added support for limit set to zero or negative as no limit

src/main/java/org/qortal/repository/hsqldb/HSQLDBCacheUtils.java

@@ -238,7 +238,7 @@ public class HSQLDBCacheUtils {
         if( offset.isPresent() ) stream = stream.skip(offset.get());
 
         // truncate to limit
-        if( limit.isPresent() ) stream = stream.limit(limit.get());
+        if( limit.isPresent() && limit.get() > 0 ) stream = stream.limit(limit.get());
 
         // include metadata
         if( includeMetadata.isEmpty() || !includeMetadata.get() )

src/test/java/org/qortal/test/repository/HSQLDBCacheUtilsTests.java

@@ -504,6 +504,20 @@ public class HSQLDBCacheUtilsTests {
         );
     }
 
+    @Test
+    public void testLimitZero() {
+
+        ArbitraryResourceData data = new ArbitraryResourceData();
+        data.name = "Joe";
+
+        filterListByMap(
+                List.of(data),
+                NAME_LEVEL,
+                new HashMap<>(Map.of(LIMIT, 0)),
+                1
+        );
+    }
+
     @Test
     public void testOffset() {