001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.component.file;
018
019 import java.lang.reflect.Method;
020
021 import org.apache.camel.util.ObjectHelper;
022 import static org.apache.camel.util.CollectionHelper.collectionAsCommaDelimitedString;
023
024 /**
025 * File filter using Spring's AntPathMatcher.
026 * <p/>
027 * Exclude take precedence over includes. If a file match both exclude and include it will be regarded as excluded.
028 */
029 public class AntPathMatcherGenericFileFilter implements GenericFileFilter {
030 private static final String ANTPATHMATCHER_CLASSNAME = "org.apache.camel.spring.util.SpringAntPathMatcherFileFilter";
031
032 private String[] excludes;
033 private String[] includes;
034
035 private Object filter;
036 private Method includesMethod;
037 private Method excludesMethod;
038 private Method acceptsMethod;
039
040 public boolean accept(GenericFile file) {
041 try {
042 synchronized (this) {
043 if (filter == null) {
044 init();
045 }
046 }
047
048 // invoke setIncludes(String), must using string type as invoking with string[] does not work
049 ObjectHelper.invokeMethod(includesMethod, filter, collectionAsCommaDelimitedString(includes));
050
051 // invoke setExcludes(String), must using string type as invoking with string[] does not work
052 ObjectHelper.invokeMethod(excludesMethod, filter, collectionAsCommaDelimitedString(excludes));
053
054 // invoke acceptPathName(String)
055 String path = file.getRelativeFilePath();
056 return (Boolean) ObjectHelper.invokeMethod(acceptsMethod, filter, path);
057
058 } catch (NoSuchMethodException e) {
059 throw new TypeNotPresentException(ANTPATHMATCHER_CLASSNAME, e);
060 }
061 }
062
063 @SuppressWarnings("unchecked")
064 private void init() throws NoSuchMethodException {
065 // we must use reflection to invoke the AntPathMatcherFileFilter that reside in camel-spring.jar
066 // and we don't want camel-ftp to have runtime dependency on camel-spring.jar
067 Class clazz = ObjectHelper.loadClass(ANTPATHMATCHER_CLASSNAME);
068 ObjectHelper.notNull(clazz, ANTPATHMATCHER_CLASSNAME + " not found in classpath. camel-spring.jar is required in the classpath.");
069
070 filter = ObjectHelper.newInstance(clazz);
071
072 includesMethod = filter.getClass().getMethod("setIncludes", String.class);
073 excludesMethod = filter.getClass().getMethod("setExcludes", String.class);
074 acceptsMethod = filter.getClass().getMethod("acceptPathName", String.class);
075 }
076
077 public String[] getExcludes() {
078 return excludes;
079 }
080
081 public void setExcludes(String[] excludes) {
082 this.excludes = excludes;
083 }
084
085 public String[] getIncludes() {
086 return includes;
087 }
088
089 public void setIncludes(String[] includes) {
090 this.includes = includes;
091 }
092
093 /**
094 * Sets excludes using a single string where each element can be separated with comma
095 */
096 public void setExcludes(String excludes) {
097 setExcludes(excludes.split(","));
098 }
099
100 /**
101 * Sets includes using a single string where each element can be separated with comma
102 */
103 public void setIncludes(String includes) {
104 setIncludes(includes.split(","));
105 }
106
107 }