xmltool.codegen
Class GenerateCode

java.lang.Object
  |
  +--xmltool.codegen.GenerateCode

public class GenerateCode

extends java.lang.Object

Generate the query needed in 3 sections as for any general query , Select...From...Where... Currently there is support only for a query w/o join, but provision is made to extend the same code for query on more than one DTD with a join condition. The PoetGenerateCode class calls this class to do the actual work.

Constructor Summary

GenerateCode(Node[] node, int numNodes, Link[] link, int numLinks)
Called by PoetGenerateCode after the generate button is pressed

Method Summary

void	analyzeProject() Modifies the Project condition formed by evaluation of query node to suit Poet datatypes
java.lang.String	getFrom() Returns the FROM condition formed by evaluation of query node
java.lang.String	getProject() Returns the Projection (SELECT in SQL) formed by evaluation of query node
java.lang.String	getSelect() Returns the Selection (WHERE in SQL) formed by evaluation of query node

Methods inherited from class java.lang.Object

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

Constructor Detail

GenerateCode

public GenerateCode(Node[] node,
                    int numNodes,
                    Link[] link,
                    int numLinks)

Called by PoetGenerateCode after the generate button is pressed

Parameters:

node[] - all the nodes

numNodes - Number of nodes

link[] - all the links

Method Detail

getFrom

public java.lang.String getFrom()

Returns the FROM condition formed by evaluation of query node

Returns:

String The FROM condition formed

getProject

public java.lang.String getProject()

Returns the Projection (SELECT in SQL) formed by evaluation of query node

Returns:

String The Project condition formed

analyzeProject

public void analyzeProject()

Modifies the Project condition formed by evaluation of query node to suit Poet datatypes

getSelect

public java.lang.String getSelect()

Returns the Selection (WHERE in SQL) formed by evaluation of query node

Returns:

String The Select condition formed