1 |
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2 | // Adapted from
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3 | // http://wiki.constellio.com/index.php/Solrj_example
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4 |
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5 |
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6 | import java.net.MalformedURLException;
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7 | import java.util.Iterator;
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8 | import java.util.List;
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9 | import java.util.Map;
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10 | import java.util.Map.Entry;
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11 |
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12 | import org.apache.solr.client.solrj.SolrQuery;
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13 | import org.apache.solr.client.solrj.SolrServer;
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14 | import org.apache.solr.client.solrj.SolrServerException;
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15 | import org.apache.solr.client.solrj.response.FacetField;
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16 | import org.apache.solr.client.solrj.response.FacetField.Count;
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17 | import org.apache.solr.client.solrj.response.QueryResponse;
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18 | import org.apache.solr.common.SolrDocument;
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19 | import org.apache.solr.common.SolrDocumentList;
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20 | import org.apache.solr.common.params.ModifiableSolrParams;
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21 | import org.apache.solr.common.params.SolrParams;
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22 | import org.apache.solr.common.util.NamedList;
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23 | import org.apache.solr.servlet.SolrRequestParsers;
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24 |
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25 | import java.io.File;
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26 | import org.apache.solr.client.solrj.embedded.EmbeddedSolrServer;
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27 | import org.apache.solr.core.CoreContainer;
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28 | import javax.xml.parsers.ParserConfigurationException;
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29 | import java.io.IOException;
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30 | import org.xml.sax.SAXException;
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31 |
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32 | import java.util.Collection;
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33 |
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34 | /**
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35 | * A simple main to illustrate how to execute a request using SolrJ
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36 | *
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37 | */
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38 | public class QueryTest
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39 | {
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40 | protected static String solr_home_str = "C:\\cygwin\\home\\davidb\\research\\code\\greenstone3-svn-full\\web\\ext\\solr";
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41 |
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42 | private static final String myCore = "localsite-solr-jdbm-demo-didx";
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43 |
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44 | private static final String facet_field = "DS";
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45 |
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46 | // q=...
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47 | //private static final String query = "TX:snails";
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48 | private static final String query = "TX:farming";
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49 |
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50 | private static final int start = 0;
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51 | private static final int nbDocuments = 11;
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52 |
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53 | public static void main(String[] args) throws IOException,
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54 | ParserConfigurationException,
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55 | SAXException,
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56 | SolrServerException {
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57 |
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58 | File solr_home = new File(solr_home_str);
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59 | File solr_xml = new File( solr_home,"solr.xml" );
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60 |
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61 | try {
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62 | CoreContainer cores = new CoreContainer(solr_home_str,solr_xml);
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63 |
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64 | Collection<String> core_names = cores.getCoreNames();
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65 |
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66 | for (String name : core_names) {
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67 | System.err.println("(**** core name: " + name);
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68 | }
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69 |
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70 | EmbeddedSolrServer server = new EmbeddedSolrServer(cores,myCore);
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71 |
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72 | // Do the same query three times using three different method
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73 | System.out.println("====== 1st way to execute a query ======");
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74 | print(doFirstQuery(server));
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75 | System.out.println("====== 2nd way to execute a query ======");
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76 | print(doSecondQuery(server));
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77 | System.out.println("====== 3rd way to execute query ======");
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78 | print(doThirdQuery(server));
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79 |
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80 | /*
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81 | System.out.println("======= Using SpellChecker ======");
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82 | print(spellCheck(server, "farmng snals"));
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83 |
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84 | */
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85 |
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86 | cores.shutdown();
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87 | }
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88 | catch (Exception e) {
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89 | e.printStackTrace();
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90 | }
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91 |
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92 | }
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93 |
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94 | /**
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95 | * Do the query using a StringBuffer
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96 | */
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97 | public static QueryResponse doFirstQuery(SolrServer server)
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98 | throws SolrServerException {
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99 | StringBuffer request = new StringBuffer();
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100 | //request.append("collectionName=" + myCore);
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101 | request.append("facet=" + true);
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102 | request.append("&facet.field=" + facet_field);
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103 | request.append("&q=" + query);
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104 | request.append("&start=" + start);
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105 | request.append("&rows=" + nbDocuments);
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106 | SolrParams solrParams = SolrRequestParsers.parseQueryString(request
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107 | .toString());
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108 |
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109 | System.err.println("*** URL request: " + solrParams);
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110 |
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111 | return server.query(solrParams);
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112 | }
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113 |
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114 | /**
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115 | * Do the query using a ModifiableSolrParams
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116 | */
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117 | public static QueryResponse doSecondQuery(SolrServer server)
