func (cfg *PageHeader) SetValue(key string, value string, s *reflect.Value) {
// put unknown fields into a map
if _, ok := s.Type().FieldByName(key); !ok {
cfg.Other[key] = strings.TrimSpace(value)
return
}
// Set value
f := s.FieldByName(key)
switch f.Interface().(type) {
default:
errhandle(fmt.Errorf("Unknown type of field %s", key))
case string:
f.SetString(value)
case []string:
values := strings.Split(value, ",")
for i, v := range values {
values[i] = strings.TrimSpace(v)
}
f.Set(reflect.ValueOf(values))
case time.Time:
var t time.Time
var err error
for _, fmt := range DATEFORMATS {
t, err = time.Parse(fmt, value)
if err == nil {
break
}
}
errhandle(err)
f.Set(reflect.ValueOf(t))
}
}
func (scan *Scan) ScanToStruct(rows *sql.Rows, record reflect.Value) error {
columns, err := rows.Columns()
if err != nil {
return err
}
values := make([]interface{}, len(columns))
for i, column := range columns {
var field reflect.Value
fieldName := scan.SQLColumnDict[column]
if scan.ToPointers {
field = record.Elem().FieldByName(fieldName)
} else {
field = record.FieldByName(fieldName)
}
if field.IsValid() {
values[i] = field.Addr().Interface()
} else {
values[i] = &values[i]
}
}
return rows.Scan(values...)
}
func (q *Query) findPopulatePath(path string) {
parts := strings.Split(path, ".")
resultVal := reflect.ValueOf(q.parentStruct).Elem()
var refVal reflect.Value
partsLen := len(parts)
for i := 0; i < partsLen; i++ {
elem := parts[i]
if i == 0 {
refVal = resultVal.FieldByName(elem)
structTag, _ := resultVal.Type().FieldByName(elem)
q.popSchema = structTag.Tag.Get(q.z.modelTag)
} else if i == partsLen-1 {
structTag, _ := refVal.Type().FieldByName(elem)
q.popSchema = structTag.Tag.Get(q.z.modelTag)
refVal = refVal.FieldByName(elem)
} else {
//refVal = handleSlice(refVal, elem, path)
refVal = refVal.FieldByName(elem)
}
if !refVal.IsValid() {
panic("field `" + elem + "` not found in populate path `" + path + "`")
}
}
if refVal.Kind() == reflect.Slice {
q.isSlice = true
}
q.populateField = refVal.Interface()
}
func getFields(v reflect.Value, tagName string) []*Field {
if v.Kind() == reflect.Ptr {
v = v.Elem()
}
t := v.Type()
var fields []*Field
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
if tag := field.Tag.Get(tagName); tag == "-" {
continue
}
f := &Field{
field: field,
value: v.FieldByName(field.Name),
}
fields = append(fields, f)
}
return fields
}
func (j *JSONPath) findFieldInValue(value *reflect.Value, node *FieldNode) (reflect.Value, error) {
t := value.Type()
var inlineValue *reflect.Value
for ix := 0; ix < t.NumField(); ix++ {
f := t.Field(ix)
jsonTag := f.Tag.Get("json")
parts := strings.Split(jsonTag, ",")
if len(parts) == 0 {
continue
}
if parts[0] == node.Value {
return value.Field(ix), nil
}
if len(parts[0]) == 0 {
val := value.Field(ix)
inlineValue = &val
}
}
if inlineValue != nil {
if inlineValue.Kind() == reflect.Struct {
// handle 'inline'
match, err := j.findFieldInValue(inlineValue, node)
if err != nil {
return reflect.Value{}, err
}
if match.IsValid() {
return match, nil
}
}
}
return value.FieldByName(node.Value), nil
}
// unmarshalSettings sets for all its settings the relating field of v.
