| <?xml version="1.0" encoding="UTF-8"?> <!--W3C Schema for VOTable = Virtual Observatory Tabular Format .Version 1.0 : 15-Apr-2002 .Version 1.09: 23-Jan-2004 Version 1.09 .Version 1.09: 30-Jan-2004 Version 1.091 .Version 1.09: 22-Mar-2004 Version 1.092 .Version 1.094: 02-Jun-2004 GROUP does not contain FIELD .Version 1.1 : 10-Jun-2004 remove the complexContent .Version 1.11: GL: 23-May-2006 remove most root elements, use name= type= iso ref= structure .Version 1.11: GL: 29-Aug-2006 review and added comments (prefixed by GL) before sending to Francois Ochsenbein .Version 1.12: FO: Preliminary Version 1.2 .Version 1.18: FO: Tested (jax) version 1.2 .Version 1.19: FO: Completed INFO attributes .Version 1.20: FO: Added xtype; content-role is less restrictive (May2009) .Version 1.20a: FO: PR-20090710 Cosmetics. .Version 1.20b: FO: INFO does not accept sub-elements (2009-09-29) .Version 1.20c: FO: elementFormDefault="qualified" to stay compatible with 1.1 .Version 1.3: MT: Added BINARY2 element .Version 1.3: MT: Further relaxed LINK content-role type to token .Version 1.3-Erratum-2 MT: Made slight change to precType pattern .Version 1.4pre1: MD: merged 1.3-Erratrum 2, added TIMESYS. .Version 1.4wd-a: TD: updates for initial draft of v1.4. .Version 1.4: TD: Change version to 1.4 --> <xs:schema elementFormDefault="qualified" targetNamespace="http://www.ivoa.net/xml/VOTable/v1.3" version="1.4" xmlns="http://www.ivoa.net/xml/VOTable/v1.3" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:annotation> <xs:documentation> VOTable is meant to serialize tabular documents in the context of Virtual Observatory applications. This schema corresponds to the VOTable document available from http://www.ivoa.net/Documents/latest/VOT.html </xs:documentation> </xs:annotation> <!-- Here we define some interesting new datatypes: - anyTEXT may have embedded XHTML (conforming HTML) - astroYear is an epoch in Besselian or Julian year, e.g. J2000 - arrayDEF specifies an array size e.g. 12x23x* - dataType defines the acceptable datatypes - ucdType defines the acceptable UCDs (UCD1+) - precType defines the acceptable precisions - yesno defines just the 2 alternatives --> <xs:sequence> <xs:any maxOccurs="unbounded" minOccurs="0" processContents="skip"/> </xs:sequence> </xs:complexType> <xs:pattern value="[JB]?[0-9]+([.][0-9]*)?"/> </xs:restriction> </xs:simpleType> <xs:annotation> <xs:documentation> Accept UCD1+ Accept also old UCD1 (but not / + %) including SIAP convention (with :) </xs:documentation> </xs:annotation> <xs:pattern value="[A-Za-z0-9_.:;\-]*"/> <!-- UCD1 use also / + % --> </xs:restriction> </xs:simpleType> <xs:pattern value="([0-9]+x)*[0-9]*[*]?(s\W)?"/> </xs:restriction> </xs:simpleType> <xs:enumeration value="gzip"/> <xs:enumeration value="base64"/> <xs:enumeration value="dynamic"/> <xs:enumeration value="none"/> </xs:restriction> </xs:simpleType> <xs:enumeration value="boolean"/> <xs:enumeration value="bit"/> <xs:enumeration value="unsignedByte"/> <xs:enumeration value="short"/> <xs:enumeration value="int"/> <xs:enumeration value="long"/> <xs:enumeration value="char"/> <xs:enumeration value="unicodeChar"/> <xs:enumeration value="float"/> <xs:enumeration value="double"/> <xs:enumeration value="floatComplex"/> <xs:enumeration value="doubleComplex"/> </xs:restriction> </xs:simpleType> <xs:pattern value="[EF]?[0-9][0-9]*"/> </xs:restriction> </xs:simpleType> <xs:enumeration value="yes"/> <xs:enumeration value="no"/> </xs:restriction> </xs:simpleType> </xs:complexType> </xs:complexType> <xs:sequence> </xs:sequence> </xs:complexType> <!-- VALUES expresses the values that can be taken by the data in a column or by a parameter --> <xs:sequence> </xs:sequence> <xs:simpleType> <xs:enumeration value="legal"/> <xs:enumeration value="actual"/> </xs:restriction> </xs:simpleType> </xs:attribute> <!-- xs:attribute name="invalid" type="yesno" default="no"/ --> </xs:complexType> <!-- The LINK is a URL (href) or some other kind of reference (gref) --> <xs:annotation> <xs:documentation> content-role was previsouly restricted as: <![CDATA[ <xs:attribute name="content-role"> <xs:simpleType> <xs:restriction base="xs:NMTOKEN"> <xs:enumeration value="query"/> <xs:enumeration value="hints"/> <xs:enumeration value="doc"/> <xs:enumeration value="location"/> </xs:restriction> </xs:simpleType> </xs:attribute> ]]> ; is now a token. </xs:documentation> </xs:annotation> <!-- Deprecated in V1.1 --> </xs:complexType> <!