org.talend.sdk.component.tools.BaseTask Maven / Gradle / Ivy

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A shared module by Maven and Gradle integration for common tasks.
There is a newer version: 10.57.0
/**
 * Copyright (C) 2006-2020 Talend Inc. - www.talend.com
 *
 * 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.talend.sdk.component.tools;

import static java.util.Optional.ofNullable;

import java.io.File;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.net.MalformedURLException;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.function.Predicate;
import java.util.stream.Stream;

import org.apache.xbean.finder.AnnotationFinder;
import org.apache.xbean.finder.archive.Archive;
import org.apache.xbean.finder.archive.ClasspathArchive;
import org.apache.xbean.finder.archive.CompositeArchive;

import lombok.AccessLevel;
import lombok.AllArgsConstructor;

@AllArgsConstructor(access = AccessLevel.PACKAGE)
abstract class BaseTask implements Runnable {

    protected final File[] classes;

    protected AnnotationFinder newFinder() {
        return new AnnotationFinder(new CompositeArchive(Stream.of(classes).map(c -> {
            try {
                return ClasspathArchive.archive(Thread.currentThread().getContextClassLoader(), c.toURI().toURL());
            } catch (final MalformedURLException e) {
                throw new IllegalArgumentException(e);
            }
        }).toArray(Archive[]::new))) {

            private final Map, List> fieldCache = new HashMap<>();

            private final Map, List>> classCache = new HashMap<>();

            @Override
            public List findAnnotatedFields(final Class annotation) {
                return fieldCache.computeIfAbsent(annotation, a -> super.findAnnotatedFields(annotation));
            }

            @Override
            public List> findAnnotatedClasses(final Class annotation) {
                return classCache.computeIfAbsent(annotation, a -> super.findAnnotatedClasses(annotation));
            }
        };
    }

    protected Predicate> apiTester(final Class api) {
        return a -> a.isAnnotationPresent(api);
    }

    protected ResourceBundle findResourceBundle(final Class component) {
        final String baseName = ofNullable(component.getPackage()).map(p -> p.getName() + ".").orElse("") + "Messages";
        try {
            return ResourceBundle.getBundle(baseName, getLocale(), Thread.currentThread().getContextClassLoader());
        } catch (final MissingResourceException mre) {
            return null;
        }
    }

    protected Locale getLocale() {
        return Locale.ROOT;
    }

}