DATASOLR-153 - Added support for dismax queries.

Author: Matt Hall

src/main/java/org/springframework/data/solr/core/DefaultQueryParser.java

@@ -15,11 +15,14 @@
  */
 package org.springframework.data.solr.core;
 
+import static org.apache.solr.common.params.CommonParams.*;
+import static org.apache.solr.common.params.DisMaxParams.*;
+import static org.apache.solr.common.params.SimpleParams.QF;
+
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map.Entry;
-
 import org.apache.commons.lang3.StringUtils;
 import org.apache.solr.client.solrj.SolrQuery;
 import org.apache.solr.client.solrj.SolrQuery.ORDER;
@@ -36,7 +39,6 @@
 import org.springframework.data.domain.Sort.Order;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.solr.core.query.*;
-import org.springframework.data.solr.core.query.Criteria.Predicate;
 import org.springframework.data.solr.core.query.FacetOptions.FacetParameter;
 import org.springframework.data.solr.core.query.FacetOptions.FieldWithDateRangeParameters;
 import org.springframework.data.solr.core.query.FacetOptions.FieldWithFacetParameters;
@@ -65,6 +67,7 @@
  * @author Joachim Uhrlaß
  * @author Petar Tahchiev
  * @author Juan Manuel de Blas
+ * @author Matthew Hall
  */
 public class DefaultQueryParser extends QueryParserBase<SolrDataQuery> {
 
@@ -109,6 +112,10 @@ public final SolrQuery doConstructSolrQuery(SolrDataQuery query, @Nullable Class
 			processHighlightOptions(solrQuery, (HighlightQuery) query, domainType);
 		}
 
+		if (query instanceof DisMaxQuery) {
+			processDisMaxOptions(solrQuery, (DisMaxQuery) query);
+		}
+
 		return solrQuery;
 	}
 
@@ -132,6 +139,38 @@ private void processQueryOptions(SolrQuery solrQuery, Query query, @Nullable Cla
 		LOGGER.debug("Constructed SolrQuery:\r\n {}", solrQuery);
 	}
 
+	protected void processDisMaxOptions(SolrQuery solrQuery, DisMaxQuery disMaxQuery) {
+
+		if (disMaxQuery == null || disMaxQuery.getDisMaxOptions() == null) {
+			return;
+		}
+
+		DisMaxOptions disMaxOptions = disMaxQuery.getDisMaxOptions();
+
+		solrQuery.set("defType", "dismax");
+
+		setSolrParamIfPresent(solrQuery, DF, disMaxOptions.getDefaultField());
+
+		setSolrParamIfPresent(solrQuery, ALTQ, disMaxOptions.getAltQuery());
+		setSolrParamIfPresent(solrQuery, QF, disMaxOptions.getQueryFunction());
+		setSolrParamIfPresent(solrQuery, MM, disMaxOptions.getMinimumMatch());
+
+		setSolrParamIfPresent(solrQuery, BQ, disMaxOptions.getBoostQuery());
+		setSolrParamIfPresent(solrQuery, BF, disMaxOptions.getBoostFunction());
+		setSolrParamIfPresent(solrQuery, PF, disMaxOptions.getPhraseFunction());
+
+		setSolrParamIfPresent(solrQuery, PS, disMaxOptions.getPhraseSlop() == null ? null :
+				String.valueOf(disMaxOptions.getPhraseSlop()));
+		setSolrParamIfPresent(solrQuery, QS, disMaxOptions.getQuerySlop() == null ? null : String.valueOf(disMaxOptions.getQuerySlop()));
+		setSolrParamIfPresent(solrQuery, TIE, disMaxOptions.getTie() == null ? null : String.valueOf(disMaxOptions.getTie()));
+	}
+
+	private static void setSolrParamIfPresent(SolrQuery solrQuery, String param, String value) {
+		if (!org.springframework.util.StringUtils.isEmpty(value)) {
+			solrQuery.setParam(param, value);
+		}
+	}
+
 	private void processFacetOptions(SolrQuery solrQuery, FacetQuery query, @Nullable Class<?> domainType) {
 
 		if (enableFaceting(solrQuery, query)) {

src/main/java/org/springframework/data/solr/core/QueryParserBase.java

@@ -25,7 +25,6 @@
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
-
 import org.apache.commons.lang3.StringUtils;
 import org.apache.solr.client.solrj.SolrClient;
 import org.apache.solr.client.solrj.SolrQuery;
@@ -62,6 +61,7 @@
  * @author Radek Mensik
  * @author David Webb
  * @author Michael Rocke
+ * @author Matthew Hall
  */
 public abstract class QueryParserBase<QUERYTPYE extends SolrDataQuery> implements QueryParser {
 
