/
dimension.go
436 lines (406 loc) · 13.9 KB
/
dimension.go
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package tiledb
/*
#cgo LDFLAGS: -ltiledb
#cgo linux LDFLAGS: -ldl
#include <tiledb/tiledb.h>
#include <stdlib.h>
*/
import "C"
import (
"fmt"
"os"
"reflect"
"runtime"
"strconv"
"unsafe"
)
// Dimension Describes one dimension of an Array.
// The dimension consists of a type, lower and upper bound, and tile-extent
// describing the memory ordering. Dimensions are added to a Domain.
type Dimension struct {
tiledbDimension *C.tiledb_dimension_t
context *Context
}
// NewDimension alloc a new dimension
func NewDimension(context *Context, name string, domain interface{}, extent interface{}) (*Dimension, error) {
dimension := Dimension{context: context}
var cname *C.char = C.CString(name)
defer C.free(unsafe.Pointer(cname))
if reflect.TypeOf(domain).Kind() != reflect.Slice {
return nil, fmt.Errorf("Domain passed must be a slice of two integers or two floats, type passed was: %s", reflect.TypeOf(domain).Kind().String())
}
domainInterfaceVal := reflect.ValueOf(domain)
if domainInterfaceVal.Len() != 2 {
return nil, fmt.Errorf("Domain passed must be a slice of two integers or two floats, size of slice is: %d", domainInterfaceVal.Len())
}
domainType := reflect.TypeOf(domain).Elem().Kind()
extentType := reflect.TypeOf(extent).Kind()
if extentType != domainType {
return nil, fmt.Errorf("Domaing and extent do not have the same data types. Domain: %s, Extent: %s", domainType.String(), extentType.String())
}
var datatype Datatype
var ret C.int32_t
// Convert domain to type then to void*
var cdomain unsafe.Pointer
// Convert extent to type then to void*
var cextent unsafe.Pointer
// Switch on domain type to create void* for domain and extent.
// Extent has already checked to be same type as domain so this is safe
switch domainType {
case reflect.Int:
// Check size of int on platform
if strconv.IntSize == 32 {
datatype = TILEDB_INT32
} else {
datatype = TILEDB_INT64
}
// Create domain void*
tmpDomain := domain.([]int)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(int))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Int8:
datatype = TILEDB_INT8
// Create domain void*
tmpDomain := domain.([]int8)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(int8))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Int16:
datatype = TILEDB_INT16
// Create domain void*
tmpDomain := domain.([]int16)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(int16))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Int32:
datatype = TILEDB_INT32
// Create domain void*
tmpDomain := domain.([]int32)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(int32))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Int64:
datatype = TILEDB_INT64
// Create domain void*
tmpDomain := domain.([]int64)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(int64))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Uint:
// Check size of uint on platform
if strconv.IntSize == 32 {
datatype = TILEDB_UINT32
} else {
datatype = TILEDB_UINT64
}
// Create domain void*
tmpDomain := domain.([]uint)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(uint))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Uint8:
datatype = TILEDB_UINT8
// Create domain void*
tmpDomain := domain.([]uint8)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(uint8))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Uint16:
datatype = TILEDB_UINT16
// Create domain void*
tmpDomain := domain.([]uint16)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(uint16))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Uint32:
datatype = TILEDB_UINT32
// Create domain void*
tmpDomain := domain.([]uint32)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(uint32))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Uint64:
datatype = TILEDB_UINT64
// Create domain void*
