org.jboss.marshalling.JavaEE2JakartaEEClassNameTransformer Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2022 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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.jboss.marshalling;

import static java.lang.Math.abs;
import static java.util.Arrays.binarySearch;
import static java.util.Arrays.sort;

/**
 * @author Richard Opalka
 */
final class JavaEE2JakartaEEClassNameTransformer implements ClassNameTransformer {

    private static final String JAVAEE_PACKAGE_PREFIX = "javax.";
    private static final String JAKARTAEE_PACKAGE_PREFIX = "jakarta.";
    /**
     * Extracted from Batavia's Eclipse Transformer jakarta-renames.properties file
     */
    private static final String[] subpackages = new String[] {
            "activation.",
            "annotation.",
            "batch.",
            "decorator.",
            "ejb.",
            "el.",
            "enterprise.",
            "faces.",
            "inject.",
            "interceptor.",
            "jms.",
            "json.",
            "jws.",
            "mail.",
            "persistence.",
            "resource.",
            "security.auth.message.",
            "security.enterprise.",
            "security.jacc.",
            "servlet.",
            "transaction.",
            "validation.",
            "websocket.",
            "ws.rs.",
            "xml.bind.",
            "xml.soap.",
            "xml.ws."
    };

    static {
        sort(subpackages); // finalize data for use in binary search
    }

    @Override
    public String transformInput(final String className) {
        return transform(className, JAVAEE_PACKAGE_PREFIX, JAKARTAEE_PACKAGE_PREFIX);
    }

    @Override
    public String transformOutput(final String className) {
        return transform(className, JAKARTAEE_PACKAGE_PREFIX, JAVAEE_PACKAGE_PREFIX);
    }

    private String transform(final String className, final String sourcePrefix, final String targetPrefix) {
        if (className.startsWith(sourcePrefix)) {
            final String classNameNoPrefix = className.substring(sourcePrefix.length());
            final int index = abs(binarySearch(subpackages, classNameNoPrefix)) - 2;
            return index >= 0 && classNameNoPrefix.startsWith(subpackages[index]) ? targetPrefix + classNameNoPrefix : className;
        }
        return className;
    }

}