Author: davsclaus
Date: Sat May 21 14:43:38 2011
New Revision: 1125717
URL: http://svn.apache.org/viewvc?rev=1125717&view=rev
Log:
CAMEL-4002: Added ref langauge, to make it easy to refer and use custom
expressions in XML DSL. And as well from Java DSL.
Added:
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/RefLanguage.java
(contents, props changed)
- copied, changed from r1125230,
camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/ConstantLanguage.java
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/package.html
- copied, changed from r1125230,
camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/package.html
camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/RefExpression.java
- copied, changed from r1125230,
camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/ConstantExpression.java
camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/ref
- copied, changed from r1125230,
camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/constant
camel/trunk/camel-core/src/test/java/org/apache/camel/language/RefTest.java
- copied, changed from r1125230,
camel/trunk/camel-core/src/test/java/org/apache/camel/language/ConstantTest.java
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitCustomExpressionTest.java
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitRefCustomExpressionTest.java
camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringSplitCustomExpressionTest.java
- copied, changed from r1125230,
camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringAOPAfterTest.java
camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/SplitCustomExpressionTest.xml
- copied, changed from r1125230,
camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/aopafter.xml
Modified:
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClause.java
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClauseSupport.java
camel/trunk/camel-core/src/main/resources/org/apache/camel/model/language/jaxb.index
Modified:
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClause.java
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClause.java?rev=1125717&r1=1125716&r2=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClause.java
(original)
+++
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClause.java
Sat May 21 14:43:38 2011
@@ -324,9 +324,20 @@ public class ExpressionClause<T> extends
}
/**
- * Evaluates a <a href="http://camel.apache.org/ruby.html";>Ruby
+ * Evaluates a <a href="http://camel.apache.org/ref-language.html";>Ref
* expression</a>
*
+ * @param ref refers to the expression to be evaluated
+ * @return the builder to continue processing the DSL
+ */
+ public T ref(String ref) {
+ return delegate.ref(ref);
+ }
+
+ /**
+ * Evaluates a <a href="http://camel.apache.org/ruby.html";>Ruby
+ * expression</a>
+ *
* @param text the expression to be evaluated
* @return the builder to continue processing the DSL
*/
Modified:
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClauseSupport.java
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClauseSupport.java?rev=1125717&r1=1125716&r2=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClauseSupport.java
(original)
+++
camel/trunk/camel-core/src/main/java/org/apache/camel/builder/ExpressionClauseSupport.java
Sat May 21 14:43:38 2011
@@ -34,6 +34,7 @@ import org.apache.camel.model.language.O
import org.apache.camel.model.language.PhpExpression;
import org.apache.camel.model.language.PropertyExpression;
import org.apache.camel.model.language.PythonExpression;
+import org.apache.camel.model.language.RefExpression;
import org.apache.camel.model.language.RubyExpression;
import org.apache.camel.model.language.SimpleExpression;
import org.apache.camel.model.language.SpELExpression;
@@ -361,6 +362,17 @@ public class ExpressionClauseSupport<T>
}
/**
+ * Evaluates a {@link Expression} by looking up existing {@link Expression}
+ * from the {@link org.apache.camel.spi.Registry}
+ *
+ * @param ref refers to the expression to be evaluated
+ * @return the builder to continue processing the DSL
+ */
+ public T ref(String ref) {
+ return expression(new RefExpression(ref));
+ }
+
+ /**
* Evaluates a <a href="http://camel.apache.org/ruby.html";>Ruby
* expression</a>
*
Copied:
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/RefLanguage.java
(from r1125230,
camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/ConstantLanguage.java)
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/RefLanguage.java?p2=camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/RefLanguage.java&p1=camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/ConstantLanguage.java&r1=1125230&r2=1125717&rev=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/ConstantLanguage.java
(original)
+++
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/RefLanguage.java
Sat May 21 14:43:38 2011
@@ -14,30 +14,47 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package org.apache.camel.language.constant;
+package org.apache.camel.language.ref;
+import org.apache.camel.Exchange;
import org.apache.camel.Expression;
import org.apache.camel.IsSingleton;
import org.apache.camel.Predicate;
import org.apache.camel.builder.ExpressionBuilder;
import org.apache.camel.builder.PredicateBuilder;
+import org.apache.camel.impl.ExpressionAdapter;
import org.apache.camel.spi.Language;
/**
- * A language for constant expressions.
