| /* |
| * 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.tsfile.read.common.block.column; |
| |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| public class Int64ArrayColumnEncoder implements ColumnEncoder { |
| |
| @Override |
| public TimeColumn readTimeColumn(ByteBuffer input, int positionCount) { |
| |
| // Serialized data layout: |
| // +---------------+-----------------+-------------+ |
| // | may have null | null indicators | values | |
| // +---------------+-----------------+-------------+ |
| // | byte | list[byte] | list[int64] | |
| // +---------------+-----------------+-------------+ |
| |
| boolean[] nullIndicators = ColumnEncoder.deserializeNullIndicators(input, positionCount); |
| long[] values = new long[positionCount]; |
| if (nullIndicators == null) { |
| for (int i = 0; i < positionCount; i++) { |
| values[i] = input.getLong(); |
| } |
| return new TimeColumn(0, positionCount, values); |
| } else { |
| throw new IllegalArgumentException("TimeColumn should not contain null values."); |
| } |
| } |
| |
| @Override |
| public Column readColumn(ByteBuffer input, TSDataType dataType, int positionCount) { |
| |
| // Serialized data layout: |
| // +---------------+-----------------+-------------+ |
| // | may have null | null indicators | values | |
| // +---------------+-----------------+-------------+ |
| // | byte | list[byte] | list[int64] | |
| // +---------------+-----------------+-------------+ |
| |
| boolean[] nullIndicators = ColumnEncoder.deserializeNullIndicators(input, positionCount); |
| |
| if (TSDataType.INT64.equals(dataType)) { |
| long[] values = new long[positionCount]; |
| if (nullIndicators == null) { |
| for (int i = 0; i < positionCount; i++) { |
| values[i] = input.getLong(); |
| } |
| } else { |
| for (int i = 0; i < positionCount; i++) { |
| if (!nullIndicators[i]) { |
| values[i] = input.getLong(); |
| } |
| } |
| } |
| return new LongColumn(0, positionCount, nullIndicators, values); |
| } else if (TSDataType.DOUBLE.equals(dataType)) { |
| double[] values = new double[positionCount]; |
| if (nullIndicators == null) { |
| for (int i = 0; i < positionCount; i++) { |
| values[i] = Double.longBitsToDouble(input.getLong()); |
| } |
| } else { |
| for (int i = 0; i < positionCount; i++) { |
| if (!nullIndicators[i]) { |
| values[i] = Double.longBitsToDouble(input.getLong()); |
| } |
| } |
| } |
| return new DoubleColumn(0, positionCount, nullIndicators, values); |
| } else { |
| throw new IllegalArgumentException("Invalid data type: " + dataType); |
| } |
| } |
| |
| @Override |
| public void writeColumn(DataOutputStream output, Column column) throws IOException { |
| |
| ColumnEncoder.serializeNullIndicators(output, column); |
| |
| TSDataType dataType = column.getDataType(); |
| int positionCount = column.getPositionCount(); |
| if (TSDataType.INT64.equals(dataType)) { |
| for (int i = 0; i < positionCount; i++) { |
| if (!column.isNull(i)) { |
| output.writeLong(column.getLong(i)); |
| } |
| } |
| } else if (TSDataType.DOUBLE.equals(dataType)) { |
| for (int i = 0; i < positionCount; i++) { |
| if (!column.isNull(i)) { |
| output.writeLong(Double.doubleToLongBits(column.getDouble(i))); |
| } |
| } |
| } else { |
| throw new IllegalArgumentException("Invalid data type: " + dataType); |
| } |
| } |
| } |