func unmarshalSettings(settings SettingList, v reflect.Value) {
for _, s := range settings {
field := v.FieldByName(upperFirst(s.Name()))
if !field.CanSet() {
continue
}
switch s.Type() {
case String:
if field.Kind() == reflect.String {
field.SetString(s.AsString())
}
case Integer:
switch field.Kind() {
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
if s.AsInteger() >= 0 {
field.SetUint(uint64(s.AsInteger()))
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
field.SetInt(s.AsInteger())
}
case Real:
if field.Kind() == reflect.Float32 || field.Kind() == reflect.Float64 {
field.SetFloat(s.AsReal())
}
}
}
}
func mergeStruct(out, in reflect.Value) {
sprop := GetProperties(in.Type())
for i := 0; i < in.NumField(); i++ {
f := in.Type().Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
}
if emIn, ok := in.Addr().Interface().(extensionsMap); ok {
emOut := out.Addr().Interface().(extensionsMap)
mergeExtension(emOut.ExtensionMap(), emIn.ExtensionMap())
} else if emIn, ok := in.Addr().Interface().(extensionsBytes); ok {
emOut := out.Addr().Interface().(extensionsBytes)
bIn := emIn.GetExtensions()
bOut := emOut.GetExtensions()
*bOut = append(*bOut, *bIn...)
}
uf := in.FieldByName("XXX_unrecognized")
if !uf.IsValid() {
return
}
uin := uf.Bytes()
if len(uin) > 0 {
out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
}
}
// DelQuery will delete (from datastore and memcache) all entities of type src that matches q.
// src must be a pointer to a struct type.
func DelQuery(c PersistenceContext, src interface{}, q *datastore.Query) (err error) {
var dataIds []*datastore.Key
results := reflect.New(reflect.SliceOf(reflect.TypeOf(src).Elem()))
dataIds, err = q.GetAll(c, results.Interface())
if err = FilterOkErrors(err); err != nil {
return
}
memcacheKeys := []string{}
var el reflect.Value
resultsSlice := results.Elem()
for index, dataId := range dataIds {
el = resultsSlice.Index(index)
var k key.Key
if k, err = gaekey.FromGAE(dataId); err != nil {
return
}
el.FieldByName("Id").Set(reflect.ValueOf(k))
if _, err = MemcacheKeys(c, el.Addr().Interface(), &memcacheKeys); err != nil {
return
}
if err = runProcess(c, el.Addr().Interface(), BeforeDeleteName, nil); err != nil {
return
}
}
if err = datastore.DeleteMulti(c, dataIds); err != nil {
return
}
for index, _ := range dataIds {
el = resultsSlice.Index(index)
if err = runProcess(c, el.Addr().Interface(), AfterDeleteName, nil); err != nil {
return
}
}
return memcache.Del(c, memcacheKeys...)
}
func setFieldDefaults(v reflect.Value, sf reflect.StructField, s reflect.Value) {
if v.CanInterface() && reflect.DeepEqual(
v.Interface(), reflect.Zero(v.Type()).Interface()) {
tag := sf.Tag.Get("ebmldef")
if tag != "" {
switch v.Kind() {
case reflect.Int, reflect.Int64:
u, _ := strconv.ParseInt(tag, 10, 0)
v.SetInt(int64(u))
case reflect.Uint, reflect.Uint64:
u, _ := strconv.ParseUint(tag, 10, 0)
v.SetUint(u)
case reflect.Float32, reflect.Float64:
f, _ := strconv.ParseFloat(tag, 64)
v.SetFloat(f)
case reflect.String:
v.SetString(tag)
default:
log.Panic("Unsupported default value")
}
}
ltag := sf.Tag.Get("ebmldeflink")
if ltag != "" {
v.Set(s.FieldByName(ltag))
}
}
}
func (d *decoder) decodeStruct(src hl7.Data, dst reflect.Value) {
typ := dst.Type()
for i := 0; i < typ.NumField(); i++ {
field := typ.Field(i)
fieldName := field.Name
fieldValue := dst.FieldByName(fieldName)
// So just skip it.
