org.springframework.retry.policy

Class ExpressionRetryPolicy

java.lang.Object

org.springframework.retry.policy.SimpleRetryPolicy

org.springframework.retry.policy.ExpressionRetryPolicy

All Implemented Interfaces:

Serializable, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, RetryPolicy

public class ExpressionRetryPolicy
extends SimpleRetryPolicy
implements org.springframework.beans.factory.BeanFactoryAware

Subclass of SimpleRetryPolicy that delegates to super.canRetry() and, if true, further evaluates an expression against the last thrown exception.

Since:

1.2

Author:

Gary Russell, Aldo Sinanaj

See Also:

Serialized Form

Field Summary

Fields inherited from class org.springframework.retry.policy.SimpleRetryPolicy

DEFAULT_MAX_ATTEMPTS

Constructor Summary

Constructors

Constructor and Description
ExpressionRetryPolicy(org.springframework.expression.Expression expression) Construct an instance with the provided Expression.
ExpressionRetryPolicy(int maxAttempts, Map<Class<? extends Throwable>,Boolean> retryableExceptions, boolean traverseCauses, org.springframework.expression.Expression expression) Construct an instance with the provided Expression.
ExpressionRetryPolicy(int maxAttempts, Map<Class<? extends Throwable>,Boolean> retryableExceptions, boolean traverseCauses, String expressionString, boolean defaultValue) Construct an instance with the provided expression.
ExpressionRetryPolicy(String expressionString) Construct an instance with the provided expression.

Method Summary

Modifier and Type	Method and Description
boolean	canRetry(RetryContext context) Test for retryable operation based on the status.
static boolean	isTemplate(String expression) Check if the expression is a template
void	setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
ExpressionRetryPolicy	withBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)

Methods inherited from class org.springframework.retry.policy.SimpleRetryPolicy

close, getMaxAttempts, open, registerThrowable, setMaxAttempts, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionRetryPolicy

public ExpressionRetryPolicy(org.springframework.expression.Expression expression)

Construct an instance with the provided Expression.

Parameters:

expression - the expression

ExpressionRetryPolicy

public ExpressionRetryPolicy(String expressionString)

Construct an instance with the provided expression.

Parameters:

expressionString - the expression.

ExpressionRetryPolicy

public ExpressionRetryPolicy(int maxAttempts,
                             Map<Class<? extends Throwable>,Boolean> retryableExceptions,
                             boolean traverseCauses,
                             org.springframework.expression.Expression expression)

Construct an instance with the provided Expression.

Parameters:

maxAttempts - the max attempts

retryableExceptions - the exceptions

traverseCauses - true to examine causes

expression - the expression

ExpressionRetryPolicy

public ExpressionRetryPolicy(int maxAttempts,
                             Map<Class<? extends Throwable>,Boolean> retryableExceptions,
                             boolean traverseCauses,
                             String expressionString,
                             boolean defaultValue)

Construct an instance with the provided expression.

Parameters:

maxAttempts - the max attempts

retryableExceptions - the exceptions

traverseCauses - true to examine causes

expressionString - the expression.

defaultValue - the default action

Method Detail

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

withBeanFactory

public ExpressionRetryPolicy withBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)

canRetry

public boolean canRetry(RetryContext context)

Description copied from class: SimpleRetryPolicy

Test for retryable operation based on the status.

Specified by:

canRetry in interface RetryPolicy

Overrides:

canRetry in class SimpleRetryPolicy

Parameters:

context - the current retry status

Returns:

true if the last exception was retryable and the number of attempts so far is less than the limit.

See Also:

RetryPolicy.canRetry(org.springframework.retry.RetryContext)

isTemplate

public static boolean isTemplate(String expression)

Check if the expression is a template

Parameters:

expression - the expression string

Returns:

true if the expression string is a template