`USE_BIG_DECIMAL_FOR_FLOATS` feature not working when using `JSON.treeFrom()`

[jvdsandt]

This test fails because the USE_BIG_DECIMAL_FOR_FLOATS feature is ignored and Double objects are stiill used.

@Test
public void testParseDecimals() throws Exception {

    JSON json = JSON.builder()
            .treeCodec(new JacksonJrsTreeCodec())
            .enable(JSON.Feature.USE_BIG_DECIMAL_FOR_FLOATS)
            .build();

    String input = "[1.1]";

    TreeNode node = json.treeFrom(input);
    TreeNode elemNode = node.get(0);

    assertTrue(elemNode instanceof JrsNumber);
    assertTrue(((JrsNumber) elemNode).getValue() instanceof BigDecimal);
}

[cowtowncoder]

Thank you for reporting this. I added a failing test to reproduce the problem.

Unfortunately JacksonJrsTreeCodec has no access to feature flags of JSON, so it cannot really determine this setting at this point. To solve the problem we'd probably have to do one of:

1. Figure out how to let codec access feature settings at time of registration (I am not sure it is quite possible to have fully dynamic link for new JSON instances)
2. Add separate setting(s) for codec to be configured to do coercion.

[cowtowncoder]

Fixed for 2.17.1.

NOTE: MUST register codec as extension like so:

        JSON json = JSON.builder()
                .enable(JSON.Feature.USE_BIG_DECIMAL_FOR_FLOATS)
                .register(new JrSimpleTreeExtension())
                .build();

for things to work; registering directly as TreeCodec will not work.