com.clican.pluto.common.resource.AutoDecisionResource.java Source code

Introduction

Here is the source code for com.clican.pluto.common.resource.AutoDecisionResource.java

Source

/**
 * The Clican-Pluto software suit is Copyright 2009, Clican Company and individual contributors, and is licensed under the GNU LGPL.
 *
 * @author wei.zhang
 *
 */
package com.clican.pluto.common.resource;

import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class AutoDecisionResource implements Resource {

    private final static Log log = LogFactory.getLog(AutoDecisionResource.class);

    private Resource resource;

    public AutoDecisionResource(String resource) {
        if (StringUtils.isEmpty(resource)) {
            new IllegalArgumentException("resource cannot be null");
        }
        if (log.isInfoEnabled()) {
            log.info("load resource [" + resource + "]");
        }
        if (resource.startsWith(ClassPathResource.CLASS_PATH_RESOURCE_PREFIX)) {
            if (log.isInfoEnabled()) {
                log.info("load resource [" + resource + "] from class path");
            }
            this.resource = new ClassPathResource(resource);
        } else if (resource.startsWith(FilePathResource.FILE_PATH_RESOURCE_PREFIX)) {
            if (log.isInfoEnabled()) {
                log.info("load resource [" + resource + "] from file path");
            }
            this.resource = new FilePathResource(resource);
        } else {
            try {
                this.resource = new ClassPathResource(resource);
            } catch (Exception e) {
                log.debug("This is not a class path resource, try to find it in file path resource");
                this.resource = new FilePathResource(resource);
            }
        }
        if (this.resource == null) {
            throw new IllegalArgumentException("resource cannot be found");
        }
    }

    public InputStream getInputStream() throws FileNotFoundException {
        return resource.getInputStream();
    }

    public OutputStream getOutputStream() throws FileNotFoundException {
        return resource.getOutputStream();
    }

}

// $Id$