[NXP-29700] Fix NPE in BlobsExtractor#findBlobsProperties - Nuxeo Issue Tracker

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 10.10
Fix Version/s: 10.10-HF34, 11.4, 2021.0
Component/s: Core

Tags:
- SupCom
- noRNS
- nxplatform
Backlog priority:
750
Sprint:
nxplatform #19, nxplatform #20
Story Points:
1

Description

In a case where blobs are added to a multivalued complex property, a NPE is thrown by BlobsExtractor#findBlobsProperties

Steps to reproduce

Deploy the attached jar to nxserver/plugins
Start Nuxeo and switch to the JSF view
Go to a Workspace
Click on the New button and choose the type VeryComplex
For the "instances" field, add 2 values
Fill all the fields but "Val Test" which should remain empty
Click on the Create button

Observe that there is a NPE in the logs when MimetypeIconUpdater tries to read all the blobs.

2020-09-23T18:37:14,498 ERROR [EventServiceImpl] Exception during mimetypeIconUpdater sync listener execution, continuing to run other listeners
java.lang.NullPointerException: null
	at org.nuxeo.ecm.core.utils.BlobsExtractor.findBlobsProperties(BlobsExtractor.java:182) ~[nuxeo-core-api-10.10-HF31.jar:?]
	at org.nuxeo.ecm.core.utils.BlobsExtractor.findBlobsProperties(BlobsExtractor.java:189) ~[nuxeo-core-api-10.10-HF31.jar:?]
	at org.nuxeo.ecm.core.utils.BlobsExtractor.getBlobsProperties(BlobsExtractor.java:154) ~[nuxeo-core-api-10.10-HF31.jar:?]
	at org.nuxeo.ecm.platform.filemanager.core.listener.MimetypeIconUpdater.handleEvent(MimetypeIconUpdater.java:93) ~[nuxeo-platform-filemanager-core-listener-10.10-HF31.jar:?]

Note that in other circumstances, it's also possible to crash the ZIP export.

Expected behavior: there is no exception where this document type is created.