| /* |
| * 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.accumulo.tserver; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.accumulo.core.data.ByteSequence; |
| import org.apache.accumulo.core.data.Key; |
| import org.apache.accumulo.core.data.Range; |
| import org.apache.accumulo.core.data.Value; |
| import org.apache.accumulo.core.iterators.IteratorEnvironment; |
| import org.apache.accumulo.core.iterators.SortedKeyValueIterator; |
| import org.apache.accumulo.core.iterators.WrappingIterator; |
| import org.apache.accumulo.core.iteratorsImpl.system.InterruptibleIterator; |
| |
| class MemKeyConversionIterator extends WrappingIterator implements InterruptibleIterator { |
| private MemKey currKey = null; |
| private Value currVal = null; |
| |
| public MemKeyConversionIterator(SortedKeyValueIterator<Key,Value> source) { |
| super(); |
| setSource(source); |
| } |
| |
| @Override |
| public SortedKeyValueIterator<Key,Value> deepCopy(IteratorEnvironment env) { |
| return new MemKeyConversionIterator(getSource().deepCopy(env)); |
| } |
| |
| @Override |
| public Key getTopKey() { |
| return currKey; |
| } |
| |
| @Override |
| public Value getTopValue() { |
| return currVal; |
| } |
| |
| private void getTopKeyVal() { |
| Key k = super.getTopKey(); |
| Value v = super.getTopValue(); |
| if (k instanceof MemKey || k == null) { |
| currKey = (MemKey) k; |
| currVal = v; |
| return; |
| } |
| |
| MemValue mv = MemValue.decode(v); |
| currVal = mv.value; |
| currKey = new MemKey(k, mv.kvCount); |
| } |
| |
| @Override |
| public void next() throws IOException { |
| super.next(); |
| if (hasTop()) |
| getTopKeyVal(); |
| } |
| |
| @Override |
| public void seek(Range range, Collection<ByteSequence> columnFamilies, boolean inclusive) |
| throws IOException { |
| super.seek(range, columnFamilies, inclusive); |
| |
| if (hasTop()) |
| getTopKeyVal(); |
| |
| Key k = range.getStartKey(); |
| if (k instanceof MemKey && hasTop()) { |
| while (hasTop() && currKey.compareTo(k) < 0) |
| next(); |
| } |
| } |
| |
| @Override |
| public void setInterruptFlag(AtomicBoolean flag) { |
| ((InterruptibleIterator) getSource()).setInterruptFlag(flag); |
| } |
| |
| } |