org.hawkular.apm.api.internal.actions

Class ExpressionBasedActionHandler

java.lang.Object

org.hawkular.apm.api.internal.actions.ProcessorActionHandler

org.hawkular.apm.api.internal.actions.ExpressionBasedActionHandler

Direct Known Subclasses:

AddContentActionHandler, AddCorrelationIdActionHandler, SetPropertyActionHandler

public abstract class ExpressionBasedActionHandler
extends ProcessorActionHandler

Author:

gbrown

Constructor Summary

Constructors

Constructor and Description
ExpressionBasedActionHandler(ProcessorAction action) This constructor initialises the action.

Method Summary

Modifier and Type	Method and Description
protected String	getValue(Trace trace, Node node, Direction direction, Map<String,?> headers, Object[] values) This method returns the value, associated with the expression, for the supplied data.
List<ConfigMessage>	init(Processor processor) This method initialises the process action handler.

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

getAction, isUsesContent, isUsesHeaders, process, setAction, setUsesContent, setUsesHeaders

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionBasedActionHandler

public ExpressionBasedActionHandler(ProcessorAction action)

This constructor initialises the action.

Parameters:

action - The action

Method Detail

init

public List<ConfigMessage> init(Processor processor)

This method initialises the process action handler.

Overrides:

init in class ProcessorActionHandler

Parameters:

processor - The processor

getValue

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

This method returns the value, associated with the expression, for the supplied data.

Parameters:

trace - The trace

node - The node

direction - The direction

headers - The optional headers

values - The values

Returns:

The result of the expression