| /* |
| * 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.transformer.unary.scalar; |
| |
| import org.apache.iotdb.db.exception.query.QueryProcessException; |
| import org.apache.iotdb.db.queryengine.plan.expression.multi.builtin.helper.CastFunctionHelper; |
| import org.apache.iotdb.db.queryengine.transformation.api.LayerPointReader; |
| import org.apache.iotdb.db.queryengine.transformation.dag.transformer.unary.UnaryTransformer; |
| import org.apache.iotdb.tsfile.common.conf.TSFileConfig; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.utils.Binary; |
| import org.apache.iotdb.tsfile.utils.BytesUtils; |
| |
| import java.io.IOException; |
| |
| public class CastFunctionTransformer extends UnaryTransformer { |
| private final TSDataType targetDataType; |
| |
| public CastFunctionTransformer(LayerPointReader layerPointReader, TSDataType targetDataType) { |
| super(layerPointReader); |
| this.targetDataType = targetDataType; |
| } |
| |
| @Override |
| public TSDataType getDataType() { |
| return targetDataType; |
| } |
| |
| @Override |
| protected void transformAndCache() throws QueryProcessException, IOException { |
| switch (layerPointReaderDataType) { |
| case INT32: |
| cast(layerPointReader.currentInt()); |
| return; |
| case INT64: |
| cast(layerPointReader.currentLong()); |
| return; |
| case FLOAT: |
| cast(layerPointReader.currentFloat()); |
| return; |
| case DOUBLE: |
| cast(layerPointReader.currentDouble()); |
| return; |
| case BOOLEAN: |
| cast(layerPointReader.currentBoolean()); |
| return; |
| case TEXT: |
| cast(layerPointReader.currentBinary()); |
| return; |
| default: |
| throw new UnsupportedOperationException( |
| String.format("Unsupported source dataType: %s", layerPointReaderDataType)); |
| } |
| } |
| |
| private void cast(int value) { |
| switch (targetDataType) { |
| case INT32: |
| cachedInt = value; |
| return; |
| case INT64: |
| cachedLong = value; |
| return; |
| case FLOAT: |
| cachedFloat = value; |
| return; |
| case DOUBLE: |
| cachedDouble = value; |
| return; |
| case BOOLEAN: |
| cachedBoolean = (value != 0); |
| return; |
| case TEXT: |
| cachedBinary = BytesUtils.valueOf(String.valueOf(value)); |
| return; |
| default: |
| throw new UnsupportedOperationException( |
| String.format("Unsupported target dataType: %s", layerPointReaderDataType)); |
| } |
| } |
| |
| private void cast(long value) { |
| switch (targetDataType) { |
| case INT32: |
| cachedInt = CastFunctionHelper.castLongToInt(value); |
| return; |
| case INT64: |
| cachedLong = value; |
| return; |
| case FLOAT: |
| cachedFloat = value; |
| return; |
| case DOUBLE: |
| cachedDouble = value; |
| return; |
| case BOOLEAN: |
| cachedBoolean = (value != 0L); |
| return; |
| case TEXT: |
| cachedBinary = BytesUtils.valueOf(String.valueOf(value)); |
| return; |
| default: |
| throw new UnsupportedOperationException( |
| String.format("Unsupported target dataType: %s", layerPointReaderDataType)); |
| } |
| } |
| |
| private void cast(float value) { |
| switch (targetDataType) { |
| case INT32: |
| cachedInt = CastFunctionHelper.castFloatToInt(value); |
| return; |
| case INT64: |
| cachedLong = CastFunctionHelper.castFloatToLong(value); |
| return; |
| case FLOAT: |
| cachedFloat = value; |
| return; |
| case DOUBLE: |
| cachedDouble = value; |
| return; |
| case BOOLEAN: |
| cachedBoolean = (value != 0f); |
| return; |
| case TEXT: |
| cachedBinary = BytesUtils.valueOf(String.valueOf(value)); |
| return; |
| default: |
| throw new UnsupportedOperationException( |
| String.format("Unsupported target dataType: %s", layerPointReaderDataType)); |
| } |
| } |
| |
| private void cast(double value) { |
| switch (targetDataType) { |
| case INT32: |
| cachedInt = CastFunctionHelper.castDoubleToInt(value); |
| return; |
| case INT64: |
| cachedLong = CastFunctionHelper.castDoubleToLong(value); |
| return; |
| case FLOAT: |
| cachedFloat = CastFunctionHelper.castDoubleToFloat(value); |
| return; |
| case DOUBLE: |
| cachedDouble = value; |
| return; |
| case BOOLEAN: |
| cachedBoolean = (value != 0.0); |
| return; |
| case TEXT: |
| cachedBinary = BytesUtils.valueOf(String.valueOf(value)); |
| return; |
| default: |
| throw new UnsupportedOperationException( |
| String.format("Unsupported target dataType: %s", layerPointReaderDataType)); |
| } |
| } |
| |
| private void cast(boolean value) { |
| switch (targetDataType) { |
| case INT32: |
| cachedInt = value ? 1 : 0; |
| return; |
| case INT64: |
| cachedLong = value ? 1L : 0; |
| return; |
| case FLOAT: |
| cachedFloat = value ? 1.0f : 0; |
| return; |
| case DOUBLE: |
| cachedDouble = value ? 1.0 : 0; |
| return; |
| case BOOLEAN: |
| cachedBoolean = value; |
| return; |
| case TEXT: |
| cachedBinary = BytesUtils.valueOf(String.valueOf(value)); |
| return; |
| default: |
| throw new UnsupportedOperationException( |
| String.format("Unsupported target dataType: %s", layerPointReaderDataType)); |
| } |
| } |
| |
| private void cast(Binary value) { |
| String stringValue = value.getStringValue(TSFileConfig.STRING_CHARSET); |
| // could throw exception when parsing string value |
| switch (targetDataType) { |
| case INT32: |
| cachedInt = Integer.parseInt(stringValue); |
| return; |
| case INT64: |
| cachedLong = Long.parseLong(stringValue); |
| return; |
| case FLOAT: |
| cachedFloat = CastFunctionHelper.castTextToFloat(stringValue); |
| return; |
| case DOUBLE: |
| cachedDouble = CastFunctionHelper.castTextToDouble(stringValue); |
| return; |
| case BOOLEAN: |
| cachedBoolean = CastFunctionHelper.castTextToBoolean(stringValue); |
| return; |
| case TEXT: |
| cachedBinary = BytesUtils.valueOf(String.valueOf(value)); |
| return; |
| default: |
| throw new UnsupportedOperationException( |
| String.format("Unsupported target dataType: %s", layerPointReaderDataType)); |
| } |
| } |
| } |