org.springframework.integration.jdbc
Class JdbcMessageStore

java.lang.Object
  org.springframework.integration.store.AbstractMessageGroupStore
      org.springframework.integration.jdbc.JdbcMessageStore

All Implemented Interfaces:

Iterable<MessageGroup>, MessageGroupStore, MessageStore

public class JdbcMessageStore
extends AbstractMessageGroupStore
implements MessageStore

Implementation of MessageStore using a relational database via JDBC. SQL scripts to create the necessary tables are packaged as org/springframework/integration/jdbc/schema-*.sql, where * is the target database type.

Since:

2.0

Author:

Dave Syer

Field Summary

static String	CREATED_DATE_KEY The name of the message header that stores a timestamp for the time the message was inserted.
static int	DEFAULT_LONG_STRING_LENGTH
static String	DEFAULT_TABLE_PREFIX Default value for the table prefix property.
static String	SAVED_KEY The name of the message header that stores a flag to indicate that the message has been saved.

Constructor Summary

JdbcMessageStore()
Convenient constructor for configuration use.

JdbcMessageStore(DataSource dataSource)
Create a MessageStore with all mandatory properties.

Method Summary

<T> Message<T>	addMessage(Message<T> message) Put the provided Message into the MessageStore.
MessageGroup	addMessageToGroup(Object groupId, Message<?> message) Store a message with an association to a group id.
void	afterPropertiesSet() Check mandatory properties (data source and incrementer).
Message<?>	getMessage(UUID id) Return the Message with the given id, or null if no Message with that id exists in the MessageStore.
MessageGroup	getMessageGroup(Object groupId) Return all Messages currently in the MessageStore that were stored using MessageGroupStore.addMessageToGroup(Object, Message) with this group id.
protected String	getQuery(String base) Replace patterns in the input to produce a valid SQL query.
Iterator<MessageGroup>	iterator()
MessageGroup	markMessageGroup(MessageGroup group) Persist the mark on all the messages from the group.
Message<?>	removeMessage(UUID id) Remove the Message with the given id from the MessageStore, if present, and return it.
MessageGroup	removeMessageFromGroup(Object groupId, Message<?> messageToMark) Persist a mark on a single message from the group.
void	removeMessageGroup(Object groupId) Remove the message group with this id.
void	setDataSource(DataSource dataSource) The JDBC DataSource to use when interacting with the database.
void	setJdbcTemplate(JdbcOperations jdbcTemplate) The JdbcOperations to use when interacting with the database.
void	setLobHandler(LobHandler lobHandler) Override the LobHandler that is used to create and unpack large objects in SQL queries.
void	setRegion(String region) A unique grouping identifier for all messages persisted with this store.
void	setTablePrefix(String tablePrefix) Public setter for the table prefix property.

Methods inherited from class org.springframework.integration.store.AbstractMessageGroupStore

expireMessageGroups, registerMessageGroupExpiryCallback, setExpiryCallbacks

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_TABLE_PREFIX

public static final String DEFAULT_TABLE_PREFIX

Default value for the table prefix property.

See Also:

Constant Field Values

DEFAULT_LONG_STRING_LENGTH

public static final int DEFAULT_LONG_STRING_LENGTH

See Also:

Constant Field Values

SAVED_KEY

public static final String SAVED_KEY

The name of the message header that stores a flag to indicate that the message has been saved. This is an optimization for the put method.

CREATED_DATE_KEY

public static final String CREATED_DATE_KEY

The name of the message header that stores a timestamp for the time the message was inserted.

Constructor Detail

JdbcMessageStore

public JdbcMessageStore()

Convenient constructor for configuration use.

JdbcMessageStore

public JdbcMessageStore(DataSource dataSource)

Create a MessageStore with all mandatory properties.

Parameters:

dataSource - a DataSource

Method Detail

getQuery

protected String getQuery(String base)

Replace patterns in the input to produce a valid SQL query. This implementation replaces the table prefix.

