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https://issues.apache.org/jira/browse/RYA-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16193579#comment-16193579
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ASF GitHub Bot commented on RYA-392:
------------------------------------

Github user jdasch commented on a diff in the pull request:

    https://github.com/apache/incubator-rya/pull/237#discussion_r143046217
  
    --- Diff: common/rya.api/pom.xml ---
    @@ -95,5 +95,20 @@ under the License.
                 <scope>test</scope>
             </dependency>
         </dependencies>
    +    <build>
    +        <plugins>
    +            <plugin>
    +                <groupId>org.apache.rat</groupId>
    +                <artifactId>apache-rat-plugin</artifactId>
    +                <configuration>
    +                    <excludes>
    +                        <!-- Trivial listing of classes to be loaded via 
    +                            SPI -->
    +                        
<exclude>src/main/resources/META-INF/services/org.openrdf.query.algebra.evaluation.function.Function</exclude>
    --- End diff --
    
    Remove this.  Add the license to the service loader.  # is the comment 
character
    http://docs.oracle.com/javase/7/docs/api/java/util/ServiceLoader.html


> Temporal Difference Function
> ----------------------------
>
>                 Key: RYA-392
>                 URL: https://issues.apache.org/jira/browse/RYA-392
>             Project: Rya
>          Issue Type: New Feature
>    Affects Versions: 3.2.11
>            Reporter: Caleb Meier
>            Assignee: Caleb Meier
>
> Currently Rya does not provide a Function that determines whether two 
> temporal literals are within a given period of time of one another.  This is 
> extremely useful for filtering on query results that occurred within a fixed 
> period of time of a given instant.  Currently, if one attempts to form the 
> following filter Filter(?time1 - ?time2 < "24"^^xsd:hour), an exception will 
> be thrown if ?time1 and ?time2 are date time literals.  I propose 
> implementing a Function that takes in two temporal literals, an integer and a 
> time unit and determines whether the date times are within the prescribed 
> period of one another.



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