Package org.apache.iotdb.tsfile.read.common.block

Class TsBlock

  • public class TsBlock
extends java.lang.Object
    Intermediate result for most of ExecOperators. The TsBlock contains data from one or more columns and constructs them as a row based view The columns can be series, aggregation result for one series or scalar value (such as deviceName).

    • Field Detail

      • INSTANCE_SIZE

        public static final int INSTANCE_SIZE

    • Constructor Detail

      • TsBlock

        public TsBlock​(int positionCount)

      • TsBlock

        public TsBlock​(int positionCount,
               TimeColumn timeColumn,
               Column... valueColumns)

    • Method Detail

      • wrapBlocksWithoutCopy

        public static TsBlock wrapBlocksWithoutCopy​(int positionCount,
                                            TimeColumn timeColumn,
                                            Column[] valueColumns)
        Visible to give trusted classes like TsBlockBuilder access to a constructor that doesn't defensively copy the valueColumns

      • getPositionCount

        public int getPositionCount()

      • getStartTime

        public long getStartTime()

      • getEndTime

        public long getEndTime()

      • isEmpty

        public boolean isEmpty()

      • getRetainedSizeInBytes

        public long getRetainedSizeInBytes()

      • getRegion

        public TsBlock getRegion​(int positionOffset,
                         int length)
        Parameters:
        positionOffset - start offset
        length - slice length
        Returns:
        view of current TsBlock start from positionOffset to positionOffset + length

      • appendValueColumn

        public TsBlock appendValueColumn​(Column column)

      • insertValueColumn

        public TsBlock insertValueColumn​(int index,
                                 Column column)
        Attention. This method uses System.arraycopy() to extend the valueColumn array, so its performance is not ensured if you have many insert operations.

      • subTsBlock

        public TsBlock subTsBlock​(int fromIndex)
        This method will create a temporary view of origin tsBlock, which will reuse the arrays of columns but with different offset. It can be used where you want to skip some points when getting iterator.

      • skipFirst

        public TsBlock skipFirst()

      • getTimeByIndex

        public long getTimeByIndex​(int index)

      • getValueColumnCount

        public int getValueColumnCount()

      • getTimeColumn

        public TimeColumn getTimeColumn()

      • getValueColumns

        public Column[] getValueColumns()

      • getColumn

        public Column getColumn​(int columnIndex)

      • getTimeAndValueColumn

        public Column[] getTimeAndValueColumn​(int columnIndex)

      • getColumns

        public Column[] getColumns​(int[] columnIndexes)

      • reverse

        public void reverse()

      • getTsBlockAlignedRowIterator

        public org.apache.iotdb.tsfile.read.common.block.TsBlock.TsBlockAlignedRowIterator getTsBlockAlignedRowIterator()
        Only used for the batch data of vector time series.

      • getTotalInstanceSize

        public int getTotalInstanceSize()