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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1590) Stored-only fields automatically enable norms and tf when added to document
Date Wed, 08 Apr 2009 10:20:13 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler updated LUCENE-1590:
----------------------------------

    Attachment: LUCENE-1590.patch

Here is the final patch. I added two tests (one for the bug itsself) and one for the additional
bug in FieldsReader, that does not propagate omitNorms and omitTf to the Fieldable on loading.
I also found a bug in FieldInfos, that forgets to add omitTf if the FieldInfos are loaded
from a Document instance (I realized this during changing the FieldsReader test).

All core tests pass.

It would be really good, if somebody with good knowledge of the internals could review the
patch, as there are a lot of things, I do not understand completely.

> Stored-only fields automatically enable norms and tf when added to document
> ---------------------------------------------------------------------------
>
>                 Key: LUCENE-1590
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1590
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.4, 2.4.1, 2.9
>            Reporter: Uwe Schindler
>             Fix For: 2.9
>
>         Attachments: LUCENE-1590.patch, LUCENE-1590.patch, LUCENE-1590.patch
>
>
> During updating my internal components to the new TrieAPI, I have seen the following:
> I index a lot of numeric fields with trie encoding omitting norms and term frequency.
This works great. Luke shows that both is omitted.
> As I sometimes also want to have the components of the field stored and want to use the
same field name for it. So I add additionally the field again to the document, but stored
only (as the Field c'tor using a TokenStream cannot additionally store the field). As it is
stored only, I thought, that I can left out explicit setting of omitNorms and omitTermFreqAndPositions.
After adding the stored-only-without-omits field, Luke shows all fields with norms enabled.
I am not sure, if the norms/tf were really added to the index, but Luke shows a value for
the norms and FieldInfo has it enabled.
> In my opinion, this is not intuitive, o.a.l.document.Field  should switch both omit*
options on when storing fields only (and also disable other indexing-only options). Alternatively
the internal FieldInfo.update(boolean isIndexed, boolean storeTermVector, boolean storePositionWithTermVector,
boolean storeOffsetWithTermVector, boolean omitNorms, boolean storePayloads, boolean omitTermFreqAndPositions)
should only change the omit* and other options, if the isIndexed parameter (not this.isIndexed)
is also true, elsewhere leave it as it is.
> In principle, when adding a stored-only field, any indexing-specific options should not
be changed in FieldInfo. If the field was indexed with norms before, norms should stay enabled
(but this would be the default as it is).

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