if !fieldValue.CanSet() {
d.err.append(fmt.Errorf("%s.%s is not settable", typ.Name(), fieldName))
continue
}
index := i
if _, ok := src.(hl7.Segment); ok {
index += 1
}
newSrc, ok := src.Index(index)
if !ok {
//d.err.append(fmt.Errorf("could not find src index for %s.%s", typ.Name(), fieldName))
continue
}
d.decode(newSrc, fieldValue)
}
}
func (e *encoder) encodeStruct(val reflect.Value) {
fmt.Fprint(e, "<struct>")
t := val.Type()
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
v := val.FieldByName(f.Name)
if e.isNil(v) {
continue
}
fmt.Fprintf(e, "<member>")
name := f.Tag.Get("xmlrpc")
if name == "" {
name = f.Name
}
fmt.Fprintf(e, "<name>%s</name>", name)
e.encodeValue(v)
fmt.Fprintf(e, "</member>")
}
fmt.Fprint(e, "</struct>")
}
func applyToStruct(obj reflect.Value, head P, mid string, tail P, ctx *Context) error {
if mid != "*" {
result := obj.FieldByName(mid)
if result.Kind() == reflect.Invalid {
result = obj.MethodByName(mid)
}
if result.Kind() == reflect.Invalid {
return fmt.Errorf("no field '%s' in type '%s' at '%s'", mid, obj.Type(), head)
}
return apply(result, append(head, mid), tail, ctx)
}
typ := obj.Type()
for i := 0; i < typ.NumField() && !ctx.stop; i++ {
if err := applyToStruct(obj, head, typ.Field(i).Name, tail, ctx); err != nil && err != ErrMissing {
return err
}
}
return nil
}
func skipField(v reflect.Value, f reflect.StructField) bool {
// no tag on the structure field
name := f.Tag.Get("when")
if name == "" {
return false
}
// invalid field in tag
f1 := v.FieldByName(name)
if !f1.IsValid() {
return false
}
// target field is not a string
if f1.Type().Kind() != reflect.String {
return false
}
target := f1.String()
value := f.Tag.Get("value")
switch f.Tag.Get("cond") {
case "is":
// skip when target equals value
return (target == value)
case "not":
return (target != value)
}
return false
}
func setDefaults(properties []PropertyDocs, defaults reflect.Value) {
for i := range properties {
prop := &properties[i]
fieldName := proptools.FieldNameForProperty(prop.Name)
f := defaults.FieldByName(fieldName)
if (f == reflect.Value{}) {
panic(fmt.Errorf("property %q does not exist in %q", fieldName, defaults.Type()))
}
if reflect.DeepEqual(f.Interface(), reflect.Zero(f.Type()).Interface()) {
continue
}
if f.Type().Kind() == reflect.Interface {
f = f.Elem()
}
if f.Type().Kind() == reflect.Ptr {
f = f.Elem()
}
if f.Type().Kind() == reflect.Struct {
setDefaults(prop.Properties, f)
} else {
prop.Default = fmt.Sprintf("%v", f.Interface())
}
}
}
// model中类型提取其中的 idField(int 类型) 属性组成 slice 返回
func Models2Intslice(models interface{}, idField string) []int {
if models == nil {
return []int{}
}
// 类型检查
modelsValue := reflect.ValueOf(models)
if modelsValue.Kind() != reflect.Slice {
return []int{}
}
var modelValue reflect.Value
length := modelsValue.Len()
ids := make([]int, 0, length)
for i := 0; i < length; i++ {
modelValue = reflect.Indirect(modelsValue.Index(i))
if modelValue.Kind() != reflect.Struct {
continue
}
val := modelValue.FieldByName(idField)
if val.Kind() != reflect.Int {
continue
}
ids = append(ids, int(val.Int()))
}
return ids
}
// Required a struct type
func (g *Graph) findFieldValue(parent reflect.Value, path structPath, linneage *[]reflect.Value) (reflect.Value, error) {
*linneage = append(*linneage, parent)
// Dereference incoming values
if parent.Kind() == reflect.Ptr {
parent = parent.Elem()
}
// Only accept structs
if parent.Kind() != reflect.Struct {
return parent, fmt.Errorf("Type is %s, not struct", parent.Kind().String())
