func getScanConfiguration(a httpRequestArgs) (*scanConfigImpl, errors.Error) {
scan_consistency_field, err := a.getString(SCAN_CONSISTENCY, "NOT_BOUNDED")
if err != nil {
return nil, err
}
scan_level := newScanConsistency(scan_consistency_field)
if scan_level == server.UNDEFINED_CONSISTENCY {
return nil, errors.NewServiceErrorUnrecognizedValue(SCAN_CONSISTENCY, scan_consistency_field)
}
scan_wait, err := a.getDuration(SCAN_WAIT)
if err != nil {
return nil, err
}
scan_vector, err := a.getScanVector()
if err != nil {
return nil, err
}
scan_vectors, err := a.getScanVectors()
if err != nil {
return nil, err
}
var scan_vector_source timestamp.ScanVectorSource
if scan_vector == nil {
if scan_vectors == nil {
if scan_level == server.AT_PLUS && scan_vector == nil && scan_vectors == nil {
return nil, errors.NewServiceErrorMissingValue(SCAN_VECTOR)
}
scan_vector_source = &ZeroScanVectorSource{}
} else {
defaultNamespace, err := a.getString(NAMESPACE, "default")
if err != nil {
return nil, err
}
scan_vector_source = newMultipleScanVectorSource(defaultNamespace, scan_vectors)
}
} else {
if scan_vectors == nil {
scan_vector_source = &singleScanVectorSource{scan_vector: scan_vector}
} else {
// Not both scan_vector and scan_vectors.
return nil, errors.NewServiceErrorMultipleValues("scan_vector and scan_vectors")
}
}
return &scanConfigImpl{
scan_level: scan_level,
scan_wait: scan_wait,
scan_vector_source: scan_vector_source,
}, nil
}
func (this *urlArgs) formValue(field string) (string, errors.Error) {
values := this.getField(field)
switch len(values) {
case 0:
return "", nil
case 1:
return values[0], nil
default:
return "", errors.NewServiceErrorMultipleValues(field)
}
}