org.springframework.xd.analytics.metrics.integration

Class FieldValueCounterHandler

java.lang.Object

org.springframework.xd.analytics.metrics.integration.FieldValueCounterHandler

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.InitializingBean

public class FieldValueCounterHandler
extends java.lang.Object

Counts the occurrence of values for a set of JavaBean properties or Tuple fields using a FieldValueCounterRepository. Assumes a String payload is JSON and will convert it to a Tuple.

Author:

Mark Pollack, David Turanski, Mark Fisher

Field Summary

Fields

Modifier and Type	Field and Description
protected org.springframework.expression.EvaluationContext	evaluationContext
protected org.springframework.expression.Expression	nameExpression
protected org.springframework.expression.spel.standard.SpelExpressionParser	spelExpressionParser

Constructor Summary

Constructors

Constructor and Description
FieldValueCounterHandler(FieldValueCounterRepository fieldValueCounterRepository, java.lang.String nameExpression, java.lang.String fieldName)

Method Summary

Methods

Modifier and Type	Method and Description
void	afterPropertiesSet()
protected java.lang.String	computeMetricName(org.springframework.messaging.Message<?> message)
org.springframework.messaging.Message<?>	process(org.springframework.messaging.Message<?> message)
protected void	processValue(java.lang.String counterName, java.lang.Object value)
void	setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
void	setIntegrationEvaluationContext(org.springframework.expression.EvaluationContext evaluationContext)

Methods inherited from class java.lang.Object

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

Field Detail

nameExpression

protected final org.springframework.expression.Expression nameExpression

spelExpressionParser

protected final org.springframework.expression.spel.standard.SpelExpressionParser spelExpressionParser

evaluationContext

protected org.springframework.expression.EvaluationContext evaluationContext

Constructor Detail

FieldValueCounterHandler

public FieldValueCounterHandler(FieldValueCounterRepository fieldValueCounterRepository,
                        java.lang.String nameExpression,
                        java.lang.String fieldName)

Method Detail

process

@ServiceActivator
public org.springframework.messaging.Message<?> process(org.springframework.messaging.Message<?> message)

processValue

protected void processValue(java.lang.String counterName,
                java.lang.Object value)

computeMetricName

protected java.lang.String computeMetricName(org.springframework.messaging.Message<?> message)

setIntegrationEvaluationContext

public void setIntegrationEvaluationContext(org.springframework.expression.EvaluationContext evaluationContext)

setBeanFactory

public void setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
                    throws org.springframework.beans.BeansException

Specified by:

setBeanFactory in interface org.springframework.beans.factory.BeanFactoryAware

Throws:

org.springframework.beans.BeansException

afterPropertiesSet

public void afterPropertiesSet()
                        throws java.lang.Exception

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean

Throws:

java.lang.Exception