// Generic operation that returns objects
func (client *Client) objOp(funcName, space, key string, conds []Condition) ObjectChannel {
objCh := make(chan Object, CHANNEL_BUFFER_SIZE)
var status C.enum_hyperdex_client_returncode
var C_attrs *C.struct_hyperdex_client_attribute
var C_attrs_sz C.size_t
var C_attr_checks *C.struct_hyperdex_client_attribute_check
var C_attr_checks_sz C.size_t
var err error
if conds != nil {
C_attr_checks, C_attr_checks_sz, err = client.newCAttributeCheckList(conds)
if err != nil {
objCh <- Object{
Err: err,
}
close(objCh)
return objCh
}
}
var req_id int64
switch funcName {
case "get":
req_id = int64(C.hyperdex_client_get(client.ptr, C.CString(space),
C.CString(key), C.size_t(bytesOf(key)),
&status, &C_attrs, &C_attrs_sz))
case "search":
req_id = int64(C.hyperdex_client_search(client.ptr,
C.CString(space), C_attr_checks, C_attr_checks_sz,
&status, &C_attrs, &C_attrs_sz))
}
if req_id < 0 {
objCh <- Object{Err: newInternalError(status,
C.GoString(C.hyperdex_client_error_message(client.ptr)))}
close(objCh)
return objCh
}
req := request{
id: req_id,
status: &status,
}
switch funcName {
case "get":
req.success = func() {
attrs, err := client.newAttributeListFromC(C_attrs, C_attrs_sz)
if err != nil {
objCh <- Object{Err: err}
close(objCh)
return
}
objCh <- Object{Err: nil, Key: key, Attrs: attrs}
close(objCh)
if C_attrs_sz > 0 {
C.hyperdex_client_destroy_attrs(C_attrs, C_attrs_sz)
}
}
req.failure = objChannelFailureCallback(objCh)
case "search":
req.isIterator = true
req.success = func() {
// attrs, err := newAttributeListFromC(C_attrs, C_attrs_sz)
attrs, err := client.newAttributeListFromC(C_attrs, C_attrs_sz)
if err != nil {
objCh <- Object{Err: err}
close(objCh)
return
}
if C_attrs_sz > 0 {
C.hyperdex_client_destroy_attrs(C_attrs, C_attrs_sz)
}
objCh <- Object{Attrs: attrs}
}
req.failure = objChannelFailureCallback(objCh)
req.complete = func() {
close(objCh)
}
}
client.requests = append(client.requests, req)
return objCh
}
func (client *Client) SortedSearch(space string, conds []Condition, sort_by string,
limit int, maxmin int) ObjectChannel {
objCh := make(chan Object, CHANNEL_BUFFER_SIZE)
var status C.enum_hyperdex_client_returncode
var C_attrs *C.struct_hyperdex_client_attribute
var C_attrs_sz C.size_t
var C_attr_checks *C.struct_hyperdex_client_attribute_check
var C_attr_checks_sz C.size_t
var err error
if conds != nil {
C_attr_checks, C_attr_checks_sz, err = client.newCAttributeCheckList(conds)
if err != nil {
objCh <- Object{
Err: err,
}
close(objCh)
return objCh
}
}
req_id := int64(C.hyperdex_client_sorted_search(client.ptr,
C.CString(space), C_attr_checks, C_attr_checks_sz,
C.CString(sort_by), C.uint64_t(limit), C.int(maxmin),
&status, &C_attrs, &C_attrs_sz))
if req_id < 0 {
objCh <- Object{Err: newInternalError(status,
C.GoString(C.hyperdex_client_error_message(client.ptr)))}
close(objCh)
return objCh
}
req := request{
id: req_id,
status: &status,
isIterator: true,
success: func() {
// attrs, err := newAttributeListFromC(C_attrs, C_attrs_sz)
attrs, err := client.newAttributeListFromC(C_attrs, C_attrs_sz)
if err != nil {
objCh <- Object{Err: err}
close(objCh)
return
}
if C_attrs_sz > 0 {
C.hyperdex_client_destroy_attrs(C_attrs, C_attrs_sz)
}
objCh <- Object{Attrs: attrs}
},
failure: objChannelFailureCallback(objCh),
complete: func() {
close(objCh)
},
}
client.requests = append(client.requests, req)
return objCh
}