weka.knowledgeflow.steps

Class FlowByExpression.BracketNode

java.lang.Object

weka.knowledgeflow.steps.FlowByExpression.ExpressionNode

weka.knowledgeflow.steps.FlowByExpression.BracketNode

All Implemented Interfaces:

Serializable

Enclosing class:

FlowByExpression

public static class FlowByExpression.BracketNode
extends FlowByExpression.ExpressionNode
implements Serializable

An expression node that encloses other expression nodes in brackets

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BracketNode()

Method Summary

Modifier and Type	Method and Description
void	addChild(FlowByExpression.ExpressionNode child) Add a child to this bracket node
boolean	evaluate(Instance inst, boolean result) Evaluate this node and combine with the result so far
void	init(Instances structure, Environment env) Initialize the node
String	parseFromInternal(String expression) Parse and initialize from the internal representation
void	removeChild(FlowByExpression.ExpressionNode child) Remove a child from this bracket node
DefaultMutableTreeNode	toJTree(DefaultMutableTreeNode parent) Get a DefaultMutableTreeNode for this node
String	toString()
void	toStringDisplay(StringBuffer buff) Get the display representation of this node
void	toStringInternal(StringBuffer buff) Get the internal representation of this node

Methods inherited from class weka.knowledgeflow.steps.FlowByExpression.ExpressionNode

isNegated, isOr, setIsOr, setNegated, setShowAndOr

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BracketNode

public BracketNode()

Method Detail

init

public void init(Instances structure,
                 Environment env)

Description copied from class: FlowByExpression.ExpressionNode

Initialize the node

Overrides:

init in class FlowByExpression.ExpressionNode

Parameters:

structure - the structure of the incoming instances

env - Environment variables

evaluate

public boolean evaluate(Instance inst,
                        boolean result)

Description copied from class: FlowByExpression.ExpressionNode

Evaluate this node and combine with the result so far

Specified by:

evaluate in class FlowByExpression.ExpressionNode

Parameters:

inst - the incoming instance to evalute with

result - the result to combine with

Returns:

the result after combining with this node

addChild

public void addChild(FlowByExpression.ExpressionNode child)

Add a child to this bracket node

Parameters:

child - the ExpressionNode to add

removeChild

public void removeChild(FlowByExpression.ExpressionNode child)

Remove a child from this bracket node

Parameters:

child - the ExpressionNode to remove

toString

public String toString()

Overrides:

toString in class Object

toJTree

public DefaultMutableTreeNode toJTree(DefaultMutableTreeNode parent)

Description copied from class: FlowByExpression.ExpressionNode

Get a DefaultMutableTreeNode for this node

Specified by:

toJTree in class FlowByExpression.ExpressionNode

Parameters:

parent - the parent of this node (if any)

Returns:

the DefaultMutableTreeNode for this node

toStringDisplay

public void toStringDisplay(StringBuffer buff)

Description copied from class: FlowByExpression.ExpressionNode

Get the display representation of this node

Specified by:

toStringDisplay in class FlowByExpression.ExpressionNode

Parameters:

buff - the string buffer to append to

toStringInternal

public void toStringInternal(StringBuffer buff)

Description copied from class: FlowByExpression.ExpressionNode

Get the internal representation of this node

Specified by:

toStringInternal in class FlowByExpression.ExpressionNode

Parameters:

buff - the string buffer to append to

parseFromInternal

public String parseFromInternal(String expression)

Description copied from class: FlowByExpression.ExpressionNode

Parse and initialize from the internal representation

Parameters:

expression - the expression to parse in internal representation

Returns:

the remaining parts of the expression after parsing and removing the part for this node