Thanks for the solutions to #2 & #3. I assume by your last comment that the call back hooks are not yet in the DIH are features that will be released in the future as patches, correct?
> From: Noble Paul നോബിള് नोब्ळ् <[EMAIL PROTECTED]> > Reply-To: <solr-user@lucene.apache.org> > Date: Mon, 21 Jul 2008 23:25:15 +0530 > To: <solr-user@lucene.apache.org> > Subject: Re: DIH: post-import action & independent SQL statements > > Overtime we have realized this as a common pattern of requirements. > a pre-import, post-import call back hooks are something I can think of. > > > > On Mon, Jul 21, 2008 at 11:13 PM, Jonathan Lee <[EMAIL PROTECTED]> > wrote: >> Hello, >> >> I have been using the DataImportHandler successfully to import documents >> from MySQL, and it has worked very well. However I have three questions >> about the handler: >> >> 1. Is it possible to execute a command post-import? Specifically, I would >> like to run snapshooter after both full & delta imports. The postOptimize & >> postCommit listeners do not quite work here since I do not want to optimize >> after delta imports, and I do not want to run snapshooter for each auto >> commit during a full import. >> >> 2. Is it possible to execute independent SQL statements before, during, or >> after importing? I would like to created some intermediate temporary tables >> and also set specific settings relevant to the import (e.g. "SET >> @@group_concat_max_len=..."). > During the import it is definitely possible. Any transformer can > obtain a DataSource as context.getDataSource(<name>) and invoke any > methods .The getData(string query can actually execute anything) > >> >> 3. It would be great to have a way to chain together multiple Transformers. >> For instance, I'd like to perform regex operations, then template the output >> and finally add a custom document boost based on a column. This could be >> done by chaining the RegexTransformer, TemplateTransformer and a custom >> Transformer. > I guess chaining is possible already. > transformer="RegexTransformer,TemplateTransformer,my.CustomTransformer" > can chain the 3 transformers >> >> Thanks for your help! >> >> Jonathan Lee >> >> > There are a bunch of features we have in mind. We do not want to make > the patch bigger than it already is and we are waiting for it get > committed so that we can provide incremental patches for these > > -- > --Noble Paul
