org.jboss.portal.server.plugins.preferences
Interface MergeStrategy

All Known Implementing Classes:

SimpleMergeStrategy

public interface MergeStrategy

Merge several property set into one.

Method Summary

java.util.Set	getKeySet(PreferenceSet[] sets) Return the merged key set.
Preference	getPreference(PreferenceSet[] sets, java.lang.String key) Return a preference among the sets or null if no suitable preference is found.
boolean	isReadOnly(PreferenceSet[] sets, java.lang.String key) Say if the preference is marked as read only.

Method Detail

getPreference

Preference getPreference(PreferenceSet[] sets,
                         java.lang.String key)
                         throws java.lang.IllegalArgumentException

Return a preference among the sets or null if no suitable preference is found.

Parameters:

sets - the set of preference to inspect

key - the requested key

Returns:

the found preference or null

Throws:

java.lang.IllegalArgumentException - if the key or the sets is null

isReadOnly

boolean isReadOnly(PreferenceSet[] sets,
                   java.lang.String key)
                   throws java.lang.IllegalArgumentException

Say if the preference is marked as read only.

Parameters:

sets - the set of preference to inspect

key - the requested key

Returns:

the read only value

Throws:

java.lang.IllegalArgumentException - if the key or the sets is null

getKeySet

java.util.Set getKeySet(PreferenceSet[] sets)
                        throws java.lang.IllegalArgumentException

Return the merged key set.

Parameters:

sets - the set of preference to inspect

Returns:

the merged key set

Throws:

java.lang.IllegalArgumentException - if tje sets is null