Object
- Formattable
- - AbstractParameter
  - - ParameterGroup

All Implemented Interfaces:

Serializable, Cloneable, GeneralParameterValue, ParameterValueGroup, Cloneable

Direct Known Subclasses:

MatrixParameters
```
public class ParameterGroup
extends AbstractParameter
implements ParameterValueGroup
```
A group of related parameter values. The same group can be repeated more than once in an operation or higher level ParameterValueGroup, if those instances contain different values of one or more ParameterValues which suitably distinquish among those groups.

Since:

2.1

Author:

Martin Desruisseaux (IRD), Jody Garnett (Refractions Research)

See Also:

DefaultParameterDescriptorGroup, Parameter, Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static ParameterValueGroup EMPTY
An empty parameter value group.
- Fields inherited from class Formattable
  SINGLE_LINE

Constructor Summary

Constructors
Constructor	Description
`ParameterGroup(Map<String,?> properties, GeneralParameterValue... values)`	Constructs a parameter group from the specified list of parameters.
`ParameterGroup(ParameterDescriptorGroup descriptor)`	Constructs a parameter group from the specified descriptor.
`ParameterGroup(ParameterDescriptorGroup descriptor, GeneralParameterValue... values)`	Constructs a parameter group from the specified descriptor and list of parameters.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ParameterValueGroup`	`addGroup(String name)`	Creates a new group of the specified name.
`ParameterGroup`	`clone()`	Returns a deep copy of this group of parameter values.
`boolean`	`equals(Object object)`	Compares the specified object with this parameter for equality.
`ParameterDescriptorGroup`	`getDescriptor()`	Returns the abstract definition of this group of parameters.
`List<ParameterValueGroup>`	`groups(String name)`	Returns all subgroups with the specified name.
`int`	`hashCode()`	Returns a hash value for this parameter.
`ParameterValue`	`parameter(String name)`	Returns the value in this group for the specified identifier code.
`List<GeneralParameterValue>`	`values()`	Returns the values in this group.

Methods inherited from class AbstractParameter
formatWKT, toString, write

Methods inherited from class Formattable
cleanupThreadLocals, toWKT, toWKT, toWKT, toWKT

Methods inherited from class Object
finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - EMPTY
```
public static ParameterValueGroup EMPTY
```
    An empty parameter value group. This group contains no parameter value.
- Constructor Detail
  - ParameterGroup
```
public ParameterGroup(ParameterDescriptorGroup descriptor)
```
    Constructs a parameter group from the specified descriptor. All parameter values will be initialized to their default value.
    
    Parameters:
    
    descriptor - The descriptor for this group.
  - ParameterGroup
```
public ParameterGroup(ParameterDescriptorGroup descriptor,
                      GeneralParameterValue... values)
```
    Constructs a parameter group from the specified descriptor and list of parameters.
    
    Parameters:
    
    descriptor - The descriptor for this group.
    
    values - The list of parameter values.
    
    Throws:
    
    IllegalStateException - if the number of parameter occurences doesn't matches the number declared in the descriptor.
  - ParameterGroup
```
public ParameterGroup(Map<String,?> properties,
                      GeneralParameterValue... values)
```
    Constructs a parameter group from the specified list of parameters.
    
    Parameters:
    
    properties - The properties for the operation parameter group to construct from the list of parameters.
    
    values - The list of parameter values.
    
    Throws:
    
    IllegalStateException - if the number of parameter occurences doesn't matches the number declared in the descriptor.
- Method Detail
  - getDescriptor
```
public ParameterDescriptorGroup getDescriptor()
```
    Returns the abstract definition of this group of parameters.
    
    Specified by:
    
    getDescriptor in interface GeneralParameterValue
    
    Specified by:
    
    getDescriptor in interface ParameterValueGroup
    
    Overrides:
    
    getDescriptor in class AbstractParameter
    
    Returns:
    
    The abstract definition of this parameter or group of parameters.
  - values
```
public List<GeneralParameterValue> values()
```
    Returns the values in this group. Changes in this list are reflected on this ParameterValueGroup. The returned list supports the add operation.
    
