func (s *scanner) readPage(r io.Reader, header *thrift.PageHeader) error {
switch header.GetType() {
case thrift.PageType_INDEX_PAGE:
if !header.IsSetIndexPageHeader() {
return nil
}
s.indexPage = NewIndexPage(header.GetIndexPageHeader())
// TODO read indexPage
return nil
case thrift.PageType_DICTIONARY_PAGE:
if !header.IsSetDictionaryPageHeader() {
return fmt.Errorf("bad file format:DictionaryPageHeader flag was not set")
}
dictHeader := header.GetDictionaryPageHeader()
s.dictionary = NewDictionaryPage(s.schema, dictHeader)
return s.dictionary.Decode(r)
case thrift.PageType_DATA_PAGE_V2:
panic("nyi")
case thrift.PageType_DATA_PAGE:
s.totalRead += int(header.GetDataPageHeader().GetNumValues())
if !header.IsSetDataPageHeader() {
return fmt.Errorf("bad file format: DataPageHeader flag was not set")
}
s.dataPage = NewDataPage(s.schema, header.GetDataPageHeader())
return s.dataPage.ReadAll(r)
default:
return fmt.Errorf("unknown PageHeader.PageType: %s", header.GetType())
}
}
