Mailing List Archive: Null pointer error when searching with DateFilter

Null pointer error when searching with DateFilter

Oct 11, 2001, 7:57 AM

Post #1 of 4 (1187 views)

Hello all,

I am trying to search using a DateFilter so I get a resultset that lies
between two dates. Without the DateFilter the search works perfectly, but
when I use the DateFilter I get the following error

java.lang.NullPointerException
at
org.apache.lucene.index.SegmentTermEnum.clone(SegmentTermEnum.java:91)
at
org.apache.lucene.index.TermInfosReader.terms(TermInfosReader.java:218)
at
org.apache.lucene.index.SegmentReader.terms(SegmentReader.java:183)
at
org.apache.lucene.index.SegmentsTermEnum.<init>(SegmentsReader.java:182)
at
org.apache.lucene.index.SegmentsReader.terms(SegmentsReader.java:144)
at org.apache.lucene.search.DateFilter.bits(DateFilter.java:131)
at
org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:109)
at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:91)
at org.apache.lucene.search.Hits.<init>(Hits.java:81)
at org.apache.lucene.search.Searcher.search(Searcher.java:75)

and I was just wondering if anyone who have have had or overcome similar
problems, could give me the benefit of their experiences?

When I create the Documents in the index I use the following code to create
the date-field

doc.add(Field.Keyword("timestamp", DateField.dateToString(date)));

where date is an object of type Date,

and the DateFilter is created like this:

DateFilter dateFilter = DateFilter.After("timestamp",
from.getTime());

where from is an object of type Calendar,

and I make the search by calling search(Query, Filter) on an IndexSearcher
object:

return _indexSearcher.search(query, searchFilter);

where query is an object of type Query, and searchFilter is of type
DateFilter.

Venlig hilsen

Anders Nielsen
Adm. direktør

_____________

Visator ApS
Kroghsgade 1
2100 Kbh. Ø
Tlf: 35 55 47 02
Mobil: 26 71 36 63
_____________

RE: Null pointer error when searching with DateFilter [ In reply to ]

scott.ganyo at eTapestry

Oct 11, 2001, 8:06 AM

Post #2 of 4 (1184 views)

Permalink

Yes, this is the exact error that I've addressed in the patch I'm about to
check in for SegmentTermEnum.

Scott

> -----Original Message-----
> From: Anders Nielsen [mailto:anders@visator.dk]
> Sent: Thursday, October 11, 2001 9:57 AM
> To: lucene-dev@jakarta.apache.org
> Subject: Null pointer error when searching with DateFilter
>
>
> Hello all,
>
> I am trying to search using a DateFilter so I get a resultset
> that lies
> between two dates. Without the DateFilter the search works
> perfectly, but
> when I use the DateFilter I get the following error
>
> java.lang.NullPointerException
> at
> org.apache.lucene.index.SegmentTermEnum.clone(SegmentTermEnum.java:91)
> at
> org.apache.lucene.index.TermInfosReader.terms(TermInfosReader.
> java:218)
> at
> org.apache.lucene.index.SegmentReader.terms(SegmentReader.java:183)
> at
> org.apache.lucene.index.SegmentsTermEnum.<init>(SegmentsReader
> .java:182)
> at
> org.apache.lucene.index.SegmentsReader.terms(SegmentsReader.java:144)
> at
> org.apache.lucene.search.DateFilter.bits(DateFilter.java:131)
> at
> org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:109)
> at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:91)
> at org.apache.lucene.search.Hits.<init>(Hits.java:81)
> at org.apache.lucene.search.Searcher.search(Searcher.java:75)
>
> and I was just wondering if anyone who have have had or
> overcome similar
> problems, could give me the benefit of their experiences?
>
>
> When I create the Documents in the index I use the following
> code to create
> the date-field
>
> doc.add(Field.Keyword("timestamp",
> DateField.dateToString(date)));
>
> where date is an object of type Date,
>
>
> and the DateFilter is created like this:
>
> DateFilter dateFilter = DateFilter.After("timestamp",
> from.getTime());
>
> where from is an object of type Calendar,
>
>
> and I make the search by calling search(Query, Filter) on an
> IndexSearcher
> object:
>
> return _indexSearcher.search(query, searchFilter);
>
> where query is an object of type Query, and searchFilter is of type
> DateFilter.
>
>
>
> Venlig hilsen
>
> Anders Nielsen
> Adm. direktør
>
> _____________
>
> Visator ApS
> Kroghsgade 1
> 2100 Kbh. Ø
> Tlf: 35 55 47 02
> Mobil: 26 71 36 63
> _____________
>
>
>

RE: Null pointer error when searching with DateFilter [ In reply to ]

anders at visator

Oct 11, 2001, 8:11 AM

Post #3 of 4 (1168 views)

Permalink

Should I ever find a suitable woman (blind or drunk), our first offspring
shall proudly bear the name Scott..

In other words: thanks

regards,
Anders Nielsen

-----Original Message-----
From: Scott Ganyo [mailto:scott.ganyo@eTapestry.com]
Sent: 11. oktober 2001 17:07
To: 'lucene-dev@jakarta.apache.org'
Subject: RE: Null pointer error when searching with DateFilter

Yes, this is the exact error that I've addressed in the patch I'm about to
check in for SegmentTermEnum.

