MarkLogic 10 Product DocumentationPOST /v1/eval
Summary
Evaluate an ad-hoc query expressed using XQuery or server-side JavaScript.
| URL Parameters | |
|---|---|
| xquery? |
The query to evaluate, expressed using XQuery. This parameter can
only be specified as x-www-form-urlencoded data in
the request body. You must include either this parameter or the
javascript parameter, but not both.
|
| javascript? |
The query to evaluate, expressed using server-side JavaScript. This
parameter can only be specified as x-www-form-urlencoded
data in the request body. You must include either this parameter or
the xquery parameter, but not both.
|
| vars? |
External variables to pass to the query during evaluation; see the
Usage notes for syntax. This parameter can only be specified as
x-www-form-urlencoded data in the request body.
|
| database? | Perform this operation on the named content database instead of the default content database associated with the REST API instance. The database can be identified by name or by database id. Using an alternative database requires the "eval-in" privilege; for details, see Security Requirements in the REST Application Developer's Guide. |
| txid? |
The transaction identifier of the multi-statement transaction in
which to service this request. Use the /transactions
service to create and manage multi-statement transactions.
|
| Response Headers | |
|---|---|
| Content-type |
The MIME type of the data in the response body. This request always
returns multipart/mixed, in the same format returned
by the XDBC protocol.
|
Response
Upon success, MarkLogic Server responds with 200 OK. The response
body is multipart/mixed, with one part for each result
produced by evaluating the query.
Required Privileges
This operation requires the following privileges or equivalent.http://marklogic.com/xdmp/privileges/xdmp-eval
http://marklogic.com/xdmp/privileges/xdmp-eval-in
http://marklogic.com/xdmp/privileges/xdbc-eval
http://marklogic.com/xdmp/privileges/xdbc-eval-in
Usage Notes
This method is equivalent to calling xdmp:eval (XQuery)
or xdmp.eval (JavaScript).
If the query depends on external variables, supply the variables values
using the vars parameter. Use following format for the
value of the vars parameter in the request body:
{"paramName":"paramValue", "paramName":"paramValue",...}
For XQuery external parameters, you can include a namesapce URI by
prefixing the parameter name with {theURI}. For example,
to supply a value for the parameter "title" in the namespace
"http://marklogic.com/example", express the parameter name and value as:
{"http://marklogic.com/example}title":"value".
For details, see Evaluating an Ad-Hoc Query in the REST Application Developer's Guide.
Example
$ cat body.sjs
javascript=
xdmp.arrayValues([word1, word2, word1 %2B " " %2B word2])
&
vars={"word1":"hello","word2":"world"}
$ curl --anyauth --user user:password -X POST -i -d @./body.sjs \
-H "Content-type: application/x-www-form-urlencoded" \
-H "Accept: multipart/mixed; boundary=BOUNDARY" \
http://localhost:8000/v1/eval
==> Evaluate the JavaScript query from the file body.sjs on MarkLogic Server.
The response includes 3 parts, corresponding to the three items returned
by the query: The value of word1, the value of word2, and the result of
concantenating the two values. MarkLogic returns a response similar to
the following:
HTTP/1.1 200 OK
Server: MarkLogic 8.0-20141122
Set-Cookie: TxnMode=query; path=/
Set-Cookie: TxnID=null; path=/
Content-Type: multipart/mixed; boundary=ccbb9539c65b0631
Content-Length: 279
Connection: Keep-Alive
Keep-Alive: timeout=5
--ccbb9539c65b0631
Content-Type: text/plain
X-Primitive: untypedAtomic
hello
--ccbb9539c65b0631
Content-Type: text/plain
X-Primitive: untypedAtomic
world
--ccbb9539c65b0631
Content-Type: text/plain
X-Primitive: untypedAtomic
hello world
--ccbb9539c65b0631--
Example
$ cat body.xqy
xquery=
xquery version "1.0-ml";
declare variable $word1 as xs:string external;
declare variable $word2 as xs:string external;
($word1, $word2, fn:concat($word1, " ", $word2))
&
vars={"word1":"hello","word2":"world"}
$ curl --anyauth --user user:password -X POST -i -d @./body.xqy \
-H "Content-type: application/x-www-form-urlencoded" \
-H "Accept: multipart/mixed; boundary=BOUNDARY" \
http://localhost:8000/v1/eval
==> Evaluate the XQuery query from the file body.xqy on MarkLogic Server.
The response includes 3 parts, corresponding to the three items returned
by the query: The value of $word1, the value of $word2, and the result of
concantenating the two values. MarkLogic returns a response similar to
the following:
HTTP/1.1 200 OK
Server: MarkLogic 8.0-20141122
Set-Cookie: TxnMode=auto; path=/
Set-Cookie: TxnID=null; path=/
Content-Type: multipart/mixed; boundary=ad4119fdb5f9569e
Content-Length: 258
Connection: Keep-Alive
Keep-Alive: timeout=5
--ad4119fdb5f9569e
Content-Type: text/plain
X-Primitive: string
hello
--ad4119fdb5f9569e
Content-Type: text/plain
X-Primitive: string
world
--ad4119fdb5f9569e
Content-Type: text/plain
X-Primitive: string
hello world
--ad4119fdb5f9569e--