Package org.apache.druid.segment.column

Class LongsColumn

java.lang.Object

org.apache.druid.segment.column.LongsColumn

All Implemented Interfaces:

Closeable, AutoCloseable, HotLoopCallee, BaseColumn, NumericColumn, SelectableColumn

public class LongsColumn
extends Object
implements NumericColumn

Method Summary

Modifier and Type	Method	Description
<T> T	as(Class<T> clazz)	Request an implementation of a particular interface.
void	close()
static LongsColumn	create(ColumnarLongs column, ImmutableBitmap nullValueBitmap)	Factory method to create LongsColumn.
long	getLongSingleValueRow(int rowNum)
void	inspectRuntimeShape(RuntimeShapeInspector inspector)	Implementations of this method should call inspector.visit() with all fields of this class, which meet two conditions: 1.
int	length()	Returns the row count of this column.
ColumnValueSelector<?>	makeColumnValueSelector(ReadableOffset offset)
VectorValueSelector	makeVectorValueSelector(ReadableVectorOffset offset)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.druid.segment.column.BaseColumn

makeVectorObjectSelector

Method Details

create

public static LongsColumn create(ColumnarLongs column,
 ImmutableBitmap nullValueBitmap)

Factory method to create LongsColumn.

length

public int length()

Description copied from interface: NumericColumn

Returns the row count of this column. Note that this method currently counts only non-null values. Using this method to get the length of a column that contains nulls will not work as expected. This method should be used only for non-nullable numeric columns such as the "__time" column.

Specified by:

length in interface NumericColumn

makeColumnValueSelector

public ColumnValueSelector<?> makeColumnValueSelector(ReadableOffset offset)

Specified by:

makeColumnValueSelector in interface BaseColumn

makeVectorValueSelector

public VectorValueSelector makeVectorValueSelector(ReadableVectorOffset offset)

Specified by:

makeVectorValueSelector in interface BaseColumn

getLongSingleValueRow

public long getLongSingleValueRow(int rowNum)

Specified by:

getLongSingleValueRow in interface NumericColumn

as

@Nullable
public <T> T as(Class<T> clazz)

Description copied from interface: SelectableColumn

Request an implementation of a particular interface. Physical nested columns, and virtual columns that act as a nested column, should implement:

• NestedColumnTypeInspector, required.
• NestedColumnSelectorFactory, required.
• NestedVectorColumnSelectorFactory, required.
• NestedColumnIndexSupplier, if the column has indexes.

Specified by:

as in interface SelectableColumn

Type Parameters:

T - desired interface

Parameters:

clazz - desired interface

Returns:

instance of clazz, or null if the interface is not supported by this segment

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface NumericColumn

inspectRuntimeShape

public void inspectRuntimeShape(RuntimeShapeInspector inspector)

Description copied from interface: HotLoopCallee

Implementations of this method should call inspector.visit() with all fields of this class, which meet two conditions: 1. They are used in methods of this class, annotated with CalledFromHotLoop 2. They are either: a. Nullable objects b. Instances of HotLoopCallee c. Objects, which don't always have a specific class in runtime. For example, a field of type Set could be HashSet or TreeSet in runtime, depending on how this instance (the instance on which inspectRuntimeShape() is called) is configured. d. ByteBuffer or similar objects, where byte order matters e. boolean flags, affecting branch taking f. Arrays of objects, meeting any of conditions a-e.

Specified by:

inspectRuntimeShape in interface HotLoopCallee