context.java

来自「pojo的mvc框架」· Java 代码 · 共 46 行

package xyz.frame.scope;

/**
 * A simple scope (context).
 * 
 * @author Guilherme Silveira
 */
public interface Context {
	/**
	 * Sets an attribute
	 * 
	 * @param name
	 *            name
	 * @param value
	 *            value
	 */
	void setAttribute(String name, Object value);

	/**
	 * Retrieves an attribute
	 * 
	 * @param name
	 *            name
	 * @return value or null if not found
	 */
	Object getAttribute(String name);

	/**
	 * Whether it contains an attribute
	 * 
	 * @param name
	 *            name
	 * @return true if contained
	 */
	boolean hasAttribute(String name);

	/**
	 * Removes an attribute
	 * 
	 * @param name
	 *            name
	 * @return value
	 */
	Object removeAttribute(String name);
}