| /* |
| * 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.util; |
| |
| import org.apache.iotdb.db.exception.query.QueryProcessException; |
| import org.apache.iotdb.db.queryengine.plan.expression.leaf.ConstantOperand; |
| import org.apache.iotdb.db.queryengine.transformation.datastructure.tv.ElasticSerializableTVList; |
| import org.apache.iotdb.db.queryengine.transformation.datastructure.util.ValueRecorder; |
| import org.apache.iotdb.db.utils.CommonUtils; |
| |
| import org.apache.tsfile.block.column.Column; |
| import org.apache.tsfile.enums.TSDataType; |
| import org.apache.tsfile.read.common.block.column.BinaryColumn; |
| import org.apache.tsfile.read.common.block.column.BooleanColumn; |
| import org.apache.tsfile.read.common.block.column.DoubleColumn; |
| import org.apache.tsfile.read.common.block.column.FloatColumn; |
| import org.apache.tsfile.read.common.block.column.IntColumn; |
| import org.apache.tsfile.read.common.block.column.LongColumn; |
| import org.apache.tsfile.utils.Binary; |
| import org.apache.tsfile.write.UnSupportedDataTypeException; |
| |
| import java.io.IOException; |
| import java.util.Objects; |
| import java.util.Optional; |
| |
| public class TransformUtils { |
| |
| private TransformUtils() { |
| throw new IllegalStateException("TransformUtils should not be instantiated."); |
| } |
| |
| public static int compare(Binary first, Binary second) { |
| if (Objects.requireNonNull(first) == Objects.requireNonNull(second)) { |
| return 0; |
| } |
| |
| return first.compareTo(second); |
| } |
| |
| public static Column transformConstantOperandToColumn(ConstantOperand constantOperand) { |
| Objects.requireNonNull(constantOperand); |
| |
| try { |
| Object value = |
| CommonUtils.parseValue(constantOperand.getDataType(), constantOperand.getValueString()); |
| if (value == null) { |
| throw new UnsupportedOperationException( |
| "Invalid constant operand: " + constantOperand.getExpressionString()); |
| } |
| |
| switch (constantOperand.getDataType()) { |
| case INT32: |
| return new IntColumn(1, Optional.empty(), new int[] {(int) value}); |
| case INT64: |
| return new LongColumn(1, Optional.empty(), new long[] {(long) value}); |
| case FLOAT: |
| return new FloatColumn(1, Optional.empty(), new float[] {(float) value}); |
| case DOUBLE: |
| return new DoubleColumn(1, Optional.empty(), new double[] {(double) value}); |
| case TEXT: |
| return new BinaryColumn(1, Optional.empty(), new Binary[] {(Binary) value}); |
| case BOOLEAN: |
| return new BooleanColumn(1, Optional.empty(), new boolean[] {(boolean) value}); |
| default: |
| throw new UnSupportedDataTypeException( |
| "Unsupported type: " + constantOperand.getDataType()); |
| } |
| } catch (QueryProcessException e) { |
| throw new UnsupportedOperationException(e); |
| } |
| } |
| |
| public static boolean splitWindowForStateWindow( |
| TSDataType dataType, |
| ValueRecorder valueRecorder, |
| double delta, |
| ElasticSerializableTVList tvList) |
| throws IOException { |
| boolean res; |
| switch (dataType) { |
| case INT32: |
| if (!valueRecorder.hasRecorded()) { |
| valueRecorder.recordInt(tvList.getInt(tvList.size() - 2)); |
| valueRecorder.setRecorded(true); |
| } |
| res = Math.abs(tvList.getInt(tvList.size() - 1) - valueRecorder.getInt()) > delta; |
| if (res) { |
| valueRecorder.recordInt(tvList.getInt(tvList.size() - 1)); |
| } |
| break; |
| case INT64: |
| if (!valueRecorder.hasRecorded()) { |
| valueRecorder.recordLong(tvList.getLong(tvList.size() - 2)); |
| valueRecorder.setRecorded(true); |
| } |
| res = Math.abs(tvList.getLong(tvList.size() - 1) - valueRecorder.getLong()) > delta; |
| if (res) { |
| valueRecorder.recordLong(tvList.getLong(tvList.size() - 1)); |
| } |
| break; |
| case FLOAT: |
| if (!valueRecorder.hasRecorded()) { |
| valueRecorder.recordFloat(tvList.getFloat(tvList.size() - 2)); |
| valueRecorder.setRecorded(true); |
| } |
| res = Math.abs(tvList.getFloat(tvList.size() - 1) - valueRecorder.getFloat()) > delta; |
| if (res) { |
| valueRecorder.recordFloat(tvList.getFloat(tvList.size() - 1)); |
| } |
| break; |
| case DOUBLE: |
| if (!valueRecorder.hasRecorded()) { |
| valueRecorder.recordDouble(tvList.getDouble(tvList.size() - 2)); |
| valueRecorder.setRecorded(true); |
| } |
| res = Math.abs(tvList.getDouble(tvList.size() - 1) - valueRecorder.getDouble()) > delta; |
| if (res) { |
| valueRecorder.recordDouble(tvList.getDouble(tvList.size() - 1)); |
| } |
| break; |
| case BOOLEAN: |
| if (!valueRecorder.hasRecorded()) { |
| valueRecorder.recordBoolean(tvList.getBoolean(tvList.size() - 2)); |
| valueRecorder.setRecorded(true); |
| } |
| res = tvList.getBoolean(tvList.size() - 1) != valueRecorder.getBoolean(); |
| if (res) { |
| valueRecorder.recordBoolean(tvList.getBoolean(tvList.size() - 1)); |
| } |
| break; |
| case TEXT: |
| if (!valueRecorder.hasRecorded()) { |
| valueRecorder.recordString(tvList.getString(tvList.size() - 2)); |
| valueRecorder.setRecorded(true); |
| } |
| res = !tvList.getString(tvList.size() - 1).equals(valueRecorder.getString()); |
| if (res) { |
| valueRecorder.recordString(tvList.getString(tvList.size() - 1)); |
| } |
| break; |
| default: |
| throw new UnsupportedOperationException( |
| "The data type of the state window strategy is not valid."); |
| } |
| return res; |
| } |
| } |