org.hawkular.apm.api.internal.actions

Class LiteralExpressionHandler

java.lang.Object

org.hawkular.apm.api.internal.actions.ExpressionHandler

org.hawkular.apm.api.internal.actions.LiteralExpressionHandler

public class LiteralExpressionHandler
extends ExpressionHandler

This class provides the XML expression handler implementation.

Author:

gbrown

Constructor Summary

Constructors

Constructor and Description
LiteralExpressionHandler(Expression expression)

Method Summary

Modifier and Type	Method and Description
String	evaluate(Trace trace, Node node, Direction direction, Map<String,?> headers, Object[] values) This method evaluates the supplied information against this expression.
void	init(Processor processor, ProcessorAction action, boolean predicate) This method initialises the expression handler.
boolean	test(Trace trace, Node node, Direction direction, Map<String,?> headers, Object[] values) This method evaluates the supplied information against this expression representing a predicate.

Methods inherited from class org.hawkular.apm.api.internal.actions.ExpressionHandler

getExpression, getIssues, isUsesContent, isUsesHeaders, setExpression, setIssues

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LiteralExpressionHandler

public LiteralExpressionHandler(Expression expression)

Parameters:

expression -

Method Detail

init

public void init(Processor processor,
                 ProcessorAction action,
                 boolean predicate)

Description copied from class: ExpressionHandler

This method initialises the expression handler.

Specified by:

init in class ExpressionHandler

Parameters:

processor - The processor

action - The action

predicate - Whether the expression is a predicate

test

public boolean test(Trace trace,
                    Node node,
                    Direction direction,
                    Map<String,?> headers,
                    Object[] values)

Description copied from class: ExpressionHandler

This method evaluates the supplied information against this expression representing a predicate.

Specified by:

test in class ExpressionHandler

Parameters:

trace - The trace

node - The node

direction - The direction

headers - The optional headers

values - The values

Returns:

The predicate result

evaluate

public String evaluate(Trace trace,
                       Node node,
                       Direction direction,
                       Map<String,?> headers,
                       Object[] values)

Description copied from class: ExpressionHandler

This method evaluates the supplied information against this expression.

Specified by:

evaluate in class ExpressionHandler

Parameters:

trace - The trace

node - The node

direction - The direction

headers - The optional headers

values - The values

Returns:

The evaluated result