org.mvel.integration
Interface Interceptor

public interface Interceptor

An interceptor can be used to decorate functionality into an expression.

Author:

Christopher Brock

Field Summary

static int	END
static int	NORMAL_FLOW
static int	SKIP

Method Summary

int	doAfter(java.lang.Object exitStackValue, ASTNode node, VariableResolverFactory factory)
int	doBefore(ASTNode node, VariableResolverFactory factory) This method is executed before the wrapped statement.

Field Detail

NORMAL_FLOW

static final int NORMAL_FLOW

See Also:

Constant Field Values

SKIP

static final int SKIP

See Also:

Constant Field Values

END

static final int END

See Also:

Constant Field Values

Method Detail

doBefore

int doBefore(ASTNode node,
             VariableResolverFactory factory)

This method is executed before the wrapped statement.

Parameters:

node - The ASTNode wrapped by the interceptor

factory - The variable factory

Returns:

The response code. Should return 0.

doAfter

int doAfter(java.lang.Object exitStackValue,
            ASTNode node,
            VariableResolverFactory factory)

Parameters:

exitStackValue - The value on the top of the stack after executing the statement.

node - The ASTNode wrapped by the interceptor

factory - The variable factory

Returns:

The response code. Should return 0.