baseproperties.java

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package ranab.util;

import java.io.*;
import java.net.*;
import java.util.*;
import java.text.*;

/**
 * This class encapsulates <code>java.util.Properties</code> to
 * add java primitives and some other java classes.
 * 
 * @author <a href="mailto:[e-mail]">Rana Bhattacharyya</a>
 */
public
class BaseProperties extends Properties {
    
    
    /**
     * Default constructor.
     */
    public BaseProperties()  {
    }
    
    /**
     * Load existing property.
     */
    public BaseProperties(Properties prop)  {
        super(prop);
    }
    
    /**
     * Load properties from file
     */
    public BaseProperties(File fl) throws IOException {
        FileInputStream fis = new FileInputStream(fl);
        load(fis);
        fis.close();
    }
    
    /**
     * Load properties from <code>InputStream</code>
     */
    public BaseProperties(InputStream is) throws IOException  {
        load(is);
    }
    
    
    //////////////////////////////////////////
    ////////  Properties Get Methods  ////////
    //////////////////////////////////////////
    /**
     * Get boolean value.
     */
    public boolean getBoolean(String str) throws PropertiesException {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }

        return str.toLowerCase().equals("true");
    }

    public boolean getBoolean(String str, boolean bol)  {
        try {
            return getBoolean(str);
        } catch (PropertiesException ex) {
            return bol;
        }
    }


    /**
     * Get integer value.
     */
    public int getInteger(String str) throws PropertiesException  {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }

        try {
            return Integer.parseInt(str);
        } catch (NumberFormatException ex) {
            throw new PropertiesException(ex);
        }
    }

    public int getInteger(String str, int intVal)  {
        try {
            return getInteger(str);
        } catch (PropertiesException ex) {
            return intVal;
        }
    }


    /**
     * Get long value.
     */
    public long getLong(String str) throws PropertiesException {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }

        try {
            return Long.parseLong(str);
        } catch (NumberFormatException ex) {
            throw new PropertiesException(ex);
        }
    }

    public long getLong(String str, long val)  {
        try {
            return getLong(str);
        } catch (PropertiesException ex) {
            return val;
        }
    }


    /**
     * Get double value.
     */
    public double getDouble(String str) throws PropertiesException  {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }

        try {
            return Double.parseDouble(str); 
        } catch (NumberFormatException ex) {
            throw new PropertiesException(ex);
        }
    }

    public double getDouble(String str, double doubleVal)  {
        try {
            return getDouble(str);
        } catch (PropertiesException ex) {
            return doubleVal; 
        }
    } 
    
    /**
     * Get <code>InetAddress</code>.
     */
    public InetAddress getInetAddress(String str) throws PropertiesException {
        str = getProperty(str);
        if(str == null) {
            throw new PropertiesException(str + " : not found");
        }
        
        try {
            return InetAddress.getByName(str);
        }
        catch(UnknownHostException ex) {
            throw new PropertiesException("Host " + str + " not found");
        }
    }
    
    public InetAddress getInetAddress(String str, InetAddress addr) {
        try {
            return getInetAddress(str);
        }
        catch(PropertiesException ex) {
            return addr;
        }
    }
    
    /**
     * Get <code>File</code> object.
     */
    public File getFile(String str) throws PropertiesException  {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }
        return new File(str);
    }

    public File getFile(String str, File fl)  {
        try {
            return getFile(str);
        } catch (PropertiesException ex) {
            return fl;
        }

    }


    /**
     * Get <code>Class</code> object
     */
    public Class getClass(String str) throws PropertiesException  {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }

        try {
            return Class.forName(str);
        } catch (ClassNotFoundException ex) {
            throw new PropertiesException(ex);
        }
    }

    public Class getClass(String str, Class cls)  {
        try {
            return getClass(str);
        } catch (PropertiesException ex) {
            return cls;
        }
    } 


    /**
     * Get <code>TimeZone</code>
     */
    public TimeZone getTimeZone(String str) throws PropertiesException  {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }
        return TimeZone.getTimeZone(str);
    }

    public TimeZone getTimeZone(String str, TimeZone tz)  {
        try {
            return getTimeZone(str);
        } catch (PropertiesException ex) {
            return tz;
        }
    }


    /**
     * Get <code>DateFormat</code> object.
     */
    public SimpleDateFormat getDateFormat(String str) throws PropertiesException  {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str +  " : not found");
        }
        return new SimpleDateFormat(str);
    }

    public SimpleDateFormat getDateFormat(String str, SimpleDateFormat fmt)  {
        try {
            return getDateFormat(str);
        } catch (PropertiesException ex) {
            return fmt;
        }
    }


    /**
     * Get <code>Date</code> object.
     */
    public Date getDate(String str, DateFormat fmt) throws PropertiesException  {
        str = getProperty(str);
        if (str == null) {
            throw new PropertiesException(str + " : not found");
        }

        try {
            return fmt.parse(str);
        } catch (ParseException ex) {
            throw new PropertiesException(ex);
        }
    }

    public Date getDate(String str, DateFormat fmt, Date dt)  {
        try {
            return getDate(str, fmt);
        } catch (PropertiesException ex) {
            return dt;
        }
    }


    //////////////////////////////////////////
    ////////  Properties Set Methods  ////////
    //////////////////////////////////////////
    /**
     * Set boolean value.
     */
    public void setProperty(String key, boolean val)  {
        setProperty(key, String.valueOf(val));
    }

    /**
     * Set integer value.
     */
    public void setProperty(String key, int val)  {
        setProperty(key, String.valueOf(val));
    }


    /**
     * Set double value.
     */
    public void setProperty(String key, double val)  {
        setProperty(key, String.valueOf(val));
    }

    /**
     * Set float value.
     */
    public void setProperty(String key, float val)  {
        setProperty(key, String.valueOf(val));
    } 

    /**
     * Set long value.
     */
    public void setProperty(String key, long val)  {
        setProperty(key, String.valueOf(val));
    }
    
    /**
     * Set <code>InetAddress</code>.
     */
    public void setInetAddress(String key, InetAddress val) {
        setProperty(key, val.getHostAddress());
    }
     
    /**
     * Set <code>File</code> object.
     */
    public void setProperty(String key, File val)  {
        setProperty(key, val.getAbsolutePath());
    }

    /**
     * Set <code>DateFormat</code> object.
     */
    public void setProperty(String key, SimpleDateFormat val)  {
        setProperty(key, val.toPattern());
    }

    /**
     * Set <code>TimeZone</code> object.
     */
    public void setProperty(String key, TimeZone val)  {
        setProperty(key, val.getID());
    }

    /**
     * Set <code>Date</code> object.
     */
    public void setProperty(String key, Date val, DateFormat fmt)  {
        setProperty(key, fmt.format(val));
    }

    /**
     * Set <code>Class</code> object.
     */
    public void setProperty(String key, Class val)  {
        setProperty(key, val.getName());
    }

}