parameters.java

pastry的java实现的2.0b版

/*************************************************************************

"FreePastry" Peer-to-Peer Application Development Substrate 

Copyright 2002, Rice University. All rights reserved.

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- Redistributions in binary form must reproduce the above copyright
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********************************************************************************/
/*
 *  Created on May 26, 2005
 */
package rice.environment.params;

import java.io.IOException;
import java.net.*;

/**
 * @version $Id: pretty.settings 2305 2005-03-11 20:22:33Z jeffh $
 * @author Jeff Hoye
 */
public interface Parameters {
  //
  /**
   * DESCRIBE THE METHOD
   *
   * @param name DESCRIBE THE PARAMETER
   */
  public void remove(String name);

  /**
   * DESCRIBE THE METHOD
   *
   * @param name DESCRIBE THE PARAMETER
   * @return DESCRIBE THE RETURN VALUE
   */
  public boolean contains(String name);

  /**
   * DESCRIBE THE METHOD
   *
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  public void store() throws IOException;

  // getters
  /**
   * Gets the String attribute of the Parameters object
   *
   * @param paramName DESCRIBE THE PARAMETER
   * @return The String value
   */
  public String getString(String paramName);

  /**
   * Gets the StringArray attribute of the Parameters object
   *
   * @param paramName DESCRIBE THE PARAMETER
   * @return The StringArray value
   */
  public String[] getStringArray(String paramName);

  /**
   * Gets the Int attribute of the Parameters object
   *
   * @param paramName DESCRIBE THE PARAMETER
   * @return The Int value
   */
  public int getInt(String paramName);

  /**
   * Gets the Double attribute of the Parameters object
   *
   * @param paramName DESCRIBE THE PARAMETER
   * @return The Double value
   */
  public double getDouble(String paramName);

  /**
   * Gets the Float attribute of the Parameters object
   *
   * @param paramName DESCRIBE THE PARAMETER
   * @return The Float value
   */
  public float getFloat(String paramName);

  /**
   * Gets the Long attribute of the Parameters object
   *
   * @param paramName DESCRIBE THE PARAMETER
   * @return The Long value
   */
  public long getLong(String paramName);

  /**
   * Gets the Boolean attribute of the Parameters object
   *
   * @param paramName DESCRIBE THE PARAMETER
   * @return The Boolean value
   */
  public boolean getBoolean(String paramName);

  /**
   * String format is dnsname ex: "computer.school.edu"
   *
   * @param paramName
   * @return
   * @throws UnknownHostException
   */
  public InetAddress getInetAddress(String paramName) throws UnknownHostException;


  /**
   * String format is name:port ex: "computer.school.edu:1984"
   *
   * @param paramName
   * @return
   * @exception UnknownHostException DESCRIBE THE EXCEPTION
   */
  public InetSocketAddress getInetSocketAddress(String paramName) throws UnknownHostException;

  /**
   * String format is comma seperated. ex:
   * "computer.school.edu:1984,computer2.school.edu:1984,computer.school.edu:1985"
   *
   * @param paramName
   * @return
   * @exception UnknownHostException DESCRIBE THE EXCEPTION
   */
  public InetSocketAddress[] getInetSocketAddressArray(String paramName) throws UnknownHostException;

  // setters
  /**
   * Sets the String attribute of the Parameters object
   *
   * @param paramName The new String value
   * @param val The new String value
   */
  public void setString(String paramName, String val);

  /**
   * Sets the StringArray attribute of the Parameters object
   *
   * @param paramName The new StringArray value
   * @param val The new StringArray value
   */
  public void setStringArray(String paramName, String[] val);

  /**
   * Sets the Int attribute of the Parameters object
   *
   * @param paramName The new Int value
   * @param val The new Int value
   */
  public void setInt(String paramName, int val);

  /**
   * Sets the Double attribute of the Parameters object
   *
   * @param paramName The new Double value
   * @param val The new Double value
   */
  public void setDouble(String paramName, double val);

  /**
   * Sets the Float attribute of the Parameters object
   *
   * @param paramName The new Float value
   * @param val The new Float value
   */
  public void setFloat(String paramName, float val);

  /**
   * Sets the Long attribute of the Parameters object
   *
   * @param paramName The new Long value
   * @param val The new Long value
   */
  public void setLong(String paramName, long val);

  /**
   * Sets the Boolean attribute of the Parameters object
   *
   * @param paramName The new Boolean value
   * @param val The new Boolean value
   */
  public void setBoolean(String paramName, boolean val);

  /**
   * Sets the InetAddress attribute of the Parameters object
   *
   * @param paramName The new InetAddress value
   * @param val The new InetAddress value
   */
  public void setInetAddress(String paramName, InetAddress val);

  /**
   * Sets the InetSocketAddress attribute of the Parameters object
   *
   * @param paramName The new InetSocketAddress value
   * @param val The new InetSocketAddress value
   */
  public void setInetSocketAddress(String paramName, InetSocketAddress val);

  /**
   * Sets the InetSocketAddressArray attribute of the Parameters object
   *
   * @param paramName The new InetSocketAddressArray value
   * @param val The new InetSocketAddressArray value
   */
  public void setInetSocketAddressArray(String paramName, InetSocketAddress[] val);

  /**
   * Adds a feature to the ChangeListener attribute of the Parameters object
   *
   * @param p The feature to be added to the ChangeListener attribute
   */
  public void addChangeListener(ParameterChangeListener p);

  /**
   * DESCRIBE THE METHOD
   *
   * @param p DESCRIBE THE PARAMETER
   */
  public void removeChangeListener(ParameterChangeListener p);
}