>
> datasource.getData("update mytable ...."); //though the name is getData()
> it can execute update commands also
>
Even when the dataSource is "readOnly", Noble?
Cheers
Avlesh
2009/8/4 Noble Paul നോബിള് नोब्ळ् <noble.p...@corp.aol.com>
> If your are writing a Transformer (or any other component) you can get
> hold of a dataSource instance .
>
> datasource =Context#getDataSource(name).
> //then you can invoke
> datasource.getData("update mytable ....");
> //though the name is getData() it can execute update commands also
>
> ensure that you do a
> datasource.close();
> after you are done
>
> On Tue, Aug 4, 2009 at 9:40 AM, Avlesh Singh<avl...@gmail.com> wrote:
> > Couple of things -
> >
> > 1. Your dataSource is probably in readOnly mode. It is possible to fire
> > updates, by specifying readOnly="false" in your dataSource.
> > 2. What you are trying achieve, is typically done using a "select for
> > update". For MySql, here's the documentation -
> > http://dev.mysql.com/doc/refman/5.0/en/innodb-locking-reads.html
> > 3. You don't need to create a separate "entity" for firing updates.
> > Writing a database procedure might be a good idea. In that case your
> query
> > will simply be <entity name="mainEntity" query="call MyProcedure();"
> .../>.
> > All the heavy lifting can be done by this query.
> >
> > Moreover, update queries, only return the number of rows affected and not
> a
> > resultSet. DIH expects one and hence the exception.
> >
> > Cheers
> > Avlesh
> >
> > On Tue, Aug 4, 2009 at 1:49 AM, Jay Hill <jayallenh...@gmail.com> wrote:
> >
> >> Is it possible for the DataImportHandler to update records in the table
> it
> >> is querying? For example, say I have a query like this in my entity:
> >>
> >> query="select field1, field2, from someTable where hasBeenIndexed=false"
> >>
> >> Is there a way I can mark each record processed by updating the
> >> hasBeenIndexed field? Here's a config I tried:
> >>
> >> <?xml version="1.0"?>
> >> <dataConfig>
> >> <dataSource
> >> type="JdbcDataSource"
> >> driver="com.mysql.jdbc.Driver"
> >> url="jdbc:mysql://localhost:3306/solrhacks"
> >> user="user"
> >> password="pass"/>
> >>
> >> <document name="testingDIHupdate">
> >> <entity name="mainEntity"
> >> pk="id"
> >> query="select id, name from tableToIndex where
> >> hasBeenIndexed=0">
> >> <field column="id" template="dihTestUpdate-${main.id}"/>
> >> <field column="name" name="name"/>
> >>
> >> <entity name="updateEntity"
> >> pk="id"
> >> query="update tableToIndex set hasBeenIndexed=1 where
> >> id=${mainEntity.id}">
> >> </entity>
> >> </entity>
> >> </document>
> >> </dataConfig>
> >>
> >> It does update the first record, but then an Exception is thrown:
> >> Aug 3, 2009 1:15:24 PM org.apache.solr.handler.dataimport.DocBuilder
> >> buildDocument
> >> SEVERE: Exception while processing: mainEntity document :
> >> SolrInputDocument[{id=id(1.0)={1}, name=name(1.0)={John Jones}}]
> >> org.apache.solr.handler.dataimport.DataImportHandlerException: Unable to
> >> execute query: update tableToIndex set hasBeenIndexed=1 where id=1
> >> Processing Document # 1
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.<init>(JdbcDataSource.java:250)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.JdbcDataSource.getData(JdbcDataSource.java:207)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.JdbcDataSource.getData(JdbcDataSource.java:40)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.SqlEntityProcessor.initQuery(SqlEntityProcessor.java:58)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.SqlEntityProcessor.nextRow(SqlEntityProcessor.java:71)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextRow(EntityProcessorWrapper.java:237)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:344)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:370)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:225)
> >> at
> >>
> org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:167)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:333)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:393)
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:372)
> >> Caused by: java.lang.NullPointerException
> >> at
> >>
> >>
> org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.<init>(JdbcDataSource.java:248)
> >> ... 12 more
> >>
> >>
> >> -Jay
> >>
> >
>
>
>
> --
> -----------------------------------------------------
> Noble Paul | Principal Engineer| AOL | http://aol.com
>
