Argument (Vert.x Stack - Docs 4.2.7 API)

java.lang.Object
- io.vertx.core.cli.Argument

Direct Known Subclasses:

TypedArgument
```
public class Argument
extends Object
```
Defines a command line argument. Unlike options, argument don't have names and are identified using an index. The first index is 0 (because we are in the computer world).

Author:

Clement Escoffier

See Also:

Option

Field Summary

Fields
Modifier and Type	Field and Description
`protected String`	`argName` The argument name used in the usage.
`static String`	`DEFAULT_ARG_NAME` The default argument name displayed in the usage.
`protected String`	`defaultValue` The optional default value of this argument.
`protected String`	`description` The argument description.
`protected boolean`	`hidden` Whether or not this argument is hidden.
`protected int`	`index` The argument index.
`protected boolean`	`multiValued` Whether or not this argument can receive multiple value.
`protected boolean`	`required` Whether or not this argument is mandatory.

Constructor Summary

Constructors
Constructor and Description
`Argument()` Creates a new empty instance of `Argument`.
`Argument(Argument other)` Creates a new instance of `Argument` by copying `other`.
`Argument(JsonObject json)` Creates a new instance of `Argument` from the given JSON object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`ensureValidity()` Checks that the argument configuration is valid.
`String`	`getArgName()`
`String`	`getDefaultValue()`
`String`	`getDescription()`
`int`	`getIndex()`
`boolean`	`isHidden()`
`boolean`	`isMultiValued()`
`boolean`	`isRequired()`
`Argument`	`setArgName(String argName)` Sets the argument name of this `Argument`.
`Argument`	`setDefaultValue(String defaultValue)` Sets the default value of this `Argument`.
`Argument`	`setDescription(String description)` Sets the description of the `Argument`.
`Argument`	`setHidden(boolean hidden)` Sets whether or not the current `Argument` is hidden.
`Argument`	`setIndex(int index)` Sets the argument index.
`Argument`	`setMultiValued(boolean multiValued)` Sets whether or not the argument can receive several values.
`Argument`	`setRequired(boolean required)` Sets whether or not the current `Argument` is required.
`JsonObject`	`toJson()` Exports this `Argument` to its corresponding JSON representation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT_ARG_NAME
```
public static final String DEFAULT_ARG_NAME
```
    The default argument name displayed in the usage.
    
    See Also:
    
    Constant Field Values
  - index
```
protected int index
```
    The argument index. Must be positive or null. It is set fo -1 by default to check that the index was set.
  - argName
```
protected String argName
```
    The argument name used in the usage.
  - description
```
protected String description
```
    The argument description.
  - hidden
```
protected boolean hidden
```
    Whether or not this argument is hidden. Hidden argument are not shown in the usage.
  - required
```
protected boolean required
```
    Whether or not this argument is mandatory. Mandatory arguments throw a MissingValueException if the user command line does not provide a value.
  - defaultValue
```
protected String defaultValue
```
    The optional default value of this argument.
  - multiValued
```
protected boolean multiValued
```
    Whether or not this argument can receive multiple value. Only the last argument can receive multiple values.
- Constructor Detail
  - Argument
```
public Argument()
```
    Creates a new empty instance of Argument.
  - Argument
```
public Argument(Argument other)
```
    Creates a new instance of Argument by copying other.
    
    Parameters:
    
    other - the argument to copy
  - Argument
```
public Argument(JsonObject json)
```
    Creates a new instance of Argument from the given JSON object.
    
    Parameters:
    
    json - the json object
    
    See Also:
    
    toJson()
- Method Detail
  - toJson
```
public JsonObject toJson()
```
    Exports this Argument to its corresponding JSON representation.
    
    Returns:
    
    the json object representing this Argument
    
    See Also:
    
    Argument(JsonObject)
  - getArgName
```
public String getArgName()
```
    Returns:
    
    the arg name, null if not defined.
  - setArgName
```
public Argument setArgName(String argName)
```
    Sets the argument name of this Argument.
    
    Parameters:
    
    argName - the argument name, must not be null
    
    Returns:
    
    the current Argument instance
  - getDescription
```
public String getDescription()
```
    Returns:
    
    the description, null if not defined.
  - setDescription
```
public Argument setDescription(String description)
```
    Sets the description of the Argument.
    
    Parameters:
    
    description - the description
    
    Returns:
    
    the current Argument instance
  - isHidden
```
public boolean isHidden()
```
    Returns:
    
    whether or not the current Argument is hidden.
  - setHidden
```
public Argument setHidden(boolean hidden)
```
    Sets whether or not the current Argument is hidden.
    
    Parameters:
    
    hidden - enables or disables the visibility of this Argument
    
    Returns:
    
    the current Argument instance
  - getIndex
```
public int getIndex()
```
    Returns:
    
    the argument index.
  - setIndex
```
public Argument setIndex(int index)
```
    Sets the argument index.
    
    Parameters:
    
    index - the index, must not be negative
    
    Returns:
    
    the current Argument instance
  - isRequired
```
public boolean isRequired()
```
    Returns:
    
    whether or not the current Argument is required.
  - setRequired
```
public Argument setRequired(boolean required)
```
    Sets whether or not the current Argument is required.
    
    Parameters:
    
    required - true to make this argument mandatory, false otherwise
    
    Returns:
    
    the current Argument instance
  - getDefaultValue
```
public String getDefaultValue()
```
    Returns:
    
    the argument default value, null if not specified.
  - setDefaultValue
```
public Argument setDefaultValue(String defaultValue)
```
    Sets the default value of this Argument.
    
    Parameters:
    
    defaultValue - the default value
    
    Returns:
    
    the current Argument instance
  - isMultiValued
```
public boolean isMultiValued()
```
    Returns:
    
    whether or not the argument can receive several values.
  - setMultiValued
```
public Argument setMultiValued(boolean multiValued)
```
    Sets whether or not the argument can receive several values. Only the last argument can receive several values.
    
    Parameters:
    
    multiValued - true to mark this argument as multi-valued.
    
    Returns:
    
    the current Argument instance
  - ensureValidity
```
public void ensureValidity()
```
    Checks that the argument configuration is valid. This method is mainly made for children classes adding constraint to the configuration. The parser verifies that arguments are valid before starting the parsing.
    If the configuration is not valid, this method throws a IllegalArgumentException.

Class Argument

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_ARG_NAME

index

argName

description

hidden

required

defaultValue

multiValued

Constructor Detail

Argument

Argument

Argument

Method Detail

toJson

getArgName

setArgName

getDescription

setDescription

isHidden

setHidden

getIndex

setIndex

isRequired

setRequired

getDefaultValue

setDefaultValue

isMultiValued

setMultiValued

ensureValidity