Package uk.ac.starlink.task
Class URLParameter
- java.lang.Object
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- uk.ac.starlink.task.Parameter<java.net.URL>
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- uk.ac.starlink.task.URLParameter
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public class URLParameter extends Parameter<java.net.URL>
Parameter representing a URL value.- Since:
- 23 Feb 2011
- Author:
- Mark Taylor
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Constructor Summary
Constructors Constructor Description URLParameter(java.lang.String name)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.net.URL
stringToObject(Environment env, java.lang.String stringval)
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
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Method Detail
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stringToObject
public java.net.URL stringToObject(Environment env, java.lang.String stringval) 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<java.net.URL>
- Parameters:
env
- execution environment; in most cases this is not required but for some purposes environment-specific characteristics may influence the resultstringval
- non-null, non-empty string value- Returns:
- typed value
- Throws:
ParameterValueException
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