/*
    * Copyright 2011 The Regents of the University of California.
    */
   package org.kuali.ole.sys.batch;
   
   import java.io.File;
   import java.util.Comparator;
   import java.util.Date;
   
  import org.kuali.ole.gl.batch.BatchSortUtil;
  import org.kuali.ole.sys.batch.AbstractStep;
  
  /**
   * General purpose sort step which can be configured with any Comparator class.
   * 
   * @author jonathan
   */
  public class FlatFileSortStep extends AbstractStep {
  	private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(FlatFileSortStep.class);
  	protected String inputFileName;
  	protected String outputFileName;
  	protected Class<? extends Comparator<String>> lineComparatorClass;
  	
  	public boolean execute(String jobName, Date jobRunDate) throws InterruptedException {
          try {
          	if ( new File(inputFileName).canRead() ) {
          		BatchSortUtil.sortTextFileWithFields(inputFileName, outputFileName, lineComparatorClass.newInstance());
          	} else {
          		LOG.warn( "Input file: " + inputFileName + " does not exist.");
          	}
  		} catch (Exception ex) {
  			throw new RuntimeException( "Unable to instantiate comparator class for sort: " + lineComparatorClass, ex );
  		}
  		return true;
  	}
  
  	public void setInputFileName(String inputFileName) {
  		this.inputFileName = inputFileName;
  	}
  
  	public void setOutputFileName(String outputFileName) {
  		this.outputFileName = outputFileName;
  	}
  
  	public void setLineComparatorClass( Class<? extends Comparator<String>> lineComparatorClass) {
  		this.lineComparatorClass = lineComparatorClass;
  	}
  }