func (obj *HitsIMP) Next(hit interface{}) bool {
self := ((*C.lucy_Hits)(unsafe.Pointer(obj.TOPTR())))
// TODO: accept a HitDoc object and populate score.
// Get reflection value and type for the supplied struct.
var hitValue reflect.Value
if reflect.ValueOf(hit).Kind() == reflect.Ptr {
temp := reflect.ValueOf(hit).Elem()
if temp.Kind() == reflect.Struct {
if temp.CanSet() {
hitValue = temp
}
}
}
if hitValue == (reflect.Value{}) {
mess := fmt.Sprintf("Arg not writeable struct pointer: %v",
reflect.TypeOf(hit))
obj.err = clownfish.NewErr(mess)
return false
}
var docC *C.lucy_HitDoc
errCallingNext := clownfish.TrapErr(func() {
docC = C.LUCY_Hits_Next(self)
})
if errCallingNext != nil {
obj.err = errCallingNext
return false
}
if docC == nil {
return false
}
defer C.cfish_dec_refcount(unsafe.Pointer(docC))
fields := (*C.cfish_Hash)(unsafe.Pointer(C.LUCY_HitDoc_Get_Fields(docC)))
iterator := C.cfish_HashIter_new(fields)
defer C.cfish_dec_refcount(unsafe.Pointer(iterator))
for C.CFISH_HashIter_Next(iterator) {
keyC := C.CFISH_HashIter_Get_Key(iterator)
valC := C.CFISH_HashIter_Get_Value(iterator)
key := clownfish.CFStringToGo(unsafe.Pointer(keyC))
val := clownfish.CFStringToGo(unsafe.Pointer(valC))
match := func(name string) bool {
return strings.EqualFold(key, name)
}
structField := hitValue.FieldByNameFunc(match)
if structField != (reflect.Value{}) {
structField.SetString(val)
}
}
return true
}
func goToHash(value interface{}, nullable bool) unsafe.Pointer {
switch v := value.(type) {
case map[string]interface{}:
if v == nil {
if nullable {
return nil
}
} else {
size := len(v)
hash := C.cfish_Hash_new(C.size_t(size))
for key, val := range v {
newVal := GoToClownfish(val, nil, true)
keySize := len(key)
keyStr := C.CString(key)
cfKey := C.cfish_Str_new_steal_utf8(keyStr, C.size_t(keySize))
defer C.cfish_dec_refcount(unsafe.Pointer(cfKey))
C.CFISH_Hash_Store(hash, cfKey, (*C.cfish_Obj)(newVal))
}
return unsafe.Pointer(hash)
}
case Obj:
certifyCF(v, C.CFISH_HASH, nullable)
return unsafe.Pointer(C.cfish_incref(unsafe.Pointer(v.TOPTR())))
}
mess := fmt.Sprintf("Can't convert %T to clownfish.Hash", value)
panic(NewErr(mess))
}
//export GOLUCY_Inverter_Invert_Doc
func GOLUCY_Inverter_Invert_Doc(inverter *C.lucy_Inverter, doc *C.lucy_Doc) {
ivars := C.lucy_Inverter_IVARS(inverter)
fields := (*C.cfish_Hash)(C.LUCY_Doc_Get_Fields(doc))
// Prepare for the new doc.
C.LUCY_Inverter_Set_Doc(inverter, doc)
// Extract and invert the doc's fields.
iter := C.cfish_HashIter_new(fields)
for C.CFISH_HashIter_Next(iter) {
field := C.CFISH_HashIter_Get_Key(iter)
obj := C.CFISH_HashIter_Get_Value(iter)
if obj == nil {
mess := "Invalid nil value for field" + clownfish.CFStringToGo(unsafe.Pointer(field))
panic(clownfish.NewErr(mess))
}
inventry := fetchEntry(ivars, field)
inventryIvars := C.lucy_InvEntry_IVARS(inventry)
fieldType := inventryIvars._type
// Get the field value.
