I am getting this error in my source code:
java.lang.NoSuchMethodError: org.apache.hadoop.hbase.HColumnDescriptor.setMaxVersions(I)V
when I upgraded from hbase-0.92.1-cdh4.1.1 to hbase-0.94.2-cdh4.2.0
I see that the signature of the method is changed from
public void setMaxVersions(int maxVersions)
to
public HColumnDescriptor setMaxVersions(int maxVersions)
I am guessing there is binary compatibility is lost. Could someone shed some light on how this can be resolved? Thanks.
You can use Java Reflection to do this:
HColumnDescriptor fam1 = new HColumnDescriptor(Bytes.toBytes('cf'));
Method method = fam1.getClass().getMethod("setMaxVersions", Integer.TYPE);
method.invoke(fam1, 10);
Related
Given:
public class MyClass
{
public MyClass(ApplicationDbContext db)
{
var query = db.Query<IdentityUser>();
}
}
Using ASP.NET Core 2.1, I am getting this exception on the db.Query<IdentityUser>() call:
System.InvalidCastException: 'Unable to cast object of type 'Microsoft.EntityFrameworkCore.Internal.InternalDbSet\`1[Microsoft.AspNetCore.Identity.IdentityUser]' to type 'Microsoft.EntityFrameworkCore.DbQuery\`1[Microsoft.AspNetCore.Identity.IdentityUser]'.'
I ran into this with my own entities and reproduced it with minimal code using the canned ApplicationDbContext/IdentityUser. Is this a bug in .NET Core 2.1 or am I doing something incorrectly?
This is the source code from github for DbContext.Query<T>():
public virtual DbQuery<TQuery> Query<TQuery>()
where TQuery : class
=> (DbQuery<TQuery>)((IDbQueryCache)this)
.GetOrAddQuery(DbContextDependencies.QuerySource, typeof(TQuery));
It appears to be throwing the exception casting ((IDbQueryCache)this).GetOrAddQuery(DbContextDependencies.QuerySource, typeof(TQuery)) to (DbQuery<TQuery>)
I've opened an issue on github since this seems to be a bug from what I can tell.
Comment on my github issued had the solution:
You cannot call Query<> method for EntityTypes. You must use Set<>
method.
It might be helpful for TQuery to be more constrained than just class if that is possible.
I am trying to write a parameterized test case in JUnit. My code looks like this:
#RunWith(Parameterized.class)
#PrepareForTest({AR9DirectDebitFileWriterCustomization.class})
public class AR9DirectDebitFileWriterCustomizationTest2 extends AR3BasicUnitTest {
private DirectDebitExtractDetRec mockObj;
private ARApplicationContext mockAppCon;
private AR9DirectDebitFileWriterCustomization spyObj = null;
AccountDBViewData mockdbData;
AccountDBView mockdbView;
SearchInvoicesDBViewData[] mocksearchInvdbviewdatarr = new SearchInvoicesDBViewData[1];
#Before
public void setUp() throws Exception {
AR9DirectDebitFileWriterCustomization ar9Obj = new AR9DirectDebitFileWriterCustomization(mockdbView, mocksearchInvdbviewdatarr, mockdbData);
spyObj = PowerMockito.spy(ar9Obj);
}
public AR9DirectDebitFileWriterCustomizationTest2(DirectDebitExtractDetRec mockObj_from_collection, ARApplicationContext mockAppCon_from_collection) {
this.mockObj = mockObj_from_collection;
this.mockAppCon = mockAppCon_from_collection;
}
#Parameterized.Parameters
public static Collection<Object[]> getparameters() throws ACMException{
return Arrays.asList(new Object[][]{
{mock(DirectDebitExtractDetRec.class),mock(ARApplicationContext.class)}
});
}
#Test
#Parameters
public final void testAddFileRecordCustObjectARApplicationContext( ) throws Exception {
.....SOME CODE
}
Whenever I right click on the testAddFileRecordCustObjectARApplicationContext function and run it as Junit test I get an initialization error :
java.lang.Exception: No tests found matching Method
testAddFileRecordCustObjectARApplicationContext(amdocs.ar.customizationexits.handlers.helpers.AR9DirectDebitFileWriterCustomizationTest2)
from org.junit.internal.requests.ClassRequest#3fa50b at
org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:37)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.(JUnit4TestReference.java:33)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestMethodReference.(JUnit4TestMethodReference.java:25)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:54)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
After looking for several hours on internet about this issue I could not find anything meaningful. In this scenario I am using spy and powerMocktio Functionality as well.I am not sure what is the root of this error .
