form:checkboxes not displaying properly yet saving properly

[aurir_]

I have a simple Role class which has a List<Authority>

@Entity
@Table(name="role")
public class Role implements RoleInterface {
	
	(...)
	private List<Authority> authorities;
	
	(...)
	
	@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
	@JoinTable(name = "role_x_authority", joinColumns = { @JoinColumn(name = "role_id") }, inverseJoinColumns = { @JoinColumn(name = "authority_id") })
	public List<Authority> getAuthorities() {
		return authorities;
	}
	
	public void setAuthorities(List<Authority> authorities) {
		this.authorities = authorities;
	}

Then I have a JSP which allows me to edit roles and their properties:

<form:form method="post" modelAttribute="role">
<form:errors path="*" cssClass="error" />
<table>
  <tr>
    <td>${role.id } - Role Id</td>
    <td><form:input disabled="true" path="id" /></td>
  </tr>
  <tr>
    <td>Role Name</td>
    <td><form:input path="name" /></td>
    <td><form:errors path="name" cssClass="error" /></td>
  </tr>
  <tr>
    <td>Role Desc</td>
    <td><form:input path="description" /></td>
    <td><form:errors path="description" cssClass="error" /></td>
  </tr>
  <tr>
    <td>Authorities</td>
    <td><form:checkboxes items="${authorityList}"  path="authorities" itemLabel="name" itemValue="id" delimiter="<br/>" /></td>
    <td><form:errors path="authorities" cssClass="error" /></td>
  </tr>
  <tr>
  	<td>&nbsp;</td>
  	<td><input type="submit" value="Save Role" /></td>
  	<td>&nbsp;</td>
  </tr>
</table>
</form:form>

${authorityList} above is a full list of all available authorities. I want the ones that are already attached to the Role object to be checked. However, nothing is checked. Saving works properly.

I have the following PropertyEditor

public class RoleAuthoritiesEditor extends PropertyEditorSupport {
	
	(...)
	
	@Override
	public String getAsText(){
		Authority authority = (Authority) this.getValue();
		String textVal = authority.getId().toString();
		return textVal;
	}

	@Override
	public void setAsText(String text) throws IllegalArgumentException {
		Long authorityId = Long.parseLong(text);
		Authority auth = _userMgmtService.getAuthorityById(authorityId);
		setValue(auth);
	}
}

What am I missing here?

[aurir_]

After some debugging I noticed that one of Spring's classes used by this tag attempts to compare using Authority's equals method. I overrode Authority.equals and hashCode methods, and the checkboxes are displayed properly now.

While it works, I was under the impression that a custom PropertyEditorSupport class should be sufficient. Anyone can comment on it?