com.openpojo.reflection.java.packageloader.impl.FilePackageLoader Maven / Gradle / Ivy

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This project was born out of a need to validate all POJOs (Plain Old Java Object) are behaving correctly. This project has two main aspects to it: * Make Testing as easy as possible. * Simplifying identity management (hashCode / equals) using annotation.

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/*
 * Copyright (c) 2010-2015 Osman Shoukry
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU Lesser General Public License as published by
 *    the Free Software Foundation, either version 3 of the License or 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 Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public License
 *    along with this program.  If not, see .
 */

package com.openpojo.reflection.java.packageloader.impl;

import java.io.File;
import java.lang.reflect.Type;
import java.net.URL;
import java.util.HashSet;
import java.util.Set;

import com.openpojo.reflection.exception.ReflectionException;
import com.openpojo.reflection.java.packageloader.PackageLoader;

/**
 * @author oshoukry
 */
public final class FilePackageLoader extends PackageLoader {

    public FilePackageLoader(final URL packageURL, final String packageName) {
        super(packageURL, packageName);
    }

    @Override
    public Set getTypes() {

        final Set types = new HashSet();

        for (final File entry : getEntries()) {
            try {
                final String className = fromJDKPathToJDKPackage(packageName) + JDKPACKAGE_DELIMETER + entry.getName();
                final Class classEntry = getAsClass(className);
                if (classEntry != null) {
                    types.add(classEntry);
                }
            } catch (final ClassNotFoundException classNotFoundException) { // entry wasn't a class
            }
        }
        return types;
    }

    @Override
    public Set getSubPackages() {
        final Set subPaths = new HashSet();
        for (final File file : getEntries()) {
            if (file.isDirectory()) {
                subPaths.add(fromJDKPathToJDKPackage(packageName) + JDKPACKAGE_DELIMETER + file.getName());
            }
        }
        return subPaths;
    }

    private File[] getEntries() {
        // convert toURI to decode %20 for spaces, etc.
        URLToFileSystemAdapter urlToFileSystemAdapter = new URLToFileSystemAdapter(packageURL);

        File directory = urlToFileSystemAdapter.getAsFile();
        File[] fileList = directory.listFiles();

        if (fileList == null) {
            throw ReflectionException.getInstance("Failed to retrieve entries in path: ["
                    + directory.getAbsolutePath() + "] created from URI: [" + urlToFileSystemAdapter.getAsURI() + "]."
                    + "Please report this issue @ https://code.google.com/p/openpojo/issues");
        }
        return fileList;
    }


}