/*
 * 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
 *
 *      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.springframework.web.servlet.resource;

import org.springframework.core.io.Resource;

A 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 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, Rossen Stoyanchev
See Also:
VersionResourceResolver
Since:
4.1/**
 * A {@code VersionStrategy} that relies on a fixed version applied as a request
 * path prefix, e.g. reduced SHA, version name, release date, etc.
 *
 * <p>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.
Params:
version – the fixed version string to use/**
	 * 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;
	}

}