## Package org.hibernate.hql.ast.tree

Interface Summary
AggregatedSelectExpression: Contract for a select expression which aggregates other select expressions together into a single return
BinaryOperatorNode: Contract for nodes representing binary operators.
DisplayableNode: Implementors will return additional display text, which will be used by the ASTPrinter to display information (besides the node type and node text).
DotNode.IllegalCollectionDereferenceExceptionBuilder
ExpectedTypeAwareNode: Interface for nodes which wish to be made aware of any determined "expected type" based on the context within they appear in the query.
FunctionNode: Identifies a node which models a SQL function.
InitializeableNode: An interface for initializeable AST nodes.
OperatorNode: Contract for nodes representing operators (logic or arithmetic).
ParameterContainer: Deprecated.
PathNode: An AST node with a path property.
ResolvableNode: The contract for expression sub-trees that can resolve themselves.
RestrictableStatement: Type definition for Statements which are restrictable via a where-clause (and thus also having a from-clause).
SelectExpression: Represents an element of a projection list, i.e.
SessionFactoryAwareNode: Interface for nodes which require access to the SessionFactory
Statement: Common interface modeling the different HQL statements (i.e., INSERT, UPDATE, DELETE, SELECT).
UnaryOperatorNode: Contract for nodes representing unary operators.

Class Summary
AbstractMapComponentNode: TODO : javadoc
AbstractNullnessCheckNode: Base class for nodes dealing 'is null' and 'is not null' operators.
AbstractRestrictableStatement: Convenience implementation of `RestrictableStatement` to centralize common functionality.
AbstractSelectExpression: Partial implementation of SelectExpression for all the nodes that aren't constructors.
AbstractStatement: Convenience implementation of Statement to centralize common functionality.
AggregateNode: Represents an aggregate function i.e.
AssignmentSpecification: Encapsulates the information relating to an individual assignment within the set clause of an HQL update statement.
BetweenOperatorNode: Contract for nodes representing logcial BETWEEN (ternary) operators.
BinaryArithmeticOperatorNode: Nodes which represent binary arithmetic operators.
BinaryLogicOperatorNode: Contract for nodes representing binary operators.
BooleanLiteralNode: Represents a boolean literal within a query.
Case2Node: Represents a case ...
CaseNode: Represents a case ...
CollectionFunction: Represents 'elements()' or 'indices()'.
ComponentJoin: Models an explicit join terminating at a component value (e.g.
ConstructorNode: Represents a constructor (new) in a SELECT.
CountNode: Represents a COUNT expression in a select.
DeleteStatement: Defines a top-level AST node representing an HQL delete statement.
DotNode: Represents a reference to a property or alias expression.
FromClause: Represents the 'FROM' part of a query or subquery, containing all mapped class references.
FromElement: Represents a single mapped class mentioned in an HQL FROM clause.
FromElementFactory: Encapsulates the creation of FromElements and JoinSequences.
FromReferenceNode: Represents a reference to a FROM element, for example a class alias in a WHERE clause.
HqlSqlWalkerNode: A semantic analysis node, that points back to the main analyzer.
IdentNode: Represents an identifier all by itself, which may be a function name, a class alias, or a form of naked property-ref depending on the context.
ImpliedFromElement: Represents a FROM element implied by a path expression or a collection reference.
IndexNode: Represents the [] operator and provides it's semantics.
InLogicOperatorNode
InsertStatement: Defines a top-level AST node representing an HQL "insert select" statement.
IntoClause: Represents an entity referenced in the INTO clause of an HQL INSERT statement.
IsNotNullLogicOperatorNode: IsNotNullLogicOperatorNode implementation
IsNullLogicOperatorNode: Represents a 'is null' check.
JavaConstantNode: A node representing a static Java constant.
LiteralNode: Represents a literal.
MapEntryNode: TODO : javadoc
MapKeyNode: TODO : javadoc
MapValueNode: TODO : javadoc
MethodNode: Represents a method call.
Node: Base node class for use by Hibernate within its AST trees.
OrderByClause: Implementation of OrderByClause.
ParameterNode: Implementation of ParameterNode.
QueryNode: Defines a top-level AST node representing an HQL select statement.
ResultVariableRefNode: Represents a reference to a result_variable as defined in the JPA 2 spec.
SelectClause: Represents the list of expressions in a SELECT clause.
SelectExpressionImpl: A select expression that was generated by a FROM element.
SelectExpressionList: Common behavior - a node that contains a list of select expressions.
SqlFragment: Represents an SQL fragment in the AST.
SqlNode: A base AST node for the intermediate tree.
UnaryArithmeticNode
UnaryLogicOperatorNode: Represents a unary operator node.
UpdateStatement: Defines a top-level AST node representing an HQL update statement.

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