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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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/*
 * Copyright (C) 2007 The Guava 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
 *
 * 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.glassfish.jersey.internal.guava;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import static org.glassfish.jersey.internal.guava.Preconditions.checkNotNull;

/**
 * Contains static utility methods pertaining to primitive types and their
 * corresponding wrapper types.
 *
 * @author Kevin Bourrillion
 * @since 1.0
 */
public final class Primitives {
    /**
     * A map from primitive types to their corresponding wrapper types.
     */
    private static final Map, Class> PRIMITIVE_TO_WRAPPER_TYPE;

    static {
        Map, Class> primToWrap = new HashMap, Class>(16);

        add(primToWrap, boolean.class, Boolean.class);
        add(primToWrap, byte.class, Byte.class);
        add(primToWrap, char.class, Character.class);
        add(primToWrap, double.class, Double.class);
        add(primToWrap, float.class, Float.class);
        add(primToWrap, int.class, Integer.class);
        add(primToWrap, long.class, Long.class);
        add(primToWrap, short.class, Short.class);
        add(primToWrap, void.class, Void.class);

        PRIMITIVE_TO_WRAPPER_TYPE = Collections.unmodifiableMap(primToWrap);
    }

    private Primitives() {
    }

    private static void add(Map, Class> forward,
                            Class key, Class value) {
        forward.put(key, value);
    }

    /**
     * Returns the corresponding wrapper type of {@code type} if it is a primitive
     * type; otherwise returns {@code type} itself. Idempotent.
     *      *     wrap(int.class) == Integer.class
     *     wrap(Integer.class) == Integer.class
     *     wrap(String.class) == String.class
     * 
     */
    public static  Class wrap(Class type) {
        checkNotNull(type);

        // cast is safe: long.class and Long.class are both of type Class
        @SuppressWarnings("unchecked")
        Class wrapped = (Class) PRIMITIVE_TO_WRAPPER_TYPE.get(type);
        return (wrapped == null) ? type : wrapped;
    }

}