idset.java

一个工作流设计及定义的系统,可以直接与数据库结合进行系统工作流程的定义及应用.

/*
 * Copyright (c) 2005, John Mettraux, OpenWFE.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:
 * 
 * . Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.  
 * 
 * . 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.
 * 
 * . Neither the name of the "OpenWFE" nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
 *
 * $Id: IdSet.java,v 1.2 2005/05/17 16:41:06 jmettraux Exp $
 */

//
// IdSet.java
//
// [e-mail]
//
// generated with 
// jtmpl 1.1.01 2004/05/19 ([e-mail])
//

package openwfe.org.xdbc.nquery;

import openwfe.org.ReflectionUtils;
import openwfe.org.query.sets.Set;


/**
 * A set of Xdbc client ids.
 *
 * <p><font size=2>CVS Info :
 * <br>$Author: jmettraux $
 * <br>$Id: IdSet.java,v 1.2 2005/05/17 16:41:06 jmettraux Exp $ </font>
 *
 * @author [e-mail]
 */
public class IdSet

    implements Set

{

    /*
    private final static org.apache.log4j.Logger log = org.apache.log4j.Logger
        .getLogger(IdSet.class.getName());
    */

    //
    // CONSTANTS & co

    //
    // FIELDS

    private boolean negative = false;
    private java.util.Map content = new java.util.HashMap();

    //
    // CONSTRUCTORS

    //
    // GETTERS and SETTERS

    public java.util.Map getContent ()
    {
        return this.content;
    }

    public void setContent (final java.util.Map m)
    {
        this.content = m;
    }

    //
    // METHODS from openwfe.org.query.sets.Set

    public Object clone ()
    {
        final IdSet result = new IdSet();

        result.negative = this.negative;

        result.getContent().putAll(this.content);

        return result;
    }

    //
    // METHODS from java.util.Set

    public int size ()
    {
        return this.content.size();
    }

    public boolean contains (final Object o)
    {
        if (o instanceof Long)
            return this.content.keySet().contains(o);
        else if (o instanceof String)
            return this.content.entrySet().contains(o);
        
        throw new IllegalArgumentException
            ("contains() cannot argument of class "+o.getClass().getName());
    }

    public Object[] toArray ()
    {
        return this.content.entrySet().toArray();
    }

    public Object[] toArray (final Object[] array)
    {
        return this.content.entrySet().toArray(array);
    }
    
    public boolean add (final Object o)
    {
        final Object os[] = (Object[])o;
        this.content.put(os[1], os[0]);

        return true;
    }

    public boolean remove (final Object o)
    {
        if (o instanceof Long)
        {
            return (this.content.remove(o) != null);
        }

        if ( ! (o instanceof String))
        {
            throw new IllegalArgumentException
                ("remove() cannot proceed with an argument of class "+
                 o.getClass().getName());
        }

        final java.util.Iterator it = this.content.entrySet().iterator();
        while (it.hasNext())
        {
            final java.util.Map.Entry e = (java.util.Map.Entry)it.next();

            if (e.getValue().equals(o))
                return (this.content.remove(e.getKey()) != null);
        }

        return false;
    }

    public java.util.Iterator iterator ()
    {
        return this.content.keySet().iterator();
    }

    public boolean containsAll (final java.util.Collection c)
    {
        return false;
    }

    public boolean addAll (final java.util.Collection c)
    {
        return false;
    }

    public boolean retainAll (final java.util.Collection c)
    {
        return false;
    }

    public boolean removeAll (final java.util.Collection c)
    {
        return false;
    }

    public void clear ()
    {
        this.content.clear();
    }

    public boolean isEmpty ()
    {
        return this.content.isEmpty();
    }

    //
    // METHODS from openwfe.org.query.sets.Set

    /**
     * Returns true if this set is negative (ie an inverted set).
     */
    public boolean isNegative ()
    {
        return this.negative;
    }

    /**
     * Returns true if the st is positive.
     */
    public boolean isPositive ()
    {
        return ! this.negative;
    }

    /**
     * Sets the positive/negative state of the set.
     */
    public void setNegative (final boolean b)
    {
        this.negative = b;
    }

    /**
     * Inverts the state of the set.
     */
    public void invert ()
    {
        this.negative = ( ! this.negative);
    }

    /**
     * Returns a new (and positive) empty instance of this set.
     */
    public Set newInstance ()
    {
        return (Set)ReflectionUtils.newInstance(this);
    }

    //
    // METHODS

    public void add (final Long documentId, final String clientId)
    {
        this.content.put(documentId, clientId);
    }

    public void add (final long documentId, final String clientId)
    {
        this.content.put(new Long(documentId), clientId);
    }

    public String getClientId (long docId)
    {
        return getClientId(new Long(docId));
    }

    public String getClientId (Long docId)
    {
        return (String)this.content.get(docId);
    }

    //
    // STATIC METHODS

    /**
     * Extracts document ids from an SQL result set.
     */
    public static IdSet extractDocumentIds (final java.sql.ResultSet rs)
        throws java.sql.SQLException
    {
        final IdSet result = new IdSet();

        while (rs.next()) 
            result.add(new Long(rs.getLong(1)), rs.getString(2));

        return result;
    }

}