camel-jpa-kafka-connector source configuration

When using camel-jpa-kafka-connector as source make sure to use the following Maven dependency to have support for the connector:

<dependency>
  <groupId>org.apache.camel.kafkaconnector</groupId>
  <artifactId>camel-jpa-kafka-connector</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel Kafka connector version -->
</dependency>

To use this Source connector in Kafka connect you’ll need to set the following connector.class

connector.class=org.apache.camel.kafkaconnector.jpa.CamelJpaSourceConnector

The camel-jpa source connector supports 46 options, which are listed below.

Name Description Default Priority

camel.source.path.entityType

Entity class name

null

HIGH

camel.source.endpoint.joinTransaction

The camel-jpa component will join transaction by default. You can use this option to turn this off, for example if you use LOCAL_RESOURCE and join transaction doesn’t work with your JPA provider. This option can also be set globally on the JpaComponent, instead of having to set it on all endpoints.

true

MEDIUM

camel.source.endpoint.maximumResults

Set the maximum number of results to retrieve on the Query.

-1

MEDIUM

camel.source.endpoint.namedQuery

To use a named query.

null

MEDIUM

camel.source.endpoint.nativeQuery

To use a custom native query. You may want to use the option resultClass also when using native queries.

null

MEDIUM

camel.source.endpoint.persistenceUnit

The JPA persistence unit used by default.

"camel"

HIGH

camel.source.endpoint.query

To use a custom query.

null

MEDIUM

camel.source.endpoint.resultClass

Defines the type of the returned payload (we will call entityManager.createNativeQuery(nativeQuery, resultClass) instead of entityManager.createNativeQuery(nativeQuery)). Without this option, we will return an object array. Only has an affect when using in conjunction with native query when consuming data.

null

MEDIUM

camel.source.endpoint.bridgeErrorHandler

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

false

MEDIUM

camel.source.endpoint.consumeDelete

If true, the entity is deleted after it is consumed; if false, the entity is not deleted.

true

MEDIUM

camel.source.endpoint.consumeLockEntity

Specifies whether or not to set an exclusive lock on each entity bean while processing the results from polling.

true

MEDIUM

camel.source.endpoint.deleteHandler

To use a custom DeleteHandler to delete the row after the consumer is done processing the exchange

null

MEDIUM

camel.source.endpoint.lockModeType

To configure the lock mode on the consumer. One of: [READ] [WRITE] [OPTIMISTIC] [OPTIMISTIC_FORCE_INCREMENT] [PESSIMISTIC_READ] [PESSIMISTIC_WRITE] [PESSIMISTIC_FORCE_INCREMENT] [NONE]

"PESSIMISTIC_WRITE"

MEDIUM

camel.source.endpoint.maxMessagesPerPoll

An integer value to define the maximum number of messages to gather per poll. By default, no maximum is set. Can be used to avoid polling many thousands of messages when starting up the server. Set a value of 0 or negative to disable.

null

MEDIUM

camel.source.endpoint.preDeleteHandler

To use a custom Pre-DeleteHandler to delete the row after the consumer has read the entity.

null

MEDIUM

camel.source.endpoint.sendEmptyMessageWhenIdle

If the polling consumer did not poll any files, you can enable this option to send an empty message (no body) instead.

false

MEDIUM

camel.source.endpoint.skipLockedEntity

To configure whether to use NOWAIT on lock and silently skip the entity.

false

MEDIUM

camel.source.endpoint.transacted

Whether to run the consumer in transacted mode, by which all messages will either commit or rollback, when the entire batch has been processed. The default behavior (false) is to commit all the previously successfully processed messages, and only rollback the last failed message.

false

MEDIUM

camel.source.endpoint.exceptionHandler

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.

null

MEDIUM

camel.source.endpoint.exchangePattern

Sets the exchange pattern when the consumer creates an exchange. One of: [InOnly] [InOut] [InOptionalOut]

null

MEDIUM

camel.source.endpoint.parameters

This key/value mapping is used for building the query parameters. It is expected to be of the generic type java.util.Map where the keys are the named parameters of a given JPA query and the values are their corresponding effective values you want to select for. When it’s used for producer, Simple expression can be used as a parameter value. It allows you to retrieve parameter values from the message body, header and etc.