+ * A language for referred expressions.
*/
-public class ConstantLanguage implements Language, IsSingleton {
+public class RefLanguage implements Language, IsSingleton {
- public static Expression constant(Object value) {
- return ExpressionBuilder.constantExpression(value);
+ public static Expression ref(Object value) {
+ String ref = value.toString();
+ return ExpressionBuilder.refExpression(ref);
}
public Predicate createPredicate(String expression) {
return PredicateBuilder.toPredicate(createExpression(expression));
}
- public Expression createExpression(String expression) {
- return ConstantLanguage.constant(expression);
+ public Expression createExpression(final String expression) {
+ final Expression exp = RefLanguage.ref(expression);
+ return new ExpressionAdapter() {
+ public Object evaluate(Exchange exchange) {
+ Expression lookup = exp.evaluate(exchange, Expression.class);
+ if (lookup != null) {
+ return lookup.evaluate(exchange, Object.class);
+ } else {
+ throw new IllegalArgumentException("Cannot find expression
in registry with ref: " + expression);
+ }
+ }
+
+ public String toString() {
+ return exp.toString();
+ }
+ };
}
public boolean isSingleton() {
Propchange:
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/RefLanguage.java
------------------------------------------------------------------------------
svn:eol-style = native
Propchange:
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/RefLanguage.java
------------------------------------------------------------------------------
svn:keywords = Rev Date
Copied:
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/package.html
(from r1125230,
camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/package.html)
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/package.html?p2=camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/package.html&p1=camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/package.html&r1=1125230&r2=1125717&rev=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/main/java/org/apache/camel/language/constant/package.html
(original)
+++
camel/trunk/camel-core/src/main/java/org/apache/camel/language/ref/package.html
Sat May 21 14:43:38 2011
@@ -19,7 +19,7 @@
</head>
<body>
-Camel <a href="http://camel.apache.org/constant.html";>Constant</a> language.
+Camel <a href="http://camel.apache.org/ref-language.html";>Ref</a> language.
</body>
</html>
Copied:
camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/RefExpression.java
(from r1125230,
camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/ConstantExpression.java)
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/RefExpression.java?p2=camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/RefExpression.java&p1=camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/ConstantExpression.java&r1=1125230&r2=1125717&rev=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/ConstantExpression.java
(original)
+++
camel/trunk/camel-core/src/main/java/org/apache/camel/model/language/RefExpression.java
Sat May 21 14:43:38 2011
@@ -21,20 +21,23 @@ import javax.xml.bind.annotation.XmlAcce
import javax.xml.bind.annotation.XmlRootElement;
/**
- * For expressions and predicates using a constant
+ * For expressions and predicates using a reference to an existing
+ * {@link org.apache.camel.Expression} or {@link org.apache.camel.Predicate}
+ * to lookup from the {@link org.apache.camel.spi.Registry}.
*/
-@XmlRootElement(name = "constant")
+@XmlRootElement(name = "ref")
@XmlAccessorType(XmlAccessType.FIELD)
-public class ConstantExpression extends ExpressionDefinition {
+public class RefExpression extends ExpressionDefinition {
- public ConstantExpression() {
+ public RefExpression() {
}
- public ConstantExpression(String expression) {
- super(expression);
+ public RefExpression(String ref) {
+ super(ref);
}
public String getLanguage() {
- return "constant";
+ return "ref";
}
+
}
Copied:
camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/ref
(from r1125230,
camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/constant)
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/ref?p2=camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/ref&p1=camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/constant&r1=1125230&r2=1125717&rev=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/constant
(original)
+++
camel/trunk/camel-core/src/main/resources/META-INF/services/org/apache/camel/language/ref
