Introduction

pycsw is an OARec and OGC CSW server implementation written in Python.

Features

• implements OGC API - Records - Part 1: Core
• implements OGC API - Features - Part 3: Filtering
• implements Common Query Language (CQL2)
• certified OGC Compliant and OGC Reference Implementation for both CSW 2.0.2 and CSW 3.0.0
• harvesting support for WMS, WFS, WCS, WPS, WAF, CSW, SOS
• implements INSPIRE Discovery Services 3.0
• implements ISO Metadata Application Profile 1.0.0
• implements FGDC CSDGM Application Profile for CSW 2.0
• implements the Search/Retrieval via URL (SRU) search protocol
• implements Full Text Search capabilities
• implements OGC OpenSearch Geo and Time Extensions
• implements Open Archives Initiative Protocol for Metadata Harvesting
• supports ISO, Dublin Core, DIF, FGDC, Atom, GM03 and DataCite metadata models
• CGI or WSGI deployment
• simple configuration
• transactional capabilities (OGC API - Records and CSW-T)
• flexible repository configuration
• GeoNode connectivity
• HHypermap connectivity
• Open Data Catalog connectivity
• CKAN connectivity
• federated catalogue distributed searching
• realtime XML Schema validation
• extensible profile plugin architecture

Standards Support

Standard	Version(s)
OGC API - Records - Part 1: Core	1.0
OGC API - Features - Part 3: Filtering	draft
OGC API - Features - Part 4: Create, Replace, Update and Delete	draft
OGC CSW	2.0.2/3.0.0
OGC Filter	1.1.0/2.0.0
OGC OWS Common	1.0.0/2.0.0
OGC GML	3.1.1
OGC SFSQL	1.2.1
OGC GeoRSS	1.0
Dublin Core	1.1
SOAP	1.2
ISO 19115	2003
ISO 19139	2007
ISO 19119	2005
NASA DIF	9.7
FGDC CSDGM	1998
GM03	2.1
SRU	1.1
OGC OpenSearch	1.0
OAI-PMH	2.0
DataCite	4.3

OGC API - Records support

• Part 1: Core

OGC API - Features support

• Part 3: Filtering
• Part 4: Create, Replace, Update and Delete

CQL

• Common Query Language (CQL2)

Supported Output Formats

• JSON (default)
• XML

Supported Filters

• q
• datetime
• filter / filter-lang (CQL)
• bbox
• all properties (property=value)

Paging

• limit
• offset

CSW Support

Supported Operations

Request	Optionality	Supported	HTTP method binding(s)
GetCapabilities	mandatory	yes	GET (KVP) / POST (XML) / SOAP
DescribeRecord	mandatory	yes	GET (KVP) / POST (XML) / SOAP
GetRecords	mandatory	yes	GET (KVP) / POST (XML) / SOAP
GetRecordById	optional	yes	GET (KVP) / POST (XML) / SOAP
GetRepositoryItem	optional	yes	GET (KVP)
GetDomain	optional	yes	GET (KVP) / POST (XML) / SOAP
Harvest	optional	yes	GET (KVP) / POST (XML) / SOAP
UnHarvest	optional	no
Transaction	optional	yes	POST (XML) / SOAP

Note

Asynchronous processing supported for GetRecords and Harvest requests (via csw:ResponseHandler)

Note

Supported Harvest Resource Types are listed in Transactions using CSW

Supported Output Formats

• XML (default)
• JSON

Supported Output Schemas

• Dublin Core
• ISO 19139
• FGDC CSDGM
• NASA DIF
• Atom
• GM03
• DataCite

Supported Sorting Functionality

• ogc:SortBy
• ascending or descending
• aspatial (queryable properties)
• spatial (geometric area)

Supported Filters

Full Text Search

• csw:AnyText

Geometry Operands

• gml:Point
• gml:LineString
• gml:Polygon
• gml:Envelope

Note

Coordinate transformations are supported

Spatial Operators

• BBOX
• Beyond
• Contains
• Crosses
• Disjoint
• DWithin
• Equals
• Intersects
• Overlaps
• Touches
• Within

Logical Operators

• Between
• EqualTo
• LessThanEqualTo
• GreaterThan
• Like
• LessThan
• GreaterThanEqualTo
• NotEqualTo
• NullCheck

Functions

• length
• lower
• ltrim
• rtrim
• trim
• upper

OAI-PMH Support

Supported Operations

• GetRecord
• Identify
• ListIdentifiers
• ListMetadataFormats
• ListRecords
• ListSets

Supported Filters

• from
• until
• set

Paging

• resumptionToken