solrj solr 의 group 조회 실현:
1. 실 현 된 관련 클래스: SolrServer, SolrQuery, Query Response, GroupResponse, GroupCommand, Group, SolrDocumentList
(1) SolrServer 클래스 는 Solr 실례 와 의 연결 과 통신 을 제공 합 니 다.
SolrServer solr = new HttpSolrServer("http://localhost:8983/solr");(2) SolrQuery 류 는 조회 에 관 한 인 자 를 제공 합 니 다.
SolrQuery 는 ModifiableSolrParams 에 계승 되 고, ModifiableSolrParams 는 SolrParams 에 계승 된다.
// http://localhost:8983/solr/select?q= &group=true&group.field=age
//ModifiableSolrParams params = new ModifiableSolrParams();
SolrQuery params = new SolrQuery();
//the common parameters for all search
params.set("q", "*:*");
params.set("fq", "age:[20 TO 30]", "grade:[70 TO *]"); // filter query
params.set("fl", "*,score"); // field list
params.set("sort", "grade desc" ); //default score desc.
params.set("start", "0");
params.set("rows", "10");
params.set("timeAllowed", "30000"); //miliseconds
//params.set("wt", "xml"); // the response writer type
params.set("omitHeader", "true"); //default false
params.set("cache", "false"); //default true
//parameters only for grouping result
params.set("group", "true");
params.set("group.field", "id", "age");
params.set("group.query", " ", " ", "grade:[0 TO 59.9]", "grade:[60 TO *]", "age:[10 TO 19]", "age:[20 TO *]" );
//params.set("group.func", "grade GRATERTHAN 60"); // not found, don't use it!!!
params.set("group.sort", "grade desc");
params.set("group.format", "grouped"); //default:simple, other:grouped
params.set("group.main", "false"); // when /*group.format=simple and */ group.main=true, just return the documentList only!!!
params.set("group.ngroups", "true");
params.set("group.truncate", "true"); //default is false;
params.set("group.cache.percent", "50"); //default is 0;
params.set("group.offset", "0");
params.set("group.limit", "10");
//
//params.set("shards", "localhost:8983/solr1", "localhost:8983/solr2"); //shards=host:port/base_url[,host:port:/base_url,[....]]
//params.set("shards.qt", "/select"); // qt: query type// to indicate the request Handler to use
(3) Query Response 클래스 가 조회 한 결 과 를 제공 합 니 다.
QueryResponse response = null;
try {
response = solr.query(params);
//System.out.println(" ：" + response.getQTime());
} catch (SolrServerException e) {
System.err.println(e.getMessage());
e.printStackTrace();
} catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
} finally {
solr.shutdown();
}그룹 응답 가 져 오기:
GroupResponse groupResponse = response.getGroupResponse();(5) GroupResponse 를 통 해 GroupCommand 를 얻 고 GroupCommand 를 통 해 Group 을 얻 으 며 Group 은 SolrDocumentList 를 얻 을 수 있 습 니 다.
if (response != null) {
GroupResponse groupResponse = response.getGroupResponse();
if (groupResponse != null) {
List<GroupCommand> groupCommandList = groupResponse.getValues();
for (GroupCommand groupCommand : groupCommandList) {
System.out.println("GroupCommand Name : " + groupCommand.getName());
System.out.println("Num of Groups Found: " + groupCommand.getNGroups());
System.out.println("Num of documents Found: " + groupCommand.getMatches());
System.out.println("The groups are: ");
List<Group> groups = groupCommand.getValues();
for (Group group : groups) {
System.out.println("group value: " + group.getGroupValue());
SolrDocumentList solrDocumentList = group.getResult();
System.out.println("Num of Documents in this group: " + solrDocumentList.getNumFound());
System.out.println("start: " + solrDocumentList.getStart());
System.out.println("Max score: " + solrDocumentList.getMaxScore());
// solrDocumentList.get(index)
for (SolrDocument doc : solrDocumentList) {
System.out.println("the Fields of document:");
Collection<String> names = doc.getFieldNames();
for (String name : names) {
System.out.println(name + ": " + doc.getFieldValue(name));
}
System.out.println("
");
}
System.out.println("
");
}
System.out.println("
");
}
}solrj 그룹 조회 코드 구현:
package cn.wzb;
import java.util.Collection;
import java.util.List;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrServer;
import org.apache.solr.client.solrj.response.Group;
import org.apache.solr.client.solrj.response.GroupCommand;
import org.apache.solr.client.solrj.response.GroupResponse;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrDocumentList;
import org.apache.solr.common.params.ModifiableSolrParams;
public class TestGroup {
public static void main(String[] args) {
SolrServer solr = new HttpSolrServer("http://localhost:8983/solr");
// http://localhost:8983/solr/select?q= &group=true&group.field=age
//ModifiableSolrParams params = new ModifiableSolrParams();
SolrQuery params = new SolrQuery();
//the common parameters for all search
params.set("q", "*:*");
params.set("fq", "age:[20 TO 30]", "grade:[70 TO *]"); // filter query
params.set("fl", "*,score"); // field list
params.set("sort", "grade desc" ); //default score desc.
