| /* |
| * 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.query.udf.example; |
| |
| import org.apache.iotdb.udf.api.UDTF; |
| import org.apache.iotdb.udf.api.customizer.config.UDTFConfigurations; |
| import org.apache.iotdb.udf.api.customizer.parameter.UDFParameterValidator; |
| import org.apache.iotdb.udf.api.customizer.parameter.UDFParameters; |
| import org.apache.iotdb.udf.api.customizer.strategy.MappableRowByRowAccessStrategy; |
| import org.apache.iotdb.udf.api.type.Type; |
| |
| import org.apache.tsfile.block.column.Column; |
| import org.apache.tsfile.block.column.ColumnBuilder; |
| |
| public class TwoSumBlock implements UDTF { |
| private Type type; |
| |
| @Override |
| public void validate(UDFParameterValidator validator) throws Exception { |
| validator |
| .validateInputSeriesNumber(2) |
| .validateInputSeriesDataType(0, Type.INT32, Type.INT64, Type.FLOAT, Type.DOUBLE) |
| .validateInputSeriesDataType(1, Type.INT32, Type.INT64, Type.FLOAT, Type.DOUBLE); |
| } |
| |
| @Override |
| public void beforeStart(UDFParameters parameters, UDTFConfigurations configurations) { |
| type = parameters.getDataType(0); |
| configurations.setAccessStrategy(new MappableRowByRowAccessStrategy()).setOutputDataType(type); |
| } |
| |
| @Override |
| public void transform(Column[] columns, ColumnBuilder builder) throws Exception { |
| switch (type) { |
| case INT32: |
| transformInt(columns, builder); |
| return; |
| case INT64: |
| transformLong(columns, builder); |
| return; |
| case FLOAT: |
| transformFloat(columns, builder); |
| return; |
| case DOUBLE: |
| transformDouble(columns, builder); |
| return; |
| default: |
| throw new Exception(); |
| } |
| } |
| |
| public void transformInt(Column[] columns, ColumnBuilder builder) throws Exception { |
| int[] inputs1 = columns[0].getInts(); |
| int[] inputs2 = columns[1].getInts(); |
| |
| int count = columns[0].getPositionCount(); |
| for (int i = 0; i < count; i++) { |
| builder.writeInt(inputs1[i] + inputs2[i]); |
| } |
| } |
| |
| public void transformLong(Column[] columns, ColumnBuilder builder) throws Exception { |
| long[] inputs1 = columns[0].getLongs(); |
| long[] inputs2 = columns[1].getLongs(); |
| |
| int count = columns[0].getPositionCount(); |
| for (int i = 0; i < count; i++) { |
| builder.writeLong(inputs1[i] + inputs2[i]); |
| } |
| } |
| |
| public void transformFloat(Column[] columns, ColumnBuilder builder) throws Exception { |
| float[] inputs1 = columns[0].getFloats(); |
| float[] inputs2 = columns[1].getFloats(); |
| |
| int count = columns[0].getPositionCount(); |
| for (int i = 0; i < count; i++) { |
| builder.writeFloat(inputs1[i] + inputs2[i]); |
| } |
| } |
| |
| public void transformDouble(Column[] columns, ColumnBuilder builder) throws Exception { |
| double[] inputs1 = columns[0].getDoubles(); |
| double[] inputs2 = columns[1].getDoubles(); |
| |
| int count = columns[0].getPositionCount(); |
| for (int i = 0; i < count; i++) { |
| builder.writeDouble(inputs1[i] + inputs2[i]); |
| } |
| } |
| } |