Class StringArgument

  • All Implemented Interfaces:
    java.io.Serializable

    @Mutable
    @ThreadSafety(level=NOT_THREADSAFE)
    public final class StringArgument
    extends Argument
    This class defines an argument that is intended to hold one or more string values. String arguments must take values. By default, any value will be allowed, but it is possible to restrict the set of values so that only values from a specified set (ignoring differences in capitalization) will be allowed.
    See Also:
    Serialized Form
    • Constructor Summary

      Constructors 
      Constructor Description
      StringArgument​(java.lang.Character shortIdentifier, java.lang.String longIdentifier, boolean isRequired, int maxOccurrences, java.lang.String valuePlaceholder, java.lang.String description)
      Creates a new string argument with the provided information.
      StringArgument​(java.lang.Character shortIdentifier, java.lang.String longIdentifier, boolean isRequired, int maxOccurrences, java.lang.String valuePlaceholder, java.lang.String description, java.lang.String defaultValue)
      Creates a new string argument with the provided information.
      StringArgument​(java.lang.Character shortIdentifier, java.lang.String longIdentifier, boolean isRequired, int maxOccurrences, java.lang.String valuePlaceholder, java.lang.String description, java.util.List<java.lang.String> defaultValues)
      Creates a new string argument with the provided information.
      StringArgument​(java.lang.Character shortIdentifier, java.lang.String longIdentifier, boolean isRequired, int maxOccurrences, java.lang.String valuePlaceholder, java.lang.String description, java.util.Set<java.lang.String> allowedValues)
      Creates a new string argument with the provided information.
      StringArgument​(java.lang.Character shortIdentifier, java.lang.String longIdentifier, boolean isRequired, int maxOccurrences, java.lang.String valuePlaceholder, java.lang.String description, java.util.Set<java.lang.String> allowedValues, java.lang.String defaultValue)
      Creates a new string argument with the provided information.
      StringArgument​(java.lang.Character shortIdentifier, java.lang.String longIdentifier, boolean isRequired, int maxOccurrences, java.lang.String valuePlaceholder, java.lang.String description, java.util.Set<java.lang.String> allowedValues, java.util.List<java.lang.String> defaultValues)
      Creates a new string argument with the provided information.
      StringArgument​(java.lang.Character shortIdentifier, java.lang.String longIdentifier, java.lang.String description)
      Creates a new string argument with the provided information.
    • Constructor Detail

      • StringArgument

        public StringArgument​(java.lang.Character shortIdentifier,
                              java.lang.String longIdentifier,
                              java.lang.String description)
                       throws ArgumentException
        Creates a new string argument with the provided information. It will not be required, will permit at most one value, will use a default placeholder, will not have any default value, and will not place any restriction on values that may be assigned.
        Parameters:
        shortIdentifier - The short identifier for this argument. It may not be null if the long identifier is null.
        longIdentifier - The long identifier for this argument. It may not be null if the short identifier is null.
        description - A human-readable description for this argument. It must not be null.
        Throws:
        ArgumentException - If there is a problem with the definition of this argument.
      • StringArgument

        public StringArgument​(java.lang.Character shortIdentifier,
                              java.lang.String longIdentifier,
                              boolean isRequired,
                              int maxOccurrences,
                              java.lang.String valuePlaceholder,
                              java.lang.String description)
                       throws ArgumentException
        Creates a new string argument with the provided information. There will not be any default values, nor will there be any restriction on values that may be assigned to this argument.
        Parameters:
        shortIdentifier - The short identifier for this argument. It may not be null if the long identifier is null.
        longIdentifier - The long identifier for this argument. It may not be null if the short identifier is null.
        isRequired - Indicates whether this argument is required to be provided.
        maxOccurrences - The maximum number of times this argument may be provided on the command line. A value less than or equal to zero indicates that it may be present any number of times.
        valuePlaceholder - A placeholder to display in usage information to indicate that a value must be provided. It may be null if a default placeholder should be used.
        description - A human-readable description for this argument. It must not be null.
        Throws:
        ArgumentException - If there is a problem with the definition of this argument.
      • StringArgument

        public StringArgument​(java.lang.Character shortIdentifier,
                              java.lang.String longIdentifier,
                              boolean isRequired,
                              int maxOccurrences,
                              java.lang.String valuePlaceholder,
                              java.lang.String description,
                              java.util.Set<java.lang.String> allowedValues)
                       throws ArgumentException
        Creates a new string argument with the provided information. There will not be any default values.
        Parameters:
        shortIdentifier - The short identifier for this argument. It may not be null if the long identifier is null.
        longIdentifier - The long identifier for this argument. It may not be null if the short identifier is null.
        isRequired - Indicates whether this argument is required to be provided.
        maxOccurrences - The maximum number of times this argument may be provided on the command line. A value less than or equal to zero indicates that it may be present any number of times.
        valuePlaceholder - A placeholder to display in usage information to indicate that a value must be provided. It may be null if a default placeholder should be used.
        description - A human-readable description for this argument. It must not be null.
        allowedValues - The set of allowed values for this argument, or null if it should not be restricted.
        Throws:
        ArgumentException - If there is a problem with the definition of this argument.
      • StringArgument

