Spring Integration

org.springframework.integration.jdbc
Class JdbcMessageStore

java.lang.Object
  extended by org.springframework.integration.store.AbstractMessageGroupStore
      extended by 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 setDeserializer(org.springframework.commons.serializer.InputStreamingConverter<? super Message<?>> deserializer)
          A converter for deserializing byte arrays to messages.
 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 setSerializer(org.springframework.commons.serializer.OutputStreamingConverter<? super Message<?>> serializer)
          A converter for serializing messages to byte arrays for storage.
 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

setSerializer

public void setSerializer(org.springframework.commons.serializer.OutputStreamingConverter<? super Message<?>> serializer)
A converter for serializing messages to byte arrays for storage.

Parameters:
serializer - the serializer to set

setDeserializer

public void setDeserializer(org.springframework.commons.serializer.InputStreamingConverter<? super Message<?>> deserializer)
A converter for deserializing byte arrays to messages.

Parameters:
deserializer - the deserializer to set

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

Spring Integration

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