Merge multiple lists/maps/sets that share the same id into a single map/list [SPR-5892]

[spring-projects-issues]

Donny A. Wijaya opened SPR-5892 and commented

Add ability to merge multiple lists/maps/sets that share the same id into a map/list (through the use of flag).

Some frameworks require developers to provide a list of mapping location (inside classpath). This would not be a problem if everything is bundled in a war. But in modular deployment, we usually have the mapping files to be packaged inside jars where they belong. This new improvement would remove the responsibility to add every mapping file located in every new jar we deploy, into the the a mapping list resides in the main context file of the application.

For example:

JAR_A has a collectionContext.xml with a map/list with id "myList"
JAR_B has a collectionContext.xml with a map/list with id "myList"
WAR has an applicationContext.xml that imports classpath*:**/collectionContext.xml

This feature would allow the two maps to be merged into a map with id "myList".

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Issue Links:

• Introduce 'merge' attribute for util namespace collection elements [SPR-6523] #11189 Introduce 'merge' attribute for util namespace collection elements ("Cloned to")

[spring-projects-issues]

Chris Beams commented

Duplicates #11189