-- INFO is defined in Version 1.2 as a PARAM of String type <xs:complexType name="Info"> <xs:complexContent> <xs:restriction base="Param"> <xs:attribute name="unit" fixed=""/> <xs:attribute name="datatype" fixed="char"/> <xs:attribute name="arraysize" fixed="*"/> </xs:restriction> </xs:complexContent> </xs:complexType> -or- as a full definition: <xs:complexType name="Info"> <xs:sequence> <xs:element name="DESCRIPTION" type="anyTEXT" minOccurs="0"/> <xs:element name="VALUES" type="Values" minOccurs="0"/> <xs:element name="LINK" type="Link" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> <xs:attribute name="name" type="xs:token" use="required"/> <xs:attribute name="value" type="xs:string" use="required"/> <xs:attribute name="ID" type="xs:ID"/> <xs:attribute name="unit" type="xs:token"/> <xs:attribute name="xtype" type="xs:token"/> <xs:attribute name="ref" type="xs:IDREF"/> <xs:attribute name="ucd" type="ucdType"/> <xs:attribute name="utype" type="xs:string"/> </xs:complexType> --> <!-- No sub-element is accepted in INFO for backward compatibility --> <xs:simpleContent> </xs:extension> </xs:simpleContent> </xs:complexType> <!-- Expresses the coordinate system we are using --> <!-- Deprecated V1.2 --> <xs:annotation> <xs:documentation> Deprecated in Version 1.2 </xs:documentation> </xs:annotation> <xs:simpleContent> <xs:simpleType> <xs:enumeration value="eq_FK4"/> <xs:enumeration value="eq_FK5"/> <xs:enumeration value="ICRS"/> <xs:enumeration value="ecl_FK4"/> <xs:enumeration value="ecl_FK5"/> <xs:enumeration value="galactic"/> <xs:enumeration value="supergalactic"/> <xs:enumeration value="xy"/> <xs:enumeration value="barycentric"/> <xs:enumeration value="geo_app"/> </xs:restriction> </xs:simpleType> </xs:attribute> </xs:extension> </xs:simpleContent> </xs:complexType> <xs:annotation> <xs:documentation> This is a time origin of a time coordinate, given as a Julian Date for the the time scale and reference point defined. It is usually given as a floating point literal; for convenience, the magic strings “MJD-origin” (standing for 2400000.5) and “JD-origin” (standing for 0) are also allowed. </xs:documentation> </xs:annotation> <xs:pattern value="[+-]?([0-9]+\.?[0-9]*|\.[0-9]+)([eE][+-]?[0-9]+)?|(JD|MJD)-origin"/> </xs:restriction> </xs:simpleType> <xs:simpleContent> <xs:annotation> <xs:documentation> The time origin is the offset or the time coordinate to Julian Date. The timeorigin attribute MUST be given unless the time's representation contains a year of a calendar era, in which case it MUST NOT be present. </xs:documentation> </xs:annotation> </xs:attribute> <xs:annotation> <xs:documentation> This is the time scale used. Values SHOULD be taken from the IVOA timescale vocabulary (http://www.ivoa.net/rdf/timescale). </xs:documentation> </xs:annotation> </xs:attribute> <xs:annotation> <xs:documentation> The reference position SHOULD be taken from the IVOA refposition vocabulary (http://www.ivoa.net/rdf/refposition). </xs:documentation> </xs:annotation> </xs:attribute> </xs:extension> </xs:simpleContent> </xs:complexType> <xs:annotation> <xs:documentation> Deprecated in Version 1.1 </xs:documentation> </xs:annotation> <xs:choice maxOccurs="unbounded" minOccurs="0"> </xs:choice> </xs:complexType> <!-- FIELD is the definition of what is in a column of the table --> <xs:sequence> <!-- minOccurs="0" maxOccurs="unbounded" --> <!-- maxOccurs="2" --> </xs:sequence> <!-- GL: is the next deprecated element remaining (is not in PARAM, but will in new model be inherited) --> <!-- type is not in the Version 1.1, but is kept for backward compatibility purposes --> <xs:simpleType> <xs:enumeration value="hidden"/> <xs:enumeration value="no_query"/> <xs:enumeration value="trigger"/> <xs:enumeration value="location"/> </xs:restriction> </xs:simpleType> </xs:attribute> </xs:complexType> <!-- A PARAM is similar to a FIELD, but it also has a "value" attribute --> <!-- GL: implemented here as a subtype as suggested we do in Kyoto. --> <xs:complexContent> </xs:extension> </xs:complexContent> </xs:complexType> <!-- GROUP groups columns; may include descriptions, fields/params/groups --> <xs:sequence> <!-- GL I guess I can understand the next choice element as one may (?) really want to group fields and params and groups in a particular order. --> <xs:choice maxOccurs="unbounded" minOccurs="0"> <!-- GL a GroupRef could remove recursion --> </xs:choice> </xs:sequence> </xs:complexType> <!-- FIELDref and PARAMref are references to FIELD or PARAM defined in the parent TABLE or RESOURCE --> <!