org.modeshape.graph.query.model
Class Selector

java.lang.Object
  org.modeshape.graph.query.model.Source
      org.modeshape.graph.query.model.Selector

All Implemented Interfaces:

Serializable, LanguageObject, Visitable

Direct Known Subclasses:

AllNodes, NamedSelector

@Immutable
public abstract class Selector
extends Source

See Also:

Serialized Form

Constructor Summary

protected	Selector(SelectorName name) Create a selector with a name.
protected	Selector(SelectorName name, SelectorName alias) Create a selector with the supplied name and alias.

Method Summary

SelectorName	getAlias() Get the alias name for this source, if there is one.
SelectorName	getAliasOrName() Get the alias if this selector has one, or the name.
SelectorName	getName() Get the name for this selector.
boolean	hasAlias() Determine if this selector has an alias.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.modeshape.graph.query.model.Visitable

accept

Constructor Detail

Selector

protected Selector(SelectorName name)

Create a selector with a name.

Parameters:

name - the name for this selector

Throws:

IllegalArgumentException - if the selector name is null

Selector

protected Selector(SelectorName name,
                   SelectorName alias)

Create a selector with the supplied name and alias.

Parameters:

name - the name for this selector

alias - the alias for this selector; may be null

Throws:

IllegalArgumentException - if the selector name is null

Method Detail

getName

public SelectorName getName()

Get the name for this selector.

Returns:

the selector name; never null

getAlias

public SelectorName getAlias()

Get the alias name for this source, if there is one.

Returns:

the alias name, or null if there is none.

getAliasOrName

public SelectorName getAliasOrName()

Get the alias if this selector has one, or the name.

Returns:

the alias or name; never null

hasAlias

public boolean hasAlias()

Determine if this selector has an alias.

Returns:

true if this selector has an alias, or false otherwise.