params.set("start", "0");
params.set("rows", "10");
params.set("timeAllowed", "30000"); //miliseconds
//params.set("wt", "xml"); // the response writer type
params.set("omitHeader", "true"); //default false
params.set("cache", "false"); //default true
//parameters only for grouping result
params.set("group", "true");
params.set("group.field", "id", "age");
params.set("group.query", " ", " ", "grade:[0 TO 59.9]", "grade:[60 TO *]", "age:[10 TO 19]", "age:[20 TO *]" );
//params.set("group.func", "grade GRATERTHAN 60"); // not found, don't use it!!!
params.set("group.sort", "grade desc");
params.set("group.format", "grouped"); //default:simple, other:grouped
params.set("group.main", "false"); // when /*group.format=simple and */ group.main=true, just return the documentList only!!!
params.set("group.ngroups", "true");
params.set("group.truncate", "true"); //default is false;
params.set("group.cache.percent", "50"); //default is 0;
params.set("group.offset", "0");
params.set("group.limit", "10");
//
//params.set("shards", "localhost:8983/solr1", "localhost:8983/solr2"); //shards=host:port/base_url[,host:port:/base_url,[....]]
//params.set("shards.qt", "/select"); // qt: query type// to indicate the request Handler to use
QueryResponse response = null;
try {
response = solr.query(params);
//System.out.println(" ：" + response.getQTime());
} catch (SolrServerException e) {
System.err.println(e.getMessage());
e.printStackTrace();
} catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
} finally {
solr.shutdown();
}
if (response != null) {
GroupResponse groupResponse = response.getGroupResponse();
if (groupResponse != null) {
List<GroupCommand> groupCommandList = groupResponse.getValues();
for (GroupCommand groupCommand : groupCommandList) {
System.out.println("GroupCommand Name : " + groupCommand.getName());
System.out.println("Num of Groups Found: " + groupCommand.getNGroups());
System.out.println("Num of documents Found: " + groupCommand.getMatches());
System.out.println("The groups are: ");
List<Group> groups = groupCommand.getValues();
for (Group group : groups) {
System.out.println("group value: " + group.getGroupValue());
SolrDocumentList solrDocumentList = group.getResult();
System.out.println("Num of Documents in this group: " + solrDocumentList.getNumFound());
System.out.println("start: " + solrDocumentList.getStart());
System.out.println("Max score: " + solrDocumentList.getMaxScore());
// solrDocumentList.get(index)
for (SolrDocument doc : solrDocumentList) {
System.out.println("the Fields of document:");
Collection<String> names = doc.getFieldNames();
for (String name : names) {
System.out.println(name + ": " + doc.getFieldValue(name));
}
System.out.println("
");
}
System.out.println("
");
}
System.out.println("
");
}
}
//System.out.println("response = " + response);
//System.out.println(response.getStatus());
System.out.println(" ：" + response.getQTime());
}
solr.shutdown();
}
}
테스트 결과:
2012-8-17 14:04:52 org.apache.solr.client.solrj.impl.HttpClientUtil createClient
: Creating new http client, config:maxConnections=128&maxConnectionsPerHost=32&followRedirects=false
GroupCommand Name : id
Num of Groups Found: 3
Num of documents Found: 3
The groups are:
group value: no3
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no3
number: 3
name:
grade: 94.8
age: 25
introduction: bazaaa，bbbfoo ， ，
text_auto: bazaaa，bbbfoo ， ，
