Scott Murphy Heiberg created GROOVY-12674:
---------------------------------------------
Summary: memoizeAtMost, memoizeAtLeast and memoizeBetween closures
cannot be serialized, unlike memoize closures
Key: GROOVY-12674
URL: https://issues.apache.org/jira/browse/GROOVY-12674
Project: Groovy
Issue Type: Bug
Affects Versions: 5.0.8, 4.0.33, 6.0.0, 7.0.0-alpha-1
Reporter: Scott Murphy Heiberg
{code:groovy}
def roundTrip(Closure c) {
def bytes = new ByteArrayOutputStream()
bytes.withObjectOutputStream { it.writeObject(c) }
new
ByteArrayInputStream(bytes.toByteArray()).withObjectInputStream(getClass().classLoader)
{ it.readObject() }
}
def base = { x -> x * 2 }.dehydrate()
assert roundTrip(base.memoize())(4) == 8 // works
roundTrip(base.memoizeAtMost(2)) // NotSerializableException:
org.codehaus.groovy.runtime.memoize.LRUCache
roundTrip(base.memoizeAtLeast(0)) // NotSerializableException:
org.codehaus.groovy.runtime.memoize.NullProtectionStorage
roundTrip(base.memoizeAtLeast(2)) // NotSerializableException:
java.lang.ref.ReferenceQueue
def between = base.memoizeBetween(1, 3)
between(1)
roundTrip(between) // NotSerializableException:
java.lang.ref.SoftReference
{code}
*Actual:* every variant except memoize() throws NotSerializableException,
whether or not it has been called.
*Expected:* they serialize like memoize() does and still memoize after
deserialization, with the same limits.
Cause: LRUCache is not Serializable. The soft reference variants hold a
ReferenceQueue, a NullProtectionStorage or LRUProtectionStorage, and
SoftReference cache values, none of which can be serialized.
Verified on 4.0.33, 5.0.8, 6.0.0 and master.
--
This message was sent by Atlassian Jira
(v10.3.26#10030026)
