methodfilterinterceptorutil.java

在Struts2中的jar包xwork的源代码.版本为2.0.7

/*
 * Copyright (c) 2002-2006 by OpenSymphony
 * All rights reserved.
 */
package com.opensymphony.xwork2.interceptor;

import java.util.Set;

import com.opensymphony.xwork2.util.TextParseUtil;

/**
 * Utility class contains common methods used by 
 * {@link com.opensymphony.xwork2.interceptor.MethodFilterInterceptor}.
 * 
 * @author tm_jee
 * @version $Date: 2006-11-23 21:33:15 +0100 (Do, 23 Nov 2006) $ $Id: MethodFilterInterceptorUtil.java 1223 2006-11-23 20:33:15Z rainerh $
 */
public class MethodFilterInterceptorUtil {
	/**
     * Static method to decide if the specified <code>method</code> should be
     * apply (not filtered) depending on the set of <code>excludeMethods</code> and 
     * <code>includeMethods</code>. 
     * 
     * <p/>
     * 
     * <ul>
     * <li>
     * 	<code>excludeMethods</code> takes precedence over <code>includeMethods</code>
     * </li>
     * 
     * <p/>
     * 
     * asterict '*' could be used to indicate all methods.
     * 
     * 
     * @param excludeMethods
     * @param includeMethods
     * @return boolean
     */
    public static boolean applyMethod(Set excludeMethods, Set includeMethods, String method) {
    	if (((excludeMethods.contains("*") && !includeMethods.contains("*"))
                || excludeMethods.contains(method))
                && !includeMethods.contains(method)) {
            return false;
        }
        return includeMethods.size() == 0 || includeMethods.contains(method) || includeMethods.contains("*");
    }
    
    /**
     * Same as {@link #applyMethod(Set, Set, String)}, except that <code>excludeMethods</code>
     * and <code>includeMethods</code> are supplied as comma separated string.
     * 
     * @param excludeMethods
     * @param includeMethods
     * @param method
     * @return boolean
     */
    public static boolean applyMethod(String excludeMethods, String includeMethods, String method) {
    	Set includeMethodsSet = TextParseUtil.commaDelimitedStringToSet(includeMethods == null? "" : includeMethods);
    	Set excludeMethodsSet = TextParseUtil.commaDelimitedStringToSet(excludeMethods == null? "" : excludeMethods);
    	
    	return applyMethod(excludeMethodsSet, includeMethodsSet, method);
    }
}