Undefined header results in Nullpointer when expression is evaluated
--------------------------------------------------------------------
Key: CAMEL-3433
URL: https://issues.apache.org/jira/browse/CAMEL-3433
Project: Camel
Issue Type: Bug
Components: camel-core
Affects Versions: 2.5.0
Reporter: Thomas Jung
If you define a filter for a header that is not defined like
from("p:a").filter(header("header").in("value")).to("p:b");
it results in a NullPointerException:
{code}
2010-12-15 10:07:45,920 [main ] ERROR DefaultErrorHandler
- Failed delivery for exchangeId: 0215-1237-1292404064936-0-2. Exhausted after
delivery attempt: 1 caught: java.lang.NullPointerException
java.lang.NullPointerException
at
org.apache.camel.builder.ExpressionBuilder$40.evaluate(ExpressionBuilder.java:955)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.ExpressionAdapter.evaluate(ExpressionAdapter.java:36)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.builder.BinaryPredicateSupport.matches(BinaryPredicateSupport.java:54)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.builder.PredicateBuilder$5.matches(PredicateBuilder.java:127)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.FilterProcessor.process(FilterProcessor.java:46)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:68)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:99)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:299)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:208)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:263)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:99)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:68)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:91)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:85)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
CamelBug$ComponentImplementation$1$2.start(CamelBug.java:60)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/test-classes/:]
at
org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.startServices(DefaultCamelContext.java:1529)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRouteConsumers(DefaultCamelContext.java:1795)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.doStartRouteConsumers(DefaultCamelContext.java:1748)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.safelyStartRouteServices(DefaultCamelContext.java:1674)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRoutes(DefaultCamelContext.java:1464)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:1356)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:1257)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:65)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:52)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
at
org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:1235)[file:/C:/Development/workspaces/camelcode/camel/camel-core/target/classes/:]
{code}
This test reproduces the problem:
{code}
public void testExpressionForUndefinedHeader(){
Expression type = ExpressionBuilder.headerExpression("header");
Expression expression = ExpressionBuilder.constantExpression("value");
Expression convertToExpression =
ExpressionBuilder.convertToExpression(expression, type);
convertToExpression.evaluate(exchange, Object.class);
}
{code}
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