Special Checks

1 Introduction

This documents describes special checks in expressions, such as checking whether an object is empty, new, is synced.

2 Checking for an Empty Object

Checks if an object is empty.

2.1 Input Parameters

The input parameters are described in the table below:

2.2 Output

The output is described in the table below:

2.3 Example

If you use the following input:

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$object1 = empty

The output will be False assuming $object1 is a domain entity and that currently exists.

The output will be True if the object does not currently exist (which is possible if you try to retrieve a non-existent object).

The same holds for when $object1 is a variable (such as Integer, String, etc).

3 Checking for an Empty Object Member

3.1 Input Parameters

The input parameters are described in the table below:

3.2. Output

The output is described in the table below:

3.3 Examples

For example, you have the following input:

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$object1/member1 = empty

Assuming $object1 is a domain entity that has a member called ‘member1’, the table below shows the output:

4 Checking Whether an Object Is New

Checks whether an object is new.

4.1 Input Parameters

The input parameters are described in the table below:

4.2 Output

The output is described in the table below:

4.3 Example

An example of an input can be the following:

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isNew($object1)

5 Checking Whether an Object Is Synced

This function is available only in expressions for conditional visibility or editability and nanoflows, as they are only evaluated on client side.

5.1 Input Parameters

The input parameters are described in the table below:

5.2 Output

The output is described in the table below:

5.3 Example

An example of an input can be the following:

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isSynced($currentObject)