}
// Take the first entry from the path
stub, path := path.Shift()
// Try to get the field
f := parent.FieldByName(stub)
if !f.IsValid() {
return f, fmt.Errorf("Can't find field %s in %s", stub, parent)
}
// If that's the end of the path, return the value
if path.Empty() {
return f, nil
}
// Otherwise recurse
return g.findFieldValue(f, path, linneage)
}
func extractCost(v reflect.Value) int64 {
v = v.FieldByName("Cost")
if v.Kind() != reflect.Ptr {
return 0
}
v = v.Elem()
if v.Kind() != reflect.Struct {
return 0
}
extract := func(name string) int64 {
w := v.FieldByName(name)
if w.Kind() != reflect.Ptr {
return 0
}
w = w.Elem()
switch w.Kind() {
case reflect.Int, reflect.Int32, reflect.Int64:
return w.Int()
}
return 0
}
return (extract("IndexWrites") + extract("EntityWrites")) * cost.Write
}
func unmarshalStruct(data string, v reflect.Value) error {
structType := v.Type()
var name string
for len(data) > 0 {
typ, content, n := readElement(data)
data = data[n:]
if typ != ',' {
return errors.New("tnetstring: non-string key in dictionary")
}
name = content
field := v.FieldByName(name)
if !field.IsValid() {
for i := 0; i < structType.NumField(); i++ {
f := structType.Field(i)
if f.Tag.Get("tnetstring") == name {
field = v.Field(i)
break
}
}
if !field.IsValid() {
// skip the field
_, _, n := readElement(data)
data = data[n:]
continue
}
}
n, err := unmarshal(data, field)
data = data[n:]
if err != nil {
return err
}
}
return nil
}
func convertStruct(in interface{}, val reflect.Value) *ConfigError {
dict, ok := in.(map[string]interface{})
if !ok || len(dict) != val.NumField() {
return &ConfigError{ErrInvalidType, ""}
}
for k, from := range dict {
to := val.FieldByName(strings.ToTitle(k[:1]) + k[1:])
if !to.IsValid() {
return &ConfigError{ErrInvalidType, ""}
}
convertor := convertFuncs.get(to)
if convertor == nil {
return &ConfigError{ErrInvalidType, ""}
}
if err := convertor(from, to); err != nil {
if len(err.Field) > 0 {
err.Field = fmt.Sprintf("%s.%s", k, err.Field)
} else {
err.Field = k
}
return err
}
}
return nil
}
// extractFromObjectMeta extracts pointers to metadata fields from an object
func extractFromObjectMeta(v reflect.Value, a *genericAccessor) error {
if err := runtime.FieldPtr(v, "Namespace", &a.namespace); err != nil {
return err
}
if err := runtime.FieldPtr(v, "Name", &a.name); err != nil {
return err
}
if err := runtime.FieldPtr(v, "GenerateName", &a.generateName); err != nil {
return err
}
if err := runtime.FieldPtr(v, "UID", &a.uid); err != nil {
return err
}
if err := runtime.FieldPtr(v, "ResourceVersion", &a.resourceVersion); err != nil {
return err
}
if err := runtime.FieldPtr(v, "SelfLink", &a.selfLink); err != nil {
return err
}
if err := runtime.FieldPtr(v, "Labels", &a.labels); err != nil {
return err
}
if err := runtime.FieldPtr(v, "Annotations", &a.annotations); err != nil {
return err
}
ownerReferences := v.FieldByName("OwnerReferences")
if !ownerReferences.IsValid() {
return fmt.Errorf("struct %#v lacks OwnerReferences type", v)
}
if ownerReferences.Kind() != reflect.Slice {
return fmt.Errorf("expect %v to be a slice", ownerReferences.Kind())
}
a.ownerReferences = ownerReferences.Addr()
return nil
}
func encodeStruct(val reflect.Value) ([]byte, error) {
var b bytes.Buffer
b.WriteString("<struct>")
t := val.Type()
for i := 0; i < t.NumField(); i++ {
b.WriteString("<member>")
f := t.Field(i)
name := f.Tag.Get("xmlrpc")
if name == "" {
name = f.Name
}
