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Note
This is a draft document. It can be modified at any time by any committer. Comments on the draft should be made on the dev mailing list.

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Code Block

	xml
	xml

<set field="foo" value="bar" />
<set field="baz" from-field="foo" />

Attributes

Name	Type	Requirements	Description
field	expression	optional	The name of the field to set (the l-value)
from-field	expression	optional	The name of a field to copy from (the r-value)
value	constant+expr	optional	A constant value
default-value	constant, constant+expr, expression	optional	A default constant value - used if from-field evaluates to null
type	constant	optional	The Java data type of field	Defaults to "String"
set-if-null	constant	optional	Controls if field can be set to `null`.	Defaults to "false"
set-if-empty	constant	optional	Controls if field can be set to an empty value. The meaning of "empty" depends on the Java data type.	Defaults to "true"

Info

title	Proposed Changes

Currently, the field attribute is optional. Require the field attribute.
Currently, the from-field and value attributes are optional. Require one of the two attributes.
Add a new attribute: from-script. The attribute will be used exclusively for scriptlets that are currently found in other attributes.
Rename the from-field attribute to from. The attribute will be used exclusively for UEL expressions.
Change the behavior of the value attribute: The attribute will be used exclusively for string constants.
Rename the default-value attribute to default.
Remove the type attribute default.

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