Difference between revisions of "searchEad"

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Three request parameters can be used to do a search in archival descriptions.
 
Three request parameters can be used to do a search in archival descriptions.
  
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Empty Request example:
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== Empty Request example ==
  
 
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Basic Request example:
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== Basic Request example ==
  
 
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Revision as of 08:15, 6 June 2017

Request url: https://api.archivesportaleurope.net/services/search/ead. This service is a POST-request.

This search-service delivers a list of archival descriptions with the requested searchterm. There is no distinction between the level of description. The user is able to filter results on various facets and order on various fields.



Request parameters

Three request parameters can be used to do a search in archival descriptions.

Empty Request example

{
  "count": "5",
  "startIndex": 0,
  "query": "*",
  "filters": [
    {
      "facetFieldName": "string",
      "facetFieldIds": [
        "string"
      ]
    }
  ],
  "dateFilters": [
    {
      "dateFieldName": "string",
      "dateFieldId": "string"
    }
  ],
  "sortRequest": {
    "sortType": "asc",
    "fields": [
      "string"
    ]
  }
}

Basic Request example

{
  "count": 5,
  "startIndex": 0,
  "query": "nepal",
  "filters": [
    {
      "facetFieldName": "country",
      "facetFieldIds": [
        "7"
      ]
    }
  ],
  "dateFilters": [
    {
      "dateFieldName": "fromDate",
      "dateFieldId": "1800-01-01_2"
    }
  ],
  "sortRequest": {
    "sortType": "asc",
    "fields": [
      "date"
    ]
  }
}

This example searches for archival descriptions with the term "nepal" and filters on the facet "country" with id = 7 (identifier for "NETHERLANDS") and date-facet "fromDate" with id = "1800-01-01_2" (identifier for the period 1800-1999), ordered ascending by date.

count

The resultlist is delivered in chunks of a certain size. Request parameter "count" describes the number of results that are in one chunk. Optional. Default value is 5.

startIndex

Request parameter "startIndex" enables you to select the results that you want to have. Counting starts at zero. If "count" = 5, the second chunk starts with startIndex 5, the following at startIndex 10, etc. Optional. Default value is 0.

query

Containing the searchterm(s). Required.

filters

Request parameter "filters" enables you to filter the result on facets. The facets are summarized in searchEad#facets.

dateFilters

Request parameters "dateFilters" enables you to filter the result on a certain period of time. The dateFacets are summarized in searchEad#date_facets

sortRequest

Request parameters "sortRequest" enables you to sort the result. The sortRequest contains two parameters: sortType and fields.

In "fields", you can provide a list of 1 or more fields. The resultlist is ordered on field[0] first, field[1] secondly, etc. The possible fields are:

  • date: date of the archival material, provided in <unitdate>
  • findingAidNo: number of the finding aid, provided by the repository in <eadid>
  • title: description of the archival material, provided in <unittitle>
  • referenceCode: identifier of the archival material, provided by the repository in <unitid>

In all situations you can sort ascending or descending by setting request parameter "sortType" "asc" or "desc" respectively.

Response parameters

The response contains a list of the descriptions where the requested search-term(s) was/were found.

Empty Response example: 

{
  "totalResults": 0,
  "startIndex": 0,
  "totalPages": 0,
  "eadSearchResults": [
    {
      "id": "string",
      "fondsUnitTitle": "string",
      "fondsUnitId": "string",
      "repository": "string",
      "country": "string",
      "language": "string",
      "langMaterial": "string",
      "unitDate": "string",
      "repositoryCode": "string",
      "hasDigitalObject": false,
      "numberOfDigitalObjects": 0,
      "numberOfDigitalObjectsInDescendents": 0,
      "numberOfDescendents": 0,
      "docType": "string",
      "docTypeId": "string",
      "level": "string",
      "indexDate": "string",
      "unitId": "string",
      "unitTitle": "string",
      "unitTitleWithHighlighting": "string",
      "scopeContent": "string",
      "scopeContentWithHighlighting": "string",
      "numberOfAncestors": 0
    }
  ],
  "sortFields": [
    "string"
  ],
  "facetFields": {
    "country": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "subject": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "repository": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "docType": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "level": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "hasDigitalObject": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "digitalObjectType": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "unitDateType": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ]
  },
  "facetDateFields": {
    "fromDate": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ],
    "toDate": [
      {
        "id": "string",
        "name": "string",
        "frequency": 0
      }
    ]
  }
}

Basic Response example (ie response for the basic request example above): 