@@ -1064,6 +1064,31 @@ public Map<String, Object> getNamesAssociation() {
 		}
 	}
 
+	/**
+	 * @author Matthew Hall
+	 * @since 4.1
+	 */
+	static class NamedObjectsDisMaxQuery extends AbstractDisMaxQueryDecorator implements NamedObjects {
+
+		private Map<String, Object> namesAssociation = new HashMap<>();
+
+		public NamedObjectsDisMaxQuery(DisMaxQuery query) {
+			super(query);
+		}
+
+		@Override
+		public void setName(Object object, String name) {
+			setObjectName(namesAssociation, object, name);
+		}
+
+		@Override
+		public Map<String, Object> getNamesAssociation() {
+			return Collections.unmodifiableMap(namesAssociation);
+		}
+
+	}
+
+
 	/**
 	 * Create new new {@link Context} for rendering {@link Function functions}.
 	 *

src/main/java/org/springframework/data/solr/core/QueryParsers.java

@@ -19,11 +19,11 @@
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
-
 import org.apache.solr.client.solrj.SolrQuery;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.solr.core.mapping.SolrPersistentEntity;
 import org.springframework.data.solr.core.mapping.SolrPersistentProperty;
+import org.springframework.data.solr.core.query.DisMaxQuery;
 import org.springframework.data.solr.core.query.FacetQuery;
 import org.springframework.data.solr.core.query.HighlightQuery;
 import org.springframework.data.solr.core.query.Query;
@@ -35,6 +35,7 @@
 
 /**
  * @author Christoph Strobl
+ *  @author Matthew Hall
  */
 public class QueryParsers {
 
@@ -60,6 +61,7 @@ public QueryParsers(
 		parserPairs.add(new QueryParserPair(FacetQuery.class, defaultQueryParser));
 		parserPairs.add(new QueryParserPair(HighlightQuery.class, defaultQueryParser));
 		parserPairs.add(new QueryParserPair(Query.class, defaultQueryParser));
+		parserPairs.add(new QueryParserPair(DisMaxQuery.class, defaultQueryParser));
 	}
 
 	/**

src/main/java/org/springframework/data/solr/core/SolrOperations.java

@@ -18,13 +18,13 @@
 import java.time.Duration;
 import java.util.Collection;
 import java.util.Optional;
-
 import org.apache.solr.client.solrj.SolrClient;
 import org.apache.solr.client.solrj.response.SolrPingResponse;
 import org.apache.solr.client.solrj.response.UpdateResponse;
 import org.apache.solr.common.SolrInputDocument;
 import org.springframework.data.domain.Page;
 import org.springframework.data.solr.core.convert.SolrConverter;
+import org.springframework.data.solr.core.query.DisMaxQuery;
 import org.springframework.data.solr.core.query.FacetAndHighlightQuery;
 import org.springframework.data.solr.core.query.FacetQuery;
 import org.springframework.data.solr.core.query.HighlightQuery;
@@ -37,6 +37,7 @@
 import org.springframework.data.solr.core.query.result.GroupPage;
 import org.springframework.data.solr.core.query.result.HighlightPage;
 import org.springframework.data.solr.core.query.result.ScoredPage;
+import org.springframework.data.solr.core.query.result.SolrResultPage;
 import org.springframework.data.solr.core.query.result.StatsPage;
 import org.springframework.data.solr.core.query.result.TermsPage;
 import org.springframework.data.solr.core.schema.SchemaOperations;
@@ -50,6 +51,7 @@
  * @author Francisco Spaeth
  * @author Shiradwade Sateesh Krishna
  * @author David Webb
+ * @author Matthew Hall
  */
 public interface SolrOperations {
 
@@ -455,6 +457,29 @@ <T> FacetAndHighlightPage<T> queryForFacetAndHighlightPage(String collection, Fa
 	 */
 	<T> StatsPage<T> queryForStatsPage(String collection, Query query, Class<T> clazz, RequestMethod method);
 
