Storing lists of boxed primitives/Strings?

Question

Is there any way to store lists of boxed primitives and Strings in RushORM? Something like ArrayList<String> or ArrayList<Integer>? I know I can wrap the int/String in an object that extends RushObject but I'm hoping I don't have to resort to this.

I've already attempted: @RushList(classType = String.class) but it will not compile as the class type must extend RushObject.

Answer 1

What you want to do is implement your own custom column type for those boxed primitives.

The only thing you will have to do is switch them to a Array String[] or int[] as you wont be able to get type using ArrayList. Here is a int[] custom column.

public class IntArrayColumn implements RushColumn<int[]> {

    private static final String DELIMITER = ",";

    @Override
    public String sqlColumnType() {
        return "varchar(255)";
    }

    @Override
    public String serialize(int[] ints, RushStringSanitizer rushStringSanitizer) {
        return rushStringSanitizer.sanitize(join(ints));
    }

    @Override
    public int[] deserialize(String s) {
        return split(s);
    }

    @Override
    public Class[] classesColumnSupports() {
        return new Class[]{int[].class};
    }

    private String join(int[] ints) {
        if (ints.length > 0) {
            StringBuilder sbuild = new StringBuilder();
            for (int i = 0; i < ints.length; i++) {
                sbuild.append(ints[i]).append(DELIMITER);
            }
            sbuild.delete(sbuild.lastIndexOf(DELIMITER), sbuild.length());
            return sbuild.toString();
        } else {
            return "";
        }
    }

    private int[] split(String source) {
        if (source != null) {
            if (source.isEmpty()) {
                return new int[0];
            }
            String[] items = source.split(DELIMITER);
            int[] ints = new int[items.length];
            for (int i = 0; i < ints.length; i++) {
                ints[i] = Integer.valueOf(items[i]);
            }
            return ints;
        }
        return null;
    }
}

Then change the initialize function to look like this.

AndroidInitializeConfig config = new AndroidInitializeConfig(getApplicationContext());
config.addRushColumn(new IntArrayColumn());
RushCore.initialize(config);

The only downfall is you wont be able to query anything is the list.

Hope that helps.