/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.ignite.internal.pagemem.wal.record.delta;
import org.apache.ignite.IgniteCheckedException;
import org.apache.ignite.internal.pagemem.PageMemory;
import org.apache.ignite.internal.processors.cache.database.tree.io.BPlusIO;
import org.apache.ignite.internal.processors.cache.database.tree.io.PageIO;
import org.apache.ignite.internal.util.typedef.internal.S;
/**
* Remove.
*/
public class RemoveRecord extends PageDeltaRecord {
/** */
private int idx;
/** */
private int cnt;
/**
* @param cacheId Cache ID.
* @param pageId Page ID.
* @param idx Index.
* @param cnt Count.
*/
public RemoveRecord(int cacheId, long pageId, int idx, int cnt) {
super(cacheId, pageId);
this.idx = idx;
this.cnt = cnt;
}
/** {@inheritDoc} */
@Override public void applyDelta(PageMemory pageMem, long pageAddr) throws IgniteCheckedException {
BPlusIO<?> io = PageIO.getBPlusIO(pageAddr);
if (io.getCount(pageAddr) != cnt)
throw new DeltaApplicationException("Count is wrong [expCnt=" + cnt + ", actual=" + io.getCount(pageAddr) + ']');
io.remove(pageAddr, idx, cnt);
}
/** {@inheritDoc} */
@Override public RecordType type() {
return RecordType.BTREE_PAGE_REMOVE;
}
/**
* @return Index.
*/
public int index() {
return idx;
}
/**
* @return Count.
*/
public int count() {
return cnt;
}
/** {@inheritDoc} */
@Override public String toString() {
return S.toString(RemoveRecord.class, this, super.toString());
}
}