+	/**
+	 * Execute the query against Solr and return result as {@link StatsPage}.
+	 *
+	 * @param collection must not be {@literal null}.
+	 * @param query must not be {@literal null}.
+	 * @param clazz must not be {@literal null}.
+	 * @return never {@literal null}.
+	 * @since 4.1
+	 */
+	<T> SolrResultPage<T> queryForDisMaxPage(String collection, DisMaxQuery query, Class<T> clazz);
+
+	/**
+	 * Execute the query against Solr and return result as {@link StatsPage}.
+	 *
+	 * @param collection must not be {@literal null}.
+	 * @param query must not be {@literal null}.
+	 * @param clazz must not be {@literal null}.
+	 * @param requestMethod must not be {@literal null}.
+	 * @return never {@literal null}.
+	 * @since 4.1
+	 */
+	public <T> SolrResultPage<T> queryForDisMaxPage(String collection, DisMaxQuery query, Class<T> clazz,
+			@Nullable RequestMethod requestMethod);
 	/**
 	 * Execute the query against Solr and return result as page.
 	 *

src/main/java/org/springframework/data/solr/core/SolrTemplate.java

@@ -27,7 +27,6 @@
 import java.util.Optional;
 import java.util.Set;
 import java.util.stream.Collectors;
-
 import org.apache.solr.client.solrj.SolrClient;
 import org.apache.solr.client.solrj.SolrQuery;
 import org.apache.solr.client.solrj.SolrRequest;
@@ -52,6 +51,7 @@
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.solr.UncategorizedSolrException;
+import org.springframework.data.solr.core.QueryParserBase.NamedObjectsDisMaxQuery;
 import org.springframework.data.solr.core.QueryParserBase.NamedObjectsFacetAndHighlightQuery;
 import org.springframework.data.solr.core.QueryParserBase.NamedObjectsFacetQuery;
 import org.springframework.data.solr.core.QueryParserBase.NamedObjectsHighlightQuery;
@@ -62,6 +62,7 @@
 import org.springframework.data.solr.core.mapping.SolrPersistentEntity;
 import org.springframework.data.solr.core.mapping.SolrPersistentProperty;
 import org.springframework.data.solr.core.query.AbstractQueryDecorator;
+import org.springframework.data.solr.core.query.DisMaxQuery;
 import org.springframework.data.solr.core.query.FacetAndHighlightQuery;
 import org.springframework.data.solr.core.query.FacetQuery;
 import org.springframework.data.solr.core.query.HighlightQuery;
@@ -91,6 +92,7 @@
  * @author Petar Tahchiev
  * @author Mark Paluch
  * @author Juan Manuel de Blas
+ * @author Matthew Hall
  */
 public class SolrTemplate implements SolrOperations, InitializingBean, ApplicationContextAware {
 
@@ -431,6 +433,24 @@ public <T> FacetAndHighlightPage<T> queryForFacetAndHighlightPage(String collect
 		return createSolrResultPage(query, clazz, response, objectsName);
 	}
 
+	@Override
+	public <T> SolrResultPage<T> queryForDisMaxPage(String collection, DisMaxQuery query, Class<T> clazz) {
+		return queryForDisMaxPage(collection, query, clazz, null);
+	}
+
+	@Override
+	public <T> SolrResultPage<T> queryForDisMaxPage(String collection, DisMaxQuery query, Class<T> clazz,
+			@Nullable RequestMethod requestMethod) {
+
+		QueryResponse response;
+		NamedObjectsDisMaxQuery namedObjectsQuery = new NamedObjectsDisMaxQuery(query);
+		response = querySolr(collection, namedObjectsQuery, clazz,
+				requestMethod != null ? requestMethod : getDefaultRequestMethod());
+		Map<String, Object> objectsName = namedObjectsQuery.getNamesAssociation();
+
+		return createSolrResultPage(query, clazz, response, objectsName);
+	}
+
 	private <T> SolrResultPage<T> createSolrResultPage(Query query, Class<T> clazz, QueryResponse response,
 			Map<String, Object> objectsName) {
 

src/main/java/org/springframework/data/solr/core/query/AbstractDisMaxQueryDecorator.java

@@ -0,0 +1,30 @@
+package org.springframework.data.solr.core.query;
+
+import org.springframework.lang.Nullable;
+
+
+/**
+ * General purpose {@link DisMaxQuery} decorator.
+ *
+ * @author Matthew Hall
+ * @since 4.1.0
+ */
+public abstract class AbstractDisMaxQueryDecorator extends AbstractQueryDecorator implements DisMaxQuery {
+
+  private DisMaxQuery query;
+
+  public AbstractDisMaxQueryDecorator(DisMaxQuery query) {
+    super(query);
+    this.query = query;
+  }
+
+  @Nullable
+  @Override
+  public DisMaxOptions getDisMaxOptions() {
+    return this.query.getDisMaxOptions();
+  }
+
+  public <T extends SolrDataQuery> T setDisMaxOptions(DisMaxOptions disMaxOptions) {
+    return this.query.setDisMaxOptions(disMaxOptions);
+  }
+}