| AliasGenerator | Generates class/table/column aliases during semantic analysis and SQL rendering. |
| ASTAppender | Appends child nodes to a parent efficiently. |
| ASTIterator | Depth first iteration of an ANTLR AST. |
| ASTParentsFirstIterator | Depth first iteration of an ANTLR AST. |
| ASTPrinter | An 'ASCII art' AST printer for debugging ANTLR grammars. |
| ASTUtil | Provides utility methods for AST traversal and manipulation. |
| ASTUtil.IncludePredicate | A predicate that uses inclusion, rather than exclusion semantics. |
| ColumnHelper | Provides utility methods for dealing with arrays of SQL column names. |
| JoinProcessor | Performs the post-processing of the join information gathered during semantic analysis. |
| LiteralProcessor | A delegate that handles literals and constants for HqlSqlWalker, performing the token replacement functions and
classifying literals. |
| NodeTraverser | A visitor for traversing an AST tree. |
| PathHelper | Provides utility methods for paths. |
| SessionFactoryHelper | Helper for performing common and/or complex operations with the
SessionFactoryImplementor during translation of an HQL query. |
| SyntheticAndFactory | Creates synthetic and nodes based on the where fragment part of a JoinSequence. |