问题
I'm have a solr schema with dynamic field of different types in. Eg in the schema.xml there are:
<dynamicField name="*_s" type="string" indexed="true" stored="true"/>
<dynamicField name="*_i" type="int" indexed="true" stored="true"/>
<dynamicField name="*_l" type="long" indexed="true" stored="true"/>
<dynamicField name="*_f" type="float" indexed="true" stored="true"/>
<dynamicField name="*_d" type="double" indexed="true" stored="true"/>
And I want to access these field using a SolrJ annotated POJO. I know I can have different Map references for each data type in the POJO like this:
...
@Field("*_s")
public Map<String, String> strings;
@Field("*_i")
public Map<String, Integer> integers;
...
But is it possible to have all dynamic fields stored in the same map? I was thinking something like:
...
@Field("*_s")
@Field("*_i")
public Map<String, Object> dynamicFields;
...
The only documentation I can find about SolrJ, POJOs and dynamic fields is an old feature request: https://issues.apache.org/jira/browse/SOLR-1129
回答1:
I worked out the matching of the 'pattern' value in the @Field annotation doesn't have to match what's in your schema.xml. So, I defined a map in my doc class:
@Field("*DF")
private Map<String, Object> dynamicFields;
and then in the schema.xml the dynamicFields have patterns postfixed by 'DF':
<dynamicField name="*_sDF" type="string" indexed="true" stored="true"/>
<dynamicField name="*_siDF" type="sint" indexed="true" stored="true"/>
<dynamicField name="*_tDF" type="date" indexed="true" stored="true"/>
Now all the dynamicField with different value types get stored and retrieved using solrServer.addBean(doc) and solrResponse.getBeans(Doc.class). This is with Solr 3.2.0 It wasn't working with 1.4..
来源：https://stackoverflow.com/questions/6238181/solrj-and-dynamic-fields