/*****************************************************************************
SQLJEP - Java SQL Expression Parser 0.2
November 1 2006
(c) Copyright 2006, Alexey Gaidukov
SQLJEP Author: Alexey Gaidukov
SQLJEP is based on JEP 2.24 (http://www.singularsys.com/jep/)
(c) Copyright 2002, Nathan Funk
See LICENSE.txt for license information.
*****************************************************************************/
package com.meidusa.amoeba.sqljep;
import java.util.ArrayList;
/**
* Finds all columns in parser tree and stores them in the array
*/
public class ParserDumpColumns implements ParserVisitor {
ArrayList<Integer> columns;
public ParserDumpColumns(ArrayList<Integer> columns) {
this.columns = columns;
}
public Object visit(SimpleNode node, Object data) throws ParseException {
data = node.childrenAccept(this, data);
return data;
}
public Object visit(ASTStart node, Object data) throws ParseException {
data = node.childrenAccept(this, data);
return data;
}
public Object visit(ASTFunNode node, Object data) throws ParseException {
data = node.childrenAccept(this, data);
return data;
}
public Object visit(ASTVarNode node, Object data) throws ParseException {
if (node.index >= 0) {
columns.add(node.index);
}
data = node.childrenAccept(this, data);
return data;
}
public Object visit(ASTConstant node, Object data) throws ParseException {
data = node.childrenAccept(this, data);
return data;
}
public Object visit(ASTArray node, Object data) throws ParseException {
data = node.childrenAccept(this, data);
return data;
}
}