| /* |
| * 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 org.apache.iotdb.tsfile.utils.RamUsageEstimator; |
| import org.apache.iotdb.tsfile.utils.TsPrimitiveType; |
| |
| import java.util.Arrays; |
| import java.util.Optional; |
| |
| import static org.apache.iotdb.tsfile.read.common.block.column.ColumnUtil.checkValidRegion; |
| import static org.apache.iotdb.tsfile.utils.RamUsageEstimator.sizeOfBooleanArray; |
| import static org.apache.iotdb.tsfile.utils.RamUsageEstimator.sizeOfFloatArray; |
| |
| public class FloatColumn implements Column { |
| |
| private static final int INSTANCE_SIZE = |
| (int) RamUsageEstimator.shallowSizeOfInstance(FloatColumn.class); |
| public static final int SIZE_IN_BYTES_PER_POSITION = Float.BYTES + Byte.BYTES; |
| |
| private final int arrayOffset; |
| private final int positionCount; |
| private final boolean[] valueIsNull; |
| private final float[] values; |
| |
| private final long retainedSizeInBytes; |
| |
| public FloatColumn(int positionCount, Optional<boolean[]> valueIsNull, float[] values) { |
| this(0, positionCount, valueIsNull.orElse(null), values); |
| } |
| |
| FloatColumn(int arrayOffset, int positionCount, boolean[] valueIsNull, float[] values) { |
| if (arrayOffset < 0) { |
| throw new IllegalArgumentException("arrayOffset is negative"); |
| } |
| this.arrayOffset = arrayOffset; |
| if (positionCount < 0) { |
| throw new IllegalArgumentException("positionCount is negative"); |
| } |
| this.positionCount = positionCount; |
| |
| if (values.length - arrayOffset < positionCount) { |
| throw new IllegalArgumentException("values length is less than positionCount"); |
| } |
| this.values = values; |
| |
| if (valueIsNull != null && valueIsNull.length - arrayOffset < positionCount) { |
| throw new IllegalArgumentException("isNull length is less than positionCount"); |
| } |
| this.valueIsNull = valueIsNull; |
| |
| retainedSizeInBytes = |
| INSTANCE_SIZE + sizeOfFloatArray(positionCount) + sizeOfBooleanArray(positionCount); |
| } |
| |
| @Override |
| public TSDataType getDataType() { |
| return TSDataType.FLOAT; |
| } |
| |
| @Override |
| public ColumnEncoding getEncoding() { |
| return ColumnEncoding.INT32_ARRAY; |
| } |
| |
| @Override |
| public float getFloat(int position) { |
| return values[position + arrayOffset]; |
| } |
| |
| @Override |
| public float[] getFloats() { |
| return values; |
| } |
| |
| @Override |
| public Object getObject(int position) { |
| return getFloat(position); |
| } |
| |
| @Override |
| public TsPrimitiveType getTsPrimitiveType(int position) { |
| return new TsPrimitiveType.TsFloat(getFloat(position)); |
| } |
| |
| @Override |
| public boolean mayHaveNull() { |
| return valueIsNull != null; |
| } |
| |
| @Override |
| public boolean isNull(int position) { |
| return valueIsNull != null && valueIsNull[position + arrayOffset]; |
| } |
| |
| @Override |
| public boolean[] isNull() { |
| if (valueIsNull == null) { |
| boolean[] res = new boolean[positionCount]; |
| Arrays.fill(res, false); |
| return res; |
| } |
| return valueIsNull; |
| } |
| |
| @Override |
| public int getPositionCount() { |
| return positionCount; |
| } |
| |
| @Override |
| public long getRetainedSizeInBytes() { |
| return retainedSizeInBytes; |
| } |
| |
| @Override |
| public Column getRegion(int positionOffset, int length) { |
| checkValidRegion(getPositionCount(), positionOffset, length); |
| return new FloatColumn(positionOffset + arrayOffset, length, valueIsNull, values); |
| } |
| |
| @Override |
| public Column subColumn(int fromIndex) { |
| if (fromIndex > positionCount) { |
| throw new IllegalArgumentException("fromIndex is not valid"); |
| } |
| return new FloatColumn(arrayOffset + fromIndex, positionCount - fromIndex, valueIsNull, values); |
| } |
| |
| @Override |
| public void reverse() { |
| for (int i = arrayOffset, j = arrayOffset + positionCount - 1; i < j; i++, j--) { |
| float valueTmp = values[i]; |
| values[i] = values[j]; |
| values[j] = valueTmp; |
| } |
| if (valueIsNull != null) { |
| for (int i = arrayOffset, j = arrayOffset + positionCount - 1; i < j; i++, j--) { |
| boolean isNullTmp = valueIsNull[i]; |
| valueIsNull[i] = valueIsNull[j]; |
| valueIsNull[j] = isNullTmp; |
| } |
| } |
| } |
| |
| @Override |
| public int getInstanceSize() { |
| return INSTANCE_SIZE; |
| } |
| } |