b.WriteString(fmt.Sprintf("<name>%s</name>", name))
p, err := encodeValue(val.FieldByName(f.Name))
if err != nil {
return nil, err
}
b.Write(p)
b.WriteString("</member>")
}
b.WriteString("</struct>")
return b.Bytes(), nil
}
func copyType(rv reflect.Value, name string) (reflect.Value, error) {
field := rv.FieldByName(name)
if !field.IsValid() {
return rv, errors.New("Internal error: " + rv.Type().String() + " missing field " + name)
}
return reflect.New(field.Type()), nil
}
func addFields(m *Model, t reflect.Type, v reflect.Value) {
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
sqlTag := field.Tag.Get("sql")
if sqlTag == "-" {
continue
}
if field.Anonymous && field.Type.Kind() == reflect.Struct {
addFields(m, field.Type, v.Field(i))
continue
}
parsedSqlTags := parseTags(sqlTag)
rawValidateTag := field.Tag.Get("validate")
parsedValidateTags := make(map[string]string)
if len(rawValidateTag) > 0 {
if rawValidateTag[:1] == "^" {
parsedValidateTags["regexp"] = rawValidateTag
} else {
parsedValidateTags = parseTags(rawValidateTag)
}
}
fd := &ModelField{
Name: toSnake(field.Name),
Value: v.FieldByName(field.Name).Interface(),
SqlTags: parsedSqlTags,
ValidateTags: parsedValidateTags,
RawTag: field.Tag,
}
if fd.PrimaryKey() {
m.Pk = fd
}
m.Fields = append(m.Fields, fd)
}
}
// isSameUnknownStruct returns true if the two struct values are the same length
// and have the same contents as defined by IsSame. This function explicitly
// ignores the declared type of the struct.
func isSameStruct(x, y reflect.Value) bool {
sx, okx := x.Interface().(StringConvertable)
sy, oky := x.Interface().(StringConvertable)
if okx && oky {
//log.Println("Stringable", x, y)
return sx.String() == sy.String()
}
numFields := x.NumField()
if numFields != y.NumField() {
return false
}
typeX := x.Type()
for i := 0; i < numFields; i++ {
path := []int{i}
vx := x.FieldByIndex(path)
vy := y.FieldByName(typeX.Field(i).Name)
if vx.CanInterface() && vy.CanInterface() {
if !IsSame(vx.Interface(), vy.Interface()) {
return false
}
}
}
return true
}
func Validate(validation *revel.Validation, obj interface{}) {
// Get reflection data to parse validation tag data
var v reflect.Value = reflect.Indirect(reflect.ValueOf(obj))
// We only want to validate structs and their tagged fields
if v.Kind() != reflect.Struct {
panic(fmt.Sprintf("Object is not a struct. Actual kind is: %s", v.Kind()))
}
// Go through each field in the struct and check for the
// validation tag. Apply appropriate revel check as needed.
t := v.Type()
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
fieldId := fmt.Sprintf("%s.%s", t.Name(), field.Name)
var fieldValidators []revel.Validator
fieldValidators, ok := validationCache[fieldId]
if tag := field.Tag.Get(TagName); !ok && len(tag) > 0 {
fieldValidators = parseTag(tag)
validationCache[fieldId] = fieldValidators
} else if !ok {
fieldValidators = nil
validationCache[fieldId] = nil
}
if len(fieldValidators) > 0 {
validation.Check(v.FieldByName(field.Name).Interface(), fieldValidators...).Key(fieldId)
}
}
}
// Search for a field named 'ID' in the provided struct
// - The 'ID' field must be of type Int | String, any other type
// results in an error
func reflectKey(val reflect.Value) (*Key, error) {
if val.Kind() == reflect.Ptr && val.IsNil() {
return nil, fmt.Errorf("Key: <nil> pointer of type %s", val.String())
}
if val.Kind() == reflect.Ptr {
val = Indirect(val)
}
// TODO: for static-only states (meaning no mutability)
// this might be too limiting.
