/**
* Converts a given String to a Feature if the String type is not known in advance but the type of
* the feature is known. This is done by casting the given String to the given type. In general,
* this method should only be used in special cases where a feature type cannot be inferred from
* String type.
*
* @param name Name of the resulting Feature
* @param type Type of the resulting Feature
* @param s String to convert to a Feature
*/
public static Feature fromType(String name, int type, String s) {
FeatureType ftype = FeatureType.fromInt(type);
if (ftype == null) {
throw new IllegalArgumentException("Cannot construct a Feature " + "from this type.");
}
try {
switch (ftype) {
case INT:
return new Feature(name, Integer.parseInt(s));
case LONG:
return new Feature(name, Long.parseLong(s));
case FLOAT:
return new Feature(name, Float.parseFloat(s));
case DOUBLE:
return new Feature(name, Double.parseDouble(s));
case STRING:
return new Feature(name, s);
default:
throw new IllegalArgumentException("Could not instantiate " + "FeatureData");
}
} catch (NumberFormatException nfe) {
throw new IllegalArgumentException(
"Could not instantiate feature data. "
+ "Failed to convert the value to given type(s="
+ s
+ ", type="
+ ftype.toClass().getName()
+ ")");
} catch (Exception e) {
throw new IllegalArgumentException(
"Could not instantiate " + "FeatureData. Details - " + e.getMessage());
}
}
@Deserialize
public Feature(SerializationInputStream in) throws IOException, SerializationException {
setName(in.readString());
FeatureType type = FeatureType.fromInt(in.readInt());
data = Serializer.deserializeFromStream(type.toClass(), in);
}