Sharing cached resources between java classes

Question

I have three classes, testContainer.java, recurringTest.java and databaseHelper.java

testContainer class runs only once and stays alive while recurringTest runs again and again.

public class testContainerA extends someExternalClass {
    public void initialize() {
        databaseHelper.getResoucefromDB(A)
        runTestContinuously(new recurringTestA());
    }
}

public class recurringTestA {
    // some load tests that accesses resourceMap.get(A)

}

public class testContainerB extends someExternalClass {
    public void initialize() {
        databaseHelper.getResoucefromDB(B)
        runTestContinuously(new recurringTestB());
    }
}

public class recurringTestB {
    // some different load tests that accesses resourceMap.get(B)
}

public class databaseHelper{
    public static HashMap<String, List<resource>> resourceMap;
    public void getResoucefromDB(String resourceType) {
        resourceList.put(resourceType, callDatabase(resourceType));
    }
}

Requirements:

1. recurringTest constructor cannot have any parameters.
2. cannot use any files to save the resource list.
3. recurringTestA and recurringTestB are set up such that they run simultaenously

I tried saving the resources in a file and it works. I do not want to use any file though. How do I cache/save the resources so that it can be accessed inside the test without calling the database more than once? How do I save resources in resourceList so that the recurring tests can access it without having to call DB again and again.

Answer 1

可能这将是一个糟糕的答案，但您可以尝试为此使用静态变量。