Node (DataNucleus Core 5.1.13-SNAPSHOT API)

java.lang.Object
- org.datanucleus.query.compiler.Node

Direct Known Subclasses:

ParameterNode
```
public class Node
extends Object
```
Representation of a node in a tree of nodes. Has a parent, and a list of children. Each node has a type and a value. Optionally has a set of properties; these represent arguments when part of a method call.

Field Summary

Fields
Modifier and Type	Field and Description
`protected List<Node>`	`childNodes` List of child nodes in the tree below here.
`protected NodeType`	`nodeType` Type of node.
`protected Object`	`nodeValue` Value of the node.
`protected Node`	`parent` Parent of this node.
`protected List<Node>`	`properties` List of properties for the node.

Constructor Summary

Constructors
Constructor and Description

Node(NodeType nodeType)

Node(NodeType nodeType, Object nodeValue)

Constructors
Constructor and Description
`Node(NodeType nodeType)`
`Node(NodeType nodeType, Object nodeValue)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addProperty(Node node)`
`Node`	`appendChildNode(Node node)`
`Node`	`clone(Node parent)`
`Node`	`getChildNode(int index)`
`List<Node>`	`getChildNodes()`
`Node`	`getFirstChild()` Access the first child node.
`Node`	`getNextChild()` Access the next node.
`String`	`getNodeChildId()`
`String`	`getNodeId()`
`NodeType`	`getNodeType()`
`Object`	`getNodeValue()`
`Node`	`getParent()`
`List<Node>`	`getProperties()`
`boolean`	`hasNextChild()` Return whether there is a "next" child node.
`boolean`	`hasProperties()`
`Node`	`insertChildNode(Node node)`
`Node`	`insertChildNode(Node node, int position)`
`void`	`removeChildNode(Node node)`
`void`	`setNodeValue(Object val)`
`void`	`setParent(Node parent)`
`void`	`setPropertyAtPosition(int position, Node node)`
`String`	`toString()` Method to print out the Node as a tree.

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

Field Detail
- nodeType
```
protected NodeType nodeType
```
  Type of node.
- nodeValue
```
protected Object nodeValue
```
  Value of the node.
- parent
```
protected Node parent
```
  Parent of this node.
- childNodes
```
protected List<Node> childNodes
```
  List of child nodes in the tree below here.
- properties
```
protected List<Node> properties
```
  List of properties for the node. Used for invocation of methods, representing the arguments.

Constructor Detail

Node
```
public Node(NodeType nodeType)
```

Node

public Node(NodeType nodeType,
            Object nodeValue)

Method Detail

getNodeType
```
public NodeType getNodeType()
```

setNodeValue
```
public void setNodeValue(Object val)
```

getNodeValue
```
public Object getNodeValue()
```

hasProperties
```
public boolean hasProperties()
```

getProperties
```
public List<Node> getProperties()
```

addProperty
```
public void addProperty(Node node)
```

setPropertyAtPosition

public void setPropertyAtPosition(int position,
                                  Node node)

getChildNodes
```
public List<Node> getChildNodes()
```

removeChildNode

public void removeChildNode(Node node)

insertChildNode

public Node insertChildNode(Node node)

insertChildNode

public Node insertChildNode(Node node,
                            int position)

appendChildNode

public Node appendChildNode(Node node)

getChildNode
```
public Node getChildNode(int index)
```

getFirstChild
```
public Node getFirstChild()
```
Access the first child node.

Returns:

The first node, or null if no children present

getNextChild
```
public Node getNextChild()
```
Access the next node. This asssumes that the method
```
getFirstChild
```
has been called before.
Returns:

The next child

hasNextChild
```
public boolean hasNextChild()
```
Return whether there is a "next" child node. Assumes that the method
```
getFirstChild
```
has been called before.
Returns:

Whether there is a next child node.

setParent
```
public void setParent(Node parent)
```

getParent
```
public Node getParent()
```

getNodeId
```
public String getNodeId()
```

getNodeChildId
```
public String getNodeChildId()
```

toString
```
public String toString()
```
Method to print out the Node as a tree.

Overrides:

toString in class Object

Returns:

the node tree as a string

clone
```
public Node clone(Node parent)
```

Class Node

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

nodeType

nodeValue

parent

childNodes

properties

Constructor Detail

Node

Node

Method Detail

getNodeType

setNodeValue

getNodeValue

hasProperties

getProperties

addProperty

setPropertyAtPosition

getChildNodes

removeChildNode

insertChildNode

insertChildNode

appendChildNode

getChildNode

getFirstChild

getNextChild

hasNextChild

setParent

getParent

getNodeId

getNodeChildId

toString

clone