Package uk.ac.starlink.task
Class OutputStreamParameter
java.lang.Object
uk.ac.starlink.task.Parameter<uk.ac.starlink.util.Destination>
uk.ac.starlink.task.OutputStreamParameter
Parameter for selecting an output stream to write to.
- Since:
- 9 May 2006
- Author:
- Mark Taylor
-
Field Summary
-
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionuk.ac.starlink.util.Destination
stringToObject
(Environment env, String sval) Takes a non-blank string, as supplied by the execution environment, and turns it into a typed value for this parameter.Methods inherited from class uk.ac.starlink.task.Parameter
clearValue, getDescription, getName, getPosition, getPreferExplicit, getPrompt, getStringDefault, getUsage, getValueClass, isNullPermitted, objectToString, objectValue, setDescription, setDescription, setName, setNullPermitted, setPosition, setPreferExplicit, setPrompt, setStringDefault, setUsage, setValue, setValueFromObject, setValueFromString, stringValue, toArray, toString
-
Constructor Details
-
OutputStreamParameter
Constructor.- Parameters:
name
- parameter name
-
-
Method Details
-
stringToObject
public uk.ac.starlink.util.Destination stringToObject(Environment env, String sval) throws ParameterValueException Description copied from class:Parameter
Takes a non-blank string, as supplied by the execution environment, and turns it into a typed value for this parameter. This method also performs validation, so if the string value is unacceptable in any way, a ParameterValueException should be thrown.It is an error to supply a null or empty string value.
If this method fails (throws a ParameterValueException) and if
allowClassnameValue
is set, then a subsequent attempt will be made to interpret thestringVal
as the classname of a suitable class with a no-arg constructor.- Specified by:
stringToObject
in classParameter<uk.ac.starlink.util.Destination>
- Parameters:
env
- execution environment; in most cases this is not required but for some purposes environment-specific characteristics may influence the resultsval
- non-null, non-empty string value- Returns:
- typed value
- Throws:
ParameterValueException
-