org.jsimpledb.parse.expr

Class VarNode

java.lang.Object

org.jsimpledb.parse.expr.ConstNode

org.jsimpledb.parse.expr.VarNode

All Implemented Interfaces:

Node

public class VarNode
extends ConstNode

Node representing a parsed ParseSession variable.

See Also:

ParseSession.getVars()

Constructor Summary

Constructors

Constructor and Description
VarNode(String name) Constructor.

Method Summary

Modifier and Type	Method and Description
VarValue	evaluate(ParseSession session) Evaluate this node.
String	getName() Get the variable name.
Class<?>	getType(ParseSession session) Get the type of this node's value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VarNode

public VarNode(String name)

Constructor.

Parameters:

name - variable name

Throws:

IllegalArgumentException - if name is null

IllegalArgumentException - if name is not a valid Java identifier

Method Detail

evaluate

public VarValue evaluate(ParseSession session)

Description copied from interface: Node

Evaluate this node. There will be a transaction open.

Specified by:

evaluate in interface Node

Overrides:

evaluate in class ConstNode

Parameters:

session - parse session

Returns:

result of node evaluation

getType

public Class<?> getType(ParseSession session)

Description copied from interface: Node

Get the type of this node's value.

If the type is unknown, Object.class should be returned.

Specified by:

getType in interface Node

Overrides:

getType in class ConstNode

Parameters:

session - parse session

Returns:

the expected type of the node

getName

public String getName()

Get the variable name.

Returns:

variable name