com.softwarewerke.htdbc.App.java Source code

Introduction

Here is the source code for com.softwarewerke.htdbc.App.java

Source

/**
 * htdbc - HyperText DataBase Connection
 * 
 * Copyright (C) 2014 by softwarewerke.com <info@softwarewerke.com>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.softwarewerke.htdbc;

import com.google.common.reflect.ClassPath;
import com.softwarewerke.htdbc.misc.Konfig;
import java.io.File;
import java.io.IOException;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.HashSet;
import java.util.Set;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.ws.rs.Path;
import javax.ws.rs.core.Application;
import org.apache.log4j.Logger;

/**
 * The resteasy Application defines classes that are resource endpoints.
 * @author peter
 */
public class App extends Application implements ServletContextListener {

    @Override
    public Set getSingletons() {

        Logger log = Logger.getLogger(getClass());

        Set set = new HashSet();

        ClassPath cp;
        try {
            cp = ClassPath.from(getClass().getClassLoader());
        } catch (IOException ex) {
            log.fatal(ex);
            return set;
        }
        String p = getClass().getPackage().getName();

        for (ClassPath.ClassInfo n : cp.getAllClasses()) {
            if (!n.getPackageName().startsWith(p)) {
                continue;
            }
            try {
                Class cl = n.load();

                if (cl.getAnnotation(Path.class) == null) {
                    continue;
                }
                if (cl.getAnnotation(Singleton.class) == null) {
                    continue;
                }
                if (!Main.isDevelopment() && cl.getAnnotation(IsDev.class) != null) {
                    continue;
                }
                set.add(cl.newInstance());
            } catch (ClassFormatError ignore) {
            } catch (Exception ex) {
                log.error(ex);
            }
        }

        set.add(new AppException());

        return set;
    }

    @Override
    public Set<Class<?>> getClasses() {
        Logger log = Logger.getLogger(getClass());

        Set set = new HashSet();

        ClassPath cp;
        try {
            cp = ClassPath.from(getClass().getClassLoader());
        } catch (IOException ex) {
            log.fatal(ex);
            return set;
        }

        String p = getClass().getPackage().getName();

        for (ClassPath.ClassInfo n : cp.getAllClasses()) {
            if (!n.getPackageName().startsWith(p)) {
                continue;
            }
            try {
                Class cl = n.load();

                if (cl.getAnnotation(Path.class) == null) {
                    continue;
                }
                if (cl.getAnnotation(Singleton.class) != null) {
                    continue;
                }
                if (!Main.isDevelopment() && cl.getAnnotation(IsDev.class) != null) {
                    continue;
                }
                set.add(cl);
            } catch (ClassFormatError ignore) {
            } catch (Exception ex) {
                log.error(ex);
            }
        }

        return set;
    }

    @Override
    public void contextInitialized(ServletContextEvent e) {

        Konfig k = new Konfig();
        File f = new File(e.getServletContext().getRealPath("/") + "/WEB-INF/config.properties");
        try {
            k.load(f);
        } catch (IOException ex) {
            System.err.println(ex);
        }

        Ds.init(k.extract());
    }

    @Override
    public void contextDestroyed(ServletContextEvent e) {
    }

    /**
     * Annotation for marking singleton java-ws resources.
     *
     * @author peter
     */
    @Target(ElementType.TYPE)
    @Retention(RetentionPolicy.RUNTIME)
    public @interface Singleton {
    }

    /**
     * Resources annotated with @IsDev are only available in development mode.
     */
    @Target(ElementType.TYPE)
    @Retention(RetentionPolicy.RUNTIME)
    public @interface IsDev {
    }

}