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org.eclipse.emf.edit.command
Class CommandParameter

java.lang.Object
  org.eclipse.emf.edit.command.CommandParameter

public class CommandParameter

extends Object

This is a convenient common base class for all the command parameters need by the various types of commands. It provides particular support for the encodings need by the basic EMF-based command implementations.

Field Summary

Collection	collection This is the collection of values involved in the command.
Object	feature This is the aspect of the owner that will be affected.
int	index This the index (ususally the position indicator) of the command.
static int	NO_INDEX This value is used to indicate that the optional positional index indicator is unspecified.
Object	owner This is the object that is the target or subject of the command.
Object	value This is the single value involved in the command.

Constructor Summary

CommandParameter(Object owner)
This creates an instance specifying only an owner.

CommandParameter(Object owner, Object feature, Collection collection)
This creates an instance specifying an owner, a feature, and a collection of values.

CommandParameter(Object owner, Object feature, Collection collection, int index)
This creates an instance specifying an owner, a feature, a collection of values, and an index.

CommandParameter(Object owner, Object feature, Object value)
This creates an instance specifying an owner, a feature, and a value.

CommandParameter(Object owner, Object feature, Object value, Collection collection)
This creates an instance specifying an owner, a feature, and a value, and a collection.

CommandParameter(Object owner, Object feature, Object value, Collection collection, int index)
This creates an instance specifying an owner, a feature, a value, a collection, and an index.

CommandParameter(Object owner, Object feature, Object value, int index)
This creates an instance specifying an owner, a feature, a value, and an index.

Method Summary

static String	collectionToString(Collection collection)
Collection	getCollection() This returns the specified collection.
EAttribute	getEAttribute() This returns the specified feature as a EReference, if it is one.
EObject	getEOwner() This returns the specified owner as a EObject, if it is one.
EReference	getEReference() This returns the specified feature as a EReference, if it is one.
EStructuralFeature	getEStructuralFeature() This returns the specified feature as a EStructuralFeature, if it is one.
EObject	getEValue() This returns the specified value as a EObject, if it is one.
Object	getFeature() This returns the specified feature.
int	getIndex() This returns the specified index.
List	getList() This returns the specified collection as a list.
Object	getOwner() This returns the specified owner.
EList	getOwnerList() This is a safe way to get the list affected by the parameters for an add or remove specification.
Collection	getParameters() This yields an encoding of the owner-child relation.
Object	getValue() This returns the specified value.
void	setOwner(Object owner) This sets the owner to the specified value.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NO_INDEX

public static final int NO_INDEX

This value is used to indicate that the optional positional index indicator is unspecified.

See Also:

Constant Field Values

owner

public Object owner

This is the object that is the target or subject of the command.

feature

public Object feature

This is the aspect of the owner that will be affected.

collection

public Collection collection

This is the collection of values involved in the command.

value

public Object value

This is the single value involved in the command.

index

public int index

This the index (ususally the position indicator) of the command.

Constructor Detail

CommandParameter

public CommandParameter(Object owner)

This creates an instance specifying only an owner.

CommandParameter

public CommandParameter(Object owner,
                        Object feature,
                        Object value)

This creates an instance specifying an owner, a feature, and a value.

CommandParameter

public CommandParameter(Object owner,
                        Object feature,
                        Object value,
                        int index)

This creates an instance specifying an owner, a feature, a value, and an index.

CommandParameter

public CommandParameter(Object owner,
                        Object feature,
                        Collection collection)

This creates an instance specifying an owner, a feature, and a collection of values.

CommandParameter

public CommandParameter(Object owner,
                        Object feature,
                        Collection collection,
                        int index)

This creates an instance specifying an owner, a feature, a collection of values, and an index.

CommandParameter

public CommandParameter(Object owner,
                        Object feature,
                        Object value,
                        Collection collection)

This creates an instance specifying an owner, a feature, and a value, and a collection.

CommandParameter

public CommandParameter(Object owner,
                        Object feature,
                        Object value,
                        Collection collection,
                        int index)

This creates an instance specifying an owner, a feature, a value, a collection, and an index.

Method Detail

getOwner

public Object getOwner()

This returns the specified owner.

getEOwner

public EObject getEOwner()

This returns the specified owner as a EObject, if it is one.

setOwner

public void setOwner(Object owner)

This sets the owner to the specified value.

getFeature

public Object getFeature()

This returns the specified feature.

getEStructuralFeature

public EStructuralFeature getEStructuralFeature()

This returns the specified feature as a EStructuralFeature, if it is one.

getEReference

public EReference getEReference()

This returns the specified feature as a EReference, if it is one.

getEAttribute

public EAttribute getEAttribute()

This returns the specified feature as a EReference, if it is one.

getOwnerList

public EList getOwnerList()

This is a safe way to get the list affected by the parameters for an add or remove specification. It can return either the EList, if the owner is one, or it tries to get the EList specified by the feature of the owner.

It works as an excellent guard for poorly formed parameters.

getCollection

public Collection getCollection()

This returns the specified collection.

getList

public List getList()

This returns the specified collection as a list. If the collection isn't a list, a new copy is created.

getValue

public Object getValue()

This returns the specified value.

getEValue

public EObject getEValue()

This returns the specified value as a EObject, if it is one.

getIndex

public int getIndex()

This returns the specified index.

getParameters

public Collection getParameters()

This yields an encoding of the owner-child relation.

collectionToString

public static String collectionToString(Collection collection)

toString

public String toString()