text: bazaaa，bbbfoo ， ，
title: bazaaa，bbbfoo ， ，
title_smart: bazaaa，bbbfoo ， ，
entranceTime: Wed Jan 05 00:05:00 CST 2005
deposit: 3000.0009
score: 1.0
group value: no4
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no4
number: 4
name:
grade: 80.8
age: 30
introduction: bbbfoo ， ， ，aaabar
text_auto: bbbfoo ， ， ，aaabar
text: bbbfoo ， ， ，aaabar
title: bbbfoo ， ， ，aaabar
title_smart: bbbfoo ， ， ，aaabar
entranceTime: Tue Jan 10 00:09:00 CST 2006
deposit: 90000.000788
score: 1.0
group value: no5
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no5
number: 4
name:
grade: 70.8
age: 25
introduction: bbbbar ， ， ， ，aaafoo
text_auto: bbbbar ， ， ， ，aaafoo
text: bbbbar ， ， ， ，aaafoo
title: bbbbar ， ， ， ，aaafoo
title_smart: bbbbar ， ， ， ，aaafoo
entranceTime: Wed Jan 10 00:09:00 CST 2007
deposit: 2343900.000788
score: 1.0
GroupCommand Name : age
Num of Groups Found: 2
Num of documents Found: 3
The groups are:
group value: 25
Num of Documents in this group: 2
start: 0
Max score: 1.0
the Fields of document:
id: no3
number: 3
name:
grade: 94.8
age: 25
introduction: bazaaa，bbbfoo ， ，
text_auto: bazaaa，bbbfoo ， ，
text: bazaaa，bbbfoo ， ，
title: bazaaa，bbbfoo ， ，
title_smart: bazaaa，bbbfoo ， ，
entranceTime: Wed Jan 05 00:05:00 CST 2005
deposit: 3000.0009
score: 1.0
the Fields of document:
id: no5
number: 4
name:
grade: 70.8
age: 25
introduction: bbbbar ， ， ， ，aaafoo
text_auto: bbbbar ， ， ， ，aaafoo
text: bbbbar ， ， ， ，aaafoo
title: bbbbar ， ， ， ，aaafoo
title_smart: bbbbar ， ， ， ，aaafoo
entranceTime: Wed Jan 10 00:09:00 CST 2007
deposit: 2343900.000788
score: 1.0
group value: 30
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no4
number: 4
name:
grade: 80.8
age: 30
introduction: bbbfoo ， ， ，aaabar
text_auto: bbbfoo ， ， ，aaabar
text: bbbfoo ， ， ，aaabar
title: bbbfoo ， ， ，aaabar
title_smart: bbbfoo ， ， ，aaabar
entranceTime: Tue Jan 10 00:09:00 CST 2006
deposit: 90000.000788
score: 1.0
GroupCommand Name : sub(grade, 60)
Num of Groups Found: 3
Num of documents Found: 3
The groups are:
group value: 34.800003
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no3
number: 3
name:
grade: 94.8
age: 25
introduction: bazaaa，bbbfoo ， ，
text_auto: bazaaa，bbbfoo ， ，
text: bazaaa，bbbfoo ， ，
title: bazaaa，bbbfoo ， ，
title_smart: bazaaa，bbbfoo ， ，
entranceTime: Wed Jan 05 00:05:00 CST 2005
deposit: 3000.0009
score: 1.0
group value: 20.800003
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no4
number: 4
name:
grade: 80.8
age: 30
introduction: bbbfoo ， ， ，aaabar
text_auto: bbbfoo ， ， ，aaabar
text: bbbfoo ， ， ，aaabar
title: bbbfoo ， ， ，aaabar
title_smart: bbbfoo ， ， ，aaabar
entranceTime: Tue Jan 10 00:09:00 CST 2006
deposit: 90000.000788
score: 1.0
group value: 10.800003
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no5
number: 4
name:
grade: 70.8
age: 25
introduction: bbbbar ， ， ， ，aaafoo
text_auto: bbbbar ， ， ， ，aaafoo
text: bbbbar ， ， ， ，aaafoo
title: bbbbar ， ， ， ，aaafoo
title_smart: bbbbar ， ， ， ，aaafoo
entranceTime: Wed Jan 10 00:09:00 CST 2007
deposit: 2343900.000788
score: 1.0
GroupCommand Name :
Num of Groups Found: null
Num of documents Found: 3
The groups are:
group value:
Num of Documents in this group: 1
start: 0
Max score: 1.0
the Fields of document:
id: no3
number: 3
name:
grade: 94.8
age: 25
introduction: bazaaa，bbbfoo ， ，
text_auto: bazaaa，bbbfoo ， ，
text: bazaaa，bbbfoo ， ，
title: bazaaa，bbbfoo ， ，
title_smart: bazaaa，bbbfoo ， ，
