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Mímir XML Service (http://services.gate.ac.uk:80/mimir)

This is the Mímir search Web Service on http://services.gate.ac.uk:80/mimir, searching index "BBC News Demo".

You can also search this index using the web interface.

A call to this service consists of a normal HTTP connection to a URL like: http://services.gate.ac.uk/mimir/gpd/search/action, where the action value is the name of one of the supported actions, described below.

Parameters may be supplied as query parameters with a GET request or in normal application/x-www-form-urlencoded form in a POST request. Alternatively, they may be supplied as XML (if the request content type is text/xml or application/xml) of the form:

<request xmlns="http://gate.ac.uk/ns/mimir">
  <firstParam>value</firstParam>
  <secondParam>value</secondParam>
</request>

The first request to the service will return a session cookie, which must be passed back with all subsequent requests.

help Prints this help message.
Parameters: none
Returns: this help page.
postQuery Action for starting a new query.
Parameters:
queryString the text of the query.
Returns: the ID of the new query, if successful.
documentsCount Gets the number of result documents.
Parameters:
queryId the ID of the requested query.
Returns: -1 if the search has not yet completed, or the total number of result documents otherwise.
documentsCurrentCount Gets the number of result documents found so far.
Parameters:
queryId the ID of the requested query.
Returns: the number of result documents found so far. After the search completes, the result returned by this call is identical to that of documentsCount.
documentId Obtains the document ID for the document at a given rank (position in the results list).
Parameters:
queryId the ID of the requested query.
rank the rank (position in the results list) for the requested document.
Returns: ID of the requested document (an integer value).
documentScore Obtains the score for the document at a given rank (position in the results list).
Parameters:
queryId the ID of the requested query.
rank the rank (position in the results list) for the requested document.
Returns: the score for the requested document, a floating point (double precision) value.
documentHits Action for obtaining the hits for a given document.
Parameters:
queryId the ID of the requested query.
rank the rank (position in the results list) for the requested document.

Returns: a list of hits, each defined by a document ID, a termPosition, and a length.

documentText Action for obtaining [a segment of] the text of a document.
Parameters:
queryId the ID of an active query, to be used as a context for this call.
rank the rank (position in the results list) for the requested document.
termPosition (optional) the index of the first token to be returned, defaults to 0 if omitted, i.e. start from the beginning of the document.
length (optional) the number of tokens (and spaces) to be returned. If omitted, all tokens from position to the end of the document will be returned.

Returns: the text of the document [segment] requested, as a list of tokens and space pairs.

documentMetadata Action for obtaining the document metadata.
Parameters:
queryId the ID of an active query, to be used as a context for this call.
rank the rank (position in the results list) for the requested document.
fieldNames (optional) a comma-separated list of other field names to be returned.

Returns:

  • the document URI
  • the document title
  • the values for the other field names, if requested and present
documentMetadata Action for obtaining the document metadata.
Parameters:
documentId the document ID (as obtained from a call to the documentId action) for the requested document.
fieldNames (optional) a comma-separated list of other field names to be returned.

Returns:

  • the document URI
  • the document title
  • the values for the other field names, if requested and present
renderDocument Renders the document text and hits, in the context of a given query. The html of the document is rendered directly to the response stream of this connection.
Parameters:
queryId the ID of the requested query.
rank the rank (position in the results list) for the requested document.
Returns: the HTML source of the rendered document.
renderDocument Renders the document text outside of the context of any given query. The html of the document is rendered directly to the response stream of this connection.
Parameters:
documentId the document ID (as obtained from a call to the documentId action) for the requested document. Finding documents by ID is outside the scope of any query, so there will be no hit highlights.
Returns: the HTML source of the rendered document.
close Action for releasing a query.
Parameters:
queryId the ID of the requested query.
Returns: the exit state (success or error).

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