org.apache.log4j.spi: public class: ThrowableInformation

org.apache.log4j.spi
public class: ThrowableInformation [javadoc | source]

java.lang.Object
   org.apache.log4j.spi.ThrowableInformation

All Implemented Interfaces:
Serializable

ThrowableInformation is log4j's internal representation of throwables. It essentially consists of a string array, called 'rep', where the first element, that is rep[0], represents the string representation of the throwable (i.e. the value you get when you do throwable.toString()) and subsequent elements correspond the stack trace with the top most entry of the stack corresponding to the second entry of the 'rep' array that is rep[1].

author: Ceki - Gülcü

Field Summary
static final long	serialVersionUID

Constructor:

Constructor:
public ThrowableInformation(Throwable throwable) { this.throwable = throwable; }
public ThrowableInformation(String[] r) { if (r != null) { rep = (String[]) r.clone(); } } Create new instance. Parameters: `r` - String representation of throwable. since: `1.2.15` -

 public ThrowableInformation(Throwable throwable) {
  
    this.throwable = throwable;
}

 public ThrowableInformation(String[] r) {
      if (r != null) {
        rep = (String[]) r.clone();
      }
}

Create new instance.

Parameters:

r - String representation of throwable.

since: 1.2.15 -

Method from org.apache.log4j.spi.ThrowableInformation Summary:
getThrowable, getThrowableStrRep

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.log4j.spi.ThrowableInformation Detail:
public Throwable getThrowable() { return throwable; }
public String[] getThrowableStrRep() { if(rep != null) { return (String[]) rep.clone(); } else { StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); throwable.printStackTrace(pw); pw.flush(); LineNumberReader reader = new LineNumberReader( new StringReader(sw.toString())); ArrayList lines = new ArrayList(); try { String line = reader.readLine(); while(line != null) { lines.add(line); line = reader.readLine(); } } catch(IOException ex) { lines.add(ex.toString()); } rep = new String[lines.size()]; lines.toArray(rep); } return rep; }

Method from org.apache.log4j.spi.ThrowableInformation Detail:

 public Throwable getThrowable() {
    return throwable;
}

 public String[] getThrowableStrRep() {
    if(rep != null) {
      return (String[]) rep.clone();
    } else {
      StringWriter sw = new StringWriter();
      PrintWriter pw = new PrintWriter(sw);
      throwable.printStackTrace(pw);
      pw.flush();
      LineNumberReader reader = new LineNumberReader(
              new StringReader(sw.toString()));
      ArrayList lines = new ArrayList();
      try {
        String line = reader.readLine();
        while(line != null) {
          lines.add(line);
          line = reader.readLine();
        }
      } catch(IOException ex) {
          lines.add(ex.toString());
      }
      rep = new String[lines.size()];
      lines.toArray(rep);
    }
    return rep;
}