Can't Parse "mile" or "mi" to USCustomary.MILE

[Weizilla]

I'm trying to parse the string mile into USCustomary.MILE but I get a parse exception instead.

UnitFormat unitFormat = SimpleUnitFormat.getInstance();
Unit<Length> mileUnit = unitFormat.parse("mile").asType(Length.class);
System.out.println(mileUnit);

throws

javax.measure.format.ParserException: Parse Error
	at tec.uom.se.format.SimpleUnitFormat$DefaultFormat.check(SimpleUnitFormat.java:561)
	at tec.uom.se.format.SimpleUnitFormat$DefaultFormat.parseSingleUnit(SimpleUnitFormat.java:414)
	at tec.uom.se.format.SimpleUnitFormat$DefaultFormat.parseProductUnit(SimpleUnitFormat.java:425)
	at tec.uom.se.format.SimpleUnitFormat.parseObject(SimpleUnitFormat.java:269)
	at tec.uom.se.format.SimpleUnitFormat$DefaultFormat.parse(SimpleUnitFormat.java:765)
	at tec.uom.se.format.SimpleUnitFormat$DefaultFormat.parse(SimpleUnitFormat.java:760)
	at tec.uom.se.format.SimpleUnitFormat$DefaultFormat.parse(SimpleUnitFormat.java:751)

I tried parsing mi as well but I get the same error.

Is unit parsing not supported for miles? It works with meters. Or perhaps I'm using the wrong set of libraries?

This is my list of maven dependencies:

  <dependencies>
        <dependency>
            <groupId>javax.measure</groupId>
            <artifactId>unit-api</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>tec.uom</groupId>
            <artifactId>uom-se</artifactId>
            <version>1.0.2</version>
        </dependency>
        <dependency>
            <groupId>tec.uom.lib</groupId>
            <artifactId>uom-lib-common</artifactId>
            <version>1.0.1</version>
        </dependency>
        <dependency>
            <groupId>systems.uom</groupId>
            <artifactId>systems-common</artifactId>
            <version>0.5</version>
        </dependency>
        <dependency>
            <groupId>systems.uom</groupId>
            <artifactId>systems-quantity</artifactId>
            <version>0.5</version>
        </dependency>
        <dependency>
            <groupId>systems.uom</groupId>
            <artifactId>systems-common-java8</artifactId>
            <version>0.5</version>
        </dependency>
    </dependencies

Could it be related to #39? When I print USCustomary.MILE, I get m*201168.0/125.0 instead of mile so could it be I'm missing some resource?

[keilw]

It could be. Would it be possible to try 0.6-SNAPSHOT of systems-common-java8? You find the additional repositories for the snapshot builds in every parent POM like https://github.com/unitsofmeasurement/uom-systems/blob/master/pom.xml
Will have a look and test it after getting back to Germany. It may be fixed in the Snapshot version together with UOM-SE 1.0.2 already.

[Weizilla]

Using 0.6-SNAPSHOT prints mi and parses mi successfully but fails on parsing mile. Is there a way to parse mile too?

[keilw]

Yes, it's not an API element right now, but with alias() you can do, see

    SimpleUnitFormat.getInstance().alias(USCustomary.MILE, "mile");	    
    Unit u = SimpleUnitFormat.getInstance().parse("mile");

[keilw]

See https://github.com/unitsofmeasurement/uom-demos/blob/master/console/systems/common/src/main/java/tec/uom/demo/systems/common/CommonFormatDemo.java and its Java SE 8 equivalent.

[keilw]

Addressed in 0.6, will close. Plan to release 0.6 after a few more tests.