        public StringArgument​(java.lang.Character shortIdentifier,
                              java.lang.String longIdentifier,
                              boolean isRequired,
                              int maxOccurrences,
                              java.lang.String valuePlaceholder,
                              java.lang.String description,
                              java.lang.String defaultValue)
                       throws ArgumentException
        Creates a new string argument with the provided information. There will not be any restriction on values that may be assigned to this argument.
        Parameters:
        shortIdentifier - The short identifier for this argument. It may not be null if the long identifier is null.
        longIdentifier - The long identifier for this argument. It may not be null if the short identifier is null.
        isRequired - Indicates whether this argument is required to be provided.
        maxOccurrences - The maximum number of times this argument may be provided on the command line. A value less than or equal to zero indicates that it may be present any number of times.
        valuePlaceholder - A placeholder to display in usage information to indicate that a value must be provided. It may be null if a default placeholder should be used.
        description - A human-readable description for this argument. It must not be null.
        defaultValue - The default value that will be used for this argument if no values are provided. It may be null if there should not be a default value.
        Throws:
        ArgumentException - If there is a problem with the definition of this argument.
      • StringArgument

        public StringArgument​(java.lang.Character shortIdentifier,
                              java.lang.String longIdentifier,
                              boolean isRequired,
                              int maxOccurrences,
                              java.lang.String valuePlaceholder,
                              java.lang.String description,
                              java.util.List<java.lang.String> defaultValues)
                       throws ArgumentException
        Creates a new string argument with the provided information. There will not be any restriction on values that may be assigned to this argument.
        Parameters:
        shortIdentifier - The short identifier for this argument. It may not be null if the long identifier is null.
        longIdentifier - The long identifier for this argument. It may not be null if the short identifier is null.
        isRequired - Indicates whether this argument is required to be provided.
        maxOccurrences - The maximum number of times this argument may be provided on the command line. A value less than or equal to zero indicates that it may be present any number of times.
        valuePlaceholder - A placeholder to display in usage information to indicate that a value must be provided. It may be null if a default placeholder should be used.
        description - A human-readable description for this argument. It must not be null.
        defaultValues - The set of default values that will be used for this argument if no values are provided.
        Throws:
        ArgumentException - If there is a problem with the definition of this argument.
      • StringArgument

        public StringArgument​(java.lang.Character shortIdentifier,
                              java.lang.String longIdentifier,
                              boolean isRequired,
                              int maxOccurrences,
                              java.lang.String valuePlaceholder,
                              java.lang.String description,
                              java.util.Set<java.lang.String> allowedValues,
                              java.lang.String defaultValue)
                       throws ArgumentException
        Creates a new string argument with the provided information.
        Parameters:
        shortIdentifier - The short identifier for this argument. It may not be null if the long identifier is null.
        longIdentifier - The long identifier for this argument. It may not be null if the short identifier is null.
        isRequired - Indicates whether this argument is required to be provided.
        maxOccurrences - The maximum number of times this argument may be provided on the command line. A value less than or equal to zero indicates that it may be present any number of times.
        valuePlaceholder - A placeholder to display in usage information to indicate that a value must be provided. It may be null if a default placeholder should be used.
        description - A human-readable description for this argument. It must not be null.
        allowedValues - The set of allowed values for this argument, or null if it should not be restricted.
        defaultValue - The default value that will be used for this argument if no values are provided. It may be null if there should not be a default value.
        Throws:
        ArgumentException - If there is a problem with the definition of this argument.
      • StringArgument

        public StringArgument​(java.lang.Character shortIdentifier,
                              java.lang.String longIdentifier,
                              boolean isRequired,
                              int maxOccurrences,
                              java.lang.String valuePlaceholder,
                              java.lang.String description,
                              java.util.Set<java.lang.String> allowedValues,
                              java.util.List<java.lang.String> defaultValues)
                       throws ArgumentException
        Creates a new string argument with the provided information.
        Parameters:
        shortIdentifier - The short identifier for this argument. It may not be null if the long identifier is null.
        longIdentifier - The long identifier for this argument. It may not be null if the short identifier is null.
        isRequired - Indicates whether this argument is required to be provided.
        maxOccurrences - The maximum number of times this argument may be provided on the command line. A value less than or equal to zero indicates that it may be present any number of times.
        valuePlaceholder - A placeholder to display in usage information to indicate that a value must be provided. It may be null if a default placeholder should be used.
        description - A human-readable description for this argument. It must not be null.
        allowedValues - The set of allowed values for this argument, or null if it should not be restricted.
        defaultValues - The set of default values that will be used for this argument if no values are provided.
        Throws:
        ArgumentException - If there is a problem with the definition of this argument.
    • Method Detail

