526 lines
16 KiB
Go
526 lines
16 KiB
Go
/* WIP Under Really Heavy Construction */
|
|
package qgen
|
|
|
|
import (
|
|
"database/sql"
|
|
"errors"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
func init() {
|
|
Registry = append(Registry,
|
|
&PgsqlAdapter{Name: "pgsql", Buffer: make(map[string]DBStmt)},
|
|
)
|
|
}
|
|
|
|
type PgsqlAdapter struct {
|
|
Name string // ? - Do we really need this? Can't we hard-code this?
|
|
Buffer map[string]DBStmt
|
|
BufferOrder []string // Map iteration order is random, so we need this to track the order, so we don't get huge diffs every commit
|
|
}
|
|
|
|
// GetName gives you the name of the database adapter. In this case, it's pgsql
|
|
func (a *PgsqlAdapter) GetName() string {
|
|
return a.Name
|
|
}
|
|
|
|
func (a *PgsqlAdapter) GetStmt(name string) DBStmt {
|
|
return a.Buffer[name]
|
|
}
|
|
|
|
func (a *PgsqlAdapter) GetStmts() map[string]DBStmt {
|
|
return a.Buffer
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) BuildConn(config map[string]string) (*sql.DB, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func (a *PgsqlAdapter) DbVersion() string {
|
|
return "SELECT version()"
|
|
}
|
|
|
|
func (a *PgsqlAdapter) DropTable(name, table string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
q := "DROP TABLE IF EXISTS \"" + table + "\";"
|
|
a.pushStatement(name, "drop-table", q)
|
|
return q, nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
// We may need to change the CreateTable API to better suit PGSQL and the other database drivers which are coming up
|
|
func (a *PgsqlAdapter) CreateTable(name, table, charset, collation string, cols []DBTableColumn, keys []DBTableKey) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if len(cols) == 0 {
|
|
return "", errors.New("You can't have a table with no columns")
|
|
}
|
|
|
|
q := "CREATE TABLE \"" + table + "\" ("
|
|
for _, col := range cols {
|
|
if col.AutoIncrement {
|
|
col.Type = "serial"
|
|
} else if col.Type == "createdAt" {
|
|
col.Type = "timestamp"
|
|
} else if col.Type == "datetime" {
|
|
col.Type = "timestamp"
|
|
}
|
|
|
|
var size string
|
|
if col.Size > 0 {
|
|
size = " (" + strconv.Itoa(col.Size) + ")"
|
|
}
|
|
|
|
var end string
|
|
if col.Default != "" {
|
|
end = " DEFAULT "
|
|
if a.stringyType(col.Type) && col.Default != "''" {
|
|
end += "'" + col.Default + "'"
|
|
} else {
|
|
end += col.Default
|
|
}
|
|
}
|
|
if !col.Null {
|
|
end += " not null"
|
|
}
|
|
|
|
q += "\n\t`" + col.Name + "` " + col.Type + size + end + ","
|
|
}
|
|
|
|
if len(keys) > 0 {
|
|
for _, key := range keys {
|
|
q += "\n\t" + key.Type
|
|
if key.Type != "unique" {
|
|
q += " key"
|
|
}
|
|
q += "("
|
|
for _, column := range strings.Split(key.Columns, ",") {
|
|
q += "`" + column + "`,"
|
|
}
|
|
q = q[0:len(q)-1] + "),"
|
|
}
|
|
}
|
|
|
|
q = q[0:len(q)-1] + "\n);"
|
|
a.pushStatement(name, "create-table", q)
|
|
return q, nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) AddColumn(name, table string, column DBTableColumn, key *DBTableKey) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) DropColumn(name, table, colName string) (string, error) {
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) RenameColumn(name, table, oldName, newName string) (string, error) {
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) ChangeColumn(name, table, colName string, col DBTableColumn) (string, error) {
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SetDefaultColumn(name, table, colName, colType, defaultStr string) (string, error) {
|
|
if colType == "text" {
|
|
return "", errors.New("text fields cannot have default values")
|
|
}
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
// TODO: Test to make sure everything works here
|
|
func (a *PgsqlAdapter) AddIndex(name, table, iname, colname string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if iname == "" {
|
|
return "", errors.New("You need a name for the index")
|
|
}
|
|
if colname == "" {
|
|
return "", errors.New("You need a name for the column")
|
|
}
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
// TODO: Test to make sure everything works here
|
|
func (a *PgsqlAdapter) AddKey(name, table, column string, key DBTableKey) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if column == "" {
|
|
return "", errors.New("You need a name for the column")
|
|
}
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
