EjbResolver.java

/*
 * The MIT License
 *
 * Copyright 2015 DNAstack.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.dnastack.bob.service.util;

import java.io.Serializable;
import javax.annotation.PostConstruct;
import javax.enterprise.context.ApplicationScoped;
import javax.naming.InitialContext;
import javax.naming.NamingException;

/**
 * EJB lookup executor.
 *
 * @author Miroslav Cupak (mirocupak@gmail.com)
 * @version 1.0
 */
@ApplicationScoped
public class EjbResolver implements Serializable {

    private static final long serialVersionUID = 8760528174400816670L;
    private static final String LOOKUP_PREFIX = "java:app/bob-rest/";

    private InitialContext ctx;

    @PostConstruct
    private void init() {
        try {
            ctx = new InitialContext();
        } catch (NamingException ex) {
            ctx = null;
        }
    }

    public String getClassId(Class<?> clazz) {
        return (clazz == null) ? null : LOOKUP_PREFIX + clazz.getSimpleName();
    }

    public Object resolve(String id) throws NamingException {
        if (ctx == null) {
            throw new NullPointerException("ctx");
        }
        return ctx.lookup(id);
    }
}