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package dynamodb
import (
"errors"
"fmt"
simplejson "github.com/bitly/go-simplejson"
)
func (t *Table) FetchResults(query *Query) ([]map[string]*Attribute, error) {
jsonResponse, err := t.Server.queryServer(target("Scan"), query)
if err != nil {
return nil, err
}
json, err := simplejson.NewJson(jsonResponse)
if err != nil {
return nil, err
}
itemCount, err := json.Get("Count").Int()
if err != nil {
message := fmt.Sprintf("Unexpected response %s", jsonResponse)
return nil, errors.New(message)
}
results := make([]map[string]*Attribute, itemCount)
for i, _ := range results {
item, err := json.Get("Items").GetIndex(i).Map()
if err != nil {
message := fmt.Sprintf("Unexpected response %s", jsonResponse)
return nil, errors.New(message)
}
results[i] = parseAttributes(item)
}
return results, nil
}
func (t *Table) Scan(attributeComparisons []AttributeComparison) ([]map[string]*Attribute, error) {
q := NewQuery(t)
q.AddScanFilter(attributeComparisons)
return t.FetchResults(q)
}
func (t *Table) ParallelScan(attributeComparisons []AttributeComparison, segment int, totalSegments int) ([]map[string]*Attribute, error) {
q := NewQuery(t)
q.AddScanFilter(attributeComparisons)
q.AddParallelScanConfiguration(segment, totalSegments)
return t.FetchResults(q)
}
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