Sat May 21 14:43:38 2011
@@ -15,4 +15,4 @@
# limitations under the License.
#
-class=org.apache.camel.language.constant.ConstantLanguage
+class=org.apache.camel.language.ref.RefLanguage
Modified:
camel/trunk/camel-core/src/main/resources/org/apache/camel/model/language/jaxb.index
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/resources/org/apache/camel/model/language/jaxb.index?rev=1125717&r1=1125716&r2=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/main/resources/org/apache/camel/model/language/jaxb.index
(original)
+++
camel/trunk/camel-core/src/main/resources/org/apache/camel/model/language/jaxb.index
Sat May 21 14:43:38 2011
@@ -28,6 +28,7 @@ OgnlExpression
PhpExpression
PropertyExpression
PythonExpression
+RefExpression
RubyExpression
SimpleExpression
SpELExpression
Copied:
camel/trunk/camel-core/src/test/java/org/apache/camel/language/RefTest.java
(from r1125230,
camel/trunk/camel-core/src/test/java/org/apache/camel/language/ConstantTest.java)
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/language/RefTest.java?p2=camel/trunk/camel-core/src/test/java/org/apache/camel/language/RefTest.java&p1=camel/trunk/camel-core/src/test/java/org/apache/camel/language/ConstantTest.java&r1=1125230&r2=1125717&rev=1125717&view=diff
==============================================================================
---
camel/trunk/camel-core/src/test/java/org/apache/camel/language/ConstantTest.java
(original)
+++ camel/trunk/camel-core/src/test/java/org/apache/camel/language/RefTest.java
Sat May 21 14:43:38 2011
@@ -16,21 +16,46 @@
*/
package org.apache.camel.language;
+import org.apache.camel.Exchange;
import org.apache.camel.LanguageTestSupport;
+import org.apache.camel.impl.ExpressionAdapter;
+import org.apache.camel.impl.JndiRegistry;
-public class ConstantTest extends LanguageTestSupport {
+public class RefTest extends LanguageTestSupport {
- public void testConstantExpressions() throws Exception {
- // We can put anything in here, the expression will
- // always evaluate to itself
- assertExpression("a value", "a value");
+ @Override
+ protected JndiRegistry createRegistry() throws Exception {
+ JndiRegistry jndi = super.createRegistry();
+ jndi.bind("myExp", new MyExpression());
+ return jndi;
+ }
+
+ public void testRefExpressions() throws Exception {
+ assertExpression("myExp", "Hello World");
}
+ public void testRefExpressionsNotFound() throws Exception {
+ try {
+ assertExpression("foo", "Hello World");
+ fail("Should have thrown exception");
+ } catch (IllegalArgumentException e) {
+ assertEquals("Cannot find expression in registry with ref: foo",
e.getMessage());
+ }
+ }
+
public void testPredicates() throws Exception {
- assertPredicate("another value");
+ assertPredicate("myExp");
}
protected String getLanguageName() {
- return "constant";
+ return "ref";
+ }
+
+ private class MyExpression extends ExpressionAdapter {
+
+ @Override
+ public Object evaluate(Exchange exchange) {
+ return "Hello World";
+ }
}
}
Added:
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitCustomExpressionTest.java
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitCustomExpressionTest.java?rev=1125717&view=auto
==============================================================================
---
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitCustomExpressionTest.java
(added)
+++
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitCustomExpressionTest.java
Sat May 21 14:43:38 2011
@@ -0,0 +1,69 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.processor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.Exchange;
+import org.apache.camel.Expression;
+import org.apache.camel.builder.RouteBuilder;
+
+/**
+ *
+ */
+public class SplitCustomExpressionTest extends ContextTestSupport {
+
+ public void testSplitCustomExpression() throws Exception {
+ getMockEndpoint("mock:split").expectedBodiesReceived("A", "B", "C");
+
+ template.sendBody("direct:start", "A,B,C");
+
+ assertMockEndpointsSatisfied();
+ }
+
+ @Override
+ protected RouteBuilder createRouteBuilder() throws Exception {
+ return new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:start")
+ .split(new MyCustomExpression())
+ .to("mock:split");
+ }
+ };
+ }
+
+ public static class MyCustomExpression implements Expression {
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public <T> T evaluate(Exchange exchange, Class<T> type) {
+ final String body = exchange.getIn().getBody(String.class);
+
+ // just split the body by comma
+ String[] parts = body.split(",");
+ List<String> list = new ArrayList<String>();
+ for (String part : parts) {
+ list.add(part);
+ }
+
+ return (T) list.iterator();
+ }
+ }
+}
Added:
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitRefCustomExpressionTest.java
URL:
http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitRefCustomExpressionTest.java?rev=1125717&view=auto
==============================================================================
---
