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From Marc Sturlese <marc.sturl...@gmail.com>
Subject Re: DataImportHandler: Deleteing from index and db; lastIndexed id feature
Date Tue, 02 Dec 2008 21:58:48 GMT

Do you mean the file used by dataimporthandler called dataimport.properties? 
If you mean this one it's writen at the end of the indexing proccess. The
writen date will be used in the next indexation by delta-query to identify
the new or modified rows from the database.

What I am trying to do is instead of saving a timestamp save the last
indexed id. Doing that, in the next execution I will start indexing from the
last doc that was indexed in the previous indexation. But I am still a bit
confused about how to do that...

Noble Paul നോബിള്‍ नोब्ळ् wrote:
> 
> delta-import file?
> 
> 
> On Wed, Dec 3, 2008 at 12:08 AM, Lance Norskog <goksron@gmail.com> wrote:
>> Does the DIH delta feature rewrite the delta-import file for each set of
>> rows? If it does not, that sounds like a bug/enhancement.
>> Lance
>>
>> -----Original Message-----
>> From: Noble Paul നോബിള്‍ नोब्ळ् [mailto:noble.paul@gmail.com]
>> Sent: Tuesday, December 02, 2008 8:51 AM
>> To: solr-user@lucene.apache.org
>> Subject: Re: DataImportHandler: Deleteing from index and db; lastIndexed
>> id feature
>>
>> You can write the details to a file using a Transformer itself.
>>
>> It is wise to stick to the public API as far as possible. We will
>> maintain back compat and your code will be usable w/ newer versions.
>>
>>
>> On Tue, Dec 2, 2008 at 5:12 PM, Marc Sturlese <marc.sturlese@gmail.com>
>> wrote:
>>>
>>> Thanks I really apreciate your help.
>>>
>>> I didn't explain myself so well in here:
>>>
>>>> 2.-This is probably my most difficult goal.
>>>> Deltaimport reads a timestamp from the dataimport.properties and
>>>> modify/add all documents from db wich were inserted after that date.
>>>> What I want is to be able to save in the field the id of the last
>>>> idexed doc. So in the next time I ejecute the indexer make it start
>>>> indexing from that last indexed id doc.
>>> You can use a Transformer to write something to the DB.
>>> Context#getDataSource(String) for each row
>>>
>>> When I said:
>>>
>>>> be able to save in the field the id of the last idexed doc
>>> I made a mistake, wanted to mean :
>>>
>>> be able to save in the file (dataimport.properties) the id of the last
>>> indexed doc.
>>> The point would be to do my own deltaquery indexing from the last doc
>>> indexed id instead of the timestamp.
>>> So I think this would not work in that case (it's my mistake because
>>> of the bad explanation):
>>>
>>>>You can use a Transformer to write something to the DB.
>>>>Context#getDataSource(String) for each row
>>>
>>> It is because I was saying:
>>>> I think I should begin modifying the SolrWriter.java and
>>>> DocBuilder.java.
>>>> Creating functions like getStartTime, persistStartTime... for ID
>>>> control
>>>
>>> I am in the correct direction?
>>>  Sorry for my englis and thanks in advance
>>>
>>>
>>> Noble Paul നോബിള്‍ नोब्ळ् wrote:
>>>>
>>>> On Tue, Dec 2, 2008 at 3:01 PM, Marc Sturlese
>>>> <marc.sturlese@gmail.com>
>>>> wrote:
>>>>>
>>>>> Hey there,
>>>>>
>>>>> I have my dataimporthanlder almost completely configured. I am
>>>>> missing three goals. I don't think I can reach them just via xml
>>>>> conf or transformer and sqlEntitProcessor plugin. But need to be
>>>>> sure of that.
>>>>> If there's no other way I will hack some solr source classes, would
>>>>> like to know the best way to do that. Once I have it solved, I can
>>>>> upload or post the source in the forum in case someone think it can
>>>>> be helpful.
>>>>>
>>>>> 1.- Every time I execute dataimporthandler (to index data from a
>>>>> db), at the start time or end time I need to delete some expired
>>>>> documents. I have to delete them from the database and from the
>>>>> index. I know wich documents must be deleted because of a field in
>>>>> the db that says it. Would not like to delete first all from DB or
>>>>> first all from index but one from index and one from doc every time.
>>>>
>>>> You can override the init() destroy() of the SqlEntityProcessor and
>>>> use it as the processor for the root entity. At this point you can
>>>> run the necessary db queries and solr delete queries . look at
>>>> Context#getSolrCore() and Context#getdataSource(String)
>>>>
>>>>
>>>>> The "delete mark" is setted as an update in the db row so I think I
>>>>> could use deltaImport. Don't know If deletedPkQuery is the way to do
>>>>> that. Can not find so much information about how to make it work. As
>>>>> deltaQuery modifies docs (delete old and insert new) I supose it
>>>>> must be a easy way to do this just doing the delete and not the new
>>>>> insert.
>>>> deletedPkQuery does everything first. it runs the query and uses that
>>>> to identify the deleted rows.
>>>>>
>>>>> 2.-This is probably my most difficult goal.
>>>>> Deltaimport reads a timestamp from the dataimport.properties and
>>>>> modify/add all documents from db wich were inserted after that date.
>>>>> What I want is to be able to save in the field the id of the last
>>>>> idexed doc. So in the next time I ejecute the indexer make it start
>>>>> indexing from that last indexed id doc.
>>>> You can use a Transformer to write something to the DB.
>>>> Context#getDataSource(String) for each row
>>>>
>>>>> The point of doing this is that if I do a full import from a db with
>>>>> lots of rows the app could encounter a problem in the middle of the
>>>>> execution and abort the process. As deltaquey works I would have to
>>>>> restart the execution from the begining. Having this new
>>>>> functionality I could optimize the index and start from the last
>>>>> indexed doc.
>>>>> I think I should begin modifying the SolrWriter.java and
>>>>> DocBuilder.java.
>>>>> Creating functions like getStartTime, persistStartTime... for ID
>>>>> control
>>>>>
>>>>> 3.-I commented before about this last point. I want to give boost to
>>>>> doc fields at indexing time.
>>>>>>>Adding fieldboost is a planned item.
>>>>>
>>>>>>>It must work as follows .
>>>>>>>Add a special value $fieldBoost.<fieldname> to the row map
>>>>>
>>>>>>>And DocBuilder should respect that. You can raise a bug and we
can
>>>>>>>commit it soon.
>>>>> How can I do to rise a bug?
>>>> https://issues.apache.org/jira/secure/CreateIssue!default.jspa
>>>>>
>>>>> Thanks in advance
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>> http://www.nabble.com/DataImportHandler%3A-Deleteing-from-index-and-
>>>>> db--lastIndexed-id-feature-tp20788755p20788755.html
>>>>> Sent from the Solr - User mailing list archive at Nabble.com.
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> --Noble Paul
>>>>
>>>>
>>>
>>> --
>>> View this message in context:
>>> http://www.nabble.com/DataImportHandler%3A-Deleteing-from-index-and-db
>>> --lastIndexed-id-feature-tp20788755p20790542.html
>>> Sent from the Solr - User mailing list archive at Nabble.com.
>>>
>>>
>>
>>
>>
>> --
>> --Noble Paul
>>
>>
> 
> 
> 
> -- 
> --Noble Paul
> 
> 

-- 
View this message in context: http://www.nabble.com/DataImportHandler%3A-Deleteing-from-index-and-db--lastIndexed-id-feature-tp20788755p20801932.html
Sent from the Solr - User mailing list archive at Nabble.com.


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