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xdataset_row.go
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xdataset_row.go
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package xdataset
import (
"fmt"
"github.com/go-xe2/x/xf/ef/xqi"
"io"
)
type tDatasetRow struct {
ds *tDataset
rowIndex int
}
var _ xqi.DatasetRow = (*tDatasetRow)(nil)
func newDatasetRow(ds *tDataset, rowIndex int) *tDatasetRow {
return &tDatasetRow{
ds: ds,
rowIndex: rowIndex,
}
}
func (dsr *tDatasetRow) RowIndex() int {
return dsr.ds.cursor
}
func (dsr *tDatasetRow) Field(index int) xqi.DSField {
return dsr.fieldByIndex(index)
}
func (dsr *tDatasetRow) fieldByIndex(index int) *tDsField {
return dsr.ds.fieldByColRow(index, dsr.rowIndex)
}
func (dsr *tDatasetRow) fieldByName(name string) *tDsField {
return dsr.ds.fieldByNameRow(name, dsr.rowIndex)
}
func (dsr *tDatasetRow) FieldByName(name string) xqi.DSField {
return dsr.fieldByName(name)
}
func (dsr *tDatasetRow) Values() []interface{} {
return dsr.ds.rowData(dsr.rowIndex)
}
func (dsr *tDatasetRow) Names() []string {
return dsr.ds.fields.Names()
}
func (dsr *tDatasetRow) Delete() {
dsr.ds.DeleteByRow(dsr.rowIndex)
}
func (dsr *tDatasetRow) ToMap() map[string]interface{} {
result := make(map[string]interface{})
for i := 0; i < dsr.ds.FieldCount(); i++ {
result[dsr.Field(i).FieldName()] = dsr.Field(i).Value()
}
return result
}
func (dsr *tDatasetRow) WriteJson(writer io.Writer) (n int, err error) {
size := 0
if n, err := writer.Write([]byte("{ ")); err != nil {
return size, err
} else {
size += n
}
isEmpty := true
for i := 0; i < dsr.ds.FieldCount(); i++ {
fd := dsr.fieldByIndex(i)
if fd.Value() == nil {
continue
}
if !isEmpty {
if n, err := writer.Write([]byte{','}); err != nil {
return size, err
} else {
size += n
}
}
isEmpty = false
if n, err := writer.Write([]byte(fmt.Sprintf(`"%d":`, i))); err != nil {
return size, err
} else {
size += n
}
if n, err := fd.writeDataJson(writer); err != nil {
return size, err
} else {
size += n
}
}
if n, err := writer.Write([]byte(" }")); err != nil {
return size, err
} else {
size += n
}
return size, nil
}