90 lines
3.0 KiB
Java
90 lines
3.0 KiB
Java
// loaderCore.java
|
|
// ---------------------------
|
|
// (C) by Michael Peter Christen; mc@yacy.net
|
|
// first published on http://www.anomic.de
|
|
// Frankfurt, Germany, 2004
|
|
//
|
|
// $LastChangedDate$
|
|
// $LastChangedRevision$
|
|
// $LastChangedBy$
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 2 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
package net.yacy.utils;
|
|
|
|
import java.util.Properties;
|
|
|
|
public abstract class loaderCore implements loaderProcess {
|
|
|
|
// status constants
|
|
public static final int STATUS_IDLE = -1; // not yet initialized
|
|
public static final int STATUS_READY = 0; // initialized, but not yet started
|
|
public static final int STATUS_RUNNING = 1; // started and running
|
|
public static final int STATUS_ABORTED = 2; // terminated before completion
|
|
public static final int STATUS_FAILED = 3; // failed before completion
|
|
public static final int STATUS_COMPLETED = 4; // completed; may run again
|
|
public static final int STATUS_FINALIZED = 9; // completed; may not run again
|
|
|
|
// class variables
|
|
protected Exception error = null;
|
|
protected int status = STATUS_IDLE;
|
|
protected Properties result = new Properties();
|
|
protected boolean run = true;
|
|
protected int completion = 0;
|
|
|
|
// steering methods
|
|
@Override
|
|
public abstract void feed(byte[] a); // returns true if process was successful; should be always synchronized
|
|
|
|
@Override
|
|
public void terminate() {
|
|
// if terminated before completion, completed() shows x < 100
|
|
run = false;
|
|
}
|
|
|
|
// feed-back methods
|
|
@Override
|
|
public Properties result() {
|
|
return result;
|
|
}
|
|
|
|
@Override
|
|
public int completed() {
|
|
// guess of completion status. shall be 100 if totally completed.
|
|
return completion;
|
|
}
|
|
|
|
// error control
|
|
@Override
|
|
public int status() {
|
|
// -1=idle, 0=ready, 1=running, 2=aborted, 3=failed, 4=completed, 9=finalized
|
|
return status;
|
|
}
|
|
|
|
@Override
|
|
public boolean available() {
|
|
// true if it is ok to feed with feed()
|
|
return (status() == STATUS_READY) ||
|
|
(status() == STATUS_COMPLETED && (result == null || result.isEmpty()));
|
|
}
|
|
|
|
@Override
|
|
public Exception error() {
|
|
// if in error status: this returnes exception
|
|
return error;
|
|
}
|
|
|
|
}
|