org.codehaus.httpcache4j.cache.Key Maven / Gradle / Ivy
/*
* Copyright (c) 2009. The Codehaus. 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.
*/
package org.codehaus.httpcache4j.cache;
import org.apache.commons.lang.Validate;
import org.codehaus.httpcache4j.HTTPRequest;
import org.codehaus.httpcache4j.HTTPResponse;
import org.codehaus.httpcache4j.Headers;
import static org.codehaus.httpcache4j.HeaderConstants.VARY;
import java.net.URI;
import java.io.Serializable;
import java.util.Map;
import java.util.HashMap;
/**
* @author Erlend Hamnaberg
* @version $Revision: #5 $ $Date: 2008/09/15 $
*/
public class Key implements Serializable {
private static final long serialVersionUID = 5827064595759738979L;
private URI uri;
private Vary vary;
public static Key create(URI uri, Vary vary) {
Validate.notNull(uri, "URI may not be null");
Validate.notNull(vary, "vary may not be null");
return new Key(uri, vary);
}
public static Key create(HTTPRequest request, HTTPResponse response) {
URI uri = request.getRequestURI();
return new Key(uri, determineVariation(request.getAllHeaders(), response.getHeaders()));
}
private static Vary determineVariation(Headers responseHeaders, Headers requestHeaders) {
String varyHeader = responseHeaders.getFirstHeaderValue(VARY);
Map resolvedVaryHeaders = new HashMap();
if (varyHeader != null) {
String[] varies = varyHeader.split(",");
for (String vary : varies) {
String value = requestHeaders.getFirstHeaderValue(vary);
resolvedVaryHeaders.put(vary, value == null ? null : value);
}
}
return new Vary(resolvedVaryHeaders);
}
Key(URI uri, Vary vary) {
Validate.notNull(uri, "URI may not be null");
Validate.notNull(vary, "Vary may not be null");
this.uri = uri;
this.vary = vary;
}
public URI getURI() {
return uri;
}
public Vary getVary() {
return vary;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("URI: ").append(uri).append("\n");
sb.append("VARY: ").append(vary).append("\n");
return sb.toString();
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Key key = (Key) o;
if (uri != null ? !uri.equals(key.uri) : key.uri != null) {
return false;
}
if (vary != null ? !vary.equals(key.vary) : key.vary != null) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = uri != null ? uri.hashCode() : 0;
result = 31 * result + (vary != null ? vary.hashCode() : 0);
return result;
}
}
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