org.apache.commons.configuration2.io.AbsoluteNameLocationStrategy Maven / Gradle / Ivy
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Tools to assist in the reading of configuration/preferences files in
various formats
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.commons.configuration2.io;
import java.io.File;
import java.net.URL;
import org.apache.commons.lang3.StringUtils;
/**
*
* A specialized implementation of {@code FileLocationStrategy} which checks
* whether the provided file name is already an absolute file name.
*
*
* This strategy ignores the URL and the base path stored in the passed in
* {@link FileLocator}. It is only triggered by absolute names in the locator's
* {@code fileName} component.
*
*
* @version $Id: AbsoluteNameLocationStrategy.java 1842194 2018-09-27 22:24:23Z ggregory $
* @since 2.0
*/
public class AbsoluteNameLocationStrategy implements FileLocationStrategy
{
/**
* {@inheritDoc} This implementation constructs a {@code File} object from
* the locator's file name (if defined). If this results in an absolute file
* name pointing to an existing file, the corresponding URL is returned.
*/
@Override
public URL locate(final FileSystem fileSystem, final FileLocator locator)
{
if (StringUtils.isNotEmpty(locator.getFileName()))
{
final File file = new File(locator.getFileName());
if (file.isAbsolute() && file.exists())
{
return FileLocatorUtils.convertFileToURL(file);
}
}
return null;
}
}