1
|
/**
|
2
|
* '$RCSfile$'
|
3
|
* Purpose: A class that gets Accession Number, check for uniqueness
|
4
|
* and register it into db
|
5
|
* Copyright: 2000 Regents of the University of California and the
|
6
|
* National Center for Ecological Analysis and Synthesis
|
7
|
* Authors: Jivka Bojilova, Matt Jones
|
8
|
*
|
9
|
* '$Author: tao $'
|
10
|
* '$Date: 2013-04-19 17:47:14 -0700 (Fri, 19 Apr 2013) $'
|
11
|
* '$Revision: 7595 $'
|
12
|
*
|
13
|
* This program is free software; you can redistribute it and/or modify
|
14
|
* it under the terms of the GNU General Public License as published by
|
15
|
* the Free Software Foundation; either version 2 of the License, or
|
16
|
* (at your option) any later version.
|
17
|
*
|
18
|
* This program is distributed in the hope that it will be useful,
|
19
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
20
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
21
|
* GNU General Public License for more details.
|
22
|
*
|
23
|
* You should have received a copy of the GNU General Public License
|
24
|
* along with this program; if not, write to the Free Software
|
25
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
26
|
*/
|
27
|
package edu.ucsb.nceas.metacat.common.query;
|
28
|
|
29
|
import java.io.IOException;
|
30
|
import java.io.InputStream;
|
31
|
import java.util.Set;
|
32
|
|
33
|
import javax.xml.parsers.ParserConfigurationException;
|
34
|
|
35
|
import org.apache.solr.client.solrj.SolrServer;
|
36
|
import org.apache.solr.client.solrj.SolrServerException;
|
37
|
import org.apache.solr.client.solrj.embedded.EmbeddedSolrServer;
|
38
|
import org.apache.solr.client.solrj.impl.CommonsHttpSolrServer;
|
39
|
import org.apache.solr.common.params.SolrParams;
|
40
|
import org.apache.solr.core.CoreContainer;
|
41
|
import org.dataone.service.exceptions.NotFound;
|
42
|
import org.dataone.service.exceptions.NotImplemented;
|
43
|
import org.dataone.service.exceptions.UnsupportedType;
|
44
|
import org.dataone.service.types.v1.Subject;
|
45
|
import org.xml.sax.SAXException;
|
46
|
|
47
|
import edu.ucsb.nceas.metacat.common.SolrServerFactory;
|
48
|
|
49
|
/**
|
50
|
* A class to handle the solr query. It will call the SolrServerFactory to generate a SolrServer and
|
51
|
* determine the type - the embedded or http solr server.
|
52
|
* @author tao
|
53
|
*
|
54
|
*/
|
55
|
public class SolrQueryServiceController {
|
56
|
private static SolrQueryServiceController controller = null;
|
57
|
private boolean isEmbeddedSolrServer = false;
|
58
|
private EmbeddedSolrQueryService embeddedQueryService = null;
|
59
|
private HttpSolrQueryService httpQueryService = null;
|
60
|
|
61
|
/*
|
62
|
* Private consctructor
|
63
|
*/
|
64
|
private SolrQueryServiceController() throws UnsupportedType, ParserConfigurationException, IOException, SAXException, NotFound {
|
65
|
SolrServer solrServer = SolrServerFactory.createSolrServer();
|
66
|
if(solrServer instanceof EmbeddedSolrServer) {
|
67
|
isEmbeddedSolrServer = true;
|
68
|
EmbeddedSolrServer embeddedServer = (EmbeddedSolrServer) solrServer;
|
69
|
CoreContainer coreContainer = SolrServerFactory.getCoreContainer();
|
70
|
String collectionName = SolrServerFactory.getCollectionName();
|
71
|
embeddedQueryService = new EmbeddedSolrQueryService(embeddedServer, coreContainer, collectionName);
|
72
|
} else {
|
73
|
isEmbeddedSolrServer = false;
|
74
|
CommonsHttpSolrServer httpServer = (CommonsHttpSolrServer)solrServer;
|
75
|
httpQueryService = new HttpSolrQueryService(httpServer);
|
76
|
}
|
77
|
}
|
78
|
|
79
|
/**
|
80
|
* Get the controller
|
81
|
* @return
|
82
|
* @throws UnsupportedType
|
83
|
* @throws NotFound
|
84
|
* @throws ParserConfigurationException
|
85
|
* @throws IOException
|
86
|
* @throws SAXException
|
87
|
*/
|
88
|
public static SolrQueryServiceController getInstance() throws UnsupportedType, NotFound, ParserConfigurationException, IOException, SAXException {
|
89
|
if(controller == null) {
|
90
|
controller = new SolrQueryServiceController();
|
91
|
}
|
92
|
return controller;
|
93
|
}
|
94
|
|
95
|
|
96
|
|
97
|
/**
|
98
|
* Query the Solr server with specified query string or SolrParams and the user's identity.
|
99
|
* @param query query string. It is for the HttpSolrQueryService.
|
100
|
* @param params the SolrParam. It is for the EmbeddedSolrQueryService.
|
101
|
* @param subjects
|
102
|
* @return
|
103
|
* @throws NotImplemented
|
104
|
* @throws NotFound
|
105
|
* @throws IOException
|
106
|
* @throws SolrServerException
|
107
|
* @throws SAXException
|
108
|
* @throws ParserConfigurationException
|
109
|
* @throws UnsupportedType
|
110
|
*/
|
111
|
public InputStream query(String query, SolrParams params,Set<Subject>subjects) throws NotImplemented, NotFound, IOException, UnsupportedType, ParserConfigurationException, SAXException, SolrServerException {
|
112
|
if(isEmbeddedSolrServer) {
|
113
|
return embeddedQueryService.query(params, subjects);
|
114
|
} else {
|
115
|
return httpQueryService.query(query, subjects);
|
116
|
}
|
117
|
|
118
|
}
|
119
|
|
120
|
|
121
|
}
|