source: trunk/gsdl3/src/packages/mg/java/org/greenstone/mg/MGPassesWrapper.java@ 7452

/*
 *    MGPassesWrapper.java
 *    Copyright (C) 2002 New Zealand Digital Library, http://www.nzdl.org
 *
 *    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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package org.greenstone.mg;


/** java wrapper class for access to mg_passes in C
 *
 * the native side implemented in MGPassesWrapperImpl.c
 */

public class MGPassesWrapper
{
    static {
    System.loadLibrary("mgpassjni");
    initIDs();
    }
    
    private final char END_OF_DOCUMENT = (char) 2;

    public MGPassesWrapper() {
    initCSide();
    }

    /** initialises field and method IDs for java side to enable access on C side */
    private static native void initIDs();

    /** initialises any C side stuff */
    private native boolean initCSide();

    /** initialise the pass through the documents */
    public native boolean init();
    
    /** add a pass declaration */
    public native void addPass(char pass_type, char pass_num);

    /** set the base path */
    public native void setBasePath(String basepath);
   /** set the file name */
    public native void setFileName(String filename);

    public native void setStemOptions(String stemmer_type, int stem_method);

    public native void setInvfLevel(char level);


    /** process a Greenstone document, which may consist of many MG documents (seeparated by ^B */
    public boolean processDocument(String docs_text) {
    String [] docs = docs_text.split(String.valueOf(END_OF_DOCUMENT));
    System.err.println("num docs split into "+docs.length);
    for (int i=0; i<docs.length; i++) {
        try {
        processMGDocument(docs[i].getBytes("UTF-8"));
        } catch (Exception e) {
        e.printStackTrace();
        }
    }
    return true;
    }
    /** process a MG document */
    public native boolean processMGDocument(byte[] text);
   
    /** finalise the pass through the documents */
    public native boolean finish();
}