net.sf.basedb.util.parser
Class LineNoFunction

java.lang.Object
  net.sf.basedb.util.parser.LineNoFunction

All Implemented Interfaces:

JepFunction, org.nfunk.jep.function.PostfixMathCommandI

public class LineNoFunction
extends Object
implements JepFunction

Adds a lineNo() function to Jep. The lineNo() function is used with the FlatFileParser to get the current line number. Use the FlatFileParser.getMapper(String) with an argument starting with an equal sign to create a mapper that uses Jep.

FlatFileParser ffp = ...
Mapper lineNoMapper = ffp.getMapper("=lineNo()");
while (ffp.hasMoreData())
{
        Data data = ffp.nextData();
        int lineNumber = lineNoMapper.getInt(data);
}

Version:

2.4

Author:

nicklas

Last modified

$Date: 2008-09-11 22:08:14 +0200 (Thu, 11 Sep 2008) $

Field Summary

private FlatFileParser.Data

data

Constructor Summary

LineNoFunction()

Method Summary

boolean	checkNumberOfParameters(int n)
String	getFunctionName() Get the name of this function.
int	getNumberOfParameters()
void	run(Stack stack)
void	setCurNumberOfParameters(int n)
void	setData(FlatFileParser.Data data)

Methods inherited from class java.lang.Object

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

Field Detail

data

private FlatFileParser.Data data

Constructor Detail

LineNoFunction

public LineNoFunction()

Method Detail

getFunctionName

public String getFunctionName()

Description copied from interface: JepFunction

Get the name of this function. It is used when registering the function with a JEP parser.

Specified by:

getFunctionName in interface JepFunction

Returns:

The string "lineNo"

See Also:

JEP.addFunction(String, PostfixMathCommandI)

getNumberOfParameters

public int getNumberOfParameters()

Specified by:

getNumberOfParameters in interface org.nfunk.jep.function.PostfixMathCommandI

Returns:

Always 0

setCurNumberOfParameters

public void setCurNumberOfParameters(int n)

Specified by:

setCurNumberOfParameters in interface org.nfunk.jep.function.PostfixMathCommandI

checkNumberOfParameters

public boolean checkNumberOfParameters(int n)

Specified by:

checkNumberOfParameters in interface org.nfunk.jep.function.PostfixMathCommandI

run

public void run(Stack stack)
         throws ParseException

Specified by:

run in interface org.nfunk.jep.function.PostfixMathCommandI

Throws:

ParseException

setData

public void setData(FlatFileParser.Data data)