Apple

Thanks Chuck.

Miguel Torres.

On 21/08/2012, at 16:29, Chuck Hill <email@hidden> wrote:

On 2012-08-21, at 1:59 PM, WebObjects TORAcom wrote:

Thanks Chuck and Jesse.

I think I understand the term lazy synchronization and it makes totally sense.

But, how to handle a case like this:

Three entities and their relationships:

User <-----> Address
Client <-----> Address

I create a reusable component named EditAddress and use it inside two other components: EditUser and EditClient. I would pass the Address object via a binding.

In the EditAddress I would use WOTextFields connected to the address' parameters: address.country, address.state, etc.

How could I do that with lazy synchronization?

The same way. Just put this in EditAddress:

private Address address;

public void awake() {
super.awake();
address = null;
}

public Address exampleValue() {
if (address == null) {
address = (Address) valueForBinding("address");
}
return address;
}

public void setAddress(Address newValue) {
if (ERXExtensions.saveDifferent(address(), newValue) {
setValueForBinding(newValue, "address");
address = newValue;
}
}

Then use WOTextFields connected to address.country, address.state, etc.

Chuck

On 21/08/2012, at 14:22, Chuck Hill <email@hidden> wrote:

Hi Miguel,

On 2012-08-21, at 11:19 AM, WebObjects TORAcom wrote:

Hi List,

I am trying to implement best practices in our applications, we want to take control of component's binding syncrhonization.

First of all I understand that we should override the synchronizesVariablesWithBindings function like this:

public boolean synchronizesVariablesWithBindings() {
return false;
}

But where in the request - response loop should be the better place to synchronize our bindings, a lot of time ago (years) somewhere in the internet I found info that recommends Pull binding's values in the takeValuesFromRequest(WORequest r, WOContext c) method and Push binding's values in the appendToResponse(WOResponse r, WOContext c).

I am not sure about that, so we have been working with the automatic synchronization of our bindings.

I usually do lazy synchronization, and only do what I need. Something like this:

private String exampleValue;

public void awake() {
super.awake();
exampleValue = null;
}

public String exampleValue() {
if (exampleValue == null) {
exampleValue = stringValueForBinding("exampleValue");
}
return exampleValue;
}

public void setExampleValue(String newValue) {
if (ERXExtensions.saveDifferent(exampleValue, newValue) {
setValueForBinding(newValue, "exampleValue");
exampleValue = newValue;
}
}

Chuck

--
Chuck Hill             Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/gvc/practical_webobjects

--
Chuck Hill             Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/gvc/practical_webobjects

References:
	>synchronizesVariablesWithBindings() (From: WebObjects TORAcom <email@hidden>)
	>Re: synchronizesVariablesWithBindings() (From: Chuck Hill <email@hidden>)
	>Re: synchronizesVariablesWithBindings() (From: WebObjects TORAcom <email@hidden>)
	>Re: synchronizesVariablesWithBindings() (From: Chuck Hill <email@hidden>)