      • getAllowedValues

        public java.util.Set<java.lang.String> getAllowedValues()
        Retrieves the set of allowed values for this argument, if applicable.
        Returns:
        The set of allowed values for this argument, or null if there is no restriction on the allowed values.
      • getDefaultValues

        public java.util.List<java.lang.String> getDefaultValues()
        Retrieves the list of default values for this argument, which will be used if no values were provided.
        Returns:
        The list of default values for this argument, or null if there are no default values.
      • getValueRegex

        public java.util.regex.Pattern getValueRegex()
        Retrieves the regular expression that values of this argument will be required to match, if any.
        Returns:
        The regular expression that values of this argument will be required to match, or null if none is defined.
      • getValueRegexExplanation

        public java.lang.String getValueRegexExplanation()
        Retrieves a human-readable explanation of the regular expression pattern that may be required to match any provided values, if any.
        Returns:
        A human-readable explanation of the regular expression pattern, or null if none is available.
      • setValueRegex

        public void setValueRegex​(java.util.regex.Pattern valueRegex,
                                  java.lang.String explanation)
        Specifies the regular expression that values of this argument will be required to match, if any.
        Parameters:
        valueRegex - The regular expression that values of this argument will be required to match. It may be null if no pattern matching should be required.
        explanation - A human-readable explanation for the pattern which may be used to clarify the kinds of values that are acceptable. It may be null if no pattern matching should be required, or if the regular expression pattern should be sufficiently clear for the target audience.
      • addValueValidator

        public void addValueValidator​(ArgumentValueValidator validator)
        Updates this argument to ensure that the provided validator will be invoked for any values provided to this argument. This validator will be invoked after all other validation has been performed for this argument.
        Parameters:
        validator - The argument value validator to be invoked. It must not be null.
      • addValue

        protected void addValue​(java.lang.String valueString)
                         throws ArgumentException
        Adds the provided value to the set of values for this argument. This method should only be called by the argument parser.
        Specified by:
        addValue in class Argument
        Parameters:
        valueString - The string representation of the value.
        Throws:
        ArgumentException - If the provided value is not acceptable, if this argument does not accept values, or if this argument already has the maximum allowed number of values.
      • getValue

        public java.lang.String getValue()
        Retrieves the value for this argument, or the default value if none was provided. If this argument has multiple values, then the first will be returned.
        Returns:
        The value for this argument, or the default value if none was provided, or null if it does not have any values or default values.
      • getValues

        public java.util.List<java.lang.String> getValues()
        Retrieves the set of values for this argument, or the default values if none were provided.
        Returns:
        The set of values for this argument, or the default values if none were provided.
      • getValueStringRepresentations

        public java.util.List<java.lang.String> getValueStringRepresentations​(boolean useDefault)
        Retrieves a list containing the string representations of the values for this argument, if any. The list returned does not necessarily need to include values that will be acceptable to the argument, but it should imply what the values are (e.g., in the case of a boolean argument that doesn't take a value, it may be the string "true" or "false" even if those values are not acceptable to the argument itself).
        Specified by:
        getValueStringRepresentations in class Argument
        Parameters:
        useDefault - Indicates whether to use any configured default value if the argument doesn't have a user-specified value.
        Returns:
        A string representation of the value for this argument, or an empty list if the argument does not have a value.
      • hasDefaultValue

        protected boolean hasDefaultValue()
        Indicates whether this argument has one or more default values that will be used if it is not provided on the command line.
        Specified by:
        hasDefaultValue in class Argument
        Returns:
        true if this argument has one or more default values, or false if not.
      • getDataTypeName

        public java.lang.String getDataTypeName()
        Retrieves a concise name of the data type with which this argument is associated.
        Specified by:
        getDataTypeName in class Argument
        Returns:
        A concise name of the data type with which this argument is associated.
      • getValueConstraints

        public java.lang.String getValueConstraints()
        Retrieves a human-readable string with information about any constraints that may be imposed for values of this argument.
        Overrides:
        getValueConstraints in class Argument
        Returns:
        A human-readable string with information about any constraints that may be imposed for values of this argument, or null if there are none.
      • reset

        protected void reset()
        Resets this argument so that it appears in the same form as before it was used to parse arguments. Subclasses that override this method must call super.reset() to ensure that all necessary reset processing is performed.
        Overrides:
        reset in class Argument
      • getCleanCopy

        public StringArgument getCleanCopy()
        Creates a copy of this argument that is "clean" and appears as if it has not been used in the course of parsing an argument set. The new argument will have all of the same identifiers and constraints as this parser.
        Specified by:
        getCleanCopy in class Argument
        Returns:
        The "clean" copy of this argument.
      • addToCommandLine

        protected void addToCommandLine​(java.util.List<java.lang.String> argStrings)
        Updates the provided list to add any strings that should be included on the command line in order to represent this argument's current state.
        Specified by:
        addToCommandLine in class Argument
        Parameters:
        argStrings - The list to update with the string representation of the command-line arguments.
      • toString

        public void toString​(java.lang.StringBuilder buffer)
        Appends a string representation of this argument to the provided buffer.
        Specified by:
        toString in class Argument
        Parameters:
        buffer - The buffer to which the information should be appended.