com.sun.jersey.api.core.ClassNamesResourceConfig Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2010-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.jersey.api.core;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
/**
* A mutable implementation of {@link DefaultResourceConfig} that explicitly
* declares for root resource and provider classes.
*
* @author [email protected]
*/
public class ClassNamesResourceConfig extends DefaultResourceConfig {
/**
* The property value MUST be an instance String or String[]. Each String
* instance represents one or more class names that MUST be separated by ';',
* ',' or ' ' (space).
*/
public static final String PROPERTY_CLASSNAMES = "com.sun.jersey.config.property.classnames";
/**
* Declare an array of root resource and provider classes.
*
* @param classes the array of classes.
*/
public ClassNamesResourceConfig(Class... classes) {
super();
for (Class c : classes)
getClasses().add(c);
}
/**
* Declare root resource and provider class as an array of class names.
*
* @param classNames the array of classes.
*/
public ClassNamesResourceConfig(String... classNames) {
super(getClasses(classNames));
}
/**
* Declare root resource and provider classes declaring the class names as a
* property of {@link ResourceConfig}.
*
* @param props the property bag that contains the property
* {@link #PROPERTY_CLASSNAMES}.
*/
public ClassNamesResourceConfig(Map props) {
super(getClasses(props));
setPropertiesAndFeatures(props);
}
private static Set> getClasses(Map props) {
Object v = props.get(PROPERTY_CLASSNAMES);
if (v == null) {
throw new IllegalArgumentException(PROPERTY_CLASSNAMES + " property is missing");
}
Set> s = getClasses(v);
if (s.isEmpty()) {
throw new IllegalArgumentException(PROPERTY_CLASSNAMES + " contains no classes");
}
return s;
}
private static Set> getClasses(Object param) {
return convertToSet(_getClasses(param));
}
private static Set> getClasses(String[] elements) {
return convertToSet(getElements(elements, ResourceConfig.COMMON_DELIMITERS));
}
private static Set> convertToSet(String[] classes) {
Set> s = new LinkedHashSet>();
for (String c : classes) {
try {
s.add(getClassLoader().loadClass(c));
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
return s;
}
private static String[] _getClasses(Object param) {
if (param instanceof String) {
return getElements(new String[] { (String)param }, ResourceConfig.COMMON_DELIMITERS);
} else if (param instanceof String[]) {
return getElements((String[])param, ResourceConfig.COMMON_DELIMITERS);
} else {
throw new IllegalArgumentException(PROPERTY_CLASSNAMES + " must " +
"have a property value of type String or String[]");
}
}
private static ClassLoader getClassLoader() {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
return (classLoader == null) ? ClassNamesResourceConfig.class.getClassLoader() : classLoader;
}
}