if val.Kind() != reflect.Struct {
return nil, errors.New("Key: only structs can have a Key")
}
id_field := val.FieldByName("ID")
if !id_field.IsValid() {
return nil, fmt.Errorf("%s does not have field with name = 'ID'", val.Type().String())
}
switch id_field.Kind() {
case reflect.String:
return NewStringKey(id_field.String())
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return NewIntKey(int(id_field.Int()))
default:
return nil, fmt.Errorf("Field 'ID' is of invalid type: %v\n", id_field.Kind())
}
}
// scan the value by fields, and set to v
func rawScanStruct(v reflect.Value, fields []string, scanner rowScaner) (err error) {
if v.IsNil() {
e := fmt.Sprintf("struct can not be nil, but got %#v", v.Interface())
return errors.New(e)
}
dest := make([]interface{}, len(fields))
for v.Kind() == reflect.Ptr {
v = v.Elem()
}
// Loop over column names and find field in s to bind to
// based on column name. all returned columns must match
// a field in the s struct
for x, fieldName := range fields {
f := v.FieldByName(fieldName)
if f == zeroVal {
e := fmt.Sprintf("Scanner: No field %s in type %s",
fieldName, v.Type())
return errors.New(e)
} else {
dest[x] = f.Addr().Interface()
}
}
err = scanner.Scan(dest...)
return
}
func lookup(v reflect.Value, s string) reflect.Value {
var ret reflect.Value
v = reflect.Indirect(v)
switch v.Kind() {
case reflect.Array, reflect.Slice:
if idx, err := strconv.Atoi(s); err == nil {
ret = v.Index(idx)
}
case reflect.Map:
keyt := v.Type().Key()
switch keyt.Kind() {
case reflect.String:
ret = v.MapIndex(reflect.ValueOf(s))
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
if idx, err := strconv.ParseInt(s, 10, 64); err == nil {
idxVal := reflect.New(keyt).Elem()
idxVal.SetInt(idx)
ret = v.MapIndex(idxVal)
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
if idx, err := strconv.ParseUint(s, 10, 64); err == nil {
idxVal := reflect.New(keyt).Elem()
idxVal.SetUint(idx)
ret = v.MapIndex(idxVal)
}
}
case reflect.Struct:
ret = v.FieldByName(s)
}
// TODO: Find a way to look up methods by name
return ret
}
// validateStruct will validate the struct value's fields. If the structure has
// nested types those types will be validated also.
func (v *validator) validateStruct(value reflect.Value, path string) {
prefix := "."
if path == "" {
prefix = ""
}
for i := 0; i < value.Type().NumField(); i++ {
f := value.Type().Field(i)
if strings.ToLower(f.Name[0:1]) == f.Name[0:1] {
continue
}
fvalue := value.FieldByName(f.Name)
notset := false
if f.Tag.Get("required") != "" {
switch fvalue.Kind() {
case reflect.Ptr, reflect.Slice, reflect.Map:
if fvalue.IsNil() {
notset = true
}
default:
if !fvalue.IsValid() {
notset = true
}
}
}
if notset {
msg := "missing required parameter: " + path + prefix + f.Name
v.errors = append(v.errors, msg)
} else {
v.validateAny(fvalue, path+prefix+f.Name)
}
}
}
func mergeStruct(out, in reflect.Value) {
sprop := GetProperties(in.Type())
for i := 0; i < in.NumField(); i++ {
f := in.Type().Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
}
if emIn, ok := extendable(in.Addr().Interface()); ok {
emOut, _ := extendable(out.Addr().Interface())
mIn, muIn := emIn.extensionsRead()
if mIn != nil {
mOut := emOut.extensionsWrite()
muIn.Lock()
mergeExtension(mOut, mIn)
muIn.Unlock()
}
}
uf := in.FieldByName("XXX_unrecognized")
if !uf.IsValid() {
return
}
uin := uf.Bytes()
if len(uin) > 0 {
out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
}
}
