Apache Solr Reference Guide Covering Apache Solr 6.0

The entity attributes unique to the MailEntityProcessor are shown below.
Attribute
processor
user
password
host
protocol
fetchMailsSince
folders
recurse
include
exclude
processAttachement
Use
Required. Must be set to "MailEntityProcessor".
Required. Username for authenticating to the IMAP server; this is typically the email
address of the mailbox owner.
Required. Password for authenticating to the IMAP server.
Required. The IMAP server to connect to.
Required. The IMAP protocol to use, valid values are: imap, imaps, gimap, and gimaps.
Optional. Date/time used to set a filter to import messages that occur after the specified
date; expected format is: yyyy-MM-dd HH:mm:ss.
Required. Comma-delimited list of folder names to pull messages from, such as
"inbox".
Optional (default is true). Flag to indicate if the processor should recurse all child
folders when looking for messages to import.
Optional. Comma-delimited list of folder patterns to include when processing folders
(can be a literal value or regular expression).
Optional. Comma-delimited list of folder patterns to exclude when processing folders
(can be a literal value or regular expression); excluded folder patterns take precedence
over include folder patterns.
Optional (default is true). Use Tika to process message attachments.
or
processAttachments
includeContent
Optional (default is true). Include the message body when constructing Solr documents
for indexing.
Importing New Emails Only
After running a full import, the MailEntityProcessor keeps track of the timestamp of the previous import so that
subsequent imports can use the fetchMailsSince filter to only pull new messages from the mail server. This
occurs automatically using the Data Import Handler dataimport.properties file (stored in conf). For instance, if you
set fetchMailsSince=2014-08-22 00:00:00 in your mail-data-config.xml, then all mail messages that occur after
this date will be imported on the first run of the importer. Subsequent imports will use the date of the previous
import as the fetchMailsSince filter, so that only new emails since the last import are indexed each time.
GMail Extensions
When connecting to a GMail account, you can improve the efficiency of the MailEntityProcessor by setting the
protocol to gimap or gimaps. This allows the processor to send the fetchMailsSince filter to the GMail server to
have the date filter applied on the server, which means the processor only receives new messages from the
server. However, GMail only supports date granularity, so the server-side filter may return previously seen
messages if run more than once a day.
The TikaEntityProcessor
Apache Solr Reference Guide 6.0
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