>> 1. why ir.hashCode() returns different value every time I run
>> this
>>code?
Presumably because it is a different object instance in a different JVM?
IndexReader.hashCode() and IndexReader.equals() are not designed to
represent/summarise the physical contents of an index.
They are only used to determine the same instance of a Java object e.g. so that
cached items created from one IndexReader can recognise that the same
IndexReader instance is still in use in the JVM when the cache is queried with
a
given reader as context.
Cheers
Mark
----- Original Message ----
From: Sariny <sar...@gmail.com>
To: java-user <java-user@lucene.apache.org>
Sent: Mon, 29 November, 2010 3:50:34
Subject: How to Cache Filter Results between Servers
hello everyone
I have this test code:
IndexReader ir = getReader();
TermQuery q = new TermQuery(new
Term("sub_id",NumericUtils.intToPrefixCoded(57)));
Filter f = new QueryWrapperFilter(q);
try
{
DocIdSet s = f.getDocIdSet(ir);
DocIdSetIterator i = s.iterator();
while(i.nextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
System.out.println(i.docID());
}
System.out.println(f.hashCode());
System.out.println(s.hashCode());
System.out.println(ir.hashCode());
System.out.println(ir.getFieldCacheKey().hashCode());
}
catch (IOException e)
{
e.printStackTrace();
}
1. getReader() returns a MultiReader may consist of several
IndexReaders, in my test case ,only consist of one IndexReader
2. index files won't change
assuming that index files won't be updated, and my question is :
1. why ir.hashCode() returns different value every time I run this code?
2. if I copy the index file to another server ,and they provide search
service together,will f.getDocIdSet(ir) return the same DocIdSet? if true,how
to
cache filter results and share between the 2 servers? how to form a cache key
not influenced by question 1?
Thanks ~~
---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org
For additional commands, e-mail: java-user-h...@lucene.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org
For additional commands, e-mail: java-user-h...@lucene.apache.org
