SOLR wildcard search not returning results - solr

Question

I have a schema definition as follows:
<fieldType name="textSuggest" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<filter class="solr.PatternReplaceFilterFactory" pattern="([,]+)" replacement=" " replace="all"/>
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
<analyzer type="query">
<filter class="solr.PatternReplaceFilterFactory" pattern="([,]+)" replacement=" " replace="all"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>
And some data in the format:
17,WALKINGTON,AVENUE,,MARGARET RIVER,WA
If I search for 17 walkington, it shows the above in the results. How can I make sure that if I search for 17 walk, the above shows up in the search results? I have tried appending * at the end of the search query, but can't get it to work. Any suggestions?

Answer 1

In order to get the partial word match you have to change or add the ngram filter.
Try using ngram filter.
Factory class: solr.NGramFilterFactory
for example the Arguments of it:
minGramSize: (integer, default 1) The minimum n-gram size, must be > 0.
maxGramSize: (integer, default 2) The maximum n-gram size, must be >= minGramSize.
Example you can a field type for your field:
<fieldType name="textSuggest" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<filter class="solr.PatternReplaceFilterFactory" pattern="([,]+)" replacement=" " replace="all"/>
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.NGramFilterFactory" minGramSize="1" maxGramSize="10"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
<analyzer type="query">
<filter class="solr.PatternReplaceFilterFactory" pattern="([,]+)" replacement=" " replace="all"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>
Note : The ngram causes big number of tokens and hence large index size if you have huge data set.