configparser.java

Java Database connection pool

/*
 *  PoolMan Java Object Pooling and Caching Library
 *  Copyright (C) 1999-2001 The Code Studio
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  The full license is located at the root of this distribution
 *  in the LICENSE file.
 */
package com.codestudio.management;

import com.codestudio.PoolManConstants;
import org.xml.sax.AttributeList;
import org.xml.sax.HandlerBase;

import java.util.ArrayList;
import java.util.Properties;

/**
 * SAXParser used by Configurator to parse the
 * poolman.xml file. It returns Collections of
 * generic pool properties, JDBC pool properties,
 * and admin-agent properties.
 */
public class ConfigParser extends HandlerBase {

    private ArrayList dbProps;
    private ArrayList genericProps;
    private Properties adminProps;
    private boolean jmxManagement = PoolManConstants.DEFAULT_USE_JMX;
    private String currentSet;
    private String currentName;
    private StringBuffer currentValue = new StringBuffer();


    public ConfigParser() {
        this.dbProps = new ArrayList();
        this.genericProps = new ArrayList();
    }

    public ArrayList getDataSourceProperties() {
        return this.dbProps;
    }

    public ArrayList getGenericProperties() {
        return this.genericProps;
    }

    public Properties getAdminProps() {
        return this.adminProps;
    }

    public boolean isManagementJMX() {
        return this.jmxManagement;
    }

    public void startElement(String name, AttributeList attributes) {

        currentValue.delete(0, currentValue.length());
        this.currentName = name;

        if (name.toLowerCase().equals("datasource")) {
            this.currentSet = "datasource";
            dbProps.add(new Properties());
        }
        else if (name.toLowerCase().equals("objectpool")) {
            this.currentSet = "generic";
            genericProps.add(new Properties());
        }
        else if (name.toLowerCase().equals("admin-agent")) {
            this.currentSet = "admin-agent";
            this.adminProps = new Properties();
        }
        else if (name.toLowerCase().equals("management-mode")) {
            this.currentSet = "management-mode";
        }
        else if (name.equals("poolman") || name.equals("MLET")) {
            this.currentSet = "ignorable";
        }

    }

    public void characters(char[] ch, int start, int length) {
        currentValue.append(ch, start, length);
    }

    public void endElement(String name) {
        if (this.currentSet.equals("datasource")) {
            Properties p = (Properties) dbProps.get(dbProps.size() - 1);
            p.put(name.toLowerCase(), currentValue.toString().trim());
        }
        else if (this.currentSet.equals("generic")) {
            Properties p = (Properties) genericProps.get(genericProps.size() - 1);
            p.put(name.toLowerCase(), currentValue.toString().trim());
        }
        else if (this.currentSet.equals("admin-agent")) {
            adminProps.setProperty(name.toLowerCase(), currentValue.toString().trim());
        }
        else if (this.currentSet.equals("management-mode")) {
            if (currentValue.toString().toLowerCase().trim().equals("jmx"))
                this.jmxManagement = true;
        }
    }

    class ConfigElement {

        String name;
        String value;
        String datatype;
        ConfigElement parent;
        ArrayList children;


        ConfigElement(String name, String value, String datatype) {
            this.name = name;
            this.value = value;
            this.datatype = datatype;
            this.parent = null;
            this.children = new ArrayList();
        }

        String getValue() {
            return this.value;
        }

        void setValue(String value) {
            this.value = value;
        }

        boolean hasChildren() {
            if (this.children.size() > 0)
                return true;
            return false;
        }

        ConfigElement getParent() {
            return this.parent;
        }

        ArrayList getChildren() {
            return this.children;
        }

        void addChild(ConfigElement child) {
            this.children.add(child);
        }

    }
}