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SPRNET-1226

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Update docs to reflect the requirement for a non-null, non-empty string cache key.  Added guard clauses in the BaseCacheAttribute constructor to prevent passing null or empty string as the cache key argument.  Tests added to ensure guard clauses behave as expected.
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sbohlen
2010-09-22 17:48:41 +00:00
parent 55d0c40aa8
commit 70d2b5413f
3 changed files with 218 additions and 182 deletions
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16
doc/reference/src/aop-aspect-library.xml
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@@ -196,14 +196,14 @@ public <classname>Airport</classname> GetAirport(long id)
<para>The first parameter is the cache name. The second string parameter
is the cache key and is a string expression that incorporates the argument
passed into the method, the id. The method parameter names are exposed as
variables to the key expression. If you do not specify a key, then all the
parameter values will be used to cache the returned value. The expression
may also call out to other objects in the Spring container allowing for a
more complex key algorithm to be encapsulated. The end result is that the
Airport object is cached by id for 60 seconds in a cache named
AspNetCache. The TimetoLive property could also have been specified on the
configuration of the AspNetCache object.</para>
passed into the method, the id. The cache key value cannot be null or an
empty string (""). The method parameter names are exposed as variables to
the key expression. The expression may also call out to other objects in
the Spring container allowing for a more complex key algorithm to be
encapsulated. The end result is that the Airport object is cached by id
for 60 seconds in a cache named AspNetCache. The TimetoLive property could
also have been specified on the configuration of the AspNetCache
object.</para>
<para>The configuration to enable the caching aspect is shown below</para>