org.dspace.content.authority
Class SampleAuthority

java.lang.Object
  extended by org.dspace.content.authority.SampleAuthority
All Implemented Interfaces:
ChoiceAuthority

public class SampleAuthority
extends Object
implements ChoiceAuthority

This is a *very* stupid test fixture for authority control, and also serves as a trivial example of an authority plugin implementation.


Constructor Summary
SampleAuthority()
           
 
Method Summary
 Choices getBestMatch(String text, int collection, String locale)
          Get the single "best" match (if any) of a value in the authority to the given user value.
 String getLabel(String key, String locale)
          Get the canonical user-visible "label" (i.e.
 Choices getMatches(String query, int collection, int start, int limit, String locale)
          Get all values from the authority that match the proferred value.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SampleAuthority

public SampleAuthority()
Method Detail

getMatches

public Choices getMatches(String query,
                          int collection,
                          int start,
                          int limit,
                          String locale)
Description copied from interface: ChoiceAuthority
Get all values from the authority that match the proferred value. Note that the offering was entered by the user and may contain mixed/incorrect case, whitespace, etc so the plugin should be careful to clean up user data before making comparisons. Value of a "Name" field will be in canonical DSpace person name format, which is "Lastname, Firstname(s)", e.g. "Smith, John Q.". Some authorities with a small set of values may simply return the whole set for any sample value, although it's a good idea to set the defaultSelected index in the Choices instance to the choice, if any, that matches the value.

Specified by:
getMatches in interface ChoiceAuthority
Parameters:
query - user's value to match
collection - database ID of Collection for context (owner of Item)
start - choice at which to start, 0 is first.
limit - maximum number of choices to return, 0 for no limit.
locale - explicit localization key if available, or null
Returns:
a Choices object (never null).

getBestMatch

public Choices getBestMatch(String text,
                            int collection,
                            String locale)
Description copied from interface: ChoiceAuthority
Get the single "best" match (if any) of a value in the authority to the given user value. The "confidence" element of Choices is expected to be set to a meaningful value about the circumstances of this match. This call is typically used in non-interactive metadata ingest where there is no interactive agent to choose from among options.

Specified by:
getBestMatch in interface ChoiceAuthority
Parameters:
text - user's value to match
collection - database ID of Collection for context (owner of Item)
locale - explicit localization key if available, or null
Returns:
a Choices object (never null) with 1 or 0 values.

getLabel

public String getLabel(String key,
                       String locale)
Description copied from interface: ChoiceAuthority
Get the canonical user-visible "label" (i.e. short descriptive text) for a key in the authority. Can be localized given the implicit or explicit locale specification. This may get called many times while populating a Web page so it should be implemented as efficiently as possible.

Specified by:
getLabel in interface ChoiceAuthority
Parameters:
key - authority key known to this authority.
locale - explicit localization key if available, or null
Returns:
descriptive label - should always return something, never null.


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