-- GL This can not be enforced in XML Schema, so why not IDREF in <Group> ? In particular if the UCD and utype attributes will NOT be added --> </xs:complexType> </xs:complexType> <!-- DATA is the actual table data, in one of three formats --> <!-- GL in Kyoto we discussed the option of having the specific Data items be subtypes of Data: --> <!-- <xs:complexType name="Data" abstract="true"/> <xs:complexType name="TableData"> <xs:complexContent> <xs:extension base="Data"> ... etc </xs:extension> </xs:complexContent> </xs:complexType> --> <xs:annotation> <xs:documentation> Added in Version 1.2: INFO for diagnostics </xs:documentation> </xs:annotation> <xs:sequence> <xs:choice> </xs:choice> </xs:sequence> </xs:complexType> <!-- Pure XML data --> <xs:sequence> </xs:sequence> </xs:complexType> <xs:simpleContent> <!-- xs:attribute name="ref" type="xs:IDREF"/ --> <xs:annotation> <xs:documentation> The 'encoding' attribute is added here to avoid problems of code generators which do not properly interpret the TR/TD structures. 'encoding' was chosen because it appears in appendix A.5 </xs:documentation> </xs:annotation> </xs:extension> </xs:simpleContent> </xs:complexType> <xs:annotation> <xs:documentation> The ID attribute is added here to the TR tag to avoid problems of code generators which do not properly interpret the TR/TD structures </xs:documentation> </xs:annotation> <xs:sequence> </xs:sequence> </xs:complexType> <!-- FITS file, perhaps with specification of which extension to seek to --> <xs:sequence> </xs:sequence> </xs:complexType> <!-- BINARY data format --> <xs:sequence> </xs:sequence> </xs:complexType> <!-- BINARY2 data format --> <xs:sequence> </xs:sequence> </xs:complexType> <!-- STREAM can be local or remote, encoded or not --> <xs:simpleContent> <xs:simpleType> <xs:enumeration value="locator"/> <xs:enumeration value="other"/> </xs:restriction> </xs:simpleType> </xs:attribute> <xs:simpleType> <xs:enumeration value="onLoad"/> <xs:enumeration value="onRequest"/> <xs:enumeration value="other"/> <xs:enumeration value="none"/> </xs:restriction> </xs:simpleType> </xs:attribute> </xs:extension> </xs:simpleContent> </xs:complexType> <!-- A TABLE is a sequence of FIELD/PARAMs and LINKS and DESCRIPTION, possibly followed by a DATA section --> <xs:annotation> <xs:documentation> Added in Version 1.2: INFO for diagnostics </xs:documentation> </xs:annotation> <xs:sequence> <!-- GL: why a choice iso for example --> <!-- <xs:element name="PARAM" type="Param" minOccurs="0" maxOccurs="unbounded"/> <xs:element name="FIELD" type="Field" minOccurs="0" maxOccurs="unbounded"/> <xs:element name="GROUP" type="Group" minOccurs="0" maxOccurs="unbounded"/> --> <!-- This could also enforce groups to be defined after the fields and params to which they must have a reference, which is somewhat more logical --> <!-- Added Version 1.2: --> <!-- An empty table without any FIELD/PARAM should not be acceptable --> <xs:choice maxOccurs="unbounded" minOccurs="1"> </xs:choice> <!-- This would allow several DATA parts in a table (future extension?) <xs:sequence minOccurs="0" maxOccurs="unbounded"> <xs:element name="DATA" type="Data"/> <xs:element name="INFO" type="Info" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> --> </xs:sequence> </xs:complexType> <!-- RESOURCES can contain DESCRIPTION, (INFO|PARAM|COSYS), LINK, TABLEs --> <xs:annotation> <xs:documentation> Added in Version 1.2: INFO for diagnostics in several places </xs:documentation> </xs:annotation> <xs:sequence> <xs:choice maxOccurs="unbounded" minOccurs="0"> </xs:choice> <xs:sequence maxOccurs="unbounded" minOccurs="0"> <xs:choice> </xs:choice> </xs:sequence> <!-- Suggested Doug Tody, to include new RESOURCE types --> <xs:any maxOccurs="unbounded" minOccurs="0" namespace="##other" processContents="lax"/> </xs:sequence> <xs:simpleType> <xs:enumeration value="results"/> <xs:enumeration value="meta"/> </xs:restriction> </xs:simpleType> </xs:attribute> <!-- Suggested Doug Tody, to include new RESOURCE attributes --> <xs:anyAttribute namespace="##other" processContents="lax"/> </xs:complexType> <!-- VOTable is the root element --> <xs:complexType> <xs:sequence> <!-- Deprecated --> <xs:choice maxOccurs="unbounded" minOccurs="0"> </xs:choice> </xs:sequence> <xs:simpleType> <xs:enumeration value="1.3"/> <xs:enumeration value="1.4"/> </xs:restriction> </xs:simpleType> </xs:attribute> </xs:complexType> </xs:element> </xs:schema> |
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