org.apache.flink.cdc.runtime.operators.schema.coordinator

Class SchemaManager

java.lang.Object

org.apache.flink.cdc.runtime.operators.schema.coordinator.SchemaManager

@Internal
public class SchemaManager
extends Object

Schema manager handles handles schema changes for tables, and manages historical schema versions of tables.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SchemaManager.Serializer Serializer for SchemaManager.

Field Summary

Fields

Modifier and Type	Field and Description
static SchemaManager.Serializer	SERIALIZER

Constructor Summary

Constructors

Constructor and Description
SchemaManager()
SchemaManager(Map<org.apache.flink.cdc.common.event.TableId,SortedMap<Integer,org.apache.flink.cdc.common.schema.Schema>> tableSchemas)

Method Summary

Modifier and Type	Method and Description
void	applySchemaChange(org.apache.flink.cdc.common.event.SchemaChangeEvent schemaChangeEvent) Apply schema change to a table.
boolean	equals(Object o)
Optional<org.apache.flink.cdc.common.schema.Schema>	getLatestSchema(org.apache.flink.cdc.common.event.TableId tableId) Get the latest schema of the specified table.
org.apache.flink.cdc.common.schema.Schema	getSchema(org.apache.flink.cdc.common.event.TableId tableId, int version) Get schema at the specified version of a table.
int	hashCode()
boolean	schemaExists(org.apache.flink.cdc.common.event.TableId tableId) Check if schema exists for the specified table ID.

Methods inherited from class java.lang.Object

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

Field Detail

SERIALIZER

public static final SchemaManager.Serializer SERIALIZER

Constructor Detail

SchemaManager

public SchemaManager()

SchemaManager

public SchemaManager(Map<org.apache.flink.cdc.common.event.TableId,SortedMap<Integer,org.apache.flink.cdc.common.schema.Schema>> tableSchemas)

Method Detail

schemaExists

public final boolean schemaExists(org.apache.flink.cdc.common.event.TableId tableId)

Check if schema exists for the specified table ID.

getLatestSchema

public Optional<org.apache.flink.cdc.common.schema.Schema> getLatestSchema(org.apache.flink.cdc.common.event.TableId tableId)

Get the latest schema of the specified table.

getSchema

public org.apache.flink.cdc.common.schema.Schema getSchema(org.apache.flink.cdc.common.event.TableId tableId,
                                                           int version)

Get schema at the specified version of a table.

applySchemaChange

public void applySchemaChange(org.apache.flink.cdc.common.event.SchemaChangeEvent schemaChangeEvent)

Apply schema change to a table.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object