org.apache.hadoop.hbase.io.hfile.BlockCachesIterator Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hbase-server Show documentation
Show all versions of hbase-server Show documentation
Server functionality for HBase
/**
* Copyright The Apache Software Foundation
*
* 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.hadoop.hbase.io.hfile;
import java.util.Iterator;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Iterator over an array of BlockCache CachedBlocks.
*/
@InterfaceAudience.Private
class BlockCachesIterator implements Iterator {
int index = 0;
final BlockCache [] bcs;
Iterator current;
BlockCachesIterator(final BlockCache [] blockCaches) {
this.bcs = blockCaches;
this.current = this.bcs[this.index].iterator();
}
@Override
public boolean hasNext() {
if (current.hasNext()) return true;
this.index++;
if (this.index >= this.bcs.length) return false;
this.current = this.bcs[this.index].iterator();
return hasNext();
}
@Override
public CachedBlock next() {
return this.current.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}