org.modeshape.graph.query.model
Class Selector

java.lang.Object
  extended by org.modeshape.graph.query.model.Selector
All Implemented Interfaces:
Serializable, LanguageObject, Source, Visitable
Direct Known Subclasses:
AllNodes, NamedSelector

@Immutable
public abstract class Selector
extends Object
implements 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 alias()
          Get the alias name for this source, if there is one.
 SelectorName aliasOrName()
          Get the alias if this selector has one, or the name.
 boolean hasAlias()
          Determine if this selector has an alias.
 SelectorName name()
          Get the name for this selector.
 
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

name

public SelectorName name()
Get the name for this selector.

Returns:
the selector name; never null

alias

public SelectorName alias()
Get the alias name for this source, if there is one.

Returns:
the alias name, or null if there is none.

aliasOrName

public SelectorName aliasOrName()
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.


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