Spring/spring-session-data-geode
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Change the specification and interface contract for SessionExpirationPolicy.expireAfter(:Session):Duration to allow null return values.

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A null return value will signal GemFire/Geode to use the default Region Entry Idle Timeout (TTI) Expiration Policy configured for the Sessions Region.

Resolves gh-5.
This commit is contained in:
John Blum
2018-10-23 14:21:26 -07:00
parent bff54fa08a
commit 03f7c2f9b5
1 changed files with 11 additions and 4 deletions
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15
spring-session-data-geode/src/main/java/org/springframework/session/data/gemfire/expiration/SessionExpirationPolicy.java
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@@ -18,7 +18,9 @@ package org.springframework.session.data.gemfire.expiration;
import java.time.Duration;
import org.springframework.lang.NonNull;
import org.apache.geode.cache.Region;
import org.springframework.lang.Nullable;
import org.springframework.session.Session;
/**
@@ -42,12 +44,18 @@ public interface SessionExpirationPolicy {
/**
* Defines the {@link Duration length of time} until the given {@link Session} will expire.
*
* @param session {@link Session} to evaluate.
* May return {@literal null}, which indicates to Apache Geode or Pivotal GemFire that it should default to
* the configured Idle Timeout (TTI) Expiration Policy for the {@link Session} {@link Region} to determine when
* the {@link Session} will expire.
*
* @param session {@link Session} to evaluate. A {@link Session} object is required.
* @return a {@link Duration} specifying the length of time until the {@link Session} will expire.
* May return {@literal null} to indicate that the default, configured Idle Timeout (TTI) Expiration Policy
* for the {@link Session} {@link Region} should be used to determine when the {@link Session} will expire.
* @see org.springframework.session.Session
* @see java.time.Duration
*/
@NonNull
@Nullable
Duration expireAfter(Session session);
/**
@@ -73,6 +81,5 @@ public interface SessionExpirationPolicy {
public static ExpirationAction defaultIfNull(ExpirationAction expirationAction) {
return expirationAction != null ? expirationAction : INVALIDATE;
}
}
}