[jboss-jira] [JBoss JIRA] Commented: (JGRP-1068) Add programmer assigned default processing to @Property annotations

OK, here are my thoughts on how this could work: Let's take mcast_addr as an example: @Property(dependsUpon="mcast_port", defaultIPv4="224.5.6.7", defaultIPv6="::FF88",converter=IpAddressConverter.class) private IpAddress mcast_addr; Here's what happens: * 1st round: Property processing: all user defined values from the XML or system properties are set, using the converter

* 2nd round (sanity checking and determination of IP type): iterate through all protocols and o for each field F which has a @Property annotation and is an InetAddress or IpAddress: + record the type of the address (IPv4 or IPv6) o At the end of the processing, check whether all addresses have the same type, taking into account the addresses above plus system props like net.preferIPv4Stack o We now have a type for all addresses: IPv4 or IPv6. If this is not the case, thow an exception and terminate * 3rd round: we iterate through all the protocols and o for each field F which has a @Property annotation and is an IpAddress or InetAddress (or list of those): + If the field's value is null: # If there is a default address set in @Property, grab the right type and set it The 2nd and 3rd round are squeezed between property processing and init(). This can be done in ProtocolStack.setup() or possibly in Configurator.

Add programmer assigned default processing to @Property annotations ------------------------------------------------------------------- Key: JGRP-1068 URL: https://jira.jboss.org/jira/browse/JGRP-1068 Project: JGroups Issue Type: Feature Request Affects Versions: 2.8 Reporter: Richard Achmatowicz Assignee: Richard Achmatowicz Priority: Minor Fix For: 2.8 There is a need to handle in a systematic way the assignment of programmer assigned defaults to properties in JGroups. THis issue concerns incorporating the assignment of progranmmer assigned defaults using the existing @Property mechanism. The following comments explain the issue.