// TODO: Test to make sure everything works here
|
|
func (a *PgsqlAdapter) RemoveIndex(name, table, iname string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if iname == "" {
|
|
return "", errors.New("You need a name for the index")
|
|
}
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
// TODO: Test to make sure everything works here
|
|
func (a *PgsqlAdapter) AddForeignKey(name, table, column, ftable, fcolumn string, cascade bool) (out string, e error) {
|
|
var c = func(str string, val bool) {
|
|
if e != nil || !val {
|
|
return
|
|
}
|
|
e = errors.New("You need a " + str + " for this table")
|
|
}
|
|
c("name", table == "")
|
|
c("column", column == "")
|
|
c("ftable", ftable == "")
|
|
c("fcolumn", fcolumn == "")
|
|
if e != nil {
|
|
return "", e
|
|
}
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Test this
|
|
// ! We need to get the last ID out of this somehow, maybe add returning to every query? Might require some sort of wrapper over the sql statements
|
|
func (a *PgsqlAdapter) SimpleInsert(name, table, columns, fields string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
|
|
q := "INSERT INTO \"" + table + "\"("
|
|
if columns != "" {
|
|
q += a.buildColumns(columns) + ") VALUES ("
|
|
for _, field := range processFields(fields) {
|
|
nameLen := len(field.Name)
|
|
if field.Name[0] == '"' && field.Name[nameLen-1] == '"' && nameLen >= 3 {
|
|
field.Name = "'" + field.Name[1:nameLen-1] + "'"
|
|
}
|
|
if field.Name[0] == '\'' && field.Name[nameLen-1] == '\'' && nameLen >= 3 {
|
|
field.Name = "'" + strings.Replace(field.Name[1:nameLen-1], "'", "''", -1) + "'"
|
|
}
|
|
q += field.Name + ","
|
|
}
|
|
q = q[0 : len(q)-1]
|
|
} else {
|
|
q += ") VALUES ("
|
|
}
|
|
q += ")"
|
|
|
|
a.pushStatement(name, "insert", q)
|
|
return q, nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleBulkInsert(name, table, columns string, fieldSet []string) (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
func (a *PgsqlAdapter) buildColumns(cols string) (q string) {
|
|
if cols == "" {
|
|
return ""
|
|
}
|
|
// Escape the column names, just in case we've used a reserved keyword
|
|
for _, col := range processColumns(cols) {
|
|
if col.Type == TokenFunc {
|
|
q += col.Left + ","
|
|
} else {
|
|
q += "\"" + col.Left + "\","
|
|
}
|
|
}
|
|
return q[0 : len(q)-1]
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleReplace(name, table, columns, fields string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if len(columns) == 0 {
|
|
return "", errors.New("No columns found for SimpleInsert")
|
|
}
|
|
if len(fields) == 0 {
|
|
return "", errors.New("No input data found for SimpleInsert")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleUpsert(name, table, columns, fields, where string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if len(columns) == 0 {
|
|
return "", errors.New("No columns found for SimpleInsert")
|
|
}
|
|
if len(fields) == 0 {
|
|
return "", errors.New("No input data found for SimpleInsert")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implemented, but we need CreateTable and a better installer to *test* it
|
|
func (a *PgsqlAdapter) SimpleUpdate(up *updatePrebuilder) (string, error) {
|
|
if up.table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if up.set == "" {
|
|
return "", errors.New("You need to set data in this update statement")
|
|
}
|
|
|
|
q := "UPDATE \"" + up.table + "\" SET "
|
|
for _, item := range processSet(up.set) {
|
|
q += "`" + item.Column + "`="
|
|
for _, token := range item.Expr {
|
|
switch token.Type {
|
|
case TokenFunc:
|
|
// TODO: Write a more sophisticated function parser on the utils side.
|
|
if strings.ToUpper(token.Contents) == "UTC_TIMESTAMP()" {
|
|
token.Contents = "LOCALTIMESTAMP()"
|
|
}
|
|
q += " " + token.Contents
|
|
case TokenOp, TokenNumber, TokenSub, TokenOr:
|
|
q += " " + token.Contents
|
|
case TokenColumn:
|
|
q += " `" + token.Contents + "`"
|
|
case TokenString:
|
|
q += " '" + token.Contents + "'"
|
|
}
|
|
}
|
|
q += ","
|
|
}
|
|
q = q[0 : len(q)-1]
|
|
|
|
// Add support for BETWEEN x.x
|
|
if len(up.where) != 0 {
|
|
q += " WHERE"
|
|
for _, loc := range processWhere(up.where) {
|
|
for _, token := range loc.Expr {
|
|
switch token.Type {
|
|
case TokenFunc:
|
|
// TODO: Write a more sophisticated function parser on the utils side. What's the situation in regards to case sensitivity?
