datasourceconfig.java

这是一个轻便的j2ee的web应用框架,是一个在多个项目中运用的实际框架,采用struts,hebinate,xml等技术,有丰富的tag,role,navigation,session,dictio

/*
 * $Header: /sfroot/cvs/esimple/src/core/org/apache/struts/config/DataSourceConfig.java,v 1.1.1.1 2004/09/08 06:38:33 lava Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/09/08 06:38:33 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2002 The Apache Software Foundation.  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 acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Struts", and "Apache Software
 *    Foundation" 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 "Apache"
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 * 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 Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
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 */


package org.apache.struts.config;


import java.io.Serializable;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.struts.Globals;


/**
 * <p>A JavaBean representing the configuration information of a
 * <code>&lt;data-source&gt;</code> element from a Struts
 * configuration file.</p>
 *
 * <p><strong>WARNING</strong> - The properties of this configuration bean
 * are recognized by the default data source implementation, but some or all
 * of them may be ignored by custom data source implementations.</p>
 *
 * @author Craig R. McClanahan
 * @version $Revision: 1.1.1.1 $ $Date: 2004/09/08 06:38:33 $
 * @since Struts 1.1
 */

public class DataSourceConfig implements Serializable {



    // ----------------------------------------------------- Instance Variables


    /**
     * Has this component been completely configured?
     */
    protected boolean configured = false;


    // ------------------------------------------------------------- Properties


    /**
     * The servlet context attribute key under which this data source
     * is stored and made available.
     */
    protected String key = Globals.DATA_SOURCE_KEY;

    public String getKey() {
        return (this.key);
    }

    public void setKey(String key) {
        if (configured) {
            throw new IllegalStateException("Configuration is frozen");
        }
        this.key = key;
    }


    /**
     * The custom configuration properties for this data source implementation.
     */
    protected HashMap properties = new HashMap();

    public Map getProperties() {
        return (this.properties);
    }


    /**
     * The fully qualified class name of the <code>javax.sql.DataSource</code>
     * implementation class.
     */
    protected String type = "org.apache.struts.util.GenericDataSource";

    public String getType() {
        return (this.type);
    }

    public void setType(String type) {
        if (configured) {
            throw new IllegalStateException("Configuration is frozen");
        }
        this.type = type;
    }


    // --------------------------------------------------------- Public Methods


    /**
     * Add a new custom configuration property.
     *
     * @param name Custom property name
     * @param value Custom property value
     */
    public void addProperty(String name, String value) {

        if (configured) {
            throw new IllegalStateException("Configuration is frozen");
        }
        properties.put(name, value);

    }


    /**
     * Freeze the configuration of this data source.
     */
    public void freeze() {

        configured = true;

    }


    /**
     * Return a String representation of this object.
     */
    public String toString() {

        StringBuffer sb = new StringBuffer("DataSourceConfig[");
        sb.append("key=");
        sb.append(key);
        sb.append(",type=");
        sb.append(type);
        Iterator names = properties.keySet().iterator();
        while (names.hasNext()) {
            String name = (String) names.next();
            String value = (String) properties.get(name);
            sb.append(',');
            sb.append(name);
            sb.append('=');
            sb.append(value);
        }
        sb.append("]");
        return (sb.toString());

    }


}