org.datanucleus.query.node
Class Node

java.lang.Object
  org.datanucleus.query.node.Node

Direct Known Subclasses:

ParameterNode

public class Node
extends java.lang.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

protected java.util.List	childNodes List of child nodes in the tree below here.
static int	CLASS class node type (use in a "from" clause for a candidate).
static int	CREATOR creator node type.
static int	IDENTIFIER identifier node type
static int	INVOKE invoke node type.
static int	LITERAL literal node type
static int	NAME type name node type.
protected int	nodeType Type of node.
protected java.lang.Object	nodeValue Value of the node.
static int	OPERATOR operator node type.
static int	PARAMETER parameter node type
protected Node	parent Parent of this node.
protected java.util.List	properties List of properties for the node.
protected Symbol	symbol

Constructor Summary

Node(int nodeType)

Node(int nodeType, java.lang.Object nodeValue)

Method Summary

void	addProperty(Node node)
Node	appendChildNode(Node node)
Node[]	appendChildNode(Node[] node)
Node[][]	appendChildNode(Node[][] node)
Node	getChildNode(int index)
java.util.List	getChildNodes()
Node	getFirstChild()
Node	getNextChild()
java.lang.String	getNodeChildId()
java.lang.String	getNodeId()
int	getNodeType()
java.lang.Object	getNodeValue()
Node	getParent()
java.util.List	getProperties()
Symbol	getSymbol()
boolean	hasNextChild()
boolean	hasProperties()
Node	insertChildNode(Node node)
void	setParent(Node parent)
void	setSymbol(Symbol symbol)
java.lang.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

LITERAL

public static final int LITERAL

literal node type

See Also:

Constant Field Values

INVOKE

public static final int INVOKE

invoke node type. Such as method/function invocation.

See Also:

Constant Field Values

NAME

public static final int NAME

type name node type. Not defined what this was for so now being used for aliases in from clause.

See Also:

Constant Field Values

IDENTIFIER

public static final int IDENTIFIER

identifier node type

See Also:

Constant Field Values

OPERATOR

public static final int OPERATOR

operator node type.

See Also:

Constant Field Values

CREATOR

public static final int CREATOR

creator node type. Such as new X().

See Also:

Constant Field Values

CLASS

public static final int CLASS

class node type (use in a "from" clause for a candidate).

See Also:

Constant Field Values

PARAMETER

public static final int PARAMETER

parameter node type

See Also:

Constant Field Values

nodeType

protected int nodeType

Type of node.

nodeValue

protected java.lang.Object nodeValue

Value of the node.

symbol

protected Symbol symbol

parent

protected Node parent

Parent of this node.

childNodes

protected java.util.List childNodes

List of child nodes in the tree below here.

properties

protected java.util.List properties

List of properties for the node. Used for invocation of methods, representing the arguments.

Constructor Detail

Node

public Node(int nodeType)

Node

public Node(int nodeType,
            java.lang.Object nodeValue)

Method Detail

getNodeType

public int getNodeType()

getNodeValue

public java.lang.Object getNodeValue()

hasProperties

public boolean hasProperties()

getProperties

public java.util.List getProperties()

addProperty

public void addProperty(Node node)

getChildNodes

public java.util.List getChildNodes()

insertChildNode

public Node insertChildNode(Node node)

appendChildNode

public Node appendChildNode(Node node)

appendChildNode

public Node[] appendChildNode(Node[] node)

appendChildNode

public Node[][] appendChildNode(Node[][] node)

getChildNode

public Node getChildNode(int index)

getFirstChild

public Node getFirstChild()

getNextChild

public Node getNextChild()

hasNextChild

public boolean hasNextChild()

getSymbol

public Symbol getSymbol()

setSymbol

public void setSymbol(Symbol symbol)

setParent

public void setParent(Node parent)

getParent

public Node getParent()

getNodeId

public java.lang.String getNodeId()

getNodeChildId

public java.lang.String getNodeChildId()

toString

public java.lang.String toString()

Method to print out the Node as a tree.

Overrides:

toString in class java.lang.Object

Returns:

the node tree as a string