com.lancedb.lance.operation

Class DataReplacement

java.lang.Object

com.lancedb.lance.operation.DataReplacement

All Implemented Interfaces:

Operation

public class DataReplacement
extends Object
implements Operation

Replace data in a column in the dataset with new data. This is used for null column population where we replace an entirely null column with a new column that has data.

This operation will only allow replacing files that contain the same schema e.g. if the original files contain columns A, B, C and the new files contain only columns A, B then the operation is not allowed.

Corollary to the above: the operation will also not allow replacing files unless the affected columns all have the same datafile layout across the fragments being replaced.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DataReplacement.Builder Builder for DataReplacement.
static class	DataReplacement.DataReplacementGroup A group of data replacement, containing a fragment ID and a new data file.

Method Summary

Modifier and Type	Method and Description
static DataReplacement.Builder	builder() Create a new builder for DataReplacement.
boolean	equals(Object o)
String	name() We use this name to align with the Rust operation enum underlying in JNI.
List<DataReplacement.DataReplacementGroup>	replacements() Get the list of data replacement groups.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.lancedb.lance.operation.Operation

release

Method Detail

replacements

public List<DataReplacement.DataReplacementGroup> replacements()

Get the list of data replacement groups.

Returns:

the list of data replacement groups

name

public String name()

Description copied from interface: Operation

We use this name to align with the Rust operation enum underlying in JNI.

Specified by:

name in interface Operation

Returns:

the name of the operation.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

builder

public static DataReplacement.Builder builder()

Create a new builder for DataReplacement.

Returns:

a new builder