com.lobsterman.JavaGrinders

Class DataFileParser

java.lang.Object

com.lobsterman.JavaGrinders.DataFileParser

public class DataFileParser
extends java.lang.Object

interfaces with disk-based files. A file is read and its content is parsed into * individual columns and rows. If no name is provided to its contructor, a getfile * dialog box allows the interactive selection of a file.

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.String[][]	FileData
java.lang.String	itsFileName
java.lang.String	itsFilePath

Constructor Summary

Constructors

Constructor and Description
DataFileParser() constructor for the DataFileParser class if no text file name is provided
DataFileParser(java.lang.String filePath) standard constructor for the DataFileParser class
DataFileParser(java.lang.String filePath, java.lang.String delimin) standard constructor for the DataFileParser class

Method Summary

Modifier and Type	Method and Description
double[]	copyDataArray(int col) Constructor for the ECG_Analyzer class.
java.lang.String[]	copyStringArray(int col) Constructor for the ECG_Analyzer class.
int	getNColumns() provides read access to private variable nCols
int	getNDataRows() returns the number of valid data rows that were read from the text file
int	getNRows() provides read access to private variable nRows
void	listinFileInfo() report some info on the content read from the text file
void	listinFileInfo(int startLine, int endLine) report some info on the content read from the text file
void	readToInternalArray() nitty gritty of reading and parsing, it first steps thrpugh and gets the number * of rows and columns, then opens an array of that size to read into, then fills * it with the content of the file in a second pass
void	setDelimiters(java.lang.String delim) sets the delimiters for the fields in the text file as a regular expression

Methods inherited from class java.lang.Object

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

Field Detail

FileData

public java.lang.String[][] FileData

itsFilePath

public java.lang.String itsFilePath

itsFileName

public java.lang.String itsFileName

Constructor Detail

DataFileParser

public DataFileParser(java.lang.String filePath)
               throws java.lang.Exception

standard constructor for the DataFileParser class

Parameters:

filePath - specifies the name and path of the text file to read from * @param firstLIneAsLabels speficies whether the first row of the text file contains column labels instead of data

Throws:

java.lang.Exception

DataFileParser

public DataFileParser(java.lang.String filePath,
                      java.lang.String delimin)
               throws java.lang.Exception

standard constructor for the DataFileParser class

Parameters:

filePath - specifies the name and path of the text file to read from * @param firstLIneAsLabels speficies whether the first row of the text file contains column labels instead of data

Throws:

java.lang.Exception

DataFileParser

public DataFileParser()
               throws java.lang.Exception

constructor for the DataFileParser class if no text file name is provided

Throws:

java.lang.Exception

Method Detail

setDelimiters

public void setDelimiters(java.lang.String delim)

sets the delimiters for the fields in the text file as a regular expression

Parameters:

delim - specifies the delimiters, e.g. "//s" breaks on all white spaces

getNColumns

public int getNColumns()

provides read access to private variable nCols

getNRows

public int getNRows()

provides read access to private variable nRows

getNDataRows

public int getNDataRows()

returns the number of valid data rows that were read from the text file

readToInternalArray

public void readToInternalArray()

nitty gritty of reading and parsing, it first steps thrpugh and gets the number * of rows and columns, then opens an array of that size to read into, then fills * it with the content of the file in a second pass

copyDataArray

public double[] copyDataArray(int col)

Constructor for the ECG_Analyzer class.

Parameters:

col - the column to use

copyStringArray

public java.lang.String[] copyStringArray(int col)

Constructor for the ECG_Analyzer class.

Parameters:

col - the column to use

listinFileInfo

public void listinFileInfo()

report some info on the content read from the text file

listinFileInfo

public void listinFileInfo(int startLine,
                           int endLine)

report some info on the content read from the text file

Parameters:

startLine - row at which to start

endLine - row at which to end