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitRefCustomExpressionTest.java
(added)
+++
camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitRefCustomExpressionTest.java
Sat May 21 14:43:38 2011
@@ -0,0 +1,77 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.processor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.Exchange;
+import org.apache.camel.Expression;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.impl.JndiRegistry;
+
+/**
+ *
+ */
+public class SplitRefCustomExpressionTest extends ContextTestSupport {
+
+ @Override
+ protected JndiRegistry createRegistry() throws Exception {
+ JndiRegistry jndi = super.createRegistry();
+ jndi.bind("myCustomExpression", new MyCustomExpression());
+ return jndi;
+ }
+
+ public void testSplitCustomExpression() throws Exception {
+ getMockEndpoint("mock:split").expectedBodiesReceived("A", "B", "C");
+
+ template.sendBody("direct:start", "A,B,C");
+
+ assertMockEndpointsSatisfied();
+ }
+
+ @Override
+ protected RouteBuilder createRouteBuilder() throws Exception {
+ return new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:start")
+ .split().ref("myCustomExpression")
+ .to("mock:split");
+ }
+ };
+ }
+
+ public static class MyCustomExpression implements Expression {
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public <T> T evaluate(Exchange exchange, Class<T> type) {
+ final String body = exchange.getIn().getBody(String.class);
+
+ // just split the body by comma
+ String[] parts = body.split(",");
+ List<String> list = new ArrayList<String>();
+ for (String part : parts) {
+ list.add(part);
+ }
+
+ return (T) list.iterator();
+ }
+ }
+}
Copied:
camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringSplitCustomExpressionTest.java
(from r1125230,
camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringAOPAfterTest.java)
URL:
http://svn.apache.org/viewvc/camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringSplitCustomExpressionTest.java?p2=camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringSplitCustomExpressionTest.java&p1=camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringAOPAfterTest.java&r1=1125230&r2=1125717&rev=1125717&view=diff
==============================================================================
---
camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringAOPAfterTest.java
(original)
+++
camel/trunk/components/camel-spring/src/test/java/org/apache/camel/spring/processor/SpringSplitCustomExpressionTest.java
Sat May 21 14:43:38 2011
@@ -17,15 +17,16 @@
package org.apache.camel.spring.processor;
import org.apache.camel.CamelContext;
-import org.apache.camel.processor.AOPAfterTest;
+import org.apache.camel.processor.SplitCustomExpressionTest;
+
import static
org.apache.camel.spring.processor.SpringTestHelper.createSpringCamelContext;
/**
* @version
*/
-public class SpringAOPAfterTest extends AOPAfterTest {
+public class SpringSplitCustomExpressionTest extends SplitCustomExpressionTest
{
protected CamelContext createCamelContext() throws Exception {
- return createSpringCamelContext(this,
"org/apache/camel/spring/processor/aopafter.xml");
+ return createSpringCamelContext(this,
"org/apache/camel/spring/processor/SplitCustomExpressionTest.xml");
}
}
\ No newline at end of file
Copied:
camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/SplitCustomExpressionTest.xml
(from r1125230,
camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/aopafter.xml)
URL:
http://svn.apache.org/viewvc/camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/SplitCustomExpressionTest.xml?p2=camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/SplitCustomExpressionTest.xml&p1=camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/aopafter.xml&r1=1125230&r2=1125717&rev=1125717&view=diff
==============================================================================
---
camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/aopafter.xml
(original)
+++
camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/SplitCustomExpressionTest.xml
Sat May 21 14:43:38 2011
@@ -22,16 +22,21 @@
http://camel.apache.org/schema/spring
http://camel.apache.org/schema/spring/camel-spring.xsd
">
- <!-- START SNIPPET: e1 -->
- <camelContext xmlns="http://camel.apache.org/schema/spring";>
- <route>
- <from uri="direct:start"/>
- <aop afterUri="mock:after">
- <transform><constant>Bye World</constant></transform>
- <to uri="mock:result"/>
- </aop>
- </route>
- </camelContext>
- <!-- END SNIPPET: e1 -->
+ <!-- START SNIPPET: e1 -->
+
+ <!-- use a bean to define a custom expression -->
+ <bean id="myExpression"
class="org.apache.camel.processor.SplitCustomExpressionTest$MyCustomExpression"/>
+
+ <camelContext xmlns="http://camel.apache.org/schema/spring";>
+ <route>
+ <from uri="direct:start"/>
+ <split>
+ <!-- refer to our custom expression, using ref tag -->
+ <ref>myExpression</ref>
+ <to uri="mock:split"/>
+ </split>
+ </route>
+ </camelContext>
+ <!-- END SNIPPET: e1 -->
</beans>
