Package structure refactor.

statement.go

@@ -1,90 +0,0 @@
-package jet
-
-import (
-	"context"
-	"database/sql"
-	"github.com/go-jet/jet/execution"
-	"strings"
-)
-
-//Statement is common interface for all statements(SELECT, INSERT, UPDATE, DELETE, LOCK)
-type Statement interface {
-	acceptsVisitor
-	// Sql returns parametrized sql query with list of arguments.
-	// err is returned if statement is not composed correctly
-	Sql(dialect ...Dialect) (query string, args []interface{}, err error)
-	// DebugSql returns debug query where every parametrized placeholder is replaced with its argument.
-	// Do not use it in production. Use it only for debug purposes.
-	// err is returned if statement is not composed correctly
-	DebugSql(dialect ...Dialect) (query string, err error)
-
-	// Query executes statement over database connection db and stores row result in destination.
-	// Destination can be arbitrary structure
-	Query(db execution.DB, destination interface{}) error
-	// QueryContext executes statement with a context over database connection db and stores row result in destination.
-	// Destination can be of arbitrary structure
-	QueryContext(context context.Context, db execution.DB, destination interface{}) error
-
-	//Exec executes statement over db connection without returning any rows.
-	Exec(db execution.DB) (sql.Result, error)
-	//Exec executes statement with context over db connection without returning any rows.
-	ExecContext(context context.Context, db execution.DB) (sql.Result, error)
-}
-
-func debugSql(statement Statement, overrideDialect ...Dialect) (string, error) {
-	dialect := detectDialect(statement, overrideDialect...)
-	sqlQuery, args, err := statement.Sql()
-
-	if err != nil {
-		return "", err
-	}
-
-	debugSQLQuery := sqlQuery
-
-	for i, arg := range args {
-		argPlaceholder := dialect.ArgumentPlaceholder(i + 1)
-		debugSQLQuery = strings.Replace(debugSQLQuery, argPlaceholder, argToString(arg), 1)
-	}
-
-	return debugSQLQuery, nil
-}
-
-func query(statement Statement, db execution.DB, destination interface{}) error {
-	query, args, err := statement.Sql()
-
-	if err != nil {
-		return err
-	}
-
-	return execution.Query(context.Background(), db, query, args, destination)
-}
-
-func queryContext(context context.Context, statement Statement, db execution.DB, destination interface{}) error {
-	query, args, err := statement.Sql()
-
-	if err != nil {
-		return err
-	}
-
-	return execution.Query(context, db, query, args, destination)
-}
-
-func exec(statement Statement, db execution.DB) (res sql.Result, err error) {
-	query, args, err := statement.Sql()
-
-	if err != nil {
-		return
-	}
-
-	return db.Exec(query, args...)
-}
-
-func execContext(context context.Context, statement Statement, db execution.DB) (res sql.Result, err error) {
-	query, args, err := statement.Sql()
-
-	if err != nil {
-		return
-	}
-
-	return db.ExecContext(context, query, args...)
-}