{
  "totalResults": 1,
  "startIndex": 0,
  "totalPages": 1,
  "eadSearchResults": [
    {
      "id": "C85473776",
      "fondsUnitTitle": "Inventaris van de archieven van de Stichting Aids Fonds - Soa Aids Nederland, de Stichting STOP AIDS NOW! en de Stichting Werkmaatschappij Soa Aids en hun taakvoorgangers, 1914- 2008 (2011)",
      "fondsUnitId": "2.19.225",
      "repository": "Nationaal Archief",
      "country": "NETHERLANDS",
      "language": "",
      "langMaterial": "",
      "unitDate": "1994",
      "repositoryCode": "NL-HaNA",
      "hasDigitalObject": false,
      "numberOfDigitalObjects": 0,
      "numberOfDigitalObjectsInDescendents": 0,
      "numberOfDescendents": 0,
      "docType": "Descriptive Unit",
      "docTypeId": "du",
      "level": "clevel",
      "indexDate": "",
      "unitId": "2.19.225 - 2124",
      "unitTitle": "Paul Janssen ten behoeve van zijn studie aan de London School of Hygiene  & Tropical Medicine in verband met zijn onderzoek naar 'The rol for NGO's in the implementation of the National Aids Programme in Nepal'",
      "unitTitleWithHighlighting": " the implementation of the National Aids Programme in <em>Nepal</em>'",
      "scopeContent": "",
      "scopeContentWithHighlighting": null,
      "numberOfAncestors": 8
    }
  ],
  "sortFields": [
    "date",
    "findingAidNo",
    "orderId",
    "title",
    "referenceCode"
  ],
  "facetFields": {
    "country": [
      {
        "id": "7",
        "name": "NETHERLANDS",
        "frequency": 1
      }
    ],
    "subject": [],
    "repository": [
      {
        "id": "32171",
        "name": "Nationaal Archief",
        "frequency": 1
      }
    ],
    "docType": [
      {
        "id": "fa",
        "name": "fa",
        "frequency": 1
      }
    ],
    "level": [
      {
        "id": "clevel",
        "name": "clevel",
        "frequency": 1
      }
    ],
    "hasDigitalObject": [
      {
        "id": "false",
        "name": "false",
        "frequency": 1
      }
    ],
    "digitalObjectType": [],
    "unitDateType": [
      {
        "id": "normal",
        "name": "normal",
        "frequency": 1
      }
    ]
  },
  "facetDateFields": {
    "fromDate": [
      {
        "id": "1980-01-01_3",
        "name": "1980-1999",
        "frequency": 1
      }
    ],
    "toDate": [
      {
        "id": "1800-01-01_2",
        "name": "1800-1999",
        "frequency": 1
      }
    ]
  }
}

totalResults

The response parameter "totalResults" gives the number of results.

startIndex

The response parameter "startIndex" gives the number of the chunk you requested.

totalPages

The response parameter "totalPages" gives the number of chunks.

eadSearchResults

Enumeration of the results. A result could be a holdings guide, a source guide, a finding aid, or a descriptive unit (ie. a sublevel component). They are all optional except "id".

id Internal APE identifier of the result
fondsUnitTitle Title of the finding aid
fondsUnitId Identifier of the fonds provided by the repository
repository Name of the repository holding the fonds
country Name of the country where the repository is. In English
language Language of the description of the result
langMaterial Language in which the result is created
unitDate Date of creation of the result.
repositoryCode Code of the repository holding the fonds. Preferably, but not necessarily ISIL
hasDigitalObject TRUE/FALSE (only for the search result)
numberOfDigitalObjects Amount of digital objects available for the search result (is always 0 in case 'hasDigitalObject' = FALSE)
numberOfDigitalOjectsInDescendents Amount of digital objects available for descendents of the search result (can be > 0 in case 'hasDigtalObject' = FALSE)
numberOfDescendents Amount of descendents of the search result
docType Type of archives describing document where the result is found : "Finding Aid", "Holdings Guide", "Source Guide" or "Descriptive Unit"
docTypeId Acronym for the type of archives document ("fa" for "Finding Aid", "hg" for "Holdings Guide", "sg" for "Source Guide" or "du" for "Descriptive unit"
level Type of result: "archdesc" for highest level description or "clevel" for subordinate components
indexDate Date showing when the result was ingested/updated and indexed in the Archives Portal Europe (ie last change date)
unitId Identifier of the result provided by the repository
unitTitle Description of the result
unitTitleWithHighlighting Description of the result, with the mark "<em>" to emphasize the search term that was used in the search request
scopeContent More descriptive information about the result
scopeContentWithHighlighting More descriptive information about the result, with the mark "<em>" to emphasize the search term that was used in the search request
numberOfAncestors Amount of ancestors (higher levels) for the result

sortFields

This response parameter sums up the various fields you can use to order the resultList in a, new, additional request (see searchEad#sortRequest):

  • date
  • findingAidNo
  • title
  • referenceCode

facetFields

This response parameter gives an enumeration of facets. Every facet has three variables.

id Internal APE identifier of the value. Use this "id" in the filter request parameter
name Human readable value (in English)
frequency The number of results of this facet containing the searchterm

facets

country Name of the country where the repository is. In English
subject Subject that is added to the archival description
repository Name of the repository holding the fonds
docType Type of archives describing document where the result is found : "fa" for Finding Aid, "hg" for Holdings Guide or "sg" for Source Guide
level Type of result: "archdesc" for highest level description or "clevel" for subordinate components
hasDigitalObject TRUE/FALSE
digitalObjectType Type of the Object: most of the time: IMAGE
unitDateType Type of date describing the archival unit.

date facets

With the date facets you can zoom in on the period of time. Results are grouped in periods of two centuries in the first step. If you use these groupings in the request-parameter dateFilter, you'll have new dateFacets that groups the results into groups of two decades

fromDate Grouping of the search result in starting dates.
toDate Grouping of the search result in ending dates.
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