io.debezium.relational.ddl

Class DdlChanges

java.lang.Object

io.debezium.relational.ddl.DdlChanges

All Implemented Interfaces:

DdlParserListener

@NotThreadSafe
public class DdlChanges
extends Object
implements DdlParserListener

A DdlParserListener that accumulates changes, allowing them to be consumed in the same order by database.

Author:

Randall Hauch

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	DdlChanges.DatabaseEventConsumer
static interface	DdlChanges.DatabaseStatementConsumer
static interface	DdlChanges.DatabaseStatementStringConsumer

Nested classes/interfaces inherited from interface io.debezium.relational.ddl.DdlParserListener

DdlParserListener.DatabaseAlteredEvent, DdlParserListener.DatabaseCreatedEvent, DdlParserListener.DatabaseDroppedEvent, DdlParserListener.DatabaseEvent, DdlParserListener.Event, DdlParserListener.EventType, DdlParserListener.SetVariableEvent, DdlParserListener.TableAlteredEvent, DdlParserListener.TableCreatedEvent, DdlParserListener.TableDroppedEvent, DdlParserListener.TableEvent, DdlParserListener.TableIndexCreatedEvent, DdlParserListener.TableIndexDroppedEvent, DdlParserListener.TableIndexEvent, DdlParserListener.TableTruncatedEvent

Field Summary

Fields

Modifier and Type	Field and Description
private Set<String>	databaseNames
private List<DdlParserListener.Event>	events
private String	terminator

Constructor Summary

Constructors

Constructor and Description
DdlChanges() Create a new changes object with ';' as the terminator token.
DdlChanges(String terminator) Create a new changes object with the designated terminator token.

Method Summary

Modifier and Type	Method and Description
boolean	applyToMoreDatabasesThan(String name)
protected String	getDatabase(DdlParserListener.Event event)
void	groupEventsByDatabase(DdlChanges.DatabaseEventConsumer consumer) Consume the events in the same order they were recorded, but grouped by database name.
void	groupStatementsByDatabase(DdlChanges.DatabaseStatementConsumer consumer) Consume the events in the same order they were recorded, but grouped by database name.
void	groupStatementStringsByDatabase(DdlChanges.DatabaseStatementStringConsumer consumer) Consume the events in the same order they were recorded, but grouped by database name.
void	handle(DdlParserListener.Event event) Handle a DDL event.
boolean	isEmpty()
DdlChanges	reset() Clear all accumulated changes.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

terminator

private final String terminator

events

private final List<DdlParserListener.Event> events

databaseNames

private final Set<String> databaseNames

Constructor Detail

DdlChanges

public DdlChanges()

Create a new changes object with ';' as the terminator token.

DdlChanges

public DdlChanges(String terminator)

Create a new changes object with the designated terminator token.

Parameters:

terminator - the token used to terminate each statement; may be null

Method Detail

reset

public DdlChanges reset()

Clear all accumulated changes.

Returns:

this object for method chaining; never null

handle

public void handle(DdlParserListener.Event event)

Description copied from interface: DdlParserListener

Handle a DDL event.

Specified by:

handle in interface DdlParserListener

Parameters:

event - the DDL event; never null

groupStatementStringsByDatabase

public void groupStatementStringsByDatabase(DdlChanges.DatabaseStatementStringConsumer consumer)

Consume the events in the same order they were recorded, but grouped by database name. Multiple sequential statements that were applied to the same database are grouped together.

Parameters:

consumer - the consumer

groupStatementsByDatabase

public void groupStatementsByDatabase(DdlChanges.DatabaseStatementConsumer consumer)

Consume the events in the same order they were recorded, but grouped by database name. Multiple sequential statements that were applied to the same database are grouped together.

Parameters:

consumer - the consumer

groupEventsByDatabase

public void groupEventsByDatabase(DdlChanges.DatabaseEventConsumer consumer)

Consume the events in the same order they were recorded, but grouped by database name. Multiple sequential statements that were applied to the same database are grouped together.

Parameters:

consumer - the consumer

getDatabase

protected String getDatabase(DdlParserListener.Event event)

isEmpty

public boolean isEmpty()

applyToMoreDatabasesThan

public boolean applyToMoreDatabasesThan(String name)

toString

public String toString()

Overrides:

toString in class Object