64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
package mongo
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import (
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"fmt"
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"strings"
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"github.com/sunboyy/repogen/internal/spec"
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)
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type querySpec struct {
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Operator spec.Operator
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Predicates []predicate
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}
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func (q querySpec) Code() string {
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var predicateCodes []string
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var argIndex int
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for _, predicate := range q.Predicates {
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predicateCodes = append(predicateCodes, predicate.Code(argIndex))
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argIndex += predicate.Comparator.NumberOfArguments()
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}
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var lines []string
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switch q.Operator {
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case spec.OperatorOr:
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lines = append(lines, ` "$or": []bson.M{`)
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for _, predicateCode := range predicateCodes {
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lines = append(lines, fmt.Sprintf(` {%s},`, predicateCode))
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}
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lines = append(lines, ` },`)
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default:
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for _, predicateCode := range predicateCodes {
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lines = append(lines, fmt.Sprintf(` %s,`, predicateCode))
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}
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}
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return strings.Join(lines, "\n")
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}
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type predicate struct {
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Field string
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Comparator spec.Comparator
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}
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func (p predicate) Code(argIndex int) string {
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switch p.Comparator {
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case spec.ComparatorEqual:
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return fmt.Sprintf(`"%s": arg%d`, p.Field, argIndex)
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case spec.ComparatorNot:
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return fmt.Sprintf(`"%s": bson.M{"$ne": arg%d}`, p.Field, argIndex)
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case spec.ComparatorLessThan:
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return fmt.Sprintf(`"%s": bson.M{"$lt": arg%d}`, p.Field, argIndex)
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case spec.ComparatorLessThanEqual:
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return fmt.Sprintf(`"%s": bson.M{"$lte": arg%d}`, p.Field, argIndex)
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case spec.ComparatorGreaterThan:
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return fmt.Sprintf(`"%s": bson.M{"$gt": arg%d}`, p.Field, argIndex)
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case spec.ComparatorGreaterThanEqual:
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return fmt.Sprintf(`"%s": bson.M{"$gte": arg%d}`, p.Field, argIndex)
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case spec.ComparatorBetween:
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return fmt.Sprintf(`"%s": bson.M{"$gte": arg%d, "$lte": arg%d}`, p.Field, argIndex, argIndex+1)
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case spec.ComparatorIn:
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return fmt.Sprintf(`"%s": bson.M{"$in": arg%d}`, p.Field, argIndex)
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}
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return ""
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}
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