| /* |
| * 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.flink.table.runtime.join.batch.hashtable; |
| |
| import org.apache.flink.runtime.io.disk.ChannelReaderInputViewIterator; |
| import org.apache.flink.table.dataformat.BaseRow; |
| import org.apache.flink.table.dataformat.BinaryRow; |
| |
| import java.io.IOException; |
| |
| /** |
| * Probe iterator from probe or spilled partition. |
| */ |
| public final class ProbeIterator { |
| |
| private ChannelReaderInputViewIterator<BinaryRow> source; |
| |
| private BaseRow instance; |
| private BinaryRow reuse; |
| |
| public ProbeIterator(BinaryRow instance) { |
| this.instance = instance; |
| } |
| |
| public void set(ChannelReaderInputViewIterator<BinaryRow> source) { |
| this.source = source; |
| } |
| |
| public void setReuse(BinaryRow reuse) { |
| this.reuse = reuse; |
| } |
| |
| public BinaryRow next() throws IOException { |
| BinaryRow retVal = this.source.next(reuse); |
| if (retVal != null) { |
| this.instance = retVal; |
| return retVal; |
| } else { |
| return null; |
| } |
| } |
| |
| public BaseRow current() { |
| return this.instance; |
| } |
| |
| public void setInstance(BaseRow instance) { |
| this.instance = instance; |
| } |
| |
| public boolean hasSource() { |
| return source != null; |
| } |
| } |