Scott

> -----Original Message-----
> From: Anders Nielsen [mailto:anders@visator.dk]
> Sent: Thursday, October 11, 2001 9:57 AM
> To: lucene-dev@jakarta.apache.org
> Subject: Null pointer error when searching with DateFilter
>
>
> Hello all,
>
> I am trying to search using a DateFilter so I get a resultset
> that lies
> between two dates. Without the DateFilter the search works
> perfectly, but
> when I use the DateFilter I get the following error
>
> java.lang.NullPointerException
> at
> org.apache.lucene.index.SegmentTermEnum.clone(SegmentTermEnum.java:91)
> at
> org.apache.lucene.index.TermInfosReader.terms(TermInfosReader.
> java:218)
> at
> org.apache.lucene.index.SegmentReader.terms(SegmentReader.java:183)
> at
> org.apache.lucene.index.SegmentsTermEnum.<init>(SegmentsReader
> .java:182)
> at
> org.apache.lucene.index.SegmentsReader.terms(SegmentsReader.java:144)
> at
> org.apache.lucene.search.DateFilter.bits(DateFilter.java:131)
> at
> org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:109)
> at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:91)
> at org.apache.lucene.search.Hits.<init>(Hits.java:81)
> at org.apache.lucene.search.Searcher.search(Searcher.java:75)
>
> and I was just wondering if anyone who have have had or
> overcome similar
> problems, could give me the benefit of their experiences?
>
>
> When I create the Documents in the index I use the following
> code to create
> the date-field
>
> doc.add(Field.Keyword("timestamp",
> DateField.dateToString(date)));
>
> where date is an object of type Date,
>
>
> and the DateFilter is created like this:
>
> DateFilter dateFilter = DateFilter.After("timestamp",
> from.getTime());
>
> where from is an object of type Calendar,
>
>
> and I make the search by calling search(Query, Filter) on an
> IndexSearcher
> object:
>
> return _indexSearcher.search(query, searchFilter);
>
> where query is an object of type Query, and searchFilter is of type
> DateFilter.
>
>
>
> Venlig hilsen
>
> Anders Nielsen
> Adm. direktør
>
> _____________
>
> Visator ApS
> Kroghsgade 1
> 2100 Kbh. Ø
> Tlf: 35 55 47 02
> Mobil: 26 71 36 63
> _____________
>
>
>

RE: Null pointer error when searching with DateFilter [ In reply to ]

scott.ganyo at eTapestry

Oct 11, 2001, 8:37 AM

Post #4 of 4 (1176 views)

Permalink

Kind words indeed! Thanks. :)

I've checked in now, so please check it out and verify the fix for yourself.

(By the way, another way to address a date range selection is with the
RangeQuery I added a while back. You can include in your main query and in
many circumstances it may be faster than using a Filter.)

Scott

> -----Original Message-----
> From: Anders Nielsen [mailto:anders@visator.dk]
> Sent: Thursday, October 11, 2001 10:11 AM
> To: lucene-dev@jakarta.apache.org
> Subject: RE: Null pointer error when searching with DateFilter
>
>
> Should I ever find a suitable woman (blind or drunk), our
> first offspring
> shall proudly bear the name Scott..
>
> In other words: thanks
>
> regards,
> Anders Nielsen
>
> -----Original Message-----
> From: Scott Ganyo [mailto:scott.ganyo@eTapestry.com]
> Sent: 11. oktober 2001 17:07
> To: 'lucene-dev@jakarta.apache.org'
> Subject: RE: Null pointer error when searching with DateFilter
>
>
> Yes, this is the exact error that I've addressed in the patch
> I'm about to
> check in for SegmentTermEnum.
>
> Scott
>
> > -----Original Message-----
> > From: Anders Nielsen [mailto:anders@visator.dk]
> > Sent: Thursday, October 11, 2001 9:57 AM
> > To: lucene-dev@jakarta.apache.org
> > Subject: Null pointer error when searching with DateFilter
> >
> >
> > Hello all,
> >
> > I am trying to search using a DateFilter so I get a resultset
> > that lies
> > between two dates. Without the DateFilter the search works
> > perfectly, but
> > when I use the DateFilter I get the following error
> >
> > java.lang.NullPointerException
> > at
> >
> org.apache.lucene.index.SegmentTermEnum.clone(SegmentTermEnum.java:91)
> > at
> > org.apache.lucene.index.TermInfosReader.terms(TermInfosReader.
> > java:218)
> > at
> > org.apache.lucene.index.SegmentReader.terms(SegmentReader.java:183)
> > at
> > org.apache.lucene.index.SegmentsTermEnum.<init>(SegmentsReader
> > .java:182)
> > at
> >
> org.apache.lucene.index.SegmentsReader.terms(SegmentsReader.java:144)
> > at
> > org.apache.lucene.search.DateFilter.bits(DateFilter.java:131)
> > at
> >
> org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:109)
> > at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:91)
> > at org.apache.lucene.search.Hits.<init>(Hits.java:81)
> > at
> org.apache.lucene.search.Searcher.search(Searcher.java:75)
> >
> > and I was just wondering if anyone who have have had or
> > overcome similar
> > problems, could give me the benefit of their experiences?
> >
> >
> > When I create the Documents in the index I use the following
> > code to create
> > the date-field
> >
> > doc.add(Field.Keyword("timestamp",
> > DateField.dateToString(date)));
> >
> > where date is an object of type Date,
> >
> >
> > and the DateFilter is created like this:
> >
> > DateFilter dateFilter = DateFilter.After("timestamp",
> > from.getTime());
> >
> > where from is an object of type Calendar,
> >
> >
> > and I make the search by calling search(Query, Filter) on an
> > IndexSearcher
> > object:
> >
> > return _indexSearcher.search(query, searchFilter);
> >
> > where query is an object of type Query, and searchFilter is of type
> > DateFilter.
> >
> >
> >
> > Venlig hilsen
> >
> > Anders Nielsen
> > Adm. direktør
> >
> > _____________
> >
> > Visator ApS
> > Kroghsgade 1
> > 2100 Kbh. Ø
> > Tlf: 35 55 47 02
> > Mobil: 26 71 36 63
> > _____________
> >
> >
> >
>