de.rnd7.urlcache.URLCacheKey.java Source code

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Here is the source code for de.rnd7.urlcache.URLCacheKey.java

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/**
 * Copyright 2016 Philipp Arndt
 *
 * 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 de.rnd7.urlcache;

import java.net.URL;

import org.apache.commons.codec.digest.DigestUtils;

public class URLCacheKey {
    private final URL url;
    private final String key;

    public URLCacheKey(final URL url, final String key) {
        this.url = url;
        this.key = key;
    }

    public URL getUrl() {
        return this.url;
    }

    public String getKey() {
        return this.key;
    }

    public static URLCacheKey of(final URL url) {
        final String key = DigestUtils.sha1Hex(url.toExternalForm());
        return new URLCacheKey(url, key);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = (prime * result) + ((this.key == null) ? 0 : this.key.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (this.getClass() != obj.getClass()) {
            return false;
        }
        final URLCacheKey other = (URLCacheKey) obj;
        if (this.key == null) {
            if (other.key != null) {
                return false;
            }
        } else if (!this.key.equals(other.key)) {
            return false;
        }
        return true;
    }

}