THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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JavaSpace
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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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2.1
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The
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javaspace
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component
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is
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a
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transport
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for
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working
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with
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any
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JavaSpace
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compliant
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implementation
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and
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this
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component
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has
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been
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tested
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with
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both
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the
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...
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and
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the
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.
This component can be used for sending and receiving any object inheriting from the Jini net.jini.core.entry.Entry
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class.
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It
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is
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also
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possible
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to
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pass
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the
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bean
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ID
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of
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a
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template
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that
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can
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be
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used
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for
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reading/taking
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the
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entries
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from
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the
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space.
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This
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component
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can
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be
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used
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for
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sending/receiving
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any
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serializable
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object
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acting
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as
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a
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sort
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of
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generic
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transport.
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The
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JavaSpace
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component
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contains
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a
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special
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optimization
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for
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dealing
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with
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the
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BeanExchange
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.
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It
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can
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be
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used
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to
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invoke
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a
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POJO
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remotely,
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using
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a
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JavaSpace
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as
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a
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transport.
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This
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latter
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feature
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can
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provide
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a
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simple
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implementation
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of
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the
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master/worker
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pattern,
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where
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a
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POJO
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provides
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the
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business
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logic
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for
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the
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worker.
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Look
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at
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the
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test
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cases
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for
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examples
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of
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various
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use
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cases
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for
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this
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component.
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Maven
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users
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will
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need
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to
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add
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the
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following
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dependency
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to
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their
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pom.xml
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for
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this
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component:
| Code Block | ||||
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{code:xml} <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-javaspace</artifactId> <version>x.x.x</version> <!-- use the same version as your Camel core version --> </dependency> {code} h3. URI format { |
URI format
| Code Block |
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code} javaspace:jini://host[?options] {code} |
You
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can
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append
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query
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options
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to
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the
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URI
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in
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the
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following
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format,
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?option=value&option=value&...
Options
| Wiki Markup |
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}} h3. Options {div:class=confluenceTableSmall} || Name || Default Value || Description || | {{spaceName}} | {{null}} | Specifies the JavaSpace name. | | {{verb}} | {{take}} | Specifies the verb for getting JavaSpace entries. The values can be: {{take}} or {{read}}. | | {{transactional}} | {{false}} | If {{true}}, sending and receiving entries is performed within a transaction. | | {{transactionalTimeout}} | {{Long.MAX_VALUE}} | Specifies the transaction timeout. | | {{concurrentConsumers}} | {{1}} | Specifies the number of concurrent consumers getting entries from the JavaSpace. | | {{templateId}} | {{null}} | If present, this option specifies the Spring bean ID of the template to use for reading/taking entries. | {div} h3. Examples h4. Sending and Receiving Entries {code} |
Examples
Sending and Receiving Entries
| Code Block |
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// sending route
from("direct:input")
.to("javaspace:jini://localhost?spaceName=mySpace");
// receiving Route
from("javaspace:jini://localhost?spaceName=mySpace&templateId=template&verb=take&concurrentConsumers=1")
.to("mock:foo");
{code}
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In
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this
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case
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the
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payload
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can
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be
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any
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object
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that
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inherits
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from
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the
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Jini
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Entry
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type.
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Sending
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and
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receiving
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serializable
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objects
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Using
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the
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preceding
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routes,
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it
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is
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also
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possible
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to
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send
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and
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receive
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any
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serializable
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object.
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The
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JavaSpace
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component
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detects
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that
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the
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payload
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is
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not
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a
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Jini
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Entry
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and
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then
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it
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automatically
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wraps
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the
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payload
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with
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a
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Camel
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Jini
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Entry
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.
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In
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this
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way,
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a
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JavaSpace
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can
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be
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used
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as
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a
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generic
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transport
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mechanism.
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Using
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JavaSpace
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as
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a
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remote
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invocation
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transport
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The
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JavaSpace
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component
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has
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been
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tailored
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to
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work
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in
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combination
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with
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the
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Camel
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bean
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component.
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It
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is
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therefore
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possible
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to
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call
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a
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remote
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POJO
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using
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JavaSpace
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as
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the
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transport:
| Code Block |
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} // client side from("direct:input") .to("javaspace:jini://localhost?spaceName=mySpace"); // server side from("javaspace:jini://localhost?concurrentConsumers=10&spaceName=mySpace") .to("mock:foo"); {code} |
In
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the
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code
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there
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are
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two
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test
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cases
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showing
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how
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to
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use
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a
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POJO
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to
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realize
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the
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master/worker
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pattern.
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The
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idea
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is
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to
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use
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the
...
POJO
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to
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provide
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the
...
business
...
logic
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and
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rely
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on
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Camel
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for
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sending/receiving
...
requests/replies
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with
...
the
...
proper
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correlation.
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