CODEWITHSUNDEEP
javaintellij-ideaeclipse-collections
adaslaw
adaslaw

Reputation: 300

IntelliJ Java Type Renderers for Eclipse Collections with primitives

I have found Eclipse Collections very useful. Especially collections for primitive types (for example: IntObjectHashMap). Unfortunately there is a problem with rendering these collections in IntelliJ IDEA debugger.

Let's have a sample code:

import org.eclipse.collections.impl.map.mutable.primitive.IntObjectHashMap;
import java.util.HashMap;

public class Test {
    public static void main(String[] args) {
        IntObjectHashMap<String> eclipseMap = new IntObjectHashMap<>(4);
        eclipseMap.put(1, "one");
        eclipseMap.put(2, "two");

        HashMap<Integer, String> hashMap = new HashMap<>(4);
        hashMap.put(1, "one");
        hashMap.put(2, "two");

        System.out.println("" + eclipseMap);
        System.out.println("" + hashMap);
    }
}

Here we have a debugger variables view:

enter image description here

As we can see JDK HashMap is rendered perfectly, but IntObjectHashMap Eclipse Collection is not.

The situation is even worse when I drop down values for Eclipse Collection:

enter image description here

As we can see - there is no one element on the values list.

You can say: OK, as a workaround, you can use standard toString renderer available in IntelliJ:

enter image description here

Unfortunately in my case it is not the case since my collections have tens of millions of elements.

So my question is:

Anybody know a place / a project where I can find IntelliJ Java type renderers for Eclipse Collections for primitive types?

Upvotes: 2

Views: 382

Answers (2)

adaslaw
adaslaw

Reputation: 300

@Egor answer is almost perfect :) It works great, but for small collections only.

Let me describe the problem with @Egor solution. Let's have a look at the example:

import org.eclipse.collections.impl.map.mutable.primitive.IntObjectHashMap;

public class Test3 {
    public static void main(String[] args) {
        final int CAPACITY = 20_000_000;
        IntObjectHashMap<String> eclipseMap = new IntObjectHashMap<>();
        for (int i = 0; i < CAPACITY; i++) {
            eclipseMap.put(i, Integer.toString(i));
        }

        System.out.println("Hello world.");
    }
}

Now run it - everything is OK. Now put the breakpoint at line System.out.println("Hello world.") and execute this program in the debug mode.

We will be slapped by OutOfMemoryError (because IntelliJ calls toString method on this collection):

enter image description here

To solve this problem we need to set When rendering a node -> Use following expression - for example like this:

enter image description here

Upvotes: 3

Egor
Egor

Reputation: 2664

you can create a type renderer, for example like this: enter image description here

Upvotes: 4

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