com.google.cloud.bigtable.data.v2.models

Class ConditionalRowMutation

java.lang.Object

com.google.cloud.bigtable.data.v2.models.ConditionalRowMutation

All Implemented Interfaces:

Serializable

public final class ConditionalRowMutation
extends Object
implements Serializable

Mutates a row atomically based on the output of a condition filter.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
ConditionalRowMutation	condition(Filters.Filter condition) The filter to be applied to the contents of the specified row.
static ConditionalRowMutation	create(String tableId, ByteString rowKey) Creates a new instance of the mutation builder.
static ConditionalRowMutation	create(String tableId, String rowKey) Creates a new instance of the mutation builder.
ConditionalRowMutation	otherwise(Mutation mutation) Adds changes to be atomically applied to the specified row if the condition does not yields any cells when applied to the row.
ConditionalRowMutation	then(Mutation mutation) Adds changes to be atomically applied to the specified row if the condition yields at least one cell when applied to the row.
com.google.bigtable.v2.CheckAndMutateRowRequest	toProto(com.google.cloud.bigtable.data.v2.internal.RequestContext requestContext) Creates the underlying CheckAndMutateRowRequest protobuf.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static ConditionalRowMutation create(String tableId,
                                            String rowKey)

Creates a new instance of the mutation builder.

create

public static ConditionalRowMutation create(String tableId,
                                            ByteString rowKey)

Creates a new instance of the mutation builder.

condition

public ConditionalRowMutation condition(@Nonnull
                                        Filters.Filter condition)

The filter to be applied to the contents of the specified row. Depending on whether or not any results are yielded, either the mutations added via then(Mutation) or otherwise(Mutation) will be executed. If unset, checks that the row contains any values at all.

Unlike then(Mutation) and otherwise(Mutation), only a single condition can be set. However that filter can be a Filters.chain() or Filters.interleave(), which can wrap multiple other filters.

WARNING: Filters.condition(Filter) is not supported.

then

public ConditionalRowMutation then(@Nonnull
                                   Mutation mutation)

Adds changes to be atomically applied to the specified row if the condition yields at least one cell when applied to the row.

Each mutation can specify multiple changes and the changes are accumulated each time this method is called. Mutations are applied in order, meaning that earlier mutations can be masked by later ones. Must contain at least one entry if otherwise(Mutation) is empty, and at most 100000.

otherwise

public ConditionalRowMutation otherwise(@Nonnull
                                        Mutation mutation)

Adds changes to be atomically applied to the specified row if the condition does not yields any cells when applied to the row.

Each mutation can specify multiple changes and the changes are accumulated each time this method is called. Mutations are applied in order, meaning that earlier mutations can be masked by later ones. Must contain at least one entry if then(Mutation) is empty, and at most 100000.

toProto

@InternalApi
public com.google.bigtable.v2.CheckAndMutateRowRequest toProto(com.google.cloud.bigtable.data.v2.internal.RequestContext requestContext)

Creates the underlying CheckAndMutateRowRequest protobuf.

This method is considered an internal implementation detail and not meant to be used by applications.