entranceTime: Wed Jan 05 00:05:00 CST 2005
deposit: 3000.0009
score: 1.0
GroupCommand Name :
Num of Groups Found: null
Num of documents Found: 3
The groups are:
group value:
Num of Documents in this group: 2
start: 0
Max score: 1.0
the Fields of document:
id: no3
number: 3
name:
grade: 94.8
age: 25
introduction: bazaaa，bbbfoo ， ，
text_auto: bazaaa，bbbfoo ， ，
text: bazaaa，bbbfoo ， ，
title: bazaaa，bbbfoo ， ，
title_smart: bazaaa，bbbfoo ， ，
entranceTime: Wed Jan 05 00:05:00 CST 2005
deposit: 3000.0009
score: 1.0
the Fields of document:
id: no5
number: 4
name:
grade: 70.8
age: 25
introduction: bbbbar ， ， ， ，aaafoo
text_auto: bbbbar ， ， ， ，aaafoo
text: bbbbar ， ， ， ，aaafoo
title: bbbbar ， ， ， ，aaafoo
title_smart: bbbbar ， ， ， ，aaafoo
entranceTime: Wed Jan 10 00:09:00 CST 2007
deposit: 2343900.000788
score: 1.0
GroupCommand Name : grade:[0 TO 59.9]
Num of Groups Found: null
Num of documents Found: 3
The groups are:
group value: grade:[0 TO 59.9]
Num of Documents in this group: 0
start: 0
Max score: NaN
GroupCommand Name : grade:[60 TO *]
Num of Groups Found: null
Num of documents Found: 3
The groups are:
group value: grade:[60 TO *]
Num of Documents in this group: 3
start: 0
Max score: 1.0
the Fields of document:
id: no3
number: 3
name:
grade: 94.8
age: 25
introduction: bazaaa，bbbfoo ， ，
text_auto: bazaaa，bbbfoo ， ，
text: bazaaa，bbbfoo ， ，
title: bazaaa，bbbfoo ， ，
title_smart: bazaaa，bbbfoo ， ，
entranceTime: Wed Jan 05 00:05:00 CST 2005
deposit: 3000.0009
score: 1.0
the Fields of document:
id: no4
number: 4
name:
grade: 80.8
age: 30
introduction: bbbfoo ， ， ，aaabar
text_auto: bbbfoo ， ， ，aaabar
text: bbbfoo ， ， ，aaabar
title: bbbfoo ， ， ，aaabar
title_smart: bbbfoo ， ， ，aaabar
entranceTime: Tue Jan 10 00:09:00 CST 2006
deposit: 90000.000788
score: 1.0
the Fields of document:
id: no5
number: 4
name:
grade: 70.8
age: 25
introduction: bbbbar ， ， ， ，aaafoo
text_auto: bbbbar ， ， ， ，aaafoo
text: bbbbar ， ， ， ，aaafoo
title: bbbbar ， ， ， ，aaafoo
title_smart: bbbbar ， ， ， ，aaafoo
entranceTime: Wed Jan 10 00:09:00 CST 2007
deposit: 2343900.000788
score: 1.0
GroupCommand Name : age:[10 TO 19]
Num of Groups Found: null
Num of documents Found: 3
The groups are:
group value: age:[10 TO 19]
Num of Documents in this group: 0
start: 0
Max score: NaN
GroupCommand Name : age:[20 TO *]
Num of Groups Found: null
Num of documents Found: 3
The groups are:
group value: age:[20 TO *]
Num of Documents in this group: 3
start: 0
Max score: 1.0
the Fields of document:
id: no3
number: 3
name:
grade: 94.8
age: 25
introduction: bazaaa，bbbfoo ， ，
text_auto: bazaaa，bbbfoo ， ，
text: bazaaa，bbbfoo ， ，
title: bazaaa，bbbfoo ， ，
title_smart: bazaaa，bbbfoo ， ，
entranceTime: Wed Jan 05 00:05:00 CST 2005
deposit: 3000.0009
score: 1.0
the Fields of document:
id: no4
number: 4
name:
grade: 80.8
age: 30
introduction: bbbfoo ， ， ，aaabar
text_auto: bbbfoo ， ， ，aaabar
text: bbbfoo ， ， ，aaabar
title: bbbfoo ， ， ，aaabar
title_smart: bbbfoo ， ， ，aaabar
entranceTime: Tue Jan 10 00:09:00 CST 2006
deposit: 90000.000788
score: 1.0
the Fields of document:
id: no5
number: 4
name:
grade: 70.8
age: 25
introduction: bbbbar ， ， ， ，aaafoo
text_auto: bbbbar ， ， ， ，aaafoo
text: bbbbar ， ， ， ，aaafoo
title: bbbbar ， ， ， ，aaafoo
title_smart: bbbbar ， ， ， ，aaafoo
entranceTime: Wed Jan 10 00:09:00 CST 2007
deposit: 2343900.000788
score: 1.0
：0
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