private Simple next(DataModelSource source) throws IOException {
DataModelReflection next = source.next();
if (next != null) {
return SIMPLE.toObject(next);
}
return null;
}
/**
* Creates a new instance.
*
* @param conf current configuration
* @param definition data type
* @param pathExpression the source path (can include wildcard)
* @throws IOException if failed to create instance
* @throws IllegalArgumentException if some parameters were {@code null}
*/
@SuppressWarnings("unchecked")
public TemporaryDataModelSource(
Configuration conf, DataModelDefinition<?> definition, String pathExpression)
throws IOException {
this.conf = conf;
this.definition = (DataModelDefinition<Object>) definition;
this.object = definition.toObject(definition.newReflection().build());
Path path = new Path(pathExpression);
this.fs = path.getFileSystem(conf);
FileStatus[] list = fs.globStatus(path);
List<Path> paths = new ArrayList<>();
for (int i = 0; i < list.length; i++) {
paths.add(list[i].getPath());
}
this.rest = paths.iterator();
}