## Package org.springframework.expression

Interface Summary
BeanResolver: A bean resolver can be registered with the evaluation context and will kick in for `@myBeanName` still expressions.
ConstructorExecutor: Executors are built by resolvers and can be cached by the infrastructure to repeat an operation quickly without going back to the resolvers.
ConstructorResolver: A constructor resolver attempts locate a constructor and returns a ConstructorExecutor that can be used to invoke that constructor.
EvaluationContext: Expressions are executed in an evaluation context.
Expression: An expression capable of evaluating itself against context objects.
ExpressionParser: Parses expression strings into compiled expressions that can be evaluated.
MethodExecutor: MethodExecutors are built by the resolvers and can be cached by the infrastructure to repeat an operation quickly without going back to the resolvers.
MethodFilter: MethodFilter instances allow SpEL users to fine tune the behaviour of the method resolution process.
MethodResolver: A method resolver attempts locate a method and returns a command executor that can be used to invoke that method.
OperatorOverloader: By default the mathematical operators `Operation` support simple types like numbers.
ParserContext: Input provided to an expression parser that can influence an expression parsing/compilation routine.
PropertyAccessor: A property accessor is able to read (and possibly write) to object properties.
TypeComparator: Instances of a type comparator should be able to compare pairs of objects for equality, the specification of the return value is the same as for `Comparable`.
TypeConverter: A type converter can convert values between different types encountered during expression evaluation.
TypeLocator: Implementors of this interface are expected to be able to locate types.

Class Summary
TypedValue: Encapsulates an object and a type descriptor that describes it.

Enum Summary
Operation: Supported operations that an `OperatorOverloader` can implement for any pair of operands.

Exception Summary
AccessException: An AccessException is thrown by an accessor if it has an unexpected problem.
EvaluationException: Represent an exception that occurs during expression evaluation.
ExpressionException: Super class for exceptions that can occur whilst processing expressions
ExpressionInvocationTargetException: This exception wraps (as cause) a checked exception thrown by some method that SpEL invokes.
ParseException: Represent an exception that occurs during expression parsing.