public final class Options implements Serializable
Specifies options for various spanner operations
Static Methods
bufferRows(int bufferRows)
public static Options.ReadAndQueryOption bufferRows(int bufferRows)
Parameter
| Name | Description |
| bufferRows | int
|
Returns
commitStats()
public static Options.TransactionOption commitStats()
Specifying this instructs the transaction to request CommitStats from the backend.
filter(String filter)
public static Options.ListOption filter(String filter)
Specifying this will cause the given filter to be applied to the list operation. List
operations that support this options are:
If this option is passed to any other list operation, it will throw an
IllegalArgumentException.
| Name | Description |
| filter | String
An expression for filtering the results of the request. Filter rules are case
insensitive. Some examples of using filters are:
- name:* The entity has a name.
- name:Howl The entity's name contains "howl".
- name:HOWL Equivalent to above.
- NAME:howl Equivalent to above.
- labels.env:* The entity has the label env.
- labels.env:dev The entity has a label env whose value contains "dev".
- name:howl labels.env:dev The entity's name contains "howl" and it has the label env
whose value contains "dev".
|
Returns
limit(long limit)
public static Options.ReadOption limit(long limit)
Specifying this will cause the read to yield at most this many rows. This should be greater
than 0.
pageSize(int pageSize)
public static Options.ListOption pageSize(int pageSize)
Specifying this will cause the list operations to fetch at most this many records in a page.
| Name | Description |
| pageSize | int
|
Returns
pageToken(String pageToken)
public static Options.ListOption pageToken(String pageToken)
Specifying this will cause the list operation to start fetching the record from this onwards.
| Name | Description |
| pageToken | String
|
Returns
prefetchChunks(int prefetchChunks)
public static Options.ReadAndQueryOption prefetchChunks(int prefetchChunks)
Specifying this will allow the client to prefetch up to prefetchChunks
PartialResultSet chunks for read and query. The data size of each chunk depends on the server
implementation but a good rule of thumb is that each chunk will be up to 1 MiB. Larger values
reduce the likelihood of blocking while consuming results at the cost of greater memory
consumption. prefetchChunks should be greater than 0. To get good performance choose a
value that is large enough to allow buffering of chunks for an entire row. Apart from the
buffered chunks, there can be at most one more row buffered in the client.
| Name | Description |
| prefetchChunks | int
|
Returns
priority(Options.RpcPriority priority)
public static Options.ReadQueryUpdateTransactionOption priority(Options.RpcPriority priority)
Specifies the priority to use for the RPC.
tag(String name)
public static Options.ReadQueryUpdateTransactionOption tag(String name)
Specifying this will cause the reads, queries, updates and writes operations statistics
collection to be grouped by tag.
Methods
equals(Object o)
public boolean equals(Object o)
Parameter
Returns
Overrides
hashCode()
Returns
Overrides
toString()
Returns
Overrides
