com.google.cloud.spanner

Class Database

java.lang.Object

com.google.cloud.spanner.DatabaseInfo

com.google.cloud.spanner.Database

public class Database
extends DatabaseInfo

Represents a Cloud Spanner database. Database adds a layer of service related functionality over DatabaseInfo.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.cloud.spanner.DatabaseInfo

DatabaseInfo.State

Constructor Summary

Constructors

Constructor and Description
Database(DatabaseId id, DatabaseInfo.State state, DatabaseAdminClient dbClient)

Method Summary

Modifier and Type	Method and Description
void	drop() Drops this database.
Iterable<String>	getDdl() Returns the schema of a Cloud Spanner database as a list of formatted DDL statements.
Database	reload() Fetches the database's current information.
OperationFuture<Void,com.google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata>	updateDdl(Iterable<String> statements, String operationId) Enqueues the given DDL statements to be applied, in order but not necessarily all at once, to the database schema at some point (or points) in the future.

Methods inherited from class com.google.cloud.spanner.DatabaseInfo

equals, getId, getState, hashCode, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Database

public Database(DatabaseId id,
                DatabaseInfo.State state,
                DatabaseAdminClient dbClient)

Method Detail

reload

public Database reload()
                throws SpannerException

Fetches the database's current information.

Throws:

SpannerException

updateDdl

public OperationFuture<Void,com.google.spanner.admin.database.v1.UpdateDatabaseDdlMetadata> updateDdl(Iterable<String> statements,
                                                                                                      String operationId)
                                                                                               throws SpannerException

Enqueues the given DDL statements to be applied, in order but not necessarily all at once, to the database schema at some point (or points) in the future. The server checks that the statements are executable (syntactically valid, name tables that exist, etc.) before enqueueing them, but they may still fail upon later execution (e.g., if a statement from another batch of statements is applied first and it conflicts in some way, or if there is some data-related problem like a `NULL` value in a column to which `NOT NULL` would be added). If a statement fails, all subsequent statements in the batch are automatically cancelled.

Parameters:

operationId - Operation id assigned to this operation. If null, system will autogenerate one. This must be unique within a database abd must be a valid identifier [a-zA-Z][a-zA-Z0-9_]*.

Throws:

SpannerException

drop

public void drop()
          throws SpannerException

Drops this database.

Throws:

SpannerException

getDdl

public Iterable<String> getDdl()
                        throws SpannerException

Returns the schema of a Cloud Spanner database as a list of formatted DDL statements. This method does not show pending schema updates.

Throws:

SpannerException