org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class

Development
1

I am upgrading a module to depend on 1.11.6 and it is not able to load annotated beans. I have read that a possible cause is java 8 and I have downgraded to java 7 in vain. The code however compiles well with version 1.9.9. The snipped below shows the code that runs into error which can be found at https://pastebin.com/wV4814fa. I will appreciate any help.

public synchronized void refresh() {
		calculationClasses.clear();
		flagCalculationClasses.clear();

		ClassPathScanningCandidateComponentProvider scanner = new ClassPathScanningCandidateComponentProvider(false);
		scanner.addIncludeFilter(new AssignableTypeFilter(PatientCalculation.class));

		for (BeanDefinition bd : scanner.findCandidateComponents("org.openmrs.module")) {
			try {
				Class<? extends PatientCalculation> clazz = (Class<? extends PatientCalculation>) Context.loadClass(bd.getBeanClassName());
				calculationClasses.put(bd.getBeanClassName(), clazz);

				if (PatientFlagCalculation.class.isAssignableFrom(clazz)) {
					flagCalculationClasses.add((Class<? extends PatientFlagCalculation>) clazz);
				}

			} catch (ClassNotFoundException e) {
				e.printStackTrace();
			}

			log.debug("Registered calculation class " + bd.getBeanClassName());
		}
	}

@dkayiwa @darius @k.joseph @wyclif

2

What does java -version give you?

3

I run java 7.

java version “1.7.0_95” OpenJDK Runtime Environment (IcedTea 2.6.4) (7u95-2.6.4-3) OpenJDK 64-Bit Server VM (build 24.95-b01, mixed mode)

4

I am noting something very interesting. Even though my java version is 1.7, the module is kind of compiled using oracle java 8. Compiling the module with -X switch produces the following:

[DEBUG] properties used {uiframeworkVersion=3.3.1, env.DESKTOP_SESSION=ubuntu, env.OLDPWD=/home/antony/workspace/KenyaEMR/Kenya_EMR/kenyacore, file.encoding.pkg=sun.io, java.home=/usr/lib/jvm/java-8-oracle/jre, env.QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1, env.GDM_LANG=en_US, env.DISPLAY=:0,

I am still looking at it and will share once I get a solution

Finding: I needed to change javac version as well when I switched between java versions. The compiler still pointed to java 8 even though java version was 7. Switching the compiler version sorted me.

THanks

5

Would be great if you sent the finding as a reply because edits do not send notifications.

Explaining how you switched the compiler version will also help those who may not know how.

6

The solution to the problem was to change javac version as well when I switched between java versions. The compiler still pointed to java 8 even though java version was 7. Switching the compiler version sorted me.

To update javac use:

`sudo update-alternatives --config javac`

and specify the version of interest, in my case java 7. I hope this helps.

1 Like
7

Hi @dkayiwa

It seems I’m encountering an error similar to the one reported in this thread. At-least I know that this error is related to the Java compiler version but failed to figure out how to get over it.

Like I reported in Patient Conditions and Encounters, we need this feature in HFE.

So I created a new sub module(api-2.3) and this depends on core 2.3.1-SNAPSHOT. I’m aware that java 8 support is available when you depend on core 2.x and above,

Adding the compiler plugin pointing to 1.8 source to api-2.3 makes spring fail to build the context in the omod sub module:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId>
  <version>3.8.1</version>
  <configuration>
    <source>1.8</source>
    <target>1.8</target>
  </configuration>
</plugin>

Error:

Caused by: org.springframework.beans.factory.BeanDefinitionStoreException:
  Failed to read candidate component class: file [~/openmrs-module-htmlformentry/api-2.3/target/classes/org/openmrs/module/htmlformentry/ConditionElement.class];
  nested exception is java.lang.ArrayIndexOutOfBoundsException: 32364

Here is the full error log: https://pastebin.com/N0Yuamf0

NB: Here is the commit that has changes you want to look at - https://github.com/samuelmale/openmrs-module-htmlformentry/commit/edf722fe4f77fe6c65e8354e5f5e5ca2212ad953

It’s true that if I forget about using Java 8 compatible code, the error is gone

cc: @mksd, @ibacher