Thanks for your input You made a valid point, if we are using field type as text to get autocomplete it wont work because it goes through tokenizer. Hence looks like for my use case i need to have a field which uses ngram and copy. Here is what i did
i created a filed as same as the lucid blog says. <field name="autocomp" type="edgytext" indexed="true" stored="true" omitNorms="true" omitTermFreqAndPositions="true"/> with the following field configurtion <fieldType name="edgytext" class="solr.TextField" positionIncrementGap="100"> − <analyzer type="index"> <tokenizer class="solr.KeywordTokenizerFactory"/> <filter class="solr.LowerCaseFilterFactory"/> <filter class="solr.EdgeNGramFilterFactory" minGramSize="1" maxGramSize="25"/> </analyzer> − <analyzer type="query"> <tokenizer class="solr.KeywordTokenizerFactory"/> <filter class="solr.LowerCaseFilterFactory"/> </analyzer> </fieldType> Now when i query i get the correct phrases for example if search for autocomp:"how to" i get all the correct phrases like How to find a car How to find a mechanic How to choose the right insurance company etc... which is good. Now I have two question. 1) Is it necessary to give the query in quote. My gut feeling is yes, since if you dont give quote i get phrases beginning with How followed by some other words like How can etc... 2)if i search for word for example choose, it gives me nothing I was expecting to see a result considering there is a word "choose" in the phrase How to choose the right insurance company i might look more at documentation but do you have anything to advice. darniz Shalin Shekhar Mangar wrote: > > On Tue, Nov 24, 2009 at 10:12 AM, darniz <rnizamud...@edmunds.com> wrote: > >> >> hello all >> Let me first explain the task i am trying to do. >> i have article with title for example >> <doc> >> <str name="title">>Car Insurance for Teenage Drivers</str> >> </doc> >> − >> <doc> >> <str name="title">A Total Loss? </str> >> </doc> >> If a user begins to type car insu i want the autopop to show up with the >> entire phrase. >> There are two ways to implement this. >> First is to use the termcomponent and the other is to use a field with >> field >> type which uses solr.EdgeNGramFilterFactor filter. >> >> I started with using with Term component and i declared a term request >> handler and gave the following query >> >> http://localhost:8080/solr/terms?terms.fl=title&terms.prefix=car >> The issue is that its not giving the entire pharse, it gives me back >> results >> like car, caravan, carbon. Now i know using terms.prefix will only give >> me >> results where the sentence start with car. On top of this i also want if >> there is word like car somewhere in between the title that should also >> show >> up in autopop very much similar like google where a word is not >> necessarily >> start at the beginning but it could be present anywhere in the middle of >> the >> title. >> The question is does TermComponent is a good candidate or using a custom >> field lets the name is autoPopupText with field type configured with all >> filter and EdgeNGramFilterFactor defined and copying the title to the >> autoPopupText field and using it to power autopopup. >> >> The other thing is that using EdgeNGramFilterFactor is more from index >> point of view when you index document you need to know which fields you >> want >> to copy to autoPopupText field where as using Term component is more like >> you can define at query time what fields you want to use to fetch >> autocomplete from. >> >> Any idea whats the best and why the Term component is not giving me an >> entire phrase which i mentioned earlier. >> FYI >> my title field is of type text. >> > > > You are using a tokenized field type with TermsComponent therefore each > word > in your phrase gets indexed as a separate token. You should use a > non-tokenized type (such as a string type) with TermsComponent. However, > this will only let you search by prefix and not by words in between the > phrase. > > Your best bet here would be to use EdgeNGramFilterFactory. If your index > is > very large, you can consider doing a prefix search on shingles too. > > -- > Regards, > Shalin Shekhar Mangar. > > -- View this message in context: http://old.nabble.com/Implementing-phrase-autopop-up-tp26490419p26499912.html Sent from the Solr - User mailing list archive at Nabble.com.
