hi all
I need to return certain fields of all matched documents quickly.
I am now using Document.get(field), but the performance is not well
enough. Originally I use HashMap to store these fields. it's much
faster but I have to maintain two storage systems. Now I am
reconstructing this
I think you are looking for FieldCache.
I'm not sure the current status in 4x, but it worked in 2.9/3.x.
Basically it's an array, so access is quite straight forward, and the
best part IndexReader manage those for you, so on reopen only new
segments are read.
Small catch is that FiledCaches are
thanks, l will try it
在 2012-6-20 晚上8:59，Danil ŢORIN torin...@gmail.com写道：
I think you are looking for FieldCache.
I'm not sure the current status in 4x, but it worked in 2.9/3.x.
Basically it's an array, so access is quite straight forward, and the
best part IndexReader manage those for
but as l can remember, in 2.9.x FieldCache can only apply to indexed but
not analyzed fields.
在 2012-6-20 晚上8:59，Danil ŢORIN torin...@gmail.com写道：
I think you are looking for FieldCache.
I'm not sure the current status in 4x, but it worked in 2.9/3.x.
Basically it's an array, so access is
Right, the field must have a single token for FieldCache.
But if you are on 4.x you can use DocTermOrds
(FieldCache.getDocTermOrds) which allows for multiple tokens per
field.
Mike McCandless
http://blog.mikemccandless.com
On Wed, Jun 20, 2012 at 9:47 AM, Li Li fancye...@gmail.com wrote:
but
