Oh, I think I see the problem -- instead of numDocs in your for loop
(which I assume came from IndexReader.numDocs()) change that to maxDoc
(IndexReader.maxDoc()).
Mike
(Nagesh S) wrote:
Hi Michael,
Thanks for your response. Yes, I got that.
I guess, my question is, how do I access the newly added document ? In
other words, if the index initially had 20 docs of which 10 were
updated (that is, deleted and then added), how do I access the updated
ones ?
Initially, there was no check for delete - that is, I did not have
IndexReader.isDeleted(int). It had the for loop only which would fail
when obtaining a 'deleted' document with the following :
java.lang.IllegalArgumentException: attempt to access a deleted
document
at org.apache.lucene.index.SegmentReader.document(SegmentReader.java:
331)
at org.apache.lucene.index.MultiReader.document(MultiReader.java:108)
at org.apache.lucene.index.IndexReader.document(IndexReader.java:437)
etc.
Regards,
Nagesh
On 7/25/08, Michael McCandless <[EMAIL PROTECTED]> wrote:
When you call updateDocument, the old document is deleted but a
wholly new document is added. So the "else" clause in your loop
below
will report on the newly added documents (you won't miss any).
Mike
(Nagesh S) wrote:
Hi,
I think, the earlier mail didn't make it through.
I am writing a class to report on an index. This index has documents
updated using the IndexWriter.updateDocument(Term, Document) method.
That is, documents were deleted and added again. My aim is to see
what
documents (and their fields) are present in the index. Since the
document was updated (i.e. deleted and added), it is marked as
deleted
and hence not able to obtain a Document object for the updated
document.
How do I report on such documents ?
for (int i = 1; i < numDocs; i++) {
//ir is an IndexReader object
if (ir.isDeleted(i)) {
bw.write("Document " + i + " has been deleted.");
bw.newLine();
} else {
Document d = getDocument(ir, i);
List<Field> l = d.getFields();
int numFields = l.size();
bw.write("Document has " + numFields + " fields as
follows");
bw.newLine();
for (int j = 0; j < numFields; j++) {
String fieldName = l.get(j).name();
bw.write("\t Field : " + fieldName + " Value : "
+ d.getField(fieldName).stringValue());
bw.newLine();
}
}
}
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