Fix for ElasticQueryBuilder

src/main/java/org/genesys2/server/component/elastic/ElasticQueryBuilder.java

@@ -7,6 +7,7 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
+import com.querydsl.core.types.OperationImpl;
 import org.elasticsearch.index.query.BoolQueryBuilder;
 import org.elasticsearch.index.query.MatchQueryBuilder;
 import org.elasticsearch.index.query.QueryBuilder;
@@ -102,21 +103,32 @@ public class ElasticQueryBuilder implements Visitor<Void, Void> {
 				expr.accept(self, null);
 			}
 		} else if (operator == Ops.EQ || operator == Ops.IN) {
-			LOG.debug("EQUALS: {}", args);
-			for (Expression<?> expr : args) {
-				printExpression("EQUALS.. ", expr);
+			if (Path.class.isAssignableFrom(args.get(0).getClass())) {
+				LOG.debug("EQUALS: {}", args);
+				for (Expression<?> expr : args) {
+					printExpression("EQUALS.. ", expr);
+				}
+				Path<?> a0 = (Path<?>) args.get(0);
+				Expression<?> a1 = args.get(1);
+				handleEquals(a0, a1);
+			} else {
+				Path<?> path = (Path<?>)((OperationImpl) args.get(0)).getArg(0);
+				PathMetadata pmd = path.getMetadata();
+				mustNotClauses.add(existsQuery(customizedPath(pmd.getParent().toString() + "." + pmd.getName())));
 			}
-			Path<?> a0 = (Path<?>) args.get(0);
-			Expression<?> a1 = args.get(1);
-
-			handleEquals(a0, a1);
 		} else if (operator == Ops.LOE || operator == Ops.GOE || operator == Ops.BETWEEN || operator == Ops.LT || operator == Ops.GT) {
-			LOG.debug("Range: {}", args);
-			for (Expression<?> expr : args) {
-				printExpression("LOE.. ", expr);
+			if (Path.class.isAssignableFrom(args.get(0).getClass())) {
+				LOG.debug("Range: {}", args);
+				for (Expression<?> expr : args) {
+					printExpression("LOE.. ", expr);
+				}
+				Path<?> a0 = (Path<?>) args.get(0);
+				handleRange(operator, a0, args.get(1), args.size() > 2 ? args.get(2) : null);
+			} else {
+				Path<?> path = (Path<?>)((OperationImpl) args.get(0)).getArg(0);
+				PathMetadata pmd = path.getMetadata();
+				mustClauses.add(existsQuery(customizedPath(pmd.getParent().toString() + "." + pmd.getName())));
 			}
-			Path<?> a0 = (Path<?>) args.get(0);
-			handleRange(operator, a0, args.get(1), args.size() > 2 ? args.get(2) : null);
 		} else if (operator == Ops.STRING_CONTAINS || operator == Ops.STARTS_WITH) {
 			LOG.debug("{}: {}", operator, args);
 			for (Expression<?> expr : args) {
@@ -141,7 +153,7 @@ public class ElasticQueryBuilder implements Visitor<Void, Void> {
 			Path<?> path = (Path<?>) args.get(0);
 			PathMetadata pmd = path.getMetadata();
 			mustClauses.add(existsQuery(customizedPath(pmd.getParent().toString() + "." + pmd.getName())));
-		} else if (operator == Ops.IS_NULL) {
+		} else if (operator == Ops.IS_NULL || operator == Ops.COL_IS_EMPTY) {
 			LOG.debug("{}: {}", operator, args);
 			for (Expression<?> expr : args) {
 				printExpression(operator + ".. ", expr);