[jira] [Created] (FELIX-5399) Unable to define default map or list config types

[Pierre De Rop (JIRA)]

Pierre De Rop created FELIX-5399:
------------------------------------

             Summary: Unable to define default map or list config types
                 Key: FELIX-5399
                 URL: https://issues.apache.org/jira/browse/FELIX-5399
             Project: Felix
          Issue Type: Bug
          Components: Dependency Manager
    Affects Versions: org.apache.felix.dependencymanager-r8
            Reporter: Pierre De Rop
            Assignee: Pierre De Rop
            Priority: Minor
             Fix For: org.apache.felix.dependencymanager-r9


Assume you have a key in a given configuration dictionary which corresponds to 
a map or a list.
For example:

{code}
map={key1=value1, key2=value2}
list=[a,b,c}
{code}

Now assume we have the corresponding configuration type, which defines default 
values for the "map" or "list" keys:

{code}
    public interface ConfigType {
        public default List<String> getList() { 
                return Arrays.asList("default1", "default2");
        }

        public default SortedMap<String, String> getMap() { 
                SortedMap<String, String> defaultMap = new TreeMap<>();
                defaultMap.put("key1", "default1");
                defaultMap.put("key2", "default2");
                return defaultMap;
        }        
    }
{code}

Now, assume also that:

- you use an optional configurationdependency and the configuration is 
currently unavailable
- or the configuration is currently available (whatever the configuration 
dependency is optional or required), but there is currently no values for "map" 
or "list" keys

Then the problem is that the default map or list values declared in the 
ConfigType interface are not used as default values, but instead when you 
access to the "map" or "list" configuration keys, then you get an implicit 
empty map or an empty list (instead of the defaults values defined in the 
configuration type)

See org.apache.felix.dm.itest.api.DefaultListConfigType.java and 
org.apache.felix.dm.itest.api.DefaultMapConfigType, which reproduce the issue.




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