|
|
if strings.ToUpper(token.Contents) == "UTC_TIMESTAMP()" {
|
|
token.Contents = "LOCALTIMESTAMP()"
|
|
}
|
|
q += " " + token.Contents
|
|
case TokenOp, TokenNumber, TokenSub, TokenOr, TokenNot, TokenLike:
|
|
q += " " + token.Contents
|
|
case TokenColumn:
|
|
q += " `" + token.Contents + "`"
|
|
case TokenString:
|
|
q += " '" + token.Contents + "'"
|
|
default:
|
|
panic("This token doesn't exist o_o")
|
|
}
|
|
}
|
|
q += " AND"
|
|
}
|
|
q = q[0 : len(q)-4]
|
|
}
|
|
|
|
a.pushStatement(up.name, "update", q)
|
|
return q, nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleUpdateSelect(up *updatePrebuilder) (string, error) {
|
|
return "", errors.New("not implemented")
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleDelete(name, table, where string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if where == "" {
|
|
return "", errors.New("You need to specify what data you want to delete")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) ComplexDelete(b *deletePrebuilder) (string, error) {
|
|
if b.table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if b.where == "" {
|
|
return "", errors.New("You need to specify what data you want to delete")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
// We don't want to accidentally wipe tables, so we'll have a separate method for purging tables instead
|
|
func (a *PgsqlAdapter) Purge(name, table string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleSelect(name, table, columns, where, orderby, limit string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if len(columns) == 0 {
|
|
return "", errors.New("No columns found for SimpleSelect")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) ComplexSelect(prebuilder *selectPrebuilder) (string, error) {
|
|
if prebuilder.table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
if len(prebuilder.columns) == 0 {
|
|
return "", errors.New("No columns found for ComplexSelect")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleLeftJoin(name, table1, table2, columns, joiners, where, orderby, limit string) (string, error) {
|
|
if table1 == "" {
|
|
return "", errors.New("You need a name for the left table")
|
|
}
|
|
if table2 == "" {
|
|
return "", errors.New("You need a name for the right table")
|
|
}
|
|
if len(columns) == 0 {
|
|
return "", errors.New("No columns found for SimpleLeftJoin")
|
|
}
|
|
if len(joiners) == 0 {
|
|
return "", errors.New("No joiners found for SimpleLeftJoin")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleInnerJoin(name, table1, table2, columns, joiners, where, orderby, limit string) (string, error) {
|
|
if table1 == "" {
|
|
return "", errors.New("You need a name for the left table")
|
|
}
|
|
if table2 == "" {
|
|
return "", errors.New("You need a name for the right table")
|
|
}
|
|
if len(columns) == 0 {
|
|
return "", errors.New("No columns found for SimpleInnerJoin")
|
|
}
|
|
if len(joiners) == 0 {
|
|
return "", errors.New("No joiners found for SimpleInnerJoin")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleInsertSelect(name string, ins DBInsert, sel DBSelect) (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleInsertLeftJoin(name string, ins DBInsert, sel DBJoin) (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleInsertInnerJoin(name string, ins DBInsert, sel DBJoin) (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
// TODO: Implement this
|
|
func (a *PgsqlAdapter) SimpleCount(name, table, where, limit string) (string, error) {
|
|
if table == "" {
|
|
return "", errors.New("You need a name for this table")
|
|
}
|
|
return "", nil
|
|
}
|
|
|
|
func (a *PgsqlAdapter) Builder() *prebuilder {
|
|
return &prebuilder{a}
|
|
}
|
|
|
|
func (a *PgsqlAdapter) Write() error {
|
|
var stmts, body string
|
|
for _, name := range a.BufferOrder {
|
|
if name[0] == '_' {
|
|
continue
|
|
}
|
|
stmt := a.Buffer[name]
|
|
// TODO: Add support for create-table? Table creation might be a little complex for Go to do outside a SQL file :(
|
|
if stmt.Type != "create-table" {
|
|
stmts += "\t" + name + " *sql.Stmt\n"
|
|
body += `
|
|
common.DebugLog("Preparing ` + name + ` statement.")
|
|
stmts.` + name + `, err = db.Prepare("` + strings.Replace(stmt.Contents, "\"", "\\\"", -1) + `")
|
|
if err != nil {
|
|
log.Print("Error in ` + name + ` statement.")
|
|
return err
|
|
}
|
|
`
|
|
}
|
|
}
|
|
|
|
// TODO: Move these custom queries out of this file
|
|
out := `// +build pgsql
|
|
|
|
// This file was generated by Gosora's Query Generator. Please try to avoid modifying this file, as it might change at any time.
|
|
package main
|
|
|
|
import "log"
|
|
import "database/sql"
|
|
import "git.tuxpa.in/a/gosora/common"
|
|
|
|
// nolint
|
|
type Stmts struct {
|
|
` + stmts + `
|
|
getActivityFeedByWatcher *sql.Stmt
|
|
getActivityCountByWatcher *sql.Stmt
|
|
|
|
Mocks bool
|
|
}
|
|
|
|
// nolint
|
|
func _gen_pgsql() (err error) {
|
|
common.DebugLog("Building the generated statements")
|
|
` + body + `
|
|
return nil
|
|
}
|
|
`
|
|
return writeFile("./gen_pgsql.go", out)
|
|
}
|
|
|
|
// Internal methods, not exposed in the interface
|
|
func (a *PgsqlAdapter) pushStatement(name, stype, q string) {
|
|
if name == "" {
|
|
return
|
|
}
|
|
a.Buffer[name] = DBStmt{q, stype}
|
|
a.BufferOrder = append(a.BufferOrder, name)
|
|
}
|
|
|
|
func (a *PgsqlAdapter) stringyType(ctype string) bool {
|
|
ctype = strings.ToLower(ctype)
|
|
return ctype == "char" || ctype == "varchar" || ctype == "timestamp" || ctype == "text"
|
|
}
|