| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package com.opensymphony.xwork2.interceptor; |
| |
| import com.opensymphony.xwork2.ActionInvocation; |
| import com.opensymphony.xwork2.util.TextParseUtil; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| |
| /** |
| * <!-- START SNIPPET: javadoc --> |
| * |
| * <p> |
| * MethodFilterInterceptor is an abstract <code>Interceptor</code> used as |
| * a base class for interceptors that will filter execution based on method |
| * names according to specified included/excluded method lists. |
| * |
| * </p> |
| * |
| * Settable parameters are as follows: |
| * |
| * <ul> |
| * <li>excludeMethods - method names to be excluded from interceptor processing</li> |
| * <li>includeMethods - method names to be included in interceptor processing</li> |
| * </ul> |
| * |
| * <p> |
| * |
| * <b>NOTE:</b> If method name are available in both includeMethods and |
| * excludeMethods, it will be considered as an included method: |
| * includeMethods takes precedence over excludeMethods. |
| * |
| * </p> |
| * |
| * Interceptors that extends this capability include: |
| * |
| * <ul> |
| * <li>TokenInterceptor</li> |
| * <li>TokenSessionStoreInterceptor</li> |
| * <li>DefaultWorkflowInterceptor</li> |
| * <li>ValidationInterceptor</li> |
| * </ul> |
| * |
| * <!-- END SNIPPET: javadoc --> |
| * |
| * @author <a href='mailto:the_mindstorm[at]evolva[dot]ro'>Alexandru Popescu</a> |
| * @author Rainer Hermanns |
| * |
| * @see org.apache.struts2.interceptor.TokenInterceptor |
| * @see org.apache.struts2.interceptor.TokenSessionStoreInterceptor |
| * @see com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor |
| * @see com.opensymphony.xwork2.validator.ValidationInterceptor |
| */ |
| public abstract class MethodFilterInterceptor extends AbstractInterceptor { |
| |
| private static final Logger LOG = LogManager.getLogger(MethodFilterInterceptor.class); |
| |
| protected Set<String> excludeMethods = Collections.emptySet(); |
| protected Set<String> includeMethods = Collections.emptySet(); |
| |
| public void setExcludeMethods(String excludeMethods) { |
| this.excludeMethods = TextParseUtil.commaDelimitedStringToSet(excludeMethods); |
| } |
| |
| public Set<String> getExcludeMethodsSet() { |
| return excludeMethods; |
| } |
| |
| public void setIncludeMethods(String includeMethods) { |
| this.includeMethods = TextParseUtil.commaDelimitedStringToSet(includeMethods); |
| } |
| |
| public Set<String> getIncludeMethodsSet() { |
| return includeMethods; |
| } |
| |
| @Override |
| public String intercept(ActionInvocation invocation) throws Exception { |
| if (applyInterceptor(invocation)) { |
| return doIntercept(invocation); |
| } |
| return invocation.invoke(); |
| } |
| |
| protected boolean applyInterceptor(ActionInvocation invocation) { |
| String method = invocation.getProxy().getMethod(); |
| // ValidationInterceptor |
| boolean applyMethod = MethodFilterInterceptorUtil.applyMethod(excludeMethods, includeMethods, method); |
| if (!applyMethod) { |
| LOG.debug("Skipping Interceptor... Method [{}] found in exclude list.", method); |
| } |
| return applyMethod; |
| } |
| |
| /** |
| * Subclasses must override to implement the interceptor logic. |
| * |
| * @param invocation the action invocation |
| * @return the result of invocation |
| * @throws Exception in case of any errors |
| */ |
| protected abstract String doIntercept(ActionInvocation invocation) throws Exception; |
| |
| } |