PathElement (Hydra Java API)

java.lang.Object
- com.gdblab.pathAlgebra.expressions.PathElement

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<PathElement>

Direct Known Subclasses:

PathElement.Edge, PathElement.First, PathElement.Last, PathElement.Node
```
public abstract class PathElement
extends java.lang.Object
implements java.io.Serializable, java.lang.Comparable<PathElement>
```
References to elements within a path

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`PathElement.Edge`
`static class`	`PathElement.First`
`static class`	`PathElement.Last`
`static class`	`PathElement.Node`
`static interface`	`PathElement.PartialVisitor<R>`	Partial visitor over `PathElement` with a default `PathElement.PartialVisitor.otherwise(com.gdblab.pathAlgebra.expressions.PathElement)` branch.
`static interface`	`PathElement.Visitor<R>`	Visitor over `PathElement`.

Field Summary

Fields
Modifier and Type	Field	Description
`static Name`	`EDGE`	Name of the `com.gdblab.pathAlgebra.expressions.PathElement.edge` field.
`static Name`	`FIRST`	Name of the `com.gdblab.pathAlgebra.expressions.PathElement.first` field.
`static Name`	`LAST`	Name of the `com.gdblab.pathAlgebra.expressions.PathElement.last` field.
`static Name`	`NODE`	Name of the `com.gdblab.pathAlgebra.expressions.PathElement.node` field.
`static Name`	`TYPE_`	Name of the `com.gdblab.pathAlgebra.expressions.PathElement` type.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method Description

abstract <R> R accept(PathElement.Visitor<R> visitor)
Dispatch to visitor.
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
- Methods inherited from interface java.lang.Comparable
  compareTo

- Field Detail
  - TYPE_
```
public static final Name TYPE_
```
    Name of the com.gdblab.pathAlgebra.expressions.PathElement type.
  - NODE
```
public static final Name NODE
```
    Name of the com.gdblab.pathAlgebra.expressions.PathElement.node field.
  - EDGE
```
public static final Name EDGE
```
    Name of the com.gdblab.pathAlgebra.expressions.PathElement.edge field.
  - FIRST
```
public static final Name FIRST
```
    Name of the com.gdblab.pathAlgebra.expressions.PathElement.first field.
  - LAST
```
public static final Name LAST
```
    Name of the com.gdblab.pathAlgebra.expressions.PathElement.last field.
- Method Detail
  - accept
```
public abstract <R> R accept(PathElement.Visitor<R> visitor)
```
    Dispatch to visitor.