org.apache.camel.processor.idempotent.jdbc

Class AbstractJdbcMessageIdRepository

java.lang.Object

org.apache.camel.support.service.ServiceSupport

org.apache.camel.processor.idempotent.jdbc.AbstractJdbcMessageIdRepository

All Implemented Interfaces:

org.apache.camel.Service, org.apache.camel.ShutdownableService, org.apache.camel.spi.IdempotentRepository, org.apache.camel.StatefulService, org.apache.camel.SuspendableService

Direct Known Subclasses:

JdbcMessageIdRepository

@ManagedResource(description="JDBC IdempotentRepository")
public abstract class AbstractJdbcMessageIdRepository
extends org.apache.camel.support.service.ServiceSupport
implements org.apache.camel.spi.IdempotentRepository

Base class for JDBC-based idempotent repositories that allows the schema to be changed.

Subclasses need only implement theses methods:

• queryForInt(String key)
• insert(String key)
• delete(String key)

These methods should perform the named database operation.

Important: Implementations of this should use String as the generic type as that is what is required by Camel to allow using the idempotent repository with the Idempotent Consumer EIP and also as file consumer read-lock. It was a mistake to make IdempotentRepository parameterized, as it should have been a pre-configured to use a String type.

Field Summary

Fields

Modifier and Type	Field and Description
protected DataSource	dataSource
protected org.springframework.jdbc.core.JdbcTemplate	jdbcTemplate
protected org.slf4j.Logger	log
protected String	processorName
protected org.springframework.transaction.support.TransactionTemplate	transactionTemplate

Fields inherited from class org.apache.camel.support.service.ServiceSupport

FAILED, INITIALIZED, lock, NEW, SHUTDOWN, SHUTTINGDOWN, STARTED, STARTING, status, STOPPED, STOPPING, SUSPENDED, SUSPENDING

Constructor Summary

Constructors

Constructor and Description
AbstractJdbcMessageIdRepository()
AbstractJdbcMessageIdRepository(DataSource dataSource, String processorName)
AbstractJdbcMessageIdRepository(DataSource dataSource, org.springframework.transaction.support.TransactionTemplate transactionTemplate, String processorName)
AbstractJdbcMessageIdRepository(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate, org.springframework.transaction.support.TransactionTemplate transactionTemplate)

Method Summary

Modifier and Type	Method and Description
boolean	add(String key)
void	clear()
boolean	confirm(String key)
boolean	contains(String key)
protected static org.springframework.transaction.support.TransactionTemplate	createTransactionTemplate(DataSource dataSource) Creates the transaction template
protected abstract int	delete() Operations that deletes all the rows
protected abstract int	delete(String key) Operations that deletes the key if it exists
protected void	doStart()
protected void	doStop()
DataSource	getDataSource()
org.springframework.jdbc.core.JdbcTemplate	getJdbcTemplate()
String	getProcessorName()
org.springframework.transaction.support.TransactionTemplate	getTransactionTemplate()
protected abstract int	insert(String key) Operation that inserts the key if it does not already exist
protected abstract int	queryForInt(String key) Operation that returns the number of rows, if any, for the specified key
boolean	remove(String key)
void	setDataSource(DataSource dataSource)
void	setJdbcTemplate(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate)
void	setProcessorName(String processorName)
void	setTransactionTemplate(org.springframework.transaction.support.TransactionTemplate transactionTemplate)

Methods inherited from class org.apache.camel.support.service.ServiceSupport

doInit, doResume, doShutdown, doSuspend, getStatus, init, isInit, isNew, isRunAllowed, isShutdown, isStarted, isStarting, isStartingOrStarted, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, isSuspendingOrSuspended, resume, shutdown, start, stop, suspend

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.camel.spi.IdempotentRepository

add, confirm, contains, remove

Methods inherited from interface org.apache.camel.Service

init, start, stop

Field Detail

jdbcTemplate

protected org.springframework.jdbc.core.JdbcTemplate jdbcTemplate

processorName

protected String processorName

transactionTemplate

protected org.springframework.transaction.support.TransactionTemplate transactionTemplate

dataSource

protected DataSource dataSource

log

protected org.slf4j.Logger log

Constructor Detail

AbstractJdbcMessageIdRepository

public AbstractJdbcMessageIdRepository()

AbstractJdbcMessageIdRepository

public AbstractJdbcMessageIdRepository(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate,
                                       org.springframework.transaction.support.TransactionTemplate transactionTemplate)

AbstractJdbcMessageIdRepository

public AbstractJdbcMessageIdRepository(DataSource dataSource,
                                       org.springframework.transaction.support.TransactionTemplate transactionTemplate,
                                       String processorName)

AbstractJdbcMessageIdRepository

public AbstractJdbcMessageIdRepository(DataSource dataSource,
                                       String processorName)

Method Detail

queryForInt

protected abstract int queryForInt(String key)

Operation that returns the number of rows, if any, for the specified key

Parameters:

key - the key

Returns:

int number of rows

insert

protected abstract int insert(String key)

Operation that inserts the key if it does not already exist

Parameters:

key - the key

Returns:

int number of rows inserted

delete

protected abstract int delete(String key)

Operations that deletes the key if it exists

Parameters:

key - the key

Returns:

int number of rows deleted

delete

protected abstract int delete()

Operations that deletes all the rows

Returns:

int number of rows deleted

createTransactionTemplate

protected static org.springframework.transaction.support.TransactionTemplate createTransactionTemplate(DataSource dataSource)

Creates the transaction template

doStart

protected void doStart()
                throws Exception

Specified by:

doStart in class org.apache.camel.support.service.ServiceSupport

Throws:

Exception

doStop

protected void doStop()
               throws Exception

Specified by:

doStop in class org.apache.camel.support.service.ServiceSupport

Throws:

Exception

add

@ManagedOperation(description="Adds the key to the store")
public boolean add(String key)

Specified by:

add in interface org.apache.camel.spi.IdempotentRepository

contains

@ManagedOperation(description="Does the store contain the given key")
public boolean contains(String key)

Specified by:

contains in interface org.apache.camel.spi.IdempotentRepository

remove

@ManagedOperation(description="Remove the key from the store")
public boolean remove(String key)

Specified by:

remove in interface org.apache.camel.spi.IdempotentRepository

clear

@ManagedOperation(description="Clear the store")
public void clear()

Specified by:

clear in interface org.apache.camel.spi.IdempotentRepository

confirm

public boolean confirm(String key)

Specified by:

confirm in interface org.apache.camel.spi.IdempotentRepository

getJdbcTemplate

public org.springframework.jdbc.core.JdbcTemplate getJdbcTemplate()

setJdbcTemplate

public void setJdbcTemplate(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate)

getProcessorName

public String getProcessorName()

setProcessorName

public void setProcessorName(String processorName)

getTransactionTemplate

public org.springframework.transaction.support.TransactionTemplate getTransactionTemplate()

setTransactionTemplate

public void setTransactionTemplate(org.springframework.transaction.support.TransactionTemplate transactionTemplate)

getDataSource

public DataSource getDataSource()

setDataSource

public void setDataSource(DataSource dataSource)