net.spy.memcached.collection.SMGetTrimKey Maven / Gradle / Ivy

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/*
 * arcus-java-client : Arcus Java client
 * Copyright 2010-2014 NAVER Corp.
 *
 * 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 net.spy.memcached.collection;

import net.spy.memcached.util.BTreeUtil;

public class SMGetTrimKey implements Comparable {
	private String key;
	private long bkey;
	private byte[] bytebkey;

	public SMGetTrimKey(String key, Object bkey) {
		this.key = key;
		if (bkey instanceof byte[]) {
			this.bytebkey = new ByteArrayBKey((byte[])bkey).getBytes();
			this.bkey = -1;
		} else {
			this.bkey = (Long)bkey;
			this.bytebkey = null;
		}
		
	}
	
	@Override
	public String toString() {
		return "SMGetElement {KEY:" + key + ", BKEY:"
				+ ((bytebkey == null) ? bkey : BTreeUtil.toHex(bytebkey)) + "}";
	}

	@Override
	public int compareTo(SMGetTrimKey param) {
		assert param != null;
		
		int comp;
		/* compare bkey */
		if (bytebkey == null)
			comp = new Long(bkey).compareTo(param.getBkey());
		else
			comp = BTreeUtil.compareByteArraysInLexOrder(bytebkey, param.getByteBkey());
		
		/* if bkey is equal, then compare key */
		if (comp == 0)
			comp = key.compareTo(param.getKey());
		
		return comp;
	}

	public String getKey() {
		return key;
	}
	
	public void setKey(String key) {
		this.key = key;
	}
	
	public long getBkey() {
		if (bkey == -1) {
			throw new IllegalStateException("This element has byte[] bkey. " + toString());
		}
		return bkey;
	}
	
	public byte[] getByteBkey() {
		if (bytebkey == null) {
			throw new IllegalStateException(
					"This element has java.lang.Long type bkey. " + toString());
		}
		return bytebkey;
	}
	
	public Object getBkeyByObject() {
		if (bytebkey != null) {
			return bytebkey;
		} else {
			return bkey;
		}
	}
	
	public void setBkey(long bkey) {
		this.bkey = bkey;
	}

	public boolean hasByteArrayBkey() {
		return bytebkey != null;
	}
}