SEARCH-409: Adding a Solr stats request

src/main/java/org/alfresco/service/cmr/search/SearchParameters.java

@@ -193,6 +193,8 @@ public class SearchParameters implements BasicSearchParameters
 
     private IntervalParameters interval;
 
+    private List<StatsRequestParameters> stats;
+
     /**
      * Default constructor
      */
@@ -240,6 +242,7 @@ public class SearchParameters implements BasicSearchParameters
         sp.spellCheck = this.spellCheck;
         sp.highlight = this.highlight;
         sp.interval = this.interval;
+        sp.stats = this.stats;
         return sp;
     }
     
@@ -295,6 +298,16 @@ public class SearchParameters implements BasicSearchParameters
         this.highlight = highlight;
     }
 
+    public List<StatsRequestParameters> getStats()
+    {
+        return stats;
+    }
+
+    public void setStats(List<StatsRequestParameters> stats)
+    {
+        this.stats = stats;
+    }
+
     public IntervalParameters getInterval()
     {
         return interval;
@@ -1277,10 +1290,12 @@ public class SearchParameters implements BasicSearchParameters
                     .append(", queryTemplates=").append(this.queryTemplates).append(", namespace=")
                     .append(this.namespace).append(", maxPermissionChecks=").append(this.maxPermissionChecks)
                     .append(", maxPermissionCheckTimeMillis=").append(this.maxPermissionCheckTimeMillis)
-                    .append(", defaultFieldName=").append(this.defaultFieldName).append(", fieldFacets=")
+                    .append(", defaultFieldName=").append(this.defaultFieldName)
-                    .append(this.fieldFacets).append(", facetQueries=").append(this.facetQueries)
+                    .append(", fieldFacets=").append(this.fieldFacets)
-                    .append(this.filterQueries).append(", filterQueries=").append(this.filterQueries)
+                    .append(", facetQueries=").append(this.facetQueries)
-                    .append(this.pivots).append(", pivots=").append(this.pivots)
+                    .append(", filterQueries=").append(this.filterQueries)
+                    .append(", pivots=").append(this.pivots)
+                    .append(", stats=").append(this.stats)
                     .append(", useInMemorySort=").append(this.useInMemorySort)
                     .append(", maxRawResultSetSizeForInMemorySort=").append(this.maxRawResultSetSizeForInMemorySort)
                     .append(", extraParameters=").append(this.extraParameters).append(", excludeTenantFilter=")

src/main/java/org/alfresco/service/cmr/search/StatsRequestParameters.java

@@ -0,0 +1,183 @@
+/*
+ * #%L
+ * Alfresco Data model classes
+ * %%
+ * Copyright (C) 2005 - 2017 Alfresco Software Limited
+ * %%
+ * This file is part of the Alfresco software.
+ * If the software was purchased under a paid Alfresco license, the terms of
+ * the paid license agreement will prevail.  Otherwise, the software is
+ * provided under the following open source license terms:
+ *
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ * #L%
+ */
+package org.alfresco.service.cmr.search;
+
+import org.codehaus.jackson.annotate.JsonCreator;
+import org.codehaus.jackson.annotate.JsonProperty;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * POJO class representing Stats request
+ */
+public class StatsRequestParameters
+{
+    private final String field;
+    private final String label;
+    private final List<Float> percentiles;
+    private final Boolean min;
+    private final Boolean max;
+    private final Boolean sum;
+    private final Boolean count;
+    private final Boolean missing;
+    private final Boolean sumOfSquares;
+    private final Boolean mean;
+    private final Boolean stddev;
+    private final Boolean distinctValues;
+    private final Boolean countDistinct;
+    private final Boolean cardinality;
+    private final Float cardinalityAccuracy;
+    private final List<String> excludeFilters;
+
+    @JsonCreator
+    public StatsRequestParameters(
+                 @JsonProperty("field") String field,
+                 @JsonProperty("label") String label,
+                 @JsonProperty("percentiles") List<Float> percentiles,
+                 @JsonProperty("min") Boolean min,
+                 @JsonProperty("max") Boolean max,
+                 @JsonProperty("sum") Boolean sum,
+                 @JsonProperty("count") Boolean count,
+                 @JsonProperty("missing") Boolean missing,
+                 @JsonProperty("sumOfSquares") Boolean sumOfSquares,
+                 @JsonProperty("mean") Boolean mean,
+                 @JsonProperty("stddev") Boolean stddev,
+                 @JsonProperty("distinctValues") Boolean distinctValues,
+                 @JsonProperty("countDistinct") Boolean countDistinct,
+                 @JsonProperty("cardinality") Boolean cardinality,
+                 @JsonProperty("cardinalityAccuracy") Float cardinalityAccuracy,
+                 @JsonProperty("excludeFilters") List<String> excludeFilters)
+    {
+        this.field = field;
+        this.label = label;
+        this.percentiles = percentiles == null? Collections.emptyList():percentiles;
+
+        this.min = min == null?true:min;
+        this.max = max == null?true:max;
+        this.sum = sum == null?true:sum;
+        this.count = count == null?true:count;
+        this.missing = missing == null?true:missing;
+        this.sumOfSquares = sumOfSquares == null?true:sumOfSquares;
+        this.mean = mean == null?true:mean;
+        this.stddev = stddev == null?true:stddev;
+
+        this.distinctValues = distinctValues == null?false:distinctValues;
+        this.countDistinct = countDistinct == null?false:countDistinct;
+        this.cardinality = cardinality == null?false:cardinality;
+        this.cardinalityAccuracy = cardinalityAccuracy == null?0.3f:cardinalityAccuracy;
+        this.excludeFilters = excludeFilters == null? Collections.emptyList():excludeFilters;
+    }
+
+    public String getField()
+    {
+        return field;
+    }
+
+    public String getLabel()
+    {
+        return label;
+    }
+
+    public List<Float> getPercentiles()
+    {
+        return percentiles;
+    }
+
+    public Boolean getDistinctValues()
+    {
+        return distinctValues;
+    }
+
+    public Boolean getCountDistinct()
+    {
+        return countDistinct;
+    }
+
+    public Boolean getCardinality()
+    {
+        return cardinality;
+    }
+
+    public Float getCardinalityAccuracy()
+    {
+        return cardinalityAccuracy;
+    }
+
+    public List<String> getExcludeFilters()
+    {
+        return excludeFilters;
+    }
+
+    public Boolean getMin()
+    {
+        return min;
+    }
+
+    public Boolean getMax()
+    {
+        return max;
+    }
+
+    public Boolean getSum()
+    {
+        return sum;
+    }
+
+    public Boolean getCount()
+    {
+        return count;
+    }
+
+    public Boolean getMissing()
+    {
+        return missing;
+    }
+
+    public Boolean getSumOfSquares()
+    {
+        return sumOfSquares;
+    }
+
+    public Boolean getMean()
+    {
+        return mean;
+    }
+
+    public Boolean getStddev()
+    {
+        return stddev;
+    }
+
+    @Override
+    public String toString()
+    {
+        return "StatsRequestParameters{" + "field='" + field + '\'' + ", label='" + label + '\'' + ", percentiles=" + percentiles + ", min=" + min
+                    + ", max=" + max + ", sum=" + sum + ", count=" + count + ", missing=" + missing + ", sumOfSquares=" + sumOfSquares + ", mean="
+                    + mean + ", stddev=" + stddev + ", distinctValues=" + distinctValues + ", countDistinct=" + countDistinct + ", cardinality="
+                    + cardinality + ", cardinalityAccuracy=" + cardinalityAccuracy + ", excludeFilters=" + excludeFilters + '}';
+    }
+}