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High-performance Java Dataframe with integrated columnar storage (fork of tablesaw)

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package org.datavec.dataframe.io.csv;

import java.io.PrintStream;

/**
 * This Exception wraps another Exception thrown while adding a cell to a column.
 * 

* The methods of this exception allow the causing Exception, row number, * column index, columnNames and line to be retrieved. *

* The dumpRow method allows the row in question to be printed to a * a PrintStream such as System.out */ public class AddCellToColumnException extends RuntimeException { /** * The index of the column that threw the Exception */ private final int columnIndex; /** * The number of the row that caused the exception to be thrown */ private final long rowNumber; /** * The column names stored as an array */ private final String[] columnNames; /** * The original line that caused the Exception */ private final String[] line; /** * Creates a new instance of this Exception * @param e The Exceeption that caused adding to fail * @param columnIndex The index of the column that threw the Exception * @param rowNumber The number of the row that caused the Exception to be thrown * @param columnNames The column names stored as an array * @param line The original line that caused the Exception */ public AddCellToColumnException(Exception e, int columnIndex, long rowNumber, String[] columnNames, String[] line) { super("Error while addding cell from row " + rowNumber + " and column " + columnNames[columnIndex] + "(position:" + columnIndex + "): " + e.getMessage(), e); this.columnIndex = columnIndex; this.rowNumber = rowNumber; this.columnNames = columnNames; this.line = line; } /** * Returns the index of the column that threw the Exception */ public int getColumnIndex() { return columnIndex; } /** * Returns the number of the row that caused the Exception to be thrown */ public long getRowNumber() { return rowNumber; } /** * Returns the column names array */ public String[] getColumnNames() { return columnNames; } /** * Returns the name of the column that caused the Exception */ public String getColumnName() { return columnNames[columnIndex]; } /** * Dumps to a PrintStream the information relative to the row that caused the problem * @param out The PrintStream to output to */ public void dumpRow(PrintStream out) { for (int i = 0; i < columnNames.length; i++) { out.print("Column "); out.print(i); out.print(" "); out.print(columnNames[i]); out.print(" : "); try { out.println(line[i]); } catch (ArrayIndexOutOfBoundsException aioobe) { out.println("Unable to get cell "+i+ " of this line"); } } } }





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