Rasql - wrong error message for encoding

[Bang Pham Huu]

Try this query on test_grey collection

rasql -q 'SELECT  encode((byte) c, "png" ,  "{\"geoReference\":{\"crs\":\"EPSG:25831\",\"bbox\":{\"xmin\":260170,\"ymin\":4488782,\"xmax\":527395,\"ymax\":4747982}},\"metadata\":{\"Title\":\"Coverage  contains INSPIRE local  metadata\",\"fileReferenceHistory\":\"/mnt/rasservice/DataImport/data/ICGC/ICGC_DATA_HELSINKI_WS_LC/mcsc_2019_0.tif\",\"INSPIRE\":\"\n<lcrmd:LandCoverGridCoverageMD  \n\t\txmlns:ad=\\"http://inspire.ec.europa.eu/schemas/ad/4.0\\"  \n\t\txmlns:base=\\"http://inspire.ec.europa.eu/schemas/base/3.3\\"  \n\t\txmlns:base2=\\"http://inspire.ec.europa.eu/schemas/base2/2.0\\"  \n\t\txmlns:gco=\\"http://www.isotc211.org/2005/gco\\"  \n\t\txmlns:gmd=\\"http://www.isotc211.org/2005/gmd\\"  \n\t\txmlns:gn=\\"http://inspire.ec.europa.eu/schemas/gn/4.0\\"  \n\t\txmlns:lcn=\\"http://inspire.ec.europa.eu/schemas/lcn/4.0\\"  \n\t\txmlns:lcrmd=\\"http://inspire.ec.europa.eu/schemas/lcrmd/4.0\\"  \n\t\txmlns:xsi=\\"http://www.w3.org/2001/XMLSchema-instance\\"  \n\t\txsi:schemaLocation=\\"http://inspire.ec.europa.eu/schemas/lcrmd/4.0  http://test.datacove.eu/LandCoverRasterMDExt.xsd\\">\n\t<lcrmd:inspireId>\n\t\t<base:Identifier>\n\t\t\t<base:localId  >cobertes-sol-  v1r0-2009-simplificat</base:localId>\n\t\t\t<base:namespace>catalunya</base:namespace>\n\t\t</base:Identifier>\n\t</lcrmd:inspireId>\n\t<lcrmd:beginLifespanVersion>2019-03-01T00:00:00+01:00</lcrmd:beginLifespanVersion>\n\t<lcrmd:extent>\n\t\t<gmd:EX_EReason:  Parsing error 300 in line 1, column 22: Unexpected name  cxtent>\n\t\t\t<gmd:geographicElement>\n\t\t\t\t<gmd:EX_GeographicBoundingBox>\n\t\t\t\t\t<gmd:westBoundLongitude>\n\t\t\t\t\t\t<gco:Decimal>0.169154347</gco:Decimal>\n\t\t\t\t\t</gmd:westBoundLongitude>\n\t\t\t\t\t<gmd:eastBoundLongitude>\n\t\t\t\t\t\t<gco:Decimal>3.335579920</gco:Decimal>\n\t\t\t\t\t</gmd:eastBoundLongitude>\n\t\t\t\t\t<gmd:southBoundLatitude>\n\t\t\t\t\t\t<gco:Decimal>40.515122408</gco:Decimal>\n\t\t\t\t\t</gmd:southBoundLatitude>\n\t\t\t\t\t<gmd:northBoundLatitude>\n\t\t\t\t\t\t<gco:Decimal>42.883946531</gco:Decimal>\n\t\t\t\t\t</gmd:northBoundLatitude>\n\t\t\t\t</gmd:EX_GeographicBoundingBox>\n\t\t\t</gmd:geographicElement>\n\t\t</gmd:EX_Extent>\n\t</lcrmd:extent>\n\t<lcrmd:name>Mapa  de Cobertes del Sol de Catalunya (MCSC) 2009 (Simplificat - Llegenda 41  classes)</lcrmd:name>\n\t<lcrmd:nomenclatureDocumentation>\n\t\t<lcn:LandCoverNomenclature>\n\t\t\t<lcn:inspireId>\n\t\t\t\t<base:Identifier>\n\t\t\t\t\t<base:localId  >cobertes-  sol_v1r0_esp_02ca_20190415.pdf</base:localId>\n\t\t\t\t\t<base:namespace>Catalunya</base:namespace>\n\t\t\t\t</base:Identifier>\n\t\t\t</lcn:inspireId>\n\t\t\t<lcn:nomenclatureCodeList/>\n\t\t\t<lcn:responsibleParty>\n\t\t\t\t<base2:RelatedParty>\n\t\t\t\t\t<base2:organisationName>\n\t\t\t\t\t\t<gmd:LocalisedCharacterString>Institut  Cartogràfic i Geològic de Catalunya  (ICGC)</gmd:LocalisedCharacterString>\n\t\t\t\t\t</base2:organisationName>\n\t\t\t\t\t<base2:contact>\n\t\t\t\t\t\t<base2:Contact>\n\t\t\t\t\t\t\t<base2:address>\n\t\t\t\t\t\t\t\t<ad:AddressRepresentation>\n\t\t\t\t\t\t\t\t\t<ad:adminUnit>\n\t\t\t\t\t\t\t\t\t\t<gn:GeographicalName>\n\t\t\t\t\t\t\t\t\t\t\t<gn:language>cat</gn:language>\n\t\t\t\t\t\t\t\t\t\t\t<!--  language of municipality name-->\n\t\t\t\t\t\t\t\t\t\t\t<gn:nativeness  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:nameStatus  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:sourceOfName  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:pronunciation  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:spelling>\n\t\t\t\t\t\t\t\t\t\t\t\t<gn:SpellingOfName>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<!--  municipality name -->\n\t\t\t\t\t\t\t\t\t\t\t\t\t<gn:text>BReason: Parsing  error 300 in line 1, column 22: Unexpected name  carcelona</gn:text>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<gn:script>Latn</gn:script>\n\t\t\t\t\t\t\t\t\t\t\t\t</gn:SpellingOfName>\n\t\t\t\t\t\t\t\t\t\t\t</gn:spelling>\n\t\t\t\t\t\t\t\t\t\t</gn:GeographicalName>\n\t\t\t\t\t\t\t\t\t</ad:adminUnit>\n\t\t\t\t\t\t\t\t\t<!--  Street address -->\n\t\t\t\t\t\t\t\t\t<ad:locatorDesignator>Parc de  Montjüic s/n</ad:locatorDesignator>\n\t\t\t\t\t\t\t\t\t<!-- Postal  Code-->\n\t\t\t\t\t\t\t\t\t<ad:postCode>08038</ad:postCode>\n\t\t\t\t\t\t\t\t</ad:AddressRepresentation>\n\t\t\t\t\t\t\t</base2:address>\n\t\t\t\t\t\t\t<!--  e-mail of responsible person  -->\n\t\t\t\t\t\t\t<base2:electronicMailAddress>icgc@icgc.cat</base2:electronicMailAddress>\n\t\t\t\t\t\t\t<!--  phonel of responsible person -->\n\t\t\t\t\t\t\t<base2:telephoneVoice>+34  93 567 15 00</base2:telephoneVoice>\n\t\t\t\t\t\t\t<!-- web URI of  responsible  organization-->\n\t\t\t\t\t\t\t<base2:website>http://www.icgc.cat</base2:website>\n\t\t\t\t\t\t</base2:Contact>\n\t\t\t\t\t</base2:contact>\n\t\t\t\t</base2:RelatedParty>\n\t\t\t</lcn:responsibleParty>\n\t\t</lcn:LandCoverNomenclature>\n\t</lcrmd:nomenclatureDocumentation>\n\t<lcrmd:validFrom>2009-08-16</lcrmd:validFrom>\n\t<lcrmd:validTo>2009-08-17</lcrmd:validTo>\n</lcrmd:LandCoverGridCoverageMD>\"}}")  FROM test_mr AS c'