tmpDomain := domain.([]uint64)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(uint64))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Float32:
datatype = TILEDB_FLOAT32
// Create domain void*
tmpDomain := domain.([]float32)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(float32))
cextent = unsafe.Pointer(&tmpExtent)
case reflect.Float64:
datatype = TILEDB_FLOAT64
// Create domain void*
tmpDomain := domain.([]float64)
cdomain = unsafe.Pointer(&tmpDomain[0])
// Create extent void*
tmpExtent := (extent.(float64))
cextent = unsafe.Pointer(&tmpExtent)
default:
return nil, fmt.Errorf("Unrecognized domain type passed: %s", domainInterfaceVal.Index(0).Kind().String())
}
ret = C.tiledb_dimension_alloc(context.tiledbContext, cname, C.tiledb_datatype_t(datatype), cdomain, cextent, &dimension.tiledbDimension)
if ret != C.TILEDB_OK {
return nil, fmt.Errorf("Error creating tiledb dimension: %s", context.LastError())
}
// Set finalizer for free C pointer on gc
runtime.SetFinalizer(&dimension, func(dimension *Dimension) {
dimension.Free()
})
return &dimension, nil
}
// Free tiledb_dimension_t that was allocated on heap in c
func (d *Dimension) Free() {
if d.tiledbDimension != nil {
C.tiledb_dimension_free(&d.tiledbDimension)
}
}
// Name returns the name of the dimension
func (d *Dimension) Name() (string, error) {
var cName *C.char
defer C.free(unsafe.Pointer(cName))
ret := C.tiledb_dimension_get_name(d.context.tiledbContext, d.tiledbDimension, &cName)
if ret != C.TILEDB_OK {
return "", fmt.Errorf("Error getting tiledb dimension name: %s", d.context.LastError())
}
return C.GoString(cName), nil
}
// Type returns the type of the dimension
func (d *Dimension) Type() (Datatype, error) {
var cType C.tiledb_datatype_t
ret := C.tiledb_dimension_get_type(d.context.tiledbContext, d.tiledbDimension, &cType)
if ret != C.TILEDB_OK {
return 0, fmt.Errorf("Error getting tiledb dimension type: %s", d.context.LastError())
}
return Datatype(cType), nil
}
// Domain returns the dimension's domain
func (d *Dimension) Domain() (interface{}, error) {
datatype, err := d.Type()
if err != nil {
return nil, err
}
var ret C.int32_t
var domain interface{}
switch datatype {
case TILEDB_INT8:
cdomain := C.malloc(2 * C.sizeof_int8_t)
defer C.free(cdomain)
tmpDomain := make([]int8, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.int8_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = int8(s)
}
domain = tmpDomain
case TILEDB_INT16:
cdomain := C.malloc(2 * C.sizeof_int16_t)
defer C.free(cdomain)
tmpDomain := make([]int16, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.int16_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = int16(s)
}
domain = tmpDomain
case TILEDB_INT32:
cdomain := C.malloc(2 * C.sizeof_int32_t)
defer C.free(cdomain)
tmpDomain := make([]int32, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.int32_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = int32(s)
}
domain = tmpDomain
case TILEDB_INT64:
cdomain := C.malloc(2 * C.sizeof_int64_t)
defer C.free(cdomain)
tmpDomain := make([]int64, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.int64_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = int64(s)
}
domain = tmpDomain
case TILEDB_UINT8:
cdomain := C.malloc(2 * C.sizeof_uint8_t)
defer C.free(cdomain)
tmpDomain := make([]uint8, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.uint8_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = uint8(s)
}
domain = tmpDomain
case TILEDB_UINT16:
cdomain := C.malloc(2 * C.sizeof_uint16_t)
defer C.free(cdomain)
tmpDomain := make([]uint16, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.uint16_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = uint16(s)
}
domain = tmpDomain
case TILEDB_UINT32:
cdomain := C.malloc(2 * C.sizeof_uint32_t)
defer C.free(cdomain)
tmpDomain := make([]uint32, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.uint32_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = uint32(s)
}
domain = tmpDomain
case TILEDB_UINT64:
cdomain := C.malloc(2 * C.sizeof_uint64_t)
