func (udc *UpsideDownCouch) indexField(docID string, field document.Field, fieldIndex uint16, fieldLength int, tokenFreqs analysis.TokenFrequencies) ([]UpsideDownCouchRow, []*BackIndexTermEntry) {
rows := make([]UpsideDownCouchRow, 0, 100)
backIndexTermEntries := make([]*BackIndexTermEntry, 0)
fieldNorm := float32(1.0 / math.Sqrt(float64(fieldLength)))
for _, tf := range tokenFreqs {
var termFreqRow *TermFrequencyRow
if field.Options().IncludeTermVectors() {
tv, newFieldRows := udc.termVectorsFromTokenFreq(fieldIndex, tf)
rows = append(rows, newFieldRows...)
termFreqRow = NewTermFrequencyRowWithTermVectors(tf.Term, fieldIndex, docID, uint64(frequencyFromTokenFreq(tf)), fieldNorm, tv)
} else {
termFreqRow = NewTermFrequencyRow(tf.Term, fieldIndex, docID, uint64(frequencyFromTokenFreq(tf)), fieldNorm)
}
// record the back index entry
backIndexTermEntry := BackIndexTermEntry{Term: proto.String(string(tf.Term)), Field: proto.Uint32(uint32(fieldIndex))}
backIndexTermEntries = append(backIndexTermEntries, &backIndexTermEntry)
rows = append(rows, termFreqRow)
}
return rows, backIndexTermEntries
}
func (udc *UpsideDownCouch) storeField(docID string, field document.Field, fieldIndex uint16) ([]UpsideDownCouchRow, []*BackIndexStoreEntry) {
rows := make([]UpsideDownCouchRow, 0, 100)
backIndexStoredEntries := make([]*BackIndexStoreEntry, 0)
fieldType := encodeFieldType(field)
storedRow := NewStoredRow(docID, fieldIndex, field.ArrayPositions(), fieldType, field.Value())
// record the back index entry
backIndexStoredEntry := BackIndexStoreEntry{Field: proto.Uint32(uint32(fieldIndex)), ArrayPositions: field.ArrayPositions()}
backIndexStoredEntries = append(backIndexStoredEntries, &backIndexStoredEntry)
rows = append(rows, storedRow)
return rows, backIndexStoredEntries
}