uima-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Richard Eckart de Castilho (JIRA)" <...@uima.apache.org>
Subject [jira] [Commented] (UIMA-5115) uv3 select() api for iterators and streams over CAS contents
Date Tue, 20 Sep 2016 19:38:20 GMT

    [ https://issues.apache.org/jira/browse/UIMA-5115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15507569#comment-15507569
] 

Richard Eckart de Castilho commented on UIMA-5115:
--------------------------------------------------

Well, Java needs to get the type information from somewhere. For signatures where some type
can be inferred from a parameter, that's nice. That surely works for `select(Token.class)`,
not sure about `select(Token.type)`. It certainly does not work for `select("my.Token")` unless
we use a signature where the type is inferred from the variable to which the result is assigned,
e.g. (I believe this works...)

{code}
<T extends FeatureStructure> List<T> select(String type);

List<Annotation> tokens = select("my.Token");
{code}

I am bit ambivalent about this type of signature though... it somehow seems to be more asking
for a ClassCastException than `select("my.Token", Annotation.class)` although I cannot really
articulate atm why.

> uv3 select() api for iterators and streams over CAS contents
> ------------------------------------------------------------
>
>                 Key: UIMA-5115
>                 URL: https://issues.apache.org/jira/browse/UIMA-5115
>             Project: UIMA
>          Issue Type: New Feature
>          Components: Core Java Framework
>            Reporter: Marshall Schor
>            Priority: Minor
>             Fix For: 3.0.0SDKexp
>
>
> Design and implement a select() API based on uimaFIT's select, integrated well with Java
8 concepts.  Initial discussions in UIMA-1524.  Wiki with diagram: https://cwiki.apache.org/confluence/display/UIMA/UV3+Iterator+support



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message