org.springframework.web.servlet.resource.FixedVersionStrategy Maven / Gradle / Ivy
/*
* Copyright 2002-2018 the original author or authors.
*
* 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
*
* https://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.springframework.web.servlet.resource;
import org.springframework.core.io.Resource;
/**
* A {@code VersionStrategy} that relies on a fixed version applied as a request
* path prefix, e.g. reduced SHA, version name, release date, etc.
*
* This is useful for example when {@link ContentVersionStrategy} cannot be
* used such as when using JavaScript module loaders which are in charge of
* loading the JavaScript resources and need to know their relative paths.
*
* @author Brian Clozel
* @author Rossen Stoyanchev
* @since 4.1
* @see VersionResourceResolver
*/
public class FixedVersionStrategy extends AbstractVersionStrategy {
private final String version;
/**
* Create a new FixedVersionStrategy with the given version string.
* @param version the fixed version string to use
*/
public FixedVersionStrategy(String version) {
super(new PrefixVersionPathStrategy(version));
this.version = version;
}
@Override
public String getResourceVersion(Resource resource) {
return this.version;
}
}