| Name | Type | Package | Detail |
| BaseFilter | Class | trident.operation | Detail |
| Debug | Class | operation.builtin | Detail |
| Equals | Class | operation.builtin | Detail |
| FilterNull | Class | operation.builtin | Detail |
| Negate | Class | operation.builtin | Detail |
| TrueFilter | Class | operation.impl | Detail |
| TrueFilter | Class | trident.testing | Detail |