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118 | throws SolrServerException {
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119 | ModifiableSolrParams solrParams = new ModifiableSolrParams();
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120 | //solrParams.set("collectionName", myCore);
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121 | solrParams.set("facet", "true");
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122 | solrParams.set("facet.field", facet_field);
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123 | solrParams.set("q", query);
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124 | solrParams.set("start", start);
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125 | solrParams.set("rows", nbDocuments);
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126 | return server.query(solrParams);
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127 | }
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128 |
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129 | /**
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130 | * Do the query using a SolrQuery
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131 | */
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132 | public static QueryResponse doThirdQuery(SolrServer server)
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133 | throws SolrServerException {
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134 | SolrQuery solrQuery = new SolrQuery();
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135 | solrQuery.setQuery(query);
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136 | //solrQuery.set("collectionName", myCore);
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137 | solrQuery.set("facet", "true");
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138 | solrQuery.set("facet.field", facet_field);
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139 | solrQuery.setStart(start);
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140 | solrQuery.setRows(nbDocuments);
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141 | return server.query(solrQuery);
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142 | }
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143 |
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144 | /**
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145 | * Do the query using a SolrQuery
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146 | */
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147 | public static QueryResponse spellCheck(SolrServer server, String badQuery)
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148 | throws SolrServerException {
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149 | SolrQuery solrQuery = new SolrQuery();
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150 | solrQuery.setQuery(badQuery);
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151 | solrQuery.set("collectionName", myCore);
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152 |
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153 | // qt=spellcheck || qt=spellchecker
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154 | solrQuery.setQueryType("spellcheck");
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155 | return server.query(solrQuery);
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156 | }
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157 |
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158 | /**
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159 | * Print documents and facets
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160 | *
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161 | * @param response
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162 | */
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163 | @SuppressWarnings("unchecked")
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164 | public static void print(QueryResponse response) {
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165 | SolrDocumentList docs = response.getResults();
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166 | if (docs != null) {
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167 | System.out.println(docs.getNumFound() + " documents found, "
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168 | + docs.size() + " returned : ");
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169 | for (int i = 0; i < docs.size(); i++) {
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170 | SolrDocument doc = docs.get(i);
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171 | System.out.println("\t" + doc.toString());
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172 | }
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173 | }
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174 |
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175 | List<FacetField> fieldFacets = response.getFacetFields();
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176 | if (fieldFacets != null && !fieldFacets.isEmpty()) {
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177 | System.out.println("\nField Facets : ");
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178 | for (FacetField fieldFacet : fieldFacets) {
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179 | System.out.print("\t" + fieldFacet.getName() + " :\t");
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180 | if (fieldFacet.getValueCount() > 0) {
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181 | for (Count count : fieldFacet.getValues()) {
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182 | System.out.print(count.getName() + "["
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183 | + count.getCount() + "]\t");
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184 | }
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185 | }
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186 | System.out.println("");
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187 | }
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188 | }
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189 |
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190 | Map<String, Integer> queryFacets = response.getFacetQuery();
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191 | if (queryFacets != null && !queryFacets.isEmpty()) {
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192 | System.out.println("\nQuery facets : ");
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193 | for (String queryFacet : queryFacets.keySet()) {
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194 | System.out.println("\t" + queryFacet + "\t["
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195 | + queryFacets.get(queryFacet) + "]");
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196 | }
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197 | System.out.println("");
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198 | }
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199 |
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200 | NamedList<NamedList<Object>> spellCheckResponse = (NamedList<NamedList<Object>>) response
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201 | .getResponse().get("spellcheck");
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202 |
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203 | if (spellCheckResponse != null) {
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204 | Iterator<Entry<String, NamedList<Object>>> wordsIterator = spellCheckResponse
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205 | .iterator();
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206 |
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207 | while (wordsIterator.hasNext()) {
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208 | Entry<String, NamedList<Object>> entry = wordsIterator.next();
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209 | String word = entry.getKey();
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210 | NamedList<Object> spellCheckWordResponse = entry.getValue();
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211 | boolean correct = spellCheckWordResponse.get("frequency")
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212 | .equals(1);
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213 | System.out.println("Word: " + word + ",\tCorrect?: " + correct);
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214 | NamedList<Integer> suggestions = (NamedList<Integer>) spellCheckWordResponse
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215 | .get("suggestions");
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216 | if (suggestions != null && suggestions.size() > 0) {
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217 | System.out.println("Suggestions : ");
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218 | Iterator<Entry<String, Integer>> suggestionsIterator = suggestions
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219 | .iterator();
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220 | while (suggestionsIterator.hasNext()) {
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221 | System.out.println("\t"
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222 | + suggestionsIterator.next().getKey());
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223 | }
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224 |
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225 | }
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226 | System.out.println("");
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227 | }
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228 |
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229 | }
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230 |
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231 | }
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232 |
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233 | }
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