Thank you James, it’s working now ☺ -Kumiko
From: James Wing [mailto:jvw...@gmail.com] Sent: Tuesday, May 24, 2016 4:04 PM To: users@nifi.apache.org Subject: Re: Read the custom attributes Expression language support must be configured in the PropertyDescriptor for all properties, including dynamic properties. Your processor should override getSupportedDynamicPropertyDescriptor() to provide dynamic properties. Take a look at the UpdateAttribute processor for an example: @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(); } https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-update-attribute-bundle/nifi-update-attribute-processor/src/main/java/org/apache/nifi/processors/attributes/UpdateAttribute.java#L194 On Tue, May 24, 2016 at 3:43 PM, Kumiko Yada <kumiko.y...@ds-iq.com<mailto:kumiko.y...@ds-iq.com>> wrote: Hello, When the Nifi expression language is used in the custom processor property, it’s working. However, I’m not able get from expression language for the custom attributes. How can I enable to read the custom attributes? Thanks Kumiko
