org.springframework.core.io.support.VfsPatternUtils Maven / Gradle / Ivy
/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed 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
*
* https://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 org.springframework.core.io.support;
import java.io.IOException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Proxy;
import java.net.URL;
import org.springframework.core.io.VfsUtils;
import org.springframework.lang.Nullable;
/**
* Artificial class used for accessing the {@link VfsUtils} methods
* without exposing them to the entire world.
*
* @author Costin Leau
* @since 3.0.3
*/
abstract class VfsPatternUtils extends VfsUtils {
@Nullable
static Object getVisitorAttributes() {
return doGetVisitorAttributes();
}
static String getPath(Object resource) {
String path = doGetPath(resource);
return (path != null ? path : "");
}
static Object findRoot(URL url) throws IOException {
return getRoot(url);
}
static void visit(Object resource, InvocationHandler visitor) throws IOException {
Object visitorProxy = Proxy.newProxyInstance(
VIRTUAL_FILE_VISITOR_INTERFACE.getClassLoader(),
new Class[] {VIRTUAL_FILE_VISITOR_INTERFACE}, visitor);
invokeVfsMethod(VIRTUAL_FILE_METHOD_VISIT, resource, visitorProxy);
}
}