Esempio n. 1
0
/*
Qualify all identifiers for the parent expression. Checks is
a nest alias exists and if it is a duplicate alias.
*/
func (this *IndexNest) Formalize(parent *expression.Formalizer) (f *expression.Formalizer, err error) {
	f, err = this.left.Formalize(parent)
	if err != nil {
		return
	}

	_, ok := f.Allowed.Field(this.keyFor)
	if !ok {
		err = errors.NewUnknownForError("NEST", this.keyFor, "plan.nest.unknown_for")
		return nil, err
	}

	alias := this.Alias()
	if alias == "" {
		err = errors.NewNoTermNameError("NEST", "plan.nest.requires_name_or_alias")
		return nil, err
	}

	_, ok = f.Allowed.Field(alias)
	if ok {
		err = errors.NewDuplicateAliasError("NEST", alias, "plan.nest.duplicate_alias")
		return nil, err
	}

	f.Allowed.SetField(alias, alias)
	f.Keyspace = ""

	var p *expression.Formalizer
	if parent != nil {
		p = parent.Copy()
	} else {
		p = expression.NewFormalizer()
	}

	p.Allowed.SetField(alias, alias)
	this.right.keys, err = p.Map(this.right.keys)
	return
}
Esempio n. 2
0
/*
Qualify all identifiers for the parent expression. Checks is
a nest alias exists and if it is a duplicate alias.
*/
func (this *IndexNest) Formalize(parent *expression.Formalizer) (f *expression.Formalizer, err error) {
	f, err = this.left.Formalize(parent)
	if err != nil {
		return
	}

	_, ok := f.Allowed().Field(this.keyFor)
	if !ok {
		err = errors.NewUnknownForError("NEST", this.keyFor, "plan.nest.unknown_for")
		return nil, err
	}

	alias := this.Alias()
	if alias == "" {
		err = errors.NewNoTermNameError("NEST", "plan.nest.requires_name_or_alias")
		return nil, err
	}

	_, ok = f.Allowed().Field(alias)
	if ok {
		err = errors.NewDuplicateAliasError("NEST", alias, "plan.nest.duplicate_alias")
		return nil, err
	}

	f.Allowed().SetField(alias, alias)
	f.SetKeyspace("")

	p := expression.NewFormalizer("", parent)
	p.Allowed().SetField(alias, alias)
	this.right.keys, err = p.Map(this.right.keys)

	for ident, val := range p.Identifiers() {
		f.Identifiers()[ident] = val
	}

	return
}