Config.java

/**
 * 
 */
package jframe.core.conf;

import java.util.Map;

import jframe.core.Frame;

/**
 * <p>
 * Frame's Configuration
 * <li>load config from config.properties</li>
 * <li></li>
 * </p>
 * 
 * @ThreadSafe
 * @author dzh
 * @date Sep 12, 2013 9:17:47 PM
 * @since 1.0
 */
public interface Config extends ConfigConstants {

    void setFrame(Frame frame);

    Frame getFrame();

    /**
     * <p>
     * <li>if doesn't contain the key ,then return null.</li>
     * <li>if contain the key, then return old value</li>
     * </p>
     * 
     * @param key
     * @param value
     * @return old value or null
     */
    String modifyConfig(String key, String value);

    void clearConfig();

    /**
     * @since 1.2.0
     * @return all config
     */
    Map<String, String> getConfig();

    String getConfig(String k);

    String getConfig(String k, String defval);

    String setConfig(String k, String v);

    boolean contain(String k);

}