|
1 | | -package org.apache.flink.connector.redshift.mode.copy;public class RedshiftCopyModeRowConverterImpl { |
| 1 | +/* |
| 2 | + * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | + * or more contributor license agreements. See the NOTICE file |
| 4 | + * distributed with this work for additional information |
| 5 | + * regarding copyright ownership. The ASF licenses this file |
| 6 | + * to you under the Apache License, Version 2.0 (the |
| 7 | + * "License"); you may not use this file except in compliance |
| 8 | + * with the License. You may obtain a copy of the License at |
| 9 | + * |
| 10 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | + * |
| 12 | + * Unless required by applicable law or agreed to in writing, software |
| 13 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | + * See the License for the specific language governing permissions and |
| 16 | + * limitations under the License. |
| 17 | + */ |
| 18 | + |
| 19 | +package org.apache.flink.connector.redshift.mode.copy; |
| 20 | + |
| 21 | +import org.apache.flink.annotation.Internal; |
| 22 | +import org.apache.flink.connector.redshift.converter.AbstractRedshiftRowConverter; |
| 23 | +import org.apache.flink.table.data.RowData; |
| 24 | +import org.apache.flink.table.types.logical.DecimalType; |
| 25 | +import org.apache.flink.table.types.logical.LogicalType; |
| 26 | +import org.apache.flink.table.types.logical.TimestampType; |
| 27 | + |
| 28 | +import java.sql.ResultSet; |
| 29 | +import java.time.LocalDate; |
| 30 | +import java.time.format.DateTimeFormatter; |
| 31 | +import java.util.ArrayList; |
| 32 | + |
| 33 | +/** Converter Implementation for Redshift in COPY Mode. */ |
| 34 | +@Internal |
| 35 | +public class RedshiftCopyModeRowConverterImpl extends AbstractRedshiftRowConverter { |
| 36 | + |
| 37 | + public static final String DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss.SSS"; |
| 38 | + |
| 39 | + private final LogicalType[] fieldTypes; |
| 40 | + |
| 41 | + public RedshiftCopyModeRowConverterImpl(LogicalType[] fieldTypes) { |
| 42 | + this.fieldTypes = fieldTypes; |
| 43 | + } |
| 44 | + |
| 45 | + @Override |
| 46 | + public Object toExternal(RowData rowData) { |
| 47 | + ArrayList<String> csvLine = new ArrayList<>(); |
| 48 | + for (int index = 0; index < rowData.getArity(); index++) { |
| 49 | + LogicalType type = fieldTypes[index]; |
| 50 | + StringBuilder sb = new StringBuilder(); |
| 51 | + switch (type.getTypeRoot()) { |
| 52 | + case BOOLEAN: |
| 53 | + sb.append(rowData.getBoolean(index)); |
| 54 | + break; |
| 55 | + case FLOAT: |
| 56 | + sb.append(rowData.getFloat(index)); |
| 57 | + break; |
| 58 | + case DOUBLE: |
| 59 | + sb.append(rowData.getDouble(index)); |
| 60 | + break; |
| 61 | + case INTERVAL_YEAR_MONTH: |
| 62 | + case INTEGER: |
| 63 | + sb.append(rowData.getInt(index)); |
| 64 | + break; |
| 65 | + case INTERVAL_DAY_TIME: |
| 66 | + case BIGINT: |
| 67 | + sb.append(rowData.getLong(index)); |
| 68 | + break; |
| 69 | + case TINYINT: |
| 70 | + case SMALLINT: |
| 71 | + case CHAR: |
| 72 | + case VARCHAR: |
| 73 | + sb.append(rowData.getString(index).toString()); |
| 74 | + break; |
| 75 | + case BINARY: |
| 76 | + case VARBINARY: |
| 77 | + case DATE: |
| 78 | + sb.append( |
| 79 | + LocalDate.ofEpochDay(rowData.getInt(index)) |
| 80 | + .format(DateTimeFormatter.ISO_DATE)); |
| 81 | + break; |
| 82 | + case TIME_WITHOUT_TIME_ZONE: |
| 83 | + case TIMESTAMP_WITH_TIME_ZONE: |
| 84 | + case TIMESTAMP_WITHOUT_TIME_ZONE: |
| 85 | + final int timestampPrecision = ((TimestampType) type).getPrecision(); |
| 86 | + final DateTimeFormatter dateTimeFormatter = |
| 87 | + DateTimeFormatter.ofPattern(DATE_TIME_FORMAT); |
| 88 | + sb.append( |
| 89 | + rowData.getTimestamp(index, timestampPrecision) |
| 90 | + .toLocalDateTime() |
| 91 | + .format(dateTimeFormatter)); |
| 92 | + break; |
| 93 | + case TIMESTAMP_WITH_LOCAL_TIME_ZONE: |
| 94 | + |
| 95 | + case DECIMAL: |
| 96 | + final int decimalPrecision = ((DecimalType) type).getPrecision(); |
| 97 | + final int decimalScale = ((DecimalType) type).getScale(); |
| 98 | + sb.append(rowData.getDecimal(index, decimalPrecision, decimalScale)); |
| 99 | + break; |
| 100 | + case ARRAY: |
| 101 | + |
| 102 | + case MAP: |
| 103 | + case MULTISET: |
| 104 | + case ROW: |
| 105 | + case RAW: |
| 106 | + default: |
| 107 | + throw new UnsupportedOperationException("Unsupported type:" + type); |
| 108 | + } |
| 109 | + csvLine.add(sb.toString()); |
| 110 | + } |
| 111 | + return csvLine.toArray(new String[0]); |
| 112 | + } |
| 113 | + |
| 114 | + @Override |
| 115 | + public RowData toInternal(ResultSet resultSet) { |
| 116 | + throw new UnsupportedOperationException( |
| 117 | + "COPY Mode is supported only for write to Redshift in batch manner."); |
| 118 | + } |
2 | 119 | } |
0 commit comments