org.apache.jasper.compiler.JarScannerFactory Maven / Gradle / Ivy
/*
* 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 org.apache.jasper.compiler;
import javax.servlet.ServletContext;
import org.apache.tomcat.JarScanner;
import org.apache.tomcat.util.scan.StandardJarScanner;
/**
* Provide a mechanism for Jasper to obtain a reference to the JarScanner
* implementation.
*/
public class JarScannerFactory {
private JarScannerFactory() {
// Don't want any instances so hide the default constructor.
}
/**
* Obtain the {@link JarScanner} associated with the specified {@link
* ServletContext}. It is obtained via a context parameter.
* @param ctxt The Servlet context
* @return a scanner instance
*/
public static JarScanner getJarScanner(ServletContext ctxt) {
JarScanner jarScanner =
(JarScanner) ctxt.getAttribute(JarScanner.class.getName());
if (jarScanner == null) {
ctxt.log(Localizer.getMessage("jsp.warning.noJarScanner"));
jarScanner = new StandardJarScanner();
}
return jarScanner;
}
}