    Specified by:
    
    values in interface ParameterValueGroup
    
    Returns:
    
    The values in this group.
  - parameter
```
public ParameterValue parameter(String name)
                         throws ParameterNotFoundException
```
    Returns the value in this group for the specified identifier code. If no parameter value is found but a parameter descriptor is found (which may occurs if the parameter is optional, i.e. minimumOccurs == 0), then a parameter value is automatically created and initialized to its default value (if any).
    This convenience method provides a way to get and set parameter values by name. For example the following idiom fetches a floating point value for the "false_easting" parameter:
    double value = parameter("false_easting").doubleValue();
    
    This method do not search recursively in subgroups. This is because more than one subgroup may exist for the same descriptor. The user must query all subgroups and select explicitly the appropriate one to use.
    
    Specified by:
    
    parameter in interface ParameterValueGroup
    
    Parameters:
    
    name - The case insensitive identifier code of the parameter to search for.
    
    Returns:
    
    The parameter value for the given identifier code.
    
    Throws:
    
    ParameterNotFoundException - if there is no parameter value for the given identifier code.
  - groups
```
public List<ParameterValueGroup> groups(String name)
                                 throws ParameterNotFoundException
```
    Returns all subgroups with the specified name. This method do not create new groups. If the requested group is optional (i.e. minimumOccurs == 0) and no value were set, then this method returns an empty set.
    
    Specified by:
    
    groups in interface ParameterValueGroup
    
    Parameters:
    
    name - The case insensitive identifier code of the parameter group to search for.
    
    Returns:
    
    The set of all parameter group for the given identifier code.
    
    Throws:
    
    ParameterNotFoundException - if no descriptor was found for the given name.
  - addGroup
```
public ParameterValueGroup addGroup(String name)
                             throws ParameterNotFoundException,
                                    InvalidParameterCardinalityException
```
    Creates a new group of the specified name. The specified name must be the identifier code of a descriptor group.
    
    Specified by:
    
    addGroup in interface ParameterValueGroup
    
    Parameters:
    
    name - The case insensitive identifier code of the parameter group to create.
    
    Returns:
    
    A newly created parameter group for the given identifier code.
    
    Throws:
    
    ParameterNotFoundException - if no descriptor was found for the given name.
    
    InvalidParameterCardinalityException - if this parameter group already contains the maximum number of occurences of subgroups of the given name.
  - equals
```
public boolean equals(Object object)
```
    Compares the specified object with this parameter for equality.
    
    Overrides:
    
    equals in class AbstractParameter
    
    Parameters:
    
    object - The object to compare to this.
    
    Returns:
    
    true if both objects are equal.
  - hashCode
```
public int hashCode()
```
    Returns a hash value for this parameter.
    
    Overrides:
    
    hashCode in class AbstractParameter
    
    Returns:
    
    The hash code value. This value doesn't need to be the same in past or future versions of this class.
  - clone
```
public ParameterGroup clone()
```
    Returns a deep copy of this group of parameter values. Included parameter values and subgroups are cloned recursively.
    
    Specified by:
    
    clone in interface Cloneable
    
    Specified by:
    
    clone in interface GeneralParameterValue
    
    Specified by:
    
    clone in interface ParameterValueGroup
    
    Overrides:
    
    clone in class AbstractParameter
    
    Returns:
    
    A copy of this group of parameter values.
    
    See Also:
    
    Object.clone()

Class ParameterGroup

Field Summary

Fields inherited from class Formattable

Constructor Summary

Method Summary

Methods inherited from class AbstractParameter

Methods inherited from class Formattable

Methods inherited from class Object

Field Detail

EMPTY

Constructor Detail

ParameterGroup

ParameterGroup

ParameterGroup

Method Detail

getDescriptor

values

parameter

groups

addGroup

equals

hashCode

clone