var expectedType *C.cfish_Class
switch C.LUCY_FType_Primitive_ID(fieldType) & C.lucy_FType_PRIMITIVE_ID_MASK {
case C.lucy_FType_TEXT:
expectedType = C.CFISH_STRING
case C.lucy_FType_BLOB:
expectedType = C.CFISH_BLOB
case C.lucy_FType_INT32:
expectedType = C.CFISH_INTEGER
case C.lucy_FType_INT64:
expectedType = C.CFISH_INTEGER
case C.lucy_FType_FLOAT32:
expectedType = C.CFISH_FLOAT
case C.lucy_FType_FLOAT64:
expectedType = C.CFISH_FLOAT
default:
panic(clownfish.NewErr("Internal Lucy error: bad type id for field " +
clownfish.CFStringToGo(unsafe.Pointer(field))))
}
if !C.cfish_Obj_is_a(obj, expectedType) {
className := C.cfish_Obj_get_class_name((*C.cfish_Obj)(unsafe.Pointer(fieldType)))
mess := fmt.Sprintf("Invalid type for field '%s': '%s'",
clownfish.CFStringToGo(unsafe.Pointer(field)),
clownfish.CFStringToGo(unsafe.Pointer(className)))
panic(clownfish.NewErr(mess))
}
if inventryIvars.value != obj {
C.cfish_decref(unsafe.Pointer(inventryIvars.value))
inventryIvars.value = C.cfish_inc_refcount(unsafe.Pointer(obj))
}
C.LUCY_Inverter_Add_Field(inverter, inventry)
}
C.cfish_dec_refcount(unsafe.Pointer(iter))
}
func StringToGo(ptr unsafe.Pointer) string {
cfString := (*C.cfish_String)(ptr)
if cfString == nil {
return ""
}
if !C.cfish_Str_is_a(cfString, C.CFISH_STRING) {
cfString := C.CFISH_Str_To_String(cfString)
defer C.cfish_dec_refcount(unsafe.Pointer(cfString))
}
data := C.CFISH_Str_Get_Ptr8(cfString)
size := C.CFISH_Str_Get_Size(cfString)
if size > C.size_t(C.INT_MAX) {
panic(fmt.Sprintf("Overflow: %d > %d", size, C.INT_MAX))
}
return C.GoStringN(data, C.int(size))
}
func HashToGo(ptr unsafe.Pointer) map[string]interface{} {
hash := (*C.cfish_Hash)(ptr)
if hash == nil {
return nil
}
class := C.cfish_Obj_get_class((*C.cfish_Obj)(ptr))
if class != C.CFISH_HASH {
mess := "Not a Hash: " + StringToGo(unsafe.Pointer(C.CFISH_Class_Get_Name(class)))
panic(NewErr(mess))
}
size := C.CFISH_Hash_Get_Size(hash)
m := make(map[string]interface{}, int(size))
iter := C.cfish_HashIter_new(hash)
defer C.cfish_dec_refcount(unsafe.Pointer(iter))
for C.CFISH_HashIter_Next(iter) {
key := C.CFISH_HashIter_Get_Key(iter)
val := C.CFISH_HashIter_Get_Value(iter)
m[StringToGo(unsafe.Pointer(key))] = ToGo(unsafe.Pointer(val))
}
return m
}
func (obj *IndexerIMP) findFieldC(name string) *C.cfish_String {
self := ((*C.lucy_Indexer)(unsafe.Pointer(obj.TOPTR())))
if obj.fieldNames == nil {
obj.fieldNames = make(map[string]clownfish.String)
}
f, ok := obj.fieldNames[name]
if !ok {
schema := C.LUCY_Indexer_Get_Schema(self)
fieldList := C.LUCY_Schema_All_Fields(schema)
defer C.cfish_dec_refcount(unsafe.Pointer(fieldList))
for i := 0; i < int(C.CFISH_Vec_Get_Size(fieldList)); i++ {
cfString := unsafe.Pointer(C.CFISH_Vec_Fetch(fieldList, C.size_t(i)))
field := clownfish.CFStringToGo(cfString)
if strings.EqualFold(name, field) {
C.cfish_inc_refcount(cfString)
f = clownfish.WRAPString(cfString)
obj.fieldNames[name] = f
}
}
}
return (*C.cfish_String)(unsafe.Pointer(f.TOPTR()))
}
func (obj *IndexerIMP) findRealField(name string) (string, error) {
self := ((*C.lucy_Indexer)(unsafe.Pointer(obj.TOPTR())))
if obj.fieldNames == nil {
obj.fieldNames = make(map[string]string)
}
if field, ok := obj.fieldNames[name]; ok {
return field, nil
} else {
schema := C.LUCY_Indexer_Get_Schema(self)
fieldList := C.LUCY_Schema_All_Fields(schema)
defer C.cfish_dec_refcount(unsafe.Pointer(fieldList))
for i := 0; i < int(C.CFISH_Vec_Get_Size(fieldList)); i++ {
cfString := unsafe.Pointer(C.CFISH_Vec_Fetch(fieldList, C.size_t(i)))
field := clownfish.CFStringToGo(cfString)
if strings.EqualFold(name, field) {
obj.fieldNames[name] = field
return field, nil
}
}
}
return "", clownfish.NewErr(fmt.Sprintf("Unknown field: '%v'", name))
}
func doReadDocData(ddrC *C.lucy_DefaultDocReader, docID int32, doc interface{}) error {
// Adapt for different types of "doc".