And interesting thing is when I run it without using Parameterised test ,it works perfectly fine.
I had very similar error:
No tests found matching data with any parameter from...
According to my observations, it is caused by another strange error:
Unable to mock class ... due to a missing dependency
Only the first I see when I run the test, and the second, when I debug it. According to https://stackoverflow.com/a/23788935/715269,
https://stackoverflow.com/a/25659518/715269, it is the bug connected to classpath reading. The problem disappears, when we upgrade JMockit to higher versions.
I am trying to assgin a value to a variable in script component using C# but unable to do so. Can anyone please post the code or tell me what wrong below.
public override void PostExecute()
base.PostExecute();
IDTSVariables100 varCollection = null;
this.VariableDispenser.LockForWrite("User::Variable");
this.VariableDispenser.GetVariables(out varCollection);
varCollection["User::Variable"].Value = #"TESTING";
MessageBox.Show(Variables.MerchOrgName.ToString());
This example is very comprehensive. Most of the time the easier of the two methods is sufficient - especially if you are just starting.
http://microsoft-ssis.blogspot.com/2011/01/how-to-use-variables-in-script.html
I post this question and I got some explanations but I couldn't solve the problem. Now since event I have a better understanding I'm going to post this again in a new angle.
I have following lines in my node.
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
/*
* Associate the schema factory with the resource resolver, which is
* responsible for resolving the imported XSD's
*/
factory.setResourceResolver(new ResourceResolver());
Source schemaFile = new StreamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
Schema schema = factory.newSchema(schemaFile);
Validator validator = schema.newValidator();
validator.validate(new DOMSource(document));
I think I have two options. Either to mock
Source schemaFile = new StreamSource(getClass().getClassLoader().getResourceAsStream(schemaName));
or
Schema schema = factory.newSchema(schemaFile);
I have been pulling my hair for two day to do the first one. I tried as follows
expectNew(StreamSource.class, InputStream.class).andReturn(mockSource);
and
expectNew(StreamSource.class, anyObject(InputStream.class)).andReturn(mockSource);
But didn't work.
Now I'm trying to mock the second line
Schema schema = factory.newSchema(schemaFile);
This one also not quite clear to me. Do I need to mock a factory like
SchemaFactory mockFactory = EasyMock.createMock(SchemaFactory.class);
or since factory is created using newInstance static method call is it a different way?
Appreciate any help on this problem.
Adding later
I got some lead with the situation. I have expectNew as follows.
expectNew(StreamSource.class, InputStream.class).andReturn(mockStreamSource);
When I run powermocks throws a error saying.
java.lang.AssertionError:
Unexpected constructor call javax.xml.transform.stream.StreamSource(null):
javax.xml.transform.stream.StreamSource(class java.io.InputStream): expected: 1, actual: 0
The reason is as I think getClass().getClassLoader().getResourceStream("..") return null anyway. So powermock didn't find it euqal to the initialization I describe by expectNew. How to say expect a null inputstream as parameter. I tried using just null. didn't work.
expectNew(StreamSource.class, null).andReturn(mockStreamSource);
If you're using easymock:
Extract the creation of the factory to a protected method.
protected SchemaFactory createSchemaFactory(){
return SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
}
In your test, instead of test the SUT itself create a partially mocked version of your SUT, mocking only the new method where the static invocation is done, and test it. Partial mocks using easymock.
When I register the following in SM and then attempt to create an instance I get the exception - 'StructureMap Exception Code: 202 No Default Instance defined for PluginFamily...'
Scan(x =>
{
x.Assembly("MVCDemo");
x.Assembly("MVCDemo.Infrastructure");
x.Assembly("MVCDemo.Services");
x.AddAllTypesOf(typeof (IRepository<>));
});
ForRequestedType<IRepository<Employee>>().TheDefault.Is.ConstructedBy(() => new EmployeeRepository());
var tmp4 = ObjectFactory.GetInstance<IRepository<Employee>>();
The exception occurs when I try and get an instance of IRepository.
Does anyone know what I'm missing?
Cheers
Ollie
The answer is I shouldn't use ObjectFactory to create instance, I should use the container:
var container = new Container(new MvcDemoRegistry());
var cultureProvider = container.GetInstance<IProvideCultureInfo>();
Ta
Ollie
You aren't supposed to use containers to get instances when using an IoC and DI. You should be using constructor injection and have the IoC handle the injection for you.