| /* |
| * 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.iotdb.db.queryengine.transformation.dag.input; |
| |
| import org.apache.iotdb.db.queryengine.execution.operator.Operator; |
| import org.apache.iotdb.db.queryengine.transformation.api.YieldableState; |
| |
| import org.apache.tsfile.enums.TSDataType; |
| import org.apache.tsfile.read.common.block.TsBlock; |
| import org.apache.tsfile.read.common.block.TsBlock.TsBlockRowIterator; |
| |
| import java.util.List; |
| |
| public class TsBlockInputDataSet implements IUDFInputDataSet { |
| |
| private final Operator operator; |
| private final List<TSDataType> dataTypes; |
| |
| private TsBlockRowIterator tsBlockRowIterator; |
| |
| public TsBlockInputDataSet(Operator operator, List<TSDataType> dataTypes) { |
| this.operator = operator; |
| this.dataTypes = dataTypes; |
| } |
| |
| @Override |
| public List<TSDataType> getDataTypes() { |
| return dataTypes; |
| } |
| |
| @Override |
| public boolean hasNextRowInObjects() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public YieldableState canYieldNextRowInObjects() throws Exception { |
| if (tsBlockRowIterator == null) { |
| if (operator.isBlocked() != Operator.NOT_BLOCKED) { |
| return YieldableState.NOT_YIELDABLE_WAITING_FOR_DATA; |
| } |
| if (!operator.hasNextWithTimer()) { |
| return YieldableState.NOT_YIELDABLE_NO_MORE_DATA; |
| } |
| final TsBlock tsBlock = operator.nextWithTimer(); |
| if (tsBlock == null) { |
| return YieldableState.NOT_YIELDABLE_WAITING_FOR_DATA; |
| } |
| tsBlockRowIterator = tsBlock.getTsBlockRowIterator(); |
| } |
| |
| if (tsBlockRowIterator.hasNext()) { |
| return YieldableState.YIELDABLE; |
| } else { |
| tsBlockRowIterator = null; |
| if (operator.isBlocked() != Operator.NOT_BLOCKED) { |
| return YieldableState.NOT_YIELDABLE_WAITING_FOR_DATA; |
| } |
| return operator.hasNextWithTimer() |
| ? YieldableState.NOT_YIELDABLE_WAITING_FOR_DATA |
| : YieldableState.NOT_YIELDABLE_NO_MORE_DATA; |
| } |
| } |
| |
| @Override |
| public Object[] nextRowInObjects() { |
| return tsBlockRowIterator.next(); |
| } |
| } |