org.apache.cassandra.schema

Class SchemaKeyspace

java.lang.Object

org.apache.cassandra.schema.SchemaKeyspace

public final class SchemaKeyspace
extends java.lang.Object

system_schema.* tables and methods for manipulating them.

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.List<CFMetaData>	ALL_TABLE_METADATA

Method Summary

Modifier and Type	Method and Description
static void	addTableToSchemaMutation(CFMetaData table, boolean withColumnsAndTriggers, Mutation.SimpleBuilder builder)
static Pair<java.util.UUID,java.util.UUID>	calculateSchemaDigest() Read schema from system keyspace and calculate MD5 digest of every row, resulting digest will be converted into UUID which would act as content-based version of the schema.
static java.util.Collection<Mutation>	convertSchemaToMutations()
static ColumnDefinition	createColumnFromRow(UntypedResultSet.Row row, Types types)
static TableParams	createTableParamsFromRow(UntypedResultSet.Row row)
static Mutation.SimpleBuilder	dropTypeFromSchemaMutation(KeyspaceMetadata keyspace, UserType type, long timestamp)
static AbstractType<?>	expandUserTypes(AbstractType<?> original)
static Keyspaces	fetchNonSystemKeyspaces()
static Mutation.SimpleBuilder	makeCreateAggregateMutation(KeyspaceMetadata keyspace, UDAggregate aggregate, long timestamp)
static Mutation.SimpleBuilder	makeCreateFunctionMutation(KeyspaceMetadata keyspace, UDFunction function, long timestamp)
static Mutation.SimpleBuilder	makeCreateKeyspaceMutation(KeyspaceMetadata keyspace, long timestamp)
static Mutation.SimpleBuilder	makeCreateKeyspaceMutation(java.lang.String name, KeyspaceParams params, long timestamp)
static Mutation.SimpleBuilder	makeCreateTableMutation(KeyspaceMetadata keyspace, CFMetaData table, long timestamp)
static Mutation.SimpleBuilder	makeCreateTypeMutation(KeyspaceMetadata keyspace, UserType type, long timestamp)
static Mutation.SimpleBuilder	makeCreateViewMutation(KeyspaceMetadata keyspace, ViewDefinition view, long timestamp)
static Mutation.SimpleBuilder	makeDropAggregateMutation(KeyspaceMetadata keyspace, UDAggregate aggregate, long timestamp)
static Mutation.SimpleBuilder	makeDropFunctionMutation(KeyspaceMetadata keyspace, UDFunction function, long timestamp)
static Mutation.SimpleBuilder	makeDropKeyspaceMutation(KeyspaceMetadata keyspace, long timestamp)
static Mutation.SimpleBuilder	makeDropTableMutation(KeyspaceMetadata keyspace, CFMetaData table, long timestamp)
static Mutation.SimpleBuilder	makeDropViewMutation(KeyspaceMetadata keyspace, ViewDefinition view, long timestamp)
static Mutation.SimpleBuilder	makeUpdateTableMutation(KeyspaceMetadata keyspace, CFMetaData oldTable, CFMetaData newTable, long timestamp)
static Mutation.SimpleBuilder	makeUpdateViewMutation(Mutation.SimpleBuilder builder, ViewDefinition oldView, ViewDefinition newView)
static void	mergeSchema(java.util.Collection<Mutation> mutations)
static void	mergeSchemaAndAnnounceVersion(java.util.Collection<Mutation> mutations) Merge remote schema in form of mutations with local and mutate ks/cf metadata objects (which also involves fs operations on add/drop ks/cf)
static KeyspaceMetadata	metadata()
static void	reloadSchemaAndAnnounceVersion()
static void	saveSystemKeyspacesSchema() Add entries to system_schema.* for the hardcoded system keyspaces
static void	truncate()

Methods inherited from class java.lang.Object

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

Field Detail

ALL_TABLE_METADATA

public static final java.util.List<CFMetaData> ALL_TABLE_METADATA

Method Detail

metadata

public static KeyspaceMetadata metadata()

saveSystemKeyspacesSchema

public static void saveSystemKeyspacesSchema()

Add entries to system_schema.* for the hardcoded system keyspaces

truncate

public static void truncate()

calculateSchemaDigest

public static Pair<java.util.UUID,java.util.UUID> calculateSchemaDigest()

Read schema from system keyspace and calculate MD5 digest of every row, resulting digest will be converted into UUID which would act as content-based version of the schema. This implementation is special cased for 3.11 as it returns the schema digests for 3.11 and 3.0 - i.e. with and without the beloved cdc column.

