com.outbrain.pajamasproxy.memcached.adapter.LocalCacheElement.java Source code

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Here is the source code for com.outbrain.pajamasproxy.memcached.adapter.LocalCacheElement.java

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/**
 *  Copyright 2008 ThimbleWare Inc.
 *
 *  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 com.outbrain.pajamasproxy.memcached.adapter;

import io.netty.buffer.ByteBuf;

/**
 * Represents information about a cache entry.
 */
public final class LocalCacheElement implements CacheElement {
    private int expire;
    private int flags;
    private ByteBuf data;
    private Key key;
    private long casUnique = 0L;

    public LocalCacheElement(final Key key) {
        this.key = key;
    }

    public LocalCacheElement(final Key key, final int flags, final int expire, final long casUnique) {
        this.key = key;
        this.flags = flags;
        this.expire = expire;
        this.casUnique = casUnique;
    }

    public static LocalCacheElement key(final Key key) {
        return new LocalCacheElement(key);
    }

    @Override
    public int size() {
        return getData().capacity();
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        final LocalCacheElement that = (LocalCacheElement) o;

        if (casUnique != that.casUnique) {
            return false;
        }
        if (expire != that.expire) {
            return false;
        }
        if (flags != that.flags) {
            return false;
        }
        if (!data.equals(that.data)) {
            return false;
        }

        return key.equals(that.key);
    }

    @Override
    public int hashCode() {
        int result = expire;
        result = 31 * result + flags;
        result = 31 * result + (data != null ? data.hashCode() : 0);
        result = 31 * result + key.hashCode();
        result = 31 * result + (int) (casUnique ^ (casUnique >>> 32));
        return result;
    }

    @Override
    public int getExpire() {
        return expire;
    }

    @Override
    public int getFlags() {
        return flags;
    }

    @Override
    public ByteBuf getData() {
        data.readerIndex(0);
        return data;
    }

    @Override
    public void setData(final ByteBuf data) {
        data.readerIndex(0);
        this.data = data;
    }

    @Override
    public Key getKey() {
        return key;
    }

    @Override
    public long getCasUnique() {
        return casUnique;
    }

    @Override
    public void setCasUnique(final long casUnique) {
        this.casUnique = casUnique;
    }

}