| /* |
| * 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.exception.write.UnSupportedDataTypeException; |
| 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 static java.lang.Math.max; |
| import static org.apache.iotdb.tsfile.read.common.block.column.ColumnUtil.calculateBlockResetSize; |
| import static org.apache.iotdb.tsfile.utils.RamUsageEstimator.sizeOf; |
| |
| public class IntColumnBuilder implements ColumnBuilder { |
| |
| private static final int INSTANCE_SIZE = |
| (int) RamUsageEstimator.shallowSizeOfInstance(IntColumnBuilder.class); |
| public static final IntColumn NULL_VALUE_BLOCK = |
| new IntColumn(0, 1, new boolean[] {true}, new int[1]); |
| |
| private final ColumnBuilderStatus columnBuilderStatus; |
| private boolean initialized; |
| private final int initialEntryCount; |
| |
| private int positionCount; |
| private boolean hasNullValue; |
| private boolean hasNonNullValue; |
| |
| // it is assumed that these arrays are the same length |
| private boolean[] valueIsNull = new boolean[0]; |
| private int[] values = new int[0]; |
| |
| private long retainedSizeInBytes; |
| |
| public IntColumnBuilder(ColumnBuilderStatus columnBuilderStatus, int expectedEntries) { |
| this.columnBuilderStatus = columnBuilderStatus; |
| this.initialEntryCount = max(expectedEntries, 1); |
| |
| updateDataSize(); |
| } |
| |
| @Override |
| public ColumnBuilder writeInt(int value) { |
| if (values.length <= positionCount) { |
| growCapacity(); |
| } |
| |
| values[positionCount] = value; |
| |
| hasNonNullValue = true; |
| positionCount++; |
| if (columnBuilderStatus != null) { |
| columnBuilderStatus.addBytes(IntColumn.SIZE_IN_BYTES_PER_POSITION); |
| } |
| return this; |
| } |
| |
| /** Write an Object to the current entry, which should be the Integer type; */ |
| @Override |
| public ColumnBuilder writeObject(Object value) { |
| if (value instanceof Integer) { |
| writeInt((Integer) value); |
| return this; |
| } |
| throw new UnSupportedDataTypeException("IntegerColumn only support Integer data type"); |
| } |
| |
| @Override |
| public ColumnBuilder write(Column column, int index) { |
| return writeInt(column.getInt(index)); |
| } |
| |
| @Override |
| public ColumnBuilder writeTsPrimitiveType(TsPrimitiveType value) { |
| return writeInt(value.getInt()); |
| } |
| |
| @Override |
| public ColumnBuilder appendNull() { |
| if (values.length <= positionCount) { |
| growCapacity(); |
| } |
| |
| valueIsNull[positionCount] = true; |
| |
| hasNullValue = true; |
| positionCount++; |
| if (columnBuilderStatus != null) { |
| columnBuilderStatus.addBytes(IntColumn.SIZE_IN_BYTES_PER_POSITION); |
| } |
| return this; |
| } |
| |
| @Override |
| public Column build() { |
| if (!hasNonNullValue) { |
| return new RunLengthEncodedColumn(NULL_VALUE_BLOCK, positionCount); |
| } |
| return new IntColumn(0, positionCount, hasNullValue ? valueIsNull : null, values); |
| } |
| |
| @Override |
| public TSDataType getDataType() { |
| return TSDataType.INT32; |
| } |
| |
| @Override |
| public long getRetainedSizeInBytes() { |
| return retainedSizeInBytes; |
| } |
| |
| @Override |
| public ColumnBuilder newColumnBuilderLike(ColumnBuilderStatus columnBuilderStatus) { |
| return new IntColumnBuilder(columnBuilderStatus, calculateBlockResetSize(positionCount)); |
| } |
| |
| private void growCapacity() { |
| int newSize; |
| if (initialized) { |
| newSize = ColumnUtil.calculateNewArraySize(values.length); |
| } else { |
| newSize = initialEntryCount; |
| initialized = true; |
| } |
| |
| valueIsNull = Arrays.copyOf(valueIsNull, newSize); |
| values = Arrays.copyOf(values, newSize); |
| updateDataSize(); |
| } |
| |
| private void updateDataSize() { |
| retainedSizeInBytes = INSTANCE_SIZE + sizeOf(valueIsNull) + sizeOf(values); |
| if (columnBuilderStatus != null) { |
| retainedSizeInBytes += ColumnBuilderStatus.INSTANCE_SIZE; |
| } |
| } |
| } |