Re: Exporting a single email as JSON

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+Date: Sun, 11 Dec 2011 03:03:57 +0200\r
+Message-ID:\r
+ <CA+Tk8fy0xnRuPjuPc9Sz=om9AS9Gwa8fBe+VQjoetO-nJ+kqYg@mail.gmail.com>\r
+Subject: Re: Exporting a single email as JSON\r
+From: Ciprian Dorin Craciun <ciprian.craciun@gmail.com>\r
+To: Jameson Graef Rollins <jrollins@finestructure.net>\r
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+\r
+On Sun, Dec 11, 2011 at 01:19, Jameson Graef Rollins\r
+<jrollins@finestructure.net> wrote:\r
+> On Sun, 11 Dec 2011 00:46:51 +0200, Ciprian Dorin Craciun <ciprian.craciu=\r
+n@gmail.com> wrote:\r
+>> =C2=A0 =C2=A0 * in my use-case I would need each line of the output to b=\r
+e a\r
+>> standalone JSON object of an individual message; (thus I can script\r
+>> with Bash `notmuch ... | while read message ; do ... ; done`;)\r
+>\r
+> This is actually a slightly different idea than what I thought you were\r
+> originally proposing. =C2=A0Outputting a series of json objects rather th=\r
+an a\r
+> single list has been talked about for notmuch search as well. =C2=A0I'm d=\r
+on't\r
+> have a good sense of whether this is a sensible idea or not.\r
+>\r
+>> =C2=A0 =C2=A0 * maybe someone else would need that the output to contain\r
+>> **exactly one** such message (maybe the first);\r
+>\r
+> This is what I thought we were talking about. =C2=A0This is an option I w=\r
+ould\r
+> like to see, at least.\r
+\r
+\r
+    Indeed exporting multiple messages as top / root JSON objects\r
+isn't quite usable except limited import / export use-cases, thus what\r
+you propose is more sensible. And in the end by having this\r
+possibility I could easily implement the solution I'm seeking as\r
+simple as:\r
+~~~~\r
+notmuch --output=3Dmessages -- {criteria} \\r
+| xargs -L 1 -- notmuch show --format=3Djson -- \\r
+| while read message_json ; do ... ; done\r
+~~~~\r
+\r
+    But there is only one problem with such an approach: efficiency.\r
+With the snippet above I'll have as many `notmuch` process executions\r
+as messages. (And I do have quite a few of them.) Thus although\r
+Notmuch is quite fast -- as in human imperceptible -- still opening\r
+and closing the Xapian database so many times does have quite an\r
+overhead.\r
+\r
+    So in the end I think a discussion about the needed (/ wanted)\r
+use-cases would be better.\r
+\r
+    Ciprian.\r
+\r
+    P.S.: I could help implement (or at least prototype) some of these\r
+use-cases. Thus I'll watch over the thread you've pointed me to.\r