com.orchestranetworks.schema

Interface TableRefDisplay

public interface TableRefDisplay

Defines a custom renderer for displaying a foreign key constraint depending on the context of a node.

For example, a data model contains the following:

 <xs:annotation>
                <xs:appinfo>
                        <osd:otherFacets>
                         <osd:tableRef>
                                <tablePath>../catalog</tablePath>
                                <display osd:class="com.foo.CatalogRenderer">
                                        <param1>...</param1>
                                        <param2>...</param2>
                                </display>
                         </osd:tableRef>
                        </osd:otherFacets>
                </xs:appinfo>
</xs:annotation>
 

where com.foo.CatalogRenderer is the fully qualified name of the class that implement this interface.

The declaration may use parameters, param1 and param2 in the example, which are are JavaBean properties of the com.foo.CatalogRenderer class.

For more information, see the JavaBean specification.

Life cycle

1. When the data model is loaded:
   1. the specified class is instantiated through its default constructor and its JavaBean property setters are called (in the example above, the setter methods would be setParam1(...) and setParam2(...));
   2. the method setup(TableRefDisplayContext) is called on the new instance.
2. During the operational phase: the method displayOccurrence(Adaptation, Locale) is called each time an associated element is to be displayed.

Method Summary

Modifier and Type	Method and Description
String	displayOccurrence(Adaptation aRecord, Locale aLocale) Returns an end-user label for the specified record.
void	setup(TableRefDisplayContext aContext) This method is called when the data model is loaded, to check and prepare this instance.

Method Detail

setup

void setup(TableRefDisplayContext aContext)

This method is called when the data model is loaded, to check and prepare this instance.

This method can also declare a specific sort criteria.

displayOccurrence

String displayOccurrence(Adaptation aRecord,
                         Locale aLocale)
                  throws InvalidSchemaException

Returns an end-user label for the specified record.

Internationalization strategy

This method returns null if the specified locale is not handled by the current implementation. The container tries several locales when handling a partial internationalization of this method's implementation and/or a mismatch between the locales declared by the associated module and the locales supported by EBX®. In such cases, locales are tried in the following order:

1. User's preferred locale for the data model (see Session.getLocaleForSchemaNode(SchemaNode));
2. Session's current locale;
3. Default locale declared in the file module.xml;

Multi-threading

For a single instance of this interface, this method may be called concurrently by several threads.

Parameters:

aRecord - The record to be displayed, never null.

aLocale - The current locale, never null. see Internationalization strategy above.

Throws:

InvalidSchemaException - if a dynamic condition in the data model prevents the execution of this method.