com.sos.scheduler.engine.kernel.util.ClassResource.java Source code

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Here is the source code for com.sos.scheduler.engine.kernel.util.ClassResource.java

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/**
 * Copyright (C) 2014 BigLoupe http://bigloupe.github.io/SoS-JobScheduler/
 *
 * 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
 */
/********************************************************* begin of preamble
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** Copyright (C) 2003-2012 Software- und Organisations-Service GmbH. 
** All rights reserved.
**
** This file may be used under the terms of either the 
**
**   GNU General Public License version 2.0 (GPL)
**
**   as published by the Free Software Foundation
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**   LICENSE.GPL included in the packaging of this file. 
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**  
**   Agreement for Purchase and Licensing
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**   as offered by Software- und Organisations-Service GmbH
**   in the respective terms of supply that ship with this file.
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package com.sos.scheduler.engine.kernel.util;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Properties;

import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;

public class ClassResource {
    private final Class<?> clas;
    private final String subPath;

    public ClassResource(Class<?> c, String path) {
        clas = c;
        subPath = path;
    }

    public final InputStream getInputStream() {
        try {
            //clas.getClassLoader().getResourceAsStream(getPath());
            return url().openStream();
        } catch (IOException x) {
            throw new RuntimeException("Java ressource '" + url() + "' is missing", x);
        }
    }

    //    private final String getPath() {
    //        return clas.getPackage().getName().replace(".", "/") + "/" + subPath;
    //    }

    public final URL url() {
        return clas.getResource(subPath);
    }

    public final ImmutableMap<String, String> properties() {
        try {
            Properties properties = new Properties();
            properties.load(getInputStream());
            return Maps.fromProperties(properties);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public final String toString() {
        return "Java resource " + url();
    }

    public static URL resourceUrl(Class<?> c, String subPath) {
        return new ClassResource(c, subPath).url();
    }
}