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How to access an object's public fields from a Velocity template

Here is my object class:

public class Address
{
    public final String line1;
    public final String town;
    public final String postcode;

    public Address(final String line1, final String town, final String postcode)
    {
        this.line1 = line1;
        this.town = town;
        this.postcode = postcode;
    }
}

I add it to the velocity context like this:

Address theAddress = new Address("123 Fake St", "Springfield", "SP123");
context.put("TheAddress", theAddress);

However, when writing the template, the following will not render the address fields (however, it works fine when I add getters to the Address class)

<Address>
    <Line1>${TheAddress.line1}</Line1>
    <Town>${TheAddress.town}</Town>
    <Postcode>${TheAddress.postcode}</Postcode>
</Address>

Is it possible to access public fields on objects from Velocity without adding getters?

like image 221
Alex Spurling Avatar asked Jun 12 '13 14:06

Alex Spurling


2 Answers

Not by default. You need to configure a different Uberspect implementation.

like image 84
Nathan Bubna Avatar answered Oct 29 '22 03:10

Nathan Bubna


The Velocity user guide suggests it's not possible. Quote:

[Velocity] tries out different alternatives based on several established naming conventions. The exact lookup sequence depends on whether or not the property name starts with an upper-case letter. For lower-case names, such as $customer.address, the sequence is

  1. getaddress()
  2. getAddress()
  3. get("address")
  4. isAddress()

For upper-case property names like $customer.Address, it is slightly different:

  1. getAddress()
  2. getaddress()
  3. get("Address")
  4. isAddress()
like image 21
wau Avatar answered Oct 29 '22 03:10

wau