Placeholder (tensorics-core API)

java.lang.Object
- org.tensorics.core.tree.domain.AbstractDeferredExpression<R>
- - org.tensorics.core.expressions.Placeholder<R>

Type Parameters:

R - the type of the result of the expression

All Implemented Interfaces:

java.io.Serializable, Expression<R>, Node
```
public class Placeholder<R>
extends AbstractDeferredExpression<R>
```
Represents and unresolved expression which is simply identified by its name.

See Also:

Serialized Form

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object obj)`
`java.util.List<? extends Node>`	`getChildren()`	Has to return the children of the node.
`int`	`hashCode()`
`java.lang.String`	`name()`
`static <R> Placeholder<R>`	`ofClass(java.lang.Class<R> clazz)`
`static <R> Placeholder<R>`	`ofName(java.lang.String name)`
`java.lang.String`	`toString()`

Methods inherited from class org.tensorics.core.tree.domain.AbstractDeferredExpression
get, isResolved

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

- Method Detail
  - ofName
```
public static <R> Placeholder<R> ofName(java.lang.String name)
```
  - ofClass
```
public static <R> Placeholder<R> ofClass(java.lang.Class<R> clazz)
```
  - getChildren
```
public java.util.List<? extends Node> getChildren()
```
    Description copied from interface: Node
    
    Has to return the children of the node. This must never return null
    
    Returns:
    
    a list containing all the children of the node
  - name
```
public java.lang.String name()
```
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object obj)
```
    Overrides:
    
    equals in class java.lang.Object