------------------------//
+
 type ColumnInteger interface {
 	IntegerExpression
 	column
@@ -106,6 +107,7 @@ func IntegerColumn(name string) ColumnInteger {
 }
 
 //------------------------------------------------------//
+
 type ColumnString interface {
 	StringExpression
 	column
@@ -140,6 +142,7 @@ func StringColumn(name string) ColumnString {
 }
 
 //------------------------------------------------------//
+
 type ColumnTime interface {
 	TimeExpression
 	column
@@ -207,6 +210,7 @@ func TimezColumn(name string) ColumnTimez {
 }
 
 //------------------------------------------------------//
+
 type ColumnTimestamp interface {
 	TimestampExpression
 	column
@@ -241,6 +245,7 @@ func TimestampColumn(name string) ColumnTimestamp {
 }
 
 //------------------------------------------------------//
+
 type ColumnTimestampz interface {
 	TimestampzExpression
 	column
@@ -275,6 +280,7 @@ func TimestampzColumn(name string) ColumnTimestampz {
 }
 
 //------------------------------------------------------//
+
 type ColumnDate interface {
 	DateExpression
 	column

doc.go

@@ -1,3 +1,5 @@
-//
-
+/*
+	Package Jet is a framework for writing type-safe SQL queries for PostgreSQL in Go, with ability
+	to easily convert database query result to desired arbitrary structure.
+*/
 package jet

generator/postgres/templates.go

@@ -5,10 +5,8 @@ var autoGenWarningTemplate = `
 // Code generated by go-jet DO NOT EDIT.
 // Generated at {{now}}
 //
-// WARNING: Changes to this file may cause incorrect behavior and will be lost 
-// if the code is regenerated
-//
-// Licence under: https://github.com/go-jet/jet/blob/master/LICENSE
+// WARNING: Changes to this file may cause incorrect behavior  
+// and will be lost if the code is regenerated
 //
 
 `

operators.go

@@ -4,9 +4,9 @@ import "errors"
 
 //----------- Logical operators ---------------//
 
-// Returns a representation of "not expr"
-func NOT(expr BoolExpression) BoolExpression {
-	return newPrefixBoolOperator(expr, "NOT")
+// Returns negation of bool expression expr
+func NOT(exp BoolExpression) BoolExpression {
+	return newPrefixBoolOperator(exp, "NOT")
 }
 
 func BIT_NOT(expr IntegerExpression) IntegerExpression {

projection.go

@@ -5,7 +5,6 @@ type projection interface {
 	from(subQuery ExpressionTable) projection
 }
 
-// Dummy type for projection list
 type ProjectionList []projection
 
 func (cl ProjectionList) from(subQuery ExpressionTable) projection {