it returns error about collection alias

rasdaman error 300: Parsing error 300 in line 1, column 23: Unexpected name c.

However, this query below (without casting to byte) doesn't return error

rasql -q 'SELECT  encode( c, "png" ,  "{\"geoReference\":{\"crs\":\"EPSG:25831\",\"bbox\":{\"xmin\":260170,\"ymin\":4488782,\"xmax\":527395,\"ymax\":4747982}},\"metadata\":{\"Title\":\"Coverage  contains INSPIRE local  metadata\",\"fileReferenceHistory\":\"/mnt/rasservice/DataImport/data/ICGC/ICGC_DATA_HELSINKI_WS_LC/mcsc_2019_0.tif\",\"INSPIRE\":\"\n<lcrmd:LandCoverGridCoverageMD  \n\t\txmlns:ad=\\"http://inspire.ec.europa.eu/schemas/ad/4.0\\"  \n\t\txmlns:base=\\"http://inspire.ec.europa.eu/schemas/base/3.3\\"  \n\t\txmlns:base2=\\"http://inspire.ec.europa.eu/schemas/base2/2.0\\"  \n\t\txmlns:gco=\\"http://www.isotc211.org/2005/gco\\"  \n\t\txmlns:gmd=\\"http://www.isotc211.org/2005/gmd\\"  \n\t\txmlns:gn=\\"http://inspire.ec.europa.eu/schemas/gn/4.0\\"  \n\t\txmlns:lcn=\\"http://inspire.ec.europa.eu/schemas/lcn/4.0\\"  \n\t\txmlns:lcrmd=\\"http://inspire.ec.europa.eu/schemas/lcrmd/4.0\\"  \n\t\txmlns:xsi=\\"http://www.w3.org/2001/XMLSchema-instance\\"  \n\t\txsi:schemaLocation=\\"http://inspire.ec.europa.eu/schemas/lcrmd/4.0  http://test.datacove.eu/LandCoverRasterMDExt.xsd\\">\n\t<lcrmd:inspireId>\n\t\t<base:Identifier>\n\t\t\t<base:localId  >cobertes-sol-  v1r0-2009-simplificat</base:localId>\n\t\t\t<base:namespace>catalunya</base:namespace>\n\t\t</base:Identifier>\n\t</lcrmd:inspireId>\n\t<lcrmd:beginLifespanVersion>2019-03-01T00:00:00+01:00</lcrmd:beginLifespanVersion>\n\t<lcrmd:extent>\n\t\t<gmd:EX_EReason:  Parsing error 300 in line 1, column 22: Unexpected name  cxtent>\n\t\t\t<gmd:geographicElement>\n\t\t\t\t<gmd:EX_GeographicBoundingBox>\n\t\t\t\t\t<gmd:westBoundLongitude>\n\t\t\t\t\t\t<gco:Decimal>0.169154347</gco:Decimal>\n\t\t\t\t\t</gmd:westBoundLongitude>\n\t\t\t\t\t<gmd:eastBoundLongitude>\n\t\t\t\t\t\t<gco:Decimal>3.335579920</gco:Decimal>\n\t\t\t\t\t</gmd:eastBoundLongitude>\n\t\t\t\t\t<gmd:southBoundLatitude>\n\t\t\t\t\t\t<gco:Decimal>40.515122408</gco:Decimal>\n\t\t\t\t\t</gmd:southBoundLatitude>\n\t\t\t\t\t<gmd:northBoundLatitude>\n\t\t\t\t\t\t<gco:Decimal>42.883946531</gco:Decimal>\n\t\t\t\t\t</gmd:northBoundLatitude>\n\t\t\t\t</gmd:EX_GeographicBoundingBox>\n\t\t\t</gmd:geographicElement>\n\t\t</gmd:EX_Extent>\n\t</lcrmd:extent>\n\t<lcrmd:name>Mapa  de Cobertes del Sol de Catalunya (MCSC) 2009 (Simplificat - Llegenda 41  classes)</lcrmd:name>\n\t<lcrmd:nomenclatureDocumentation>\n\t\t<lcn:LandCoverNomenclature>\n\t\t\t<lcn:inspireId>\n\t\t\t\t<base:Identifier>\n\t\t\t\t\t<base:localId  >cobertes-  sol_v1r0_esp_02ca_20190415.pdf</base:localId>\n\t\t\t\t\t<base:namespace>Catalunya</base:namespace>\n\t\t\t\t</base:Identifier>\n\t\t\t</lcn:inspireId>\n\t\t\t<lcn:nomenclatureCodeList/>\n\t\t\t<lcn:responsibleParty>\n\t\t\t\t<base2:RelatedParty>\n\t\t\t\t\t<base2:organisationName>\n\t\t\t\t\t\t<gmd:LocalisedCharacterString>Institut  Cartogràfic i Geològic de Catalunya  (ICGC)</gmd:LocalisedCharacterString>\n\t\t\t\t\t</base2:organisationName>\n\t\t\t\t\t<base2:contact>\n\t\t\t\t\t\t<base2:Contact>\n\t\t\t\t\t\t\t<base2:address>\n\t\t\t\t\t\t\t\t<ad:AddressRepresentation>\n\t\t\t\t\t\t\t\t\t<ad:adminUnit>\n\t\t\t\t\t\t\t\t\t\t<gn:GeographicalName>\n\t\t\t\t\t\t\t\t\t\t\t<gn:language>cat</gn:language>\n\t\t\t\t\t\t\t\t\t\t\t<!--  language of municipality name-->\n\t\t\t\t\t\t\t\t\t\t\t<gn:nativeness  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:nameStatus  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:sourceOfName  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:pronunciation  nilReason=\\"missing\\"  xsi:nil=\\"true\\"/>\n\t\t\t\t\t\t\t\t\t\t\t<gn:spelling>\n\t\t\t\t\t\t\t\t\t\t\t\t<gn:SpellingOfName>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<!--  municipality name -->\n\t\t\t\t\t\t\t\t\t\t\t\t\t<gn:text>BReason: Parsing  error 300 in line 1, column 22: Unexpected name  carcelona</gn:text>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<gn:script>Latn</gn:script>\n\t\t\t\t\t\t\t\t\t\t\t\t</gn:SpellingOfName>\n\t\t\t\t\t\t\t\t\t\t\t</gn:spelling>\n\t\t\t\t\t\t\t\t\t\t</gn:GeographicalName>\n\t\t\t\t\t\t\t\t\t</ad:adminUnit>\n\t\t\t\t\t\t\t\t\t<!--  Street address -->\n\t\t\t\t\t\t\t\t\t<ad:locatorDesignator>Parc de  Montjüic s/n</ad:locatorDesignator>\n\t\t\t\t\t\t\t\t\t<!-- Postal  Code-->\n\t\t\t\t\t\t\t\t\t<ad:postCode>08038</ad:postCode>\n\t\t\t\t\t\t\t\t</ad:AddressRepresentation>\n\t\t\t\t\t\t\t</base2:address>\n\t\t\t\t\t\t\t<!--  e-mail of responsible person  -->\n\t\t\t\t\t\t\t<base2:electronicMailAddress>icgc@icgc.cat</base2:electronicMailAddress>\n\t\t\t\t\t\t\t<!--  phonel of responsible person -->\n\t\t\t\t\t\t\t<base2:telephoneVoice>+34  93 567 15 00</base2:telephoneVoice>\n\t\t\t\t\t\t\t<!-- web URI of  responsible  organization-->\n\t\t\t\t\t\t\t<base2:website>http://www.icgc.cat</base2:website>\n\t\t\t\t\t\t</base2:Contact>\n\t\t\t\t\t</base2:contact>\n\t\t\t\t</base2:RelatedParty>\n\t\t\t</lcn:responsibleParty>\n\t\t</lcn:LandCoverNomenclature>\n\t</lcrmd:nomenclatureDocumentation>\n\t<lcrmd:validFrom>2009-08-16</lcrmd:validFrom>\n\t<lcrmd:validTo>2009-08-17</lcrmd:validTo>\n</lcrmd:LandCoverGridCoverageMD>\"}}")  FROM test_mr AS c'

