OK, here is my latest code to get the IndexReader from the solr core.
However, it still printed out the non-string fields as special chars. I do
use the schema file here. Please help.
public static void main(String[] args) throws Exception {
SolrConfig config = new SolrConfig("/Users/yuchen/Work/data/",
"solrconfig.xml", null);
IndexSchema schema = new IndexSchema(config, "schema.xml", null);
CoreContainer container = new CoreContainer(new
SolrResourceLoader(SolrResourceLoader.locateInstanceDir()));
CoreDescriptor dcore = new CoreDescriptor(container, "solr0",
config.getResourceLoader().getInstanceDir());
dcore.setConfigName(config.getResourceName());
dcore.setSchemaName(schema.getResourceName());
SolrCore core = new SolrCore("solr0", "/Users/yuchen/Work/data",
config, schema, dcore);
container.register("solr0", core, false);
IndexReader reader = core.getSearcher().get().getReader();
FieldCache cache = FieldCache.DEFAULT;
int total = reader.numDocs();
System.out.println("Total documents: " + total);
for (int i = 0; i < 1; i++) {
System.out.println("\n=============== Got Node: " + i + "
=================");
Document d = reader.document(i);
List<Field> fields = d.getFields();
for (Field f : fields) {
String name = f.name();
String val = f.stringValue();
System.out.println("get field / value: [" + name + "=" + val
+ "]");
}
}
reader.close();
}
On Sun, Jul 5, 2009 at 7:58 PM, Otis Gospodnetic <otis_gospodne...@yahoo.com
> wrote:
>
> Yuchen,
>
> schema.xml is a Solr configuration file that you can find in a conf
> directory under Solr home. Please go through the Solr tutorial on the site
> first.
>
> Otis
> --
> Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch
>
>
>
> ----- Original Message ----
> > From: Yuchen Wang <yuc...@trulia.com>
> > To: solr-user@lucene.apache.org
> > Sent: Sunday, July 5, 2009 1:19:12 PM
> > Subject: Re: Problem in parsing non-string dynamic field by using
> IndexReader
> >
> > Thanks for the reply. However, in the code I posted, where should I load
> the
> > schema.xml? I just created a Lucene IndexReader directly.
> >
> > On Sun, Jul 5, 2009 at 9:31 AM, Otis Gospodnetic
> > > wrote:
> >
> > >
> > > Yuchen,
> > >
> > > Make sure the fields you are trying to read are stored (stored="true"
> in
> > > schema.xml)
> > >
> > > Otis
> > > --
> > > Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch
> > >
> > >
> > >
> > > ----- Original Message ----
> > > > From: Yuchen Wang
> > > > To: solr-user@lucene.apache.org
> > > > Sent: Sunday, July 5, 2009 12:43:50 AM
> > > > Subject: Problem in parsing non-string dynamic field by using
> IndexReader
> > > >
> > > > I have a task to parse all documents in a solr index. I use Lucene
> > > > IndexReader to read the index and go through each field from all
> > > documents.
> > > > However, for float or int dynamic fields, the stringValue() call
> always
> > > > returns some special characters. I tried tokenStreamValue, byteValue,
> > > > readerValue, and they return null.
> > > > Following is my method to parse the solr index. My question is, how
> can I
> > > > get the values from non-string dynamic fields properly?
> > > >
> > > > public static void main(String[] args) throws Exception {
> > > > IndexReader reader =
> > > > IndexReader.open("/path/to/my/index/directory");
> > > >
> > > > int total = reader.numDocs();
> > > > System.out.println("Total documents: " + total);
> > > >
> > > > for (int i = 0; i < 1; i++) {
> > > > Document d = reader.document(i);
> > > >
> > > > Listfields = d.getFields();
> > > >
> > > > for (Field f : fields) {
> > > > String name = f.name();
> > > > String val = f.stringValue();
> > > >
> > > > System.out.println("get field / value: [" + name + "="
> +
> > > val
> > > > + "]"); }
> > > > }
> > > >
> > > > reader.close();
> > > > }
> > >
> > >
>
>
