THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Spring
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Neo4j
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Component
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Available
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as
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of
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Camel
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Extra
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2.11
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The
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camel-spring-neo4j
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library
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is
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provided
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by
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the
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project
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which
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hosts
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*GPL
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related
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components
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for
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Camel.
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The
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neo4j:
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component
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allows
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you
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to
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treat
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Neo4j
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as
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a
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camel
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producer
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endpoint.
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This
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means
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you
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can
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use
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this
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component
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in
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to()
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calls
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but
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not
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from()
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calls.
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This
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component
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is
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backed
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by
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the
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- As a producer, can create or remove nodes, and create or remove relationships.
- Can support as many endpoints as required, eg for multiple databases across multiple instances.
- Headers set for node id (for created nodes), relationship id (for created relationships)
Maven users will need to add the following dependency to their pom.xml for this component:
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|http://www.springsource.org/spring-data/neo4j].
* As a producer, can create or remove nodes, and create or remove relationships.
* Can support as many endpoints as required, eg for multiple databases across multiple instances.
* Headers set for node id (for created nodes), relationship id (for created relationships)
Maven users will need to add the following dependency to their {{pom.xml}} for this component:
{code:xml}
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-spring-neo4j</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>
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URI format
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{code} h3. URI format {code} spring-neo4j:http://hostname[:port]/database?options {code} |
Where
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the
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URL
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is
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the
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location
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of
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the
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of
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running
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neo4j
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rest
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server.
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Headers
The following headers are set on exchanges during message transport.
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The producer will set the headers for downstream processors once the operation has taken place. Any ID headers set prior to the producer are ignored.
Operations
The neo4j component looks for the Neo4jOperation header to determine what kind of entity to create, which is one of the following enum types
`CREATE_NODE, REMOVE_NODE, CREATE_RELATIONSHIP, REMOVE_RELATIONSHIP`
The body of the message is used to determine the node or relationship to manipulate. The following body types are supported:
For CREATE_NODE:
- null body - create default node
- Map body - create node with the properties set from the map
For REMOVE_NODE:
- Long or Integer - remove node using the body as the id
- neo4j Node instance - remove the node specified by that instance
For CREATE_RELATIONSHIP:
- SpringDataRelationship - create relationship specified by any @NodeEntity annoted Spring entities.
- org.apache.camel.component.neo4j.BasicRelationship
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- -
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- create
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- relationship
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- specified
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- by
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- the
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- neo4j
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- node
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- types
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For
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REMOVE_RELATIONSHIP:
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- Long
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- or
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- Integer
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- -
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- remove
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- relationship
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- using
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- the
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- body
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- as
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- the
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- id
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- SpringDataRelationship
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- -
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- remove
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- relationship
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- specified
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- by
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- the
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- @NodeEntity
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- annoted
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- Spring
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- entities.
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- org.apache.camel.component.neo4j.BasicRelationship
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- -
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- remove
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- relationship
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- specified
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- by
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- the
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- neo4j
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- node
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- types
Samples
If you wanted to insert a new empty node every 1 seconds
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h3. Samples If you wanted to insert a new empty node every 1 seconds {code} from("timer://foo?period=1000").to("spring-neo4j:http://localhost:7474/data") {code} |
If
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you
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wanted
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to
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delete
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a
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specific
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node
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specified
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by
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a
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filename,
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eg
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a
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file
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of
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100
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would
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delete
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node
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100.
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} from("file:/var/data").process(new Processor() { @Override public void process(Exchange exchange) throws Exception { exchange.getIn().setBody(exchange.getIn().getHeader("CamelFileName")); } }).to("spring-neo4j:http://localhost:7474/data") {code} |