Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/319#discussion_r59995999
--- Diff:
nifi-nar-bundles/nifi-update-attribute-bundle/nifi-update-attribute-processor/src/main/java/org/apache/nifi/processors/attributes/UpdateAttribute.java
---
@@ -187,24 +167,83 @@ public UpdateAttribute() {
protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
List<PropertyDescriptor> descriptors = new ArrayList<>();
descriptors.add(DELETE_ATTRIBUTES);
+ descriptors.add(STORE_STATE);
+ descriptors.add(STATEFUL_VARIABLES_INIT_VALUE);
return Collections.unmodifiableList(descriptors);
}
@Override
protected PropertyDescriptor
getSupportedDynamicPropertyDescriptor(final String propertyDescriptorName) {
- return new PropertyDescriptor.Builder()
- .name(propertyDescriptorName)
- .required(false)
-
.addValidator(StandardValidators.createAttributeExpressionLanguageValidator(AttributeExpression.ResultType.STRING,
true))
-
.addValidator(StandardValidators.ATTRIBUTE_KEY_PROPERTY_NAME_VALIDATOR)
- .expressionLanguageSupported(true)
- .dynamic(true)
- .build();
+ if(!stateful){
+ return new PropertyDescriptor.Builder()
+ .name(propertyDescriptorName)
+ .required(false)
+
.addValidator(StandardValidators.ATTRIBUTE_KEY_PROPERTY_NAME_VALIDATOR)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .expressionLanguageSupported(true)
+ .dynamic(true)
+ .build();
+ } else {
+ return new PropertyDescriptor.Builder()
+ .name(propertyDescriptorName)
+ .required(false)
+
.addValidator(StandardValidators.createAttributeExpressionLanguageValidator(AttributeExpression.ResultType.STRING,
true))
+
.addValidator(StandardValidators.ATTRIBUTE_KEY_PROPERTY_NAME_VALIDATOR)
+ .expressionLanguageSupported(true)
+ .dynamic(true)
+ .build();
+ }
--- End diff --
Joe, instead of repeating the entire definition of the descriptor, have you
considered a base builder and then finish descriptor based on condition. For
example
```
Builder somePropBuilder = new PropertyDescriptor.Builder()
.name(propertyDescriptorName)
.required(false)
.addValidator(StandardValidators.ATTRIBUTE_KEY_PROPERTY_NAME_VALIDATOR)
.expressionLanguageSupported(true)
.dynamic(true);
if(!stateful){
return somePropBuilder
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
.build();
} else {
return somePropBuilder
.addValidator(StandardValidators.createAttributeExpressionLanguageValidator(AttributeExpression.ResultType.STRING,
true))
.build();
}
```
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