[Dimitar Misev]

"byte" does not exist in rasql, see ​http://doc.rasdaman.org/04_ql-guide.html#cell-types

[Peter Baumann]

please read again: it is about the error message.

[Dimitar Misev]

I think it's difficult to fix this in the rasql parser. It should say "unexpected name byte".

@apercov you can try to fix it if possible.

[Peter Baumann]

not in the parser, but in the codec factory if you don't find a matching driver.

[Dimitar Misev]

but the error is that "byte" is not a known base type name in rasdaman. It has nothing to do with encode.

[Peter Baumann]

oops, correct - I was thinking of the encode() which is totally different. OK, so back with the parser. But then again, in the rule for cast we can determine if we do not know the type, from the base types or user-defined.

BTW, friendly amendment on the format make, error message like this:

Error: Unknown cell type name 'byte'.

[Dimitar Misev]

I don't think there's any easy way to fix this. (byte) c basically parses to (identifier) identifier which is an invalid expression. (identifier) (which is what (byte) is) is valid, so then it comes to c and it becomes invalid.

[Peter Baumann]

might be a problem of the grammar being too coarse. What about

cast ::= "(" typeIdentifier ")" mddExpr
typeIdentifier ::= "byte" | ...

this should make it unambiguous to parse.

[Dimitar Misev]

As I mentioned in comment:1, "byte" is not a keyword in rasql. I should change the example in this ticket to SELECT encode((asdgfewwr) c,

[Peter Baumann]

yep, true - first thought was to hardwire our well-known base types in the syntax, but then we have the custom types.

Next attempt: at parse time, can you access the known