genericvalidatingpackager.java

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/*
* Copyright (c) 2000 jPOS.org.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The end-user documentation included with the redistribution,
*    if any, must include the following acknowledgment:
*    "This product includes software developed by the jPOS project
*    (http://www.jpos.org/)". Alternately, this acknowledgment may
*    appear in the software itself, if and wherever such third-party
*    acknowledgments normally appear.
*
* 4. The names "jPOS" and "jPOS.org" must not be used to endorse
*    or promote products derived from this software without prior
*    written permission. For written permission, please contact
*    [e-mail].
*
* 5. Products derived from this software may not be called "jPOS",
*    nor may "jPOS" appear in their name, without prior written
*    permission of the jPOS project.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE JPOS PROJECT OR ITS CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the jPOS Project.  For more
* information please see <http://www.jpos.org/>.
*/

package org.jpos.iso.packager;

import java.io.InputStream;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Properties;
import java.util.Stack;
import java.util.Vector;

import org.jpos.core.ConfigurationException;
import org.jpos.core.SimpleConfiguration;
import org.jpos.iso.ISOBasePackager;
import org.jpos.iso.ISOBaseValidator;
import org.jpos.iso.ISOComponent;
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOFieldPackager;
import org.jpos.iso.ISOFieldValidator;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.ISOMsgFieldPackager;
import org.jpos.iso.ISOMsgFieldValidator;
import org.jpos.iso.ISOValidator;
import org.jpos.iso.validator.ISOVException;
import org.jpos.util.LogEvent;
import org.jpos.util.Logger;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.helpers.XMLReaderFactory;


/**
 * Generic Packager that configure validators too.
 * <p>Title: jPOS</p>
 * <p>Description: Java Framework for Financial Systems</p>
 * <p>Copyright: Copyright (c) 2000 jPOS.org.  All rights reserved.</p>
 * <p>Company: www.jPOS.org</p>
 * @author Jose Eduardo Leon
 * @version 1.0
 */
public class GenericValidatingPackager extends GenericPackager implements ISOValidator {

    public GenericValidatingPackager(  ) throws ISOException{
        super();
    }
    public GenericValidatingPackager( String fileName ) throws ISOException {
        super( fileName );
    }
    public GenericValidatingPackager (InputStream stream) throws ISOException {
        super (stream);
    }

    /**
     * Convert the ISOFieldPackagers in the Hashtable
     * to an array of ISOFieldPackagers
     */
    private ISOFieldPackager[] makeFieldArray(Hashtable tab)
    {
        int maxField = 0;

        // First find the largest field number in the Hashtable
        for (Enumeration e=tab.keys(); e.hasMoreElements(); )
        {
            int n = ((Integer)e.nextElement()).intValue();
            if (n > maxField) maxField = n;
        }

        // Create the array
        ISOFieldPackager fld[] = new ISOFieldPackager[maxField+1];

        // Populate it
        for (Enumeration e=tab.keys(); e.hasMoreElements(); )
        {
            Integer key = (Integer) e.nextElement();
            fld[key.intValue()] = (ISOFieldPackager)tab.get(key);
        }
        return fld;
    }

    /**
     * It define GenericValidatorContentHandler like handler.
     */
    public void readFile(String filename) throws org.jpos.iso.ISOException {
        try {
            XMLReader reader = XMLReaderFactory.createXMLReader(
                    System.getProperty( "sax.parser",
                    "org.apache.xerces.parsers.SAXParser"));
            reader.setFeature ("http://xml.org/sax/features/validation", true);
            GenericValidatorContentHandler handler = new GenericValidatorContentHandler();
            reader.setContentHandler(handler);
            reader.setErrorHandler(handler);
            reader.parse(filename);
        }
        catch (Exception e)
        {
            e.printStackTrace();
            throw new ISOException(e);
        }
    }

    protected void setGenericPackagerParams ( Attributes atts ) {
        String maxField  = atts.getValue( "maxValidField" );
        String emitBmap  = atts.getValue( "emitBitmap" );
        String bmapfield = atts.getValue( "bitmapField" );
        if ( maxField != null )
            maxValidField = Integer.parseInt( maxField );
        if ( emitBmap != null )
            emitBitmap = Boolean.valueOf( emitBmap ).booleanValue();
        if ( bmapfield != null )
            bitmapField = Integer.parseInt( bmapfield );
    }

    public void setMsgValidator( ISOBaseValidator[] msgVlds ){
        this.mvlds = msgVlds;
    }

    public void setFieldValidator( ISOFieldValidator[] fvlds ){
        this.fvlds = fvlds;
    }

    public ISOComponent validate(ISOComponent m) throws ISOException {
        LogEvent evt = new LogEvent( this, "validate" );
        try {
            ISOComponent c;
            Hashtable fields = ((ISOMsg)m).getChildren();
            int len = 0;
            int first = 0;
            byte[] b;
            /** Field  validations **/
            for (int i=0; i < fvlds.length; i++) {
                if ( fvlds[i] != null && (c=(ISOComponent) fields.get (new Integer ( ((ISOFieldValidator)fvlds[i]).getFieldId() ))) != null ){
                    try {
                        m.set( fvlds[i].validate( c ) );
                    } catch ( ISOVException e ) {
                        if ( !e.treated() ) {
                            m.set( e.getErrComponent() );
                            e.setTreated( true );
                        }
                        evt.addMessage( "Component Validation Error." );
                        throw e;
                    }
                }
            }
            /** msg validations **/
            try {
                if ( mvlds != null ){
                    for (int i = 0; i < this.mvlds.length; i++) {
                        if ( mvlds[i] != null )
                            m = mvlds[i].validate( m );
                    }
                }
            }
            catch (ISOVException ex) {
                evt.addMessage( "Component Validation Error." );
                throw ex;
            }
            return m;
        }
        finally {
            Logger.log( evt );
        }
    }

/*  Values copied from ISOBasePackager
These can be changes using attributes on the isopackager node */
    protected  int maxValidField=128;
    protected boolean emitBitmap=true;
    protected int bitmapField=1;
    /** FieldValidator array. **/
    protected ISOValidator[] fvlds;
    /** MsgValidator array **/
    protected ISOBaseValidator[] mvlds;
    /** incr used to put validators in the same hashtable of
     *  fieldpackagers. packagers will stay on index 1, 2, 3...
     *  and validators in inc+1, inc+2, inc+3,... **/
    final int inc = 500;


    public class GenericValidatorContentHandler extends DefaultHandler {
        public void startDocument(){
            fieldStack = new Stack();
            validatorStack = new Stack();
        }

        public void endDocument() throws SAXException {
            if ( !fieldStack.isEmpty() )
                throw new SAXException ( "Format error in XML Field Description File" );
        }

        public void startElement( String namespaceURI, String localName, String qName, Attributes atts )
                throws SAXException {