var setField func(interface{}, string, interface{}) error
var fields interface{}
switch v := doc.(type) {
case Doc:
docC := (*C.lucy_Doc)(clownfish.Unwrap(v, "doc"))
fieldsMap := fetchDocFields(docC)
for field, _ := range fieldsMap {
delete(fieldsMap, field)
}
fields = fieldsMap
setField = setMapField
case map[string]interface{}:
for field, _ := range v {
delete(v, field)
}
fields = v
setField = setMapField
default:
// Get reflection value and type for the supplied struct.
var hitValue reflect.Value
if reflect.ValueOf(doc).Kind() == reflect.Ptr {
temp := reflect.ValueOf(doc).Elem()
if temp.Kind() == reflect.Struct {
if temp.CanSet() {
hitValue = temp
}
}
}
if hitValue == (reflect.Value{}) {
mess := fmt.Sprintf("Arg not writeable struct pointer: %v",
reflect.TypeOf(doc))
return clownfish.NewErr(mess)
}
fields = hitValue
setField = setStructField
}
ivars := C.lucy_DefDocReader_IVARS(ddrC)
schema := ivars.schema
datInstream := ivars.dat_in
ixInstream := ivars.ix_in
fieldNameCap := C.size_t(31)
var fieldName *C.char = ((*C.char)(C.malloc(fieldNameCap + 1)))
defer C.free(unsafe.Pointer(fieldName))
// Get data file pointer from index, read number of fields.
C.LUCY_InStream_Seek(ixInstream, C.int64_t(docID*8))
start := C.LUCY_InStream_Read_U64(ixInstream)
C.LUCY_InStream_Seek(datInstream, C.int64_t(start))
numFields := uint32(C.LUCY_InStream_Read_C32(datInstream))
// Decode stored data and build up the doc field by field.
for i := uint32(0); i < numFields; i++ {
// Read field name.
fieldNameLen := C.size_t(C.LUCY_InStream_Read_C32(datInstream))
if fieldNameLen > fieldNameCap {
fieldNameCap = fieldNameLen
fieldName = ((*C.char)(C.realloc(unsafe.Pointer(fieldName), fieldNameCap+1)))
}
C.LUCY_InStream_Read_Bytes(datInstream, fieldName, fieldNameLen)
// Find the Field's FieldType.
// TODO: Creating and destroying a new string each time is
// inefficient. The solution should be to add a privte
// Schema_Fetch_Type_Utf8 method which takes char* and size_t.
fieldNameStr := C.cfish_Str_new_from_utf8(fieldName, fieldNameLen)
fieldNameGo := C.GoStringN(fieldName, C.int(fieldNameLen))
fieldType := C.LUCY_Schema_Fetch_Type(schema, fieldNameStr)
C.cfish_dec_refcount(unsafe.Pointer(fieldNameStr))
// Read the field value.
switch C.LUCY_FType_Primitive_ID(fieldType) & C.lucy_FType_PRIMITIVE_ID_MASK {
case C.lucy_FType_TEXT:
valueLen := C.size_t(C.LUCY_InStream_Read_C32(datInstream))
buf := ((*C.char)(C.malloc(valueLen + 1)))
C.LUCY_InStream_Read_Bytes(datInstream, buf, valueLen)
val := C.GoStringN(buf, C.int(valueLen))
err := setField(fields, fieldNameGo, val)
if err != nil {
return err
}
case C.lucy_FType_BLOB:
valueLen := C.size_t(C.LUCY_InStream_Read_C32(datInstream))
buf := ((*C.char)(C.malloc(valueLen)))
C.LUCY_InStream_Read_Bytes(datInstream, buf, valueLen)
val := C.GoBytes(unsafe.Pointer(buf), C.int(valueLen))
err := setField(fields, fieldNameGo, val)
if err != nil {
return err
}
case C.lucy_FType_FLOAT32:
err := setField(fields, fieldNameGo, float32(C.LUCY_InStream_Read_F32(datInstream)))
if err != nil {
return err
}
case C.lucy_FType_FLOAT64:
err := setField(fields, fieldNameGo, float64(C.LUCY_InStream_Read_F64(datInstream)))
if err != nil {
return err
}
case C.lucy_FType_INT32:
err := setField(fields, fieldNameGo, int32(C.LUCY_InStream_Read_C32(datInstream)))
if err != nil {
return err
}
case C.lucy_FType_INT64:
err := setField(fields, fieldNameGo, int64(C.LUCY_InStream_Read_C64(datInstream)))
if err != nil {
return err
}
default:
return clownfish.NewErr(
"Internal Lucy error: bad type id for field " + fieldNameGo)
}
}
return nil
}
func ClearRef(o *ObjIMP) {
C.cfish_dec_refcount(unsafe.Pointer(o.ref))
o.ref = 0
}
//export GOLUCY_DefDocReader_Fetch_Doc
func GOLUCY_DefDocReader_Fetch_Doc(ddr *C.lucy_DefaultDocReader,
docID C.int32_t) *C.lucy_HitDoc {
ivars := C.lucy_DefDocReader_IVARS(ddr)
schema := ivars.schema
datInstream := ivars.dat_in
ixInstream := ivars.ix_in
fields := C.cfish_Hash_new(1)
fieldNameCap := C.size_t(31)
var fieldName *C.char = ((*C.char)(C.malloc(fieldNameCap + 1)))
// Get data file pointer from index, read number of fields.
