Add a lucene and jexl implementations of a stochastic query builder f…

…or use in randomized input testing (#2381)

warehouse/query-core/src/main/java/datawave/query/common/grouping/GroupFields.java

@@ -1,7 +1,6 @@
 package datawave.query.common.grouping;
 
 import java.io.Serializable;
-import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -13,9 +12,7 @@
 import org.apache.commons.lang.StringUtils;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
-import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonValue;
-import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Multimap;
 import com.google.common.collect.Sets;

warehouse/query-core/src/main/java/datawave/query/jexl/visitors/QueryOptionsFromQueryVisitor.java

@@ -4,9 +4,7 @@
 import static org.apache.commons.jexl3.parser.ParserTreeConstants.JJTORNODE;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -22,12 +20,10 @@
 import org.apache.commons.jexl3.parser.ASTStringLiteral;
 import org.apache.commons.jexl3.parser.JexlNode;
 import org.apache.commons.jexl3.parser.JexlNodes;
-import org.apache.commons.lang3.StringUtils;
 
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableSet;
 
-import datawave.query.Constants;
 import datawave.query.QueryParameters;
 import datawave.query.attributes.UniqueFields;
 import datawave.query.attributes.UniqueGranularity;

warehouse/query-core/src/test/java/datawave/query/jexl/util/AbstractQueryGenerator.java

@@ -0,0 +1,123 @@
+package datawave.query.jexl.util;
+
+import java.util.List;
+import java.util.Random;
+import java.util.Set;
+
+import com.google.common.collect.Lists;
+
+public abstract class AbstractQueryGenerator implements QueryGenerator {
+
+    protected boolean intersectionsEnabled = true;
+    protected boolean unionsEnabled = true;
+    protected boolean negationsEnabled = false;
+    protected boolean regexEnabled = false;
+    protected boolean filterFunctionsEnabled = false;
+    protected boolean contentFunctionsEnabled = false;
+    protected boolean groupingFunctionsEnabled = false;
+
+    protected final Random random = new Random();
+    protected final StringBuilder sb = new StringBuilder();
+
+    protected final List<String> fields;
+    protected final List<String> values;
+
+    enum NodeType {
+        EQ, NE, ER, FILTER_FUNCTION, CONTENT_FUNCTION, GROUPING_FUNCTION
+    }
+
+    public AbstractQueryGenerator(Set<String> fields, Set<String> values) {
+        this.fields = Lists.newArrayList(fields);
+        this.values = Lists.newArrayList(values);
+    }
+
+    public void validateOptions() {
+        if (!intersectionsEnabled && !unionsEnabled) {
+            throw new IllegalStateException("cannot disable both unions and intersections");
+        }
+    }
+
+    public QueryGenerator enableIntersections() {
+        intersectionsEnabled = true;
+        return this;
+    }
+
+    public QueryGenerator disableIntersections() {
+        intersectionsEnabled = false;
+        return this;
+    }
+
+    public QueryGenerator enableUnions() {
+        unionsEnabled = true;
+        return this;
+    }
+
+    public QueryGenerator disableUnions() {
+        unionsEnabled = false;
+        return this;
+    }
+
+    public QueryGenerator enableNegations() {
+        negationsEnabled = true;
+        return this;
+    }
+
+    public QueryGenerator disableNegations() {
+        negationsEnabled = false;
+        return this;
+    }
+
+    public QueryGenerator enableRegexes() {
+        regexEnabled = true;
+        return this;
+    }
+
+    public QueryGenerator disableRegexes() {
+        regexEnabled = false;
+        return this;
+    }
+
+    public QueryGenerator enableFilterFunctions() {
+        filterFunctionsEnabled = true;
+        return this;
+    }
+
+    public QueryGenerator disableFilterFunctions() {
+        filterFunctionsEnabled = false;
+        return this;
+    }
+
+    public QueryGenerator enableContentFunctions() {
+        contentFunctionsEnabled = true;
+        return this;
+    }
+
+    public QueryGenerator disableContentFunctions() {
+        contentFunctionsEnabled = false;
+        return this;
+    }
+
+    public QueryGenerator enableGroupingFunctions() {
+        groupingFunctionsEnabled = true;
+        return this;
+    }
+
+    public QueryGenerator disableGroupingFunctions() {
+        groupingFunctionsEnabled = false;
+        return this;
+    }
+
+    public QueryGenerator enableAllOptions() {
+        return enableNegations().enableRegexes().enableFilterFunctions().enableContentFunctions().enableGroupingFunctions();
+    }
+
+    public QueryGenerator disableAllOptions() {
+        return disableNegations().disableRegexes().disableFilterFunctions().disableContentFunctions().disableGroupingFunctions();
+    }
+
+    protected abstract void buildNode();
+
+    protected abstract void buildJunction();
+
+    protected abstract void buildLeaf();
+}