edit

Author: usfalami

src/main/java/org/usf/jquery/core/ColumnSingleFilter.java

@@ -14,7 +14,7 @@
  * @author u$f
  *
  */
-@RequiredArgsConstructor(access = AccessLevel.PACKAGE)
+@RequiredArgsConstructor
 public class ColumnSingleFilter implements DBFilter {
 
 	private final Object left;

src/main/java/org/usf/jquery/core/ComparisonExpressionGroup.java

@@ -5,7 +5,7 @@
 import static org.usf.jquery.core.Nested.viewsOfNested;
 import static org.usf.jquery.core.QueryVariables.addWithValue;
 import static org.usf.jquery.core.Utils.appendLast;
-import static org.usf.jquery.core.Validation.requireNArgs;
+import static org.usf.jquery.core.Validation.requireAtLeastNArgs;
 
 import java.util.Collection;
 import java.util.stream.Stream;
@@ -23,7 +23,7 @@ public final class ComparisonExpressionGroup implements ComparisonExpression {
 
 	ComparisonExpressionGroup(LogicalOperator operator, ComparisonExpression... expressions) {
 		this.operator = operator;
-		this.expressions = requireNArgs(1, expressions, ComparisonExpressionGroup.class::getSimpleName);
+		this.expressions = requireAtLeastNArgs(1, expressions, ComparisonExpressionGroup.class::getSimpleName);
 	}
 
 	@Override

src/main/java/org/usf/jquery/core/Nested.java

@@ -4,6 +4,9 @@
 import static org.usf.jquery.core.Utils.isEmpty;
 
 import java.util.Collection;
+import java.util.function.BiConsumer;
+import java.util.function.BiFunction;
+import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.Predicate;
 

src/main/java/org/usf/jquery/core/QueryView.java

@@ -11,10 +11,10 @@
  * @author u$f
  *
  */
+@Getter
 @RequiredArgsConstructor(access = AccessLevel.PACKAGE)
 public final class QueryView implements DBView {
 
-	@Getter
 	private final QueryBuilder builder;
 
 	@Override

src/main/java/org/usf/jquery/web/RevisionIterator.java

@@ -11,6 +11,7 @@
 import java.util.Map.Entry;
 import java.util.stream.Stream;
 
+import org.usf.jquery.core.ColumnSingleFilter;
 import org.usf.jquery.core.DBColumn;
 import org.usf.jquery.core.DBFilter;
 import org.usf.jquery.core.QueryVariables;
@@ -68,12 +69,15 @@ static DBColumn yearColumn() {
 	}
 
 	static DBFilter monthFilter(DBColumn column) {
-		return b-> {
-			var values = currentRev.get().getValue();  //get it on build
-			var filter = values.size() == 1 
-					? column.eq(values.get(0).getMonthValue())
-					: column.in(values.stream().map(YearMonth::getMonthValue).toArray(Integer[]::new));
-			return filter.sql(b);
+		return new ColumnSingleFilter(null, null) {
+			@Override
+			public String sql(QueryVariables vars) {
+				var values = currentRev.get().getValue();  //get it on build
+				var filter = values.size() == 1 
+						? column.eq(values.get(0).getMonthValue())
+						: column.in(values.stream().map(YearMonth::getMonthValue).toArray(Integer[]::new));
+				return filter.sql(vars);
+			}
 		};
 	}
 }