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Author:manus

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Date:2009-12-07T22:28:01.000000Z


git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@367 abb3cda0-5349-4a8f-a601-0c33ac3a8c38
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manus
2009-12-07 22:28:01 +00:00
parent 9999e50aec
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documentation/current/platform-specifics/microsoft-windows/net/eiffel-net-language/eiffel-net-integration.wiki
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@@ -24,7 +24,7 @@ The following syntax can be used to declare .NET custom attributes on Eiffel ent
empty: BOOLEAN
note
description: "Is Current empty?"
attribute: create {OBSOLETE_ATTRIBUTE}.make_obsoleteattribute_1 ("Use `is_empty' instead") end
metadata: create {OBSOLETE_ATTRIBUTE}.make_obsoleteattribute_1 ("Use `is_empty' instead") end
obsolete
"Use is_empty instead"
do
@@ -32,7 +32,14 @@ The following syntax can be used to declare .NET custom attributes on Eiffel ent
end
</code>
The previous example shows the declaration of the obsolete feature <code> empty </code> . The custom attribute defined by <code>OBSOLETE_ATTRIBUTE</code> is used to ensure that any consumer of the resulting assembly will see the feature as being obsolete. The custom attribute is defined in the <code>note</code> clause <code>attribute</code>. The definition consists of a creation expression that creates the custom attribute with the right parameters.
The previous example shows the declaration of the obsolete feature <code> empty </code> . The custom attribute defined by <code>OBSOLETE_ATTRIBUTE</code> is used to ensure that any consumer of the resulting assembly will see the feature as being obsolete. The custom attribute is defined in the <code>note</code> clause <code>metadata</code>. The definition consists of a creation expression that creates the custom attribute with the right parameters.
Using the <code>metadata</code> tag is the most general way of applying a custom attribute. There are however some variations that are explained below:
*<code>metada</code>: most general way, it applies a custom attribute to both the class and interface generated by the Eiffel compiler.
*<code>class_metadata</code>: applies only to the class generated by the Eiffel compiler (mostly for advanced users).
*<code>interface_metadata</code>: applies only to the interface generated by the Eiffel compiler (mostly for advanced users).
*<code>property_metadata</code>: applies a custom attribute to the associated property generated by the Eiffel compiler for a query.
*<code>assembly_metadata</code>: applies a custom attribute for the current assembly. It only works when present in the Eiffel system root class <code>note</code> clause.
==Differences between Eiffel for .NET and .NET==