convertSchemaToMutations

public static java.util.Collection<Mutation> convertSchemaToMutations()

makeCreateKeyspaceMutation

public static Mutation.SimpleBuilder makeCreateKeyspaceMutation(java.lang.String name,
                                                                KeyspaceParams params,
                                                                long timestamp)

makeCreateKeyspaceMutation

public static Mutation.SimpleBuilder makeCreateKeyspaceMutation(KeyspaceMetadata keyspace,
                                                                long timestamp)

makeDropKeyspaceMutation

public static Mutation.SimpleBuilder makeDropKeyspaceMutation(KeyspaceMetadata keyspace,
                                                              long timestamp)

makeCreateTypeMutation

public static Mutation.SimpleBuilder makeCreateTypeMutation(KeyspaceMetadata keyspace,
                                                            UserType type,
                                                            long timestamp)

dropTypeFromSchemaMutation

public static Mutation.SimpleBuilder dropTypeFromSchemaMutation(KeyspaceMetadata keyspace,
                                                                UserType type,
                                                                long timestamp)

makeCreateTableMutation

public static Mutation.SimpleBuilder makeCreateTableMutation(KeyspaceMetadata keyspace,
                                                             CFMetaData table,
                                                             long timestamp)

addTableToSchemaMutation

public static void addTableToSchemaMutation(CFMetaData table,
                                            boolean withColumnsAndTriggers,
                                            Mutation.SimpleBuilder builder)

makeUpdateTableMutation

public static Mutation.SimpleBuilder makeUpdateTableMutation(KeyspaceMetadata keyspace,
                                                             CFMetaData oldTable,
                                                             CFMetaData newTable,
                                                             long timestamp)

makeDropTableMutation

public static Mutation.SimpleBuilder makeDropTableMutation(KeyspaceMetadata keyspace,
                                                           CFMetaData table,
                                                           long timestamp)

makeCreateViewMutation

public static Mutation.SimpleBuilder makeCreateViewMutation(KeyspaceMetadata keyspace,
                                                            ViewDefinition view,
                                                            long timestamp)

makeDropViewMutation

public static Mutation.SimpleBuilder makeDropViewMutation(KeyspaceMetadata keyspace,
                                                          ViewDefinition view,
                                                          long timestamp)

makeUpdateViewMutation

public static Mutation.SimpleBuilder makeUpdateViewMutation(Mutation.SimpleBuilder builder,
                                                            ViewDefinition oldView,
                                                            ViewDefinition newView)

makeCreateFunctionMutation

public static Mutation.SimpleBuilder makeCreateFunctionMutation(KeyspaceMetadata keyspace,
                                                                UDFunction function,
                                                                long timestamp)

makeDropFunctionMutation

public static Mutation.SimpleBuilder makeDropFunctionMutation(KeyspaceMetadata keyspace,
                                                              UDFunction function,
                                                              long timestamp)

makeCreateAggregateMutation

public static Mutation.SimpleBuilder makeCreateAggregateMutation(KeyspaceMetadata keyspace,
                                                                 UDAggregate aggregate,
                                                                 long timestamp)

makeDropAggregateMutation

public static Mutation.SimpleBuilder makeDropAggregateMutation(KeyspaceMetadata keyspace,
                                                               UDAggregate aggregate,
                                                               long timestamp)

fetchNonSystemKeyspaces

public static Keyspaces fetchNonSystemKeyspaces()

createTableParamsFromRow

public static TableParams createTableParamsFromRow(UntypedResultSet.Row row)

createColumnFromRow

public static ColumnDefinition createColumnFromRow(UntypedResultSet.Row row,
                                                   Types types)

reloadSchemaAndAnnounceVersion

public static void reloadSchemaAndAnnounceVersion()

mergeSchemaAndAnnounceVersion

public static void mergeSchemaAndAnnounceVersion(java.util.Collection<Mutation> mutations)
                                          throws ConfigurationException

Merge remote schema in form of mutations with local and mutate ks/cf metadata objects (which also involves fs operations on add/drop ks/cf)

Parameters:

mutations - the schema changes to apply

Throws:

ConfigurationException - If one of metadata attributes has invalid value

mergeSchema

public static void mergeSchema(java.util.Collection<Mutation> mutations)

expandUserTypes

public static AbstractType<?> expandUserTypes(AbstractType<?> original)