[rules-users] Invalid signature file

[J Michael Dean]

I have created a plugin to contain the core Drools jars and  
dependencies, and this plugin is then used by my RCP.  This works, a  
couple rules fire correctly, etc.  Now I want to set up a testing  
framework (JUnit4) and have the following code, which causes an  
Invalid signature file error.  My core plugin was created in Eclipse  
simply by wrapping the Drools jars and dependencies, and as I said,  
the RCP itself works.  Any assistance is greatly appreciated.

- Mike

	@BeforeClass
	public static void setUp() throws Exception {
		Reader source;
		final PackageBuilder builder = new PackageBuilder();
		boolean exists = (new File("rules/GlucoseDroolRules00.drl")).exists();
		if (exists) {
			builder.addPackageFromDrl(new FileReader(
					"rules/GlucoseDroolRules00.drl"));
		} else {
			System.out.println("Cannot locate the file - will try as resource");
			source = new InputStreamReader(AllDroolsRulesTests.class
					.getResourceAsStream("rules/GlucoseDroolRules00.drl"));

			builder.addPackageFromDrl(source);
		}
		if (builder.hasErrors()) {
			System.out.println(builder.getErrors().toString());
		}
		Package pkg = builder.getPackage();
		ruleBase = RuleBaseFactory.newRuleBase();
		ruleBase.addPackage(pkg);
	}

The code dies in the line instantiating the PackageBuilder builder:

java.lang.SecurityException: Invalid signature file digest for  
Manifest main attributes
	at  
sun 
.security 
.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:221)
	at  
sun 
.security 
.util.SignatureFileVerifier.process(SignatureFileVerifier.java:176)
	at java.util.jar.JarVerifier.processEntry(JarVerifier.java:233)
	at java.util.jar.JarVerifier.update(JarVerifier.java:188)
	at java.util.jar.JarFile.initializeVerifier(JarFile.java:325)
	at java.util.jar.JarFile.getInputStream(JarFile.java:390)
	at  
sun 
.net 
.www 
.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:136)
	at java.net.URL.openStream(URL.java:1007)
	at  
org 
.drools.util.ChainedProperties.loadProperties(ChainedProperties.java: 
245)
	at  
org 
.drools.util.ChainedProperties.loadProperties(ChainedProperties.java: 
216)
	at org.drools.util.ChainedProperties.<init>(ChainedProperties.java:123)
	at org.drools.util.ChainedProperties.<init>(ChainedProperties.java:31)
	at  
org 
.drools 
.compiler 
.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:108)
	at  
org 
.drools 
.compiler 
.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:94)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:124)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:86)
	at  
droolsRules.tests.AllDroolsRulesTests.setUp(AllDroolsRulesTests.java:37)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at  
sun 
.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 
39)
	at  
sun 
.reflect 
.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 
25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at  
org 
.junit 
.internal 
.runners.BeforeAndAfterRunner.invokeMethod(BeforeAndAfterRunner.java:74)
	at  
org 
.junit 
.internal 
.runners.BeforeAndAfterRunner.runBefores(BeforeAndAfterRunner.java:50)
	at  
org 
.junit 
.internal 
.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:33)
	at  
org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
	at  
org 
.eclipse 
.jdt 
.internal 
.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
	at  
org 
.eclipse 
.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at  
org 
.eclipse 
.jdt 
.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java: 
460)
	at  
org 
.eclipse 
.jdt 
.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java: 
673)
	at  
org 
.eclipse 
.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java: 
386)
	at  
org 
.eclipse 
.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java: 
196)

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