com.ibm.tivoli.maximo.report.expr

Class JoiningParserHelper

java.lang.Object

com.ibm.tivoli.maximo.report.expr.JoiningParserHelper

All Implemented Interfaces:

ExprParser.ParserHelper

Direct Known Subclasses:

CognosUtil.CognosObjectCombinerExpressionHelper, CognosUtil.CognosObjectTypeExpressionHelper, CognosUtil.CognosReferenceExpressionHelper, FieldPlaceholderParserHelper, MaximoMacroParserHelper

public class JoiningParserHelper
extends java.lang.Object
implements ExprParser.ParserHelper

Base class for a parser helper that will join a pattern of nodes, creating a new Node type. ie, you would use this in cases where you need to join 3 nodes, like '[', TEXT, ']', into a single node like, '[TEXT]'

Author:

sls

Constructor Summary

Constructors

Constructor and Description
JoiningParserHelper(Node... pattern)

Method Summary

Modifier and Type	Method and Description
Node	evaluateNode(Node parent, Node current) Parser Helper allows a subclass to extend the parser to create new node types, or change the parse tree during parsing.

Methods inherited from class java.lang.Object

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

Constructor Detail

JoiningParserHelper

public JoiningParserHelper(Node... pattern)

Method Detail

evaluateNode

public Node evaluateNode(Node parent,
                         Node current)

Description copied from interface: ExprParser.ParserHelper

Parser Helper allows a subclass to extend the parser to create new node types, or change the parse tree during parsing.

Specified by:

evaluateNode in interface ExprParser.ParserHelper

Parameters:

parent - current parent Node (ie, Group, or Root node)

current - current node that was just created by the parser... BEFORE it gets added to the parent

Returns:

Node to be added to the parent, or Null, if no node should be added