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J2ME

Eigen J2ME dataSYSTEMPATH implementatie (extractie)
package core;

import java.io.InputStreamReader;
import javax.microedition.rms.RecordStoreException;

public class Model {
  /*
  Magic Numbers:
  
  End Of Line      = 10
  End Of File      = -1
  Space            = 32
  Carriage Return  = 13
  RECORD_SEPARATOR = '|';
  VALUE_SEPARATOR  = '~';
  */

  /** Complete record minus de id van de record                                  */
  public    String                record;
  
  /** Inputstream gebruikt voor lezen databases                                  */
  private   InputStreamReader     isr;

  /**
   * Zet de record (uit de RMS indien update anders database) als een string (minus ID)
   * @param pageId    De pagina die word opgevraagd
   * @param start     De start positie waar de pagina gevonden kan worden (karakter zoveel)
   * @param size      De lengte van dit record
   */
  public void setup(int start, int size) throws Exception {
    isr = null;
    int max = 100; // max. records per database file

    for (int i = max; i < 900; i += max) {
      if (Controller.pageId <= i) {
        isr = new InputStreamReader(getClass().getResourceAsStream("/databases/" + (i-max+1) + "_" + i + ".db"));
        break;
      }
    }

    
    if (start != 1) {
      isr.skip(start);
    }

    int dataLength = size - parseTitle() - 1;

    // View Data
    char[] data = new char[dataLength];
    isr.read(data, 0, dataLength);
    isr.close();
    record = new String(data).trim();       //trim verwijdert linebreaks
  }
}
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