XQuery is a fully functional language and a good starting point for learning it is the W3C XQuery homepage; we found this tutorial (referenced there) particularly useful. Note that when entering a XQuery query, namespaces must be considered.

When entering a XPath query, simple wildcards *, ?, [a-z] are allowed. Note that namespaces must be considered.

Examples

To help you get started, you might want to select one of the example queries in the select box below ('XP' denotes a XPath query, 'XQ' a XQuery query):

--- Select --- Find all resource records in the registry (XP) Find all resource records in the registry (XQ) Find all DataCollections originating from Caltech (XQ) Find all resources that are SIAP services (XQ) Find all resources where Charles Messier is the contact person (XQ) Find all resources that have the word "quasar" in the description (XQ)

Query builder

Alternatively you might want to use the drop boxes to help you build your query.

Resource	Component	Action
--- Select --- Cone Search SIAP Organisation Authority Data Collection Catalog Service Table Service Resource	--- Select --- Web Service I/F Generic HTTP I/F HTTP GET I/F HTTP POST I/F Title Short name Identifier Publisher name Publisher id Creator name Creator id Creator logo Contributor name Contributor id Date Version Contact name Contact id Contact address Contact email Contact telephone Subject Description Source Source format Reference URL Type Content level Relationship type Related resource name Related resource id Spectral waveband Facility name Facility id Instrument name Instrument id Access URL Managed authority Managing organisation name Managing organisation id Resource created Resource updated Resource status Resource format Data format MIME type Access rights HTTP GET result MIME type HTTP GET parameter name HTTP GET parameter description HTTP GET parameter data type HTTP GET parameter data array size HTTP GET parameter unit HTTP GET parameter UCD Table name Table description Table column name Table column description Table column data type Table column data array size Table column unit Table column UCD Cone search maximum search radius Cone search maximum number of records Cone search VERB keyword support SIA image service type SIA maximum query region size in longitude SIA maximum query region size in latitude SIA maximum image extent in longitude SIA maximum image extent in latitude SIA maximum image size in longitude SIA maximum image size in latitude SIA maximum image size SIA maximum number of records	--- Select --- Get result And Or Contains text

Query history

Finally you might want to use reuse a previous query:

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Query

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