/*
* Copyright (c) 2005-2011 Grameen Foundation USA
* All rights reserved.
*
* 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.
*
* See also http://www.apache.org/licenses/LICENSE-2.0.html for an
* explanation of the license and how it is applied.
*/
package org.mifos.db.upgrade;
import liquibase.resource.ResourceAccessor;
import org.springframework.context.ResourceLoaderAware;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Enumeration;
import java.util.Vector;
public class ResourceOpener implements ResourceAccessor, ResourceLoaderAware {
private String changeLog;
private ResourceLoader resourceLoader;
public ResourceOpener(String changeLog) {
this.changeLog = changeLog;
}
@Override
public InputStream getResourceAsStream(String file) throws IOException {
try {
Resource resource = getResource(file);
return resource.getInputStream();
} catch (FileNotFoundException ex) {
return null;
}
}
@Override
public Enumeration<URL> getResources(String packageName) throws IOException {
Vector<URL> tmp = new Vector<URL>();
tmp.add(getResource(packageName).getURL());
return tmp.elements();
}
public Resource getResource(String file) {
return resourceLoader.getResource(adjustClasspath(file));
}
private String adjustClasspath(String file) {
return isClasspathPrefixPresent(changeLog) && !isClasspathPrefixPresent(file)
? ResourceLoader.CLASSPATH_URL_PREFIX + file
: file;
}
public boolean isClasspathPrefixPresent(String file) {
return file.startsWith(ResourceLoader.CLASSPATH_URL_PREFIX);
}
@Override
public ClassLoader toClassLoader() {
return resourceLoader.getClassLoader();
}
@Override
public void setResourceLoader(ResourceLoader resourceLoader) {
this.resourceLoader = resourceLoader;
}
public String getChangeLog() {
return changeLog;
}
}