C.LUCY_InStream_Seek(ixInstream, C.int64_t(docID*8))
start := C.LUCY_InStream_Read_U64(ixInstream)
C.LUCY_InStream_Seek(datInstream, C.int64_t(start))
numFields := uint32(C.LUCY_InStream_Read_C32(datInstream))
// Decode stored data and build up the doc field by field.
for i := uint32(0); i < numFields; i++ {
// Read field name.
fieldNameLen := C.size_t(C.LUCY_InStream_Read_C32(datInstream))
if fieldNameLen > fieldNameCap {
fieldNameCap = fieldNameLen
fieldName = ((*C.char)(C.realloc(unsafe.Pointer(fieldName), fieldNameCap+1)))
}
C.LUCY_InStream_Read_Bytes(datInstream, fieldName, fieldNameLen)
// Find the Field's FieldType.
// TODO: Creating and destroying a new string each time is
// inefficient. The solution should be to add a privte
// Schema_Fetch_Type_Utf8 method which takes char* and size_t.
fieldNameStr := C.cfish_Str_new_from_utf8(fieldName, fieldNameLen)
fieldType := C.LUCY_Schema_Fetch_Type(schema, fieldNameStr)
C.cfish_dec_refcount(unsafe.Pointer(fieldNameStr))
// Read the field value.
var value *C.cfish_Obj
switch C.LUCY_FType_Primitive_ID(fieldType) & C.lucy_FType_PRIMITIVE_ID_MASK {
case C.lucy_FType_TEXT:
valueLen := C.size_t(C.LUCY_InStream_Read_C32(datInstream))
buf := ((*C.char)(C.malloc(valueLen + 1)))
C.LUCY_InStream_Read_Bytes(datInstream, buf, valueLen)
C.null_terminate_string(buf, valueLen)
value = ((*C.cfish_Obj)(C.cfish_Str_new_steal_utf8(buf, valueLen)))
case C.lucy_FType_BLOB:
valueLen := C.size_t(C.LUCY_InStream_Read_C32(datInstream))
buf := ((*C.char)(C.malloc(valueLen)))
C.LUCY_InStream_Read_Bytes(datInstream, buf, valueLen)
value = ((*C.cfish_Obj)(C.cfish_Blob_new_steal(buf, valueLen)))
case C.lucy_FType_FLOAT32:
value = ((*C.cfish_Obj)(C.cfish_Float_new(C.double(C.LUCY_InStream_Read_F32(datInstream)))))
case C.lucy_FType_FLOAT64:
value = ((*C.cfish_Obj)(C.cfish_Float_new(C.LUCY_InStream_Read_F64(datInstream))))
case C.lucy_FType_INT32:
value = ((*C.cfish_Obj)(C.cfish_Int_new(C.int64_t(C.LUCY_InStream_Read_C32(datInstream)))))
case C.lucy_FType_INT64:
value = ((*C.cfish_Obj)(C.cfish_Int_new(C.int64_t(C.LUCY_InStream_Read_C64(datInstream)))))
default:
value = nil
panic(clownfish.NewErr("Internal Lucy error: bad type id for field " +
C.GoStringN(fieldName, C.int(fieldNameLen))))
}
// Store the value.
C.CFISH_Hash_Store_Utf8(fields, fieldName, fieldNameLen, value)
}
C.free(unsafe.Pointer(fieldName))
retval := C.lucy_HitDoc_new(unsafe.Pointer(fields), docID, 0.0)
C.cfish_dec_refcount(unsafe.Pointer(fields))
return retval
}