defer C.free(cdomain)
tmpDomain := make([]uint64, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.uint64_t)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = uint64(s)
}
domain = tmpDomain
case TILEDB_FLOAT32:
cdomain := C.malloc(2 * C.sizeof_float)
defer C.free(cdomain)
tmpDomain := make([]float32, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.float)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = float32(s)
}
domain = tmpDomain
case TILEDB_FLOAT64:
cdomain := C.malloc(2 * C.sizeof_double)
defer C.free(cdomain)
tmpDomain := make([]float64, 2)
ret = C.tiledb_dimension_get_domain(d.context.tiledbContext, d.tiledbDimension, &cdomain)
tmpslice := (*[1 << 46]C.double)(unsafe.Pointer(cdomain))[:2:2]
for i, s := range tmpslice {
tmpDomain[i] = float64(s)
}
domain = tmpDomain
default:
return nil, fmt.Errorf("Unrecognized domain type: %d", datatype)
}
if ret != C.TILEDB_OK {
return nil, fmt.Errorf("Error getting tiledb dimension's domain: %s", d.context.LastError())
}
return domain, nil
}
// Extent returns the dimension's extent
func (d *Dimension) Extent() (interface{}, error) {
datatype, err := d.Type()
if err != nil {
return nil, err
}
var ret C.int32_t
var extent interface{}
switch datatype {
case TILEDB_INT8:
cextent := C.malloc(C.sizeof_int8_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*int8)(unsafe.Pointer(cextent))
case TILEDB_INT16:
cextent := C.malloc(C.sizeof_int16_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*int16)(unsafe.Pointer(cextent))
case TILEDB_INT32:
cextent := C.malloc(C.sizeof_int32_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*int32)(unsafe.Pointer(cextent))
case TILEDB_INT64:
cextent := C.malloc(C.sizeof_int64_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*int64)(unsafe.Pointer(cextent))
case TILEDB_UINT8:
cextent := C.malloc(C.sizeof_uint8_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*uint8)(unsafe.Pointer(cextent))
case TILEDB_UINT16:
cextent := C.malloc(C.sizeof_uint16_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*uint16)(unsafe.Pointer(cextent))
case TILEDB_UINT32:
cextent := C.malloc(C.sizeof_uint32_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*uint32)(unsafe.Pointer(cextent))
case TILEDB_UINT64:
cextent := C.malloc(C.sizeof_uint64_t)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*uint64)(unsafe.Pointer(cextent))
case TILEDB_FLOAT32:
cextent := C.malloc(C.sizeof_float)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*float32)(unsafe.Pointer(cextent))
case TILEDB_FLOAT64:
cextent := C.malloc(C.sizeof_double)
defer C.free(cextent)
ret = C.tiledb_dimension_get_tile_extent(d.context.tiledbContext, d.tiledbDimension, &cextent)
extent = *(*float64)(unsafe.Pointer(cextent))
default:
return nil, fmt.Errorf("Unrecognized extent type: %d", datatype)
}
if ret != C.TILEDB_OK {
return nil, fmt.Errorf("Error getting tiledb dimension's extent: %s", d.context.LastError())
}
return extent, nil
}
// DumpSTDOUT Dumps the dimension in ASCII format to stdout
func (d *Dimension) DumpSTDOUT() error {
ret := C.tiledb_dimension_dump(d.context.tiledbContext, d.tiledbDimension, C.stdout)
if ret != C.TILEDB_OK {
return fmt.Errorf("Error dumping dimension to stdout: %s", d.context.LastError())
}
return nil
}
// Dump Dumps the dimension in ASCII format in the selected output.
func (d *Dimension) Dump(path string) error {
if _, err := os.Stat(path); err == nil {
return fmt.Errorf("Error path already %s exists", path)
}
// Convert to char *
cPath := C.CString(path)
defer C.free(unsafe.Pointer(cPath))
// Set mode as char*
cMode := C.CString("w")
defer C.free(unsafe.Pointer(cMode))
// Open file to get FILE*
cFile := C.fopen(cPath, cMode)
defer C.fclose(cFile)
// Dump dimension to file
ret := C.tiledb_dimension_dump(d.context.tiledbContext, d.tiledbDimension, cFile)
if ret != C.TILEDB_OK {
return fmt.Errorf("Error dumping dimension to file %s: %s", path, d.context.LastError())
}
return nil
}