org.springframework.expression

Interface ConstructorExecutor

All Known Implementing Classes:

ReflectiveConstructorExecutor

public interface ConstructorExecutor

Executors are built by resolvers and can be cached by the infrastructure to repeat an operation quickly without going back to the resolvers. For example, the particular constructor to run on a class may be discovered by the reflection constructor resolver - it will then build a ConstructorExecutor that executes that constructor and the ConstructorExecutor can be reused without needing to go back to the resolver to discover the constructor again.

They can become stale, and in that case should throw an AccessException - this will cause the infrastructure to go back to the resolvers to ask for a new one.

Since:

3.0

Author:

Andy Clement

Method Summary

Modifier and Type	Method and Description
TypedValue	execute(EvaluationContext context, Object... arguments) Execute a constructor in the specified context using the specified arguments.

Method Detail

execute

TypedValue execute(EvaluationContext context,
                   Object... arguments)
            throws AccessException

Execute a constructor in the specified context using the specified arguments.

Parameters:

context - the evaluation context in which the command is being executed

arguments - the arguments to the constructor call, should match (in terms of number and type) whatever the command will need to run

Returns:

the new object

Throws:

AccessException - if there is a problem executing the command or the CommandExecutor is no longer valid