Parameters:

base - the SQL query to be transformed

Returns:

a transformed query with replacements

setTablePrefix

public void setTablePrefix(String tablePrefix)

Public setter for the table prefix property. This will be prefixed to all the table names before queries are executed. Defaults to DEFAULT_TABLE_PREFIX.

Parameters:

tablePrefix - the tablePrefix to set

setRegion

public void setRegion(String region)

A unique grouping identifier for all messages persisted with this store. Using multiple regions allows the store to be partitioned (if necessary) for different purposes. Defaults to DEFAULT.

Parameters:

region - the region name to set

setDataSource

public void setDataSource(DataSource dataSource)

The JDBC DataSource to use when interacting with the database. Either this property can be set or the jdbcTemplate.

Parameters:

dataSource - a DataSource

setJdbcTemplate

public void setJdbcTemplate(JdbcOperations jdbcTemplate)

The JdbcOperations to use when interacting with the database. Either this property can be set or the dataSource.

Parameters:

jdbcTemplate - a JdbcOperations

setLobHandler

public void setLobHandler(LobHandler lobHandler)

Override the LobHandler that is used to create and unpack large objects in SQL queries. The default is fine for almost all platforms, but some Oracle drivers require a native implementation.

Parameters:

lobHandler - a LobHandler

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Check mandatory properties (data source and incrementer).

Throws:

Exception

removeMessage

public Message<?> removeMessage(UUID id)

Description copied from interface: MessageStore

Remove the Message with the given id from the MessageStore, if present, and return it. If no Message with that id is present in the store, this will return null.

Specified by:

removeMessage in interface MessageStore

getMessage

public Message<?> getMessage(UUID id)

Description copied from interface: MessageStore

Return the Message with the given id, or null if no Message with that id exists in the MessageStore.

Specified by:

getMessage in interface MessageStore

addMessage

public <T> Message<T> addMessage(Message<T> message)

Description copied from interface: MessageStore

Put the provided Message into the MessageStore. The store may need to mutate the message internally, and if it does then the return value can be different than the input. The id of the return value will be used as an index so that the MessageStore.getMessage(UUID) and MessageStore.removeMessage(UUID) behave properly. Since messages are immutable, putting the same message more than once is a no-op.

Specified by:

addMessage in interface MessageStore

Returns:

the message that was stored

addMessageToGroup

public MessageGroup addMessageToGroup(Object groupId,
                                      Message<?> message)

Description copied from interface: MessageGroupStore

Store a message with an association to a group id. This can be used to group messages together.

Specified by:

addMessageToGroup in interface MessageGroupStore

Parameters:

groupId - the group id to store the message under

message - a message

getMessageGroup

public MessageGroup getMessageGroup(Object groupId)

Description copied from interface: MessageGroupStore

Return all Messages currently in the MessageStore that were stored using MessageGroupStore.addMessageToGroup(Object, Message) with this group id.

Specified by:

getMessageGroup in interface MessageGroupStore

Returns:

a group of messages, empty if none exists for this key

markMessageGroup

public MessageGroup markMessageGroup(MessageGroup group)

Description copied from interface: MessageGroupStore

Persist the mark on all the messages from the group. The group is modified in the process as all its unmarked messages become marked.

Specified by:

markMessageGroup in interface MessageGroupStore

Parameters:

group - a MessageGroup with no unmarked messages

removeMessageFromGroup

public MessageGroup removeMessageFromGroup(Object groupId,
                                           Message<?> messageToMark)

Description copied from interface: MessageGroupStore

Persist a mark on a single message from the group. The group is modified to reflect that 'messageToMark' is no longer unmarked but became marked instead.

Specified by:

removeMessageFromGroup in interface MessageGroupStore

Parameters:

groupId - the groupId for the group containing the message

messageToMark - the message to be marked

removeMessageGroup

public void removeMessageGroup(Object groupId)

Description copied from interface: MessageGroupStore

Remove the message group with this id.

Specified by:

removeMessageGroup in interface MessageGroupStore

Parameters:

groupId - the id of the group to remove

iterator

public Iterator<MessageGroup> iterator()

Specified by:

iterator in interface Iterable<MessageGroup>

Specified by:

iterator in class AbstractMessageGroupStore