private Version parseVersion(Unit unitReference) {
try {
return Version.parseVersion(unitReference.getVersion());
} catch (IllegalArgumentException e) {
throw new TargetDefinitionSyntaxException(
NLS.bind(
"Cannot parse version \"{0}\" of unit \"{1}\"",
unitReference.getVersion(), unitReference.getId()),
e);
}
}
private IInstallableUnit getUnitInstance(IQueryable<IInstallableUnit> units, Unit unitReference) {
IQueryResult<IInstallableUnit> queryResult = searchUnitInThisLocation(units, unitReference);
if (queryResult.isEmpty()) {
throw new TargetDefinitionResolutionException(
NLS.bind(
"Could not find \"{0}/{1}\" in the repositories of the current location",
unitReference.getId(), unitReference.getVersion()));
}
// if the repository contains the same iu/version twice, both are identical and
// it is OK to use either
IInstallableUnit unitInstance = queryResult.iterator().next();
return unitInstance;
}
private IQueryResult<IInstallableUnit> searchUnitInThisLocation(
IQueryable<IInstallableUnit> units, Unit unitReference) {
Version version = parseVersion(unitReference);
// the createIUQuery treats 0.0.0 version as "any version", and all other versions as exact
// versions
IQuery<IInstallableUnit> matchingIUQuery =
QueryUtil.createIUQuery(unitReference.getId(), version);
IQuery<IInstallableUnit> latestMatchingIUQuery = QueryUtil.createLatestQuery(matchingIUQuery);
IQueryResult<IInstallableUnit> queryResult = units.query(latestMatchingIUQuery, monitor);
return queryResult;
}