Exception in org.apache.camel.util.PackageHelper
Help: I am getting an exception in org.apache.camel.util.PackageHelper (below). I believe I am using org.springframework.jms, version = 2.5.6.SEC01, which should converted to 2.5601
Questions:
Why am I getting this exception?
Is there a way to fix it?
Side bar:
I think:
LOG.debug("Failed to find out " + packageName + " version: " + e, e);
should be:
LOG.debug("Failed to find out " + packageName + " version: " + value, e);
Exception:
2010-12-02 15:43:13,927 [Thread-0] DEBUG - Failed to find out org.springframework.jms version: java.lang.NumberFormatException: empty String java.lang.NumberFormatException: empty String at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:994) at java.lang.Double.parseDouble(Double.java:510) at org.apache.camel.util.PackageHelper.isValidVersion(PackageHelper.java:63) at org.apache.camel.component.jms.JmsConfiguration.defaultCacheLevel(JmsConfiguration.java:1150) at org.apache.camel.component.jms.JmsConfiguration.configureMessageListenerContainer(JmsConfiguration.java:1052) at org.apache.camel.component.jms.JmsConfiguration.createMessageListenerContainer(JmsConfiguration.java:512) at org.apache.camel.component.jms.JmsEndpoint.createConsumer(JmsEndpoint.java:135) at org.apache.camel.component.jms.JmsEndpoint.createConsumer(JmsEndpoint.java:55) at org.apache.camel.impl.EventDrivenConsumerRoute.addServices(EventDrivenConsumerRoute.java:60) at org.apache.camel.impl.DefaultRoute.onStartingServices(DefaultRoute.java:83) at org.apache.camel.impl.RouteService.doStart(RouteService.java:123) at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:53) at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:957) at org.apache.camel.spring.SpringCamelContext.maybeStart(SpringCamelContext.java:197) at org.apache.camel.spring.SpringCamelContext.onApplicationEvent(SpringCamelContext.java:101) at org.apache.camel.spring.CamelContextFactoryBean.onApplicationEvent(CamelContextFactoryBean.java:593) at org.springframework.context.event.SimpleApplicationEventMulticaster$1.run(SimpleApplicationEventMulticaster.java:78) at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:49) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:76) at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:274) at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:736) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:383) at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:140) at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:84)
PackageHelper:
/**
* 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.util;
import org.apache.commons.logging.Log;Class search for 'org.apache.commons.logging.Log'
import org.apache.commons.logging.LogFactory;Class search for 'org.apache.commons.logging.LogFactory'
/**
* Some helper methods for working with Java packages and versioning.
*
* @version $Revision: 767824 $
*/
public final class PackageHelper {
private static final transient Log LOG = LogFactory.getLog(PackageHelper.class);
private PackageHelper() {
// Utility Class
}
/**
* Returns true if the version number of the given package name can be found and is greater than or equal to the minimum version.
*
* For package names which include multiple dots, the dots are removed. So for example a spring version of 2.5.1 is converted to
* 2.51 so you can assert that its >= 2.51 (so above 2.50 and less than 2.52 etc).
*
* @param packageName the Java package name to compare
* @param minimumVersion the minimum version number
* @return true if the package name can be determined and if its greater than or equal to the minimum value
*/
public static boolean isValidVersion(String packageName, double minimumVersion) {
try {
Package spring = Package.getPackage(packageName);
if (spring != null) {
String value = spring.getImplementationVersion();
if (value != null) {
// lets remove any extra dots in the string...
int idx = value.indexOf('.');
if (idx >= 0) {
StringBuffer buffer = new StringBuffer(value.substring(0, ++idx));
int i = idx;
for (int size = value.length(); i < size; i++) {
char ch = value.charAt(i);
if (Character.isDigit(ch)) {
buffer.append(ch);
}
}
value = buffer.toString();
}
double number = Double.parseDouble(value);
return number >= minimumVersion;
}
}
} catch (Exception e) {
LOG.debug("Failed to find out " + packageName + " version: " + e, e);
}
return true;
}
}