null

MEDIUM

camel.source.endpoint.pollStrategy

A pluggable org.apache.camel.PollingConsumerPollingStrategy allowing you to provide your custom implementation to control error handling usually occurred during the poll operation before an Exchange have been created and being routed in Camel.

null

MEDIUM

camel.source.endpoint.basicPropertyBinding

Whether the endpoint should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities

false

MEDIUM

camel.source.endpoint.entityManagerProperties

Additional properties for the entity manager to use.

null

MEDIUM

camel.source.endpoint.sharedEntityManager

Whether to use Spring’s SharedEntityManager for the consumer/producer. Note in most cases joinTransaction should be set to false as this is not an EXTENDED EntityManager.

false

MEDIUM

camel.source.endpoint.synchronous

Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported).

false

MEDIUM

camel.source.endpoint.backoffErrorThreshold

The number of subsequent error polls (failed due some error) that should happen before the backoffMultipler should kick-in.

null

MEDIUM

camel.source.endpoint.backoffIdleThreshold

The number of subsequent idle polls that should happen before the backoffMultipler should kick-in.

null

MEDIUM

camel.source.endpoint.backoffMultiplier

To let the scheduled polling consumer backoff if there has been a number of subsequent idles/errors in a row. The multiplier is then the number of polls that will be skipped before the next actual attempt is happening again. When this option is in use then backoffIdleThreshold and/or backoffErrorThreshold must also be configured.

null

MEDIUM

camel.source.endpoint.delay

Milliseconds before the next poll.

500L

MEDIUM

camel.source.endpoint.greedy

If greedy is enabled, then the ScheduledPollConsumer will run immediately again, if the previous run polled 1 or more messages.

false

MEDIUM

camel.source.endpoint.initialDelay

Milliseconds before the first poll starts.

1000L

MEDIUM

camel.source.endpoint.repeatCount

Specifies a maximum limit of number of fires. So if you set it to 1, the scheduler will only fire once. If you set it to 5, it will only fire five times. A value of zero or negative means fire forever.

0L

MEDIUM

camel.source.endpoint.runLoggingLevel

The consumer logs a start/complete log line when it polls. This option allows you to configure the logging level for that. One of: [TRACE] [DEBUG] [INFO] [WARN] [ERROR] [OFF]

"TRACE"

MEDIUM

camel.source.endpoint.scheduledExecutorService

Allows for configuring a custom/shared thread pool to use for the consumer. By default each consumer has its own single threaded thread pool.

null

MEDIUM

camel.source.endpoint.scheduler

To use a cron scheduler from either camel-spring or camel-quartz component. Use value spring or quartz for built in scheduler

"none"

MEDIUM

camel.source.endpoint.schedulerProperties

To configure additional properties when using a custom scheduler or any of the Quartz, Spring based scheduler.

null

MEDIUM

camel.source.endpoint.startScheduler

Whether the scheduler should be auto started.

true

MEDIUM

camel.source.endpoint.timeUnit

Time unit for initialDelay and delay options. One of: [NANOSECONDS] [MICROSECONDS] [MILLISECONDS] [SECONDS] [MINUTES] [HOURS] [DAYS]

"MILLISECONDS"

MEDIUM

camel.source.endpoint.useFixedDelay

Controls if fixed delay or fixed rate is used. See ScheduledExecutorService in JDK for details.

true

MEDIUM

camel.component.jpa.entityManagerFactory

To use the EntityManagerFactory. This is strongly recommended to configure.

null

MEDIUM

camel.component.jpa.joinTransaction

The camel-jpa component will join transaction by default. You can use this option to turn this off, for example if you use LOCAL_RESOURCE and join transaction doesn’t work with your JPA provider. This option can also be set globally on the JpaComponent, instead of having to set it on all endpoints.

true

MEDIUM

camel.component.jpa.sharedEntityManager

Whether to use Spring’s SharedEntityManager for the consumer/producer. Note in most cases joinTransaction should be set to false as this is not an EXTENDED EntityManager.

false

MEDIUM

camel.component.jpa.transactionManager

To use the PlatformTransactionManager for managing transactions.

null

MEDIUM

camel.component.jpa.bridgeErrorHandler

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

false

MEDIUM

camel.component.jpa.basicPropertyBinding

Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities

false

MEDIUM

The camel-jpa sink connector has no converters out of the box.

The camel-jpa sink connector has no transforms out of the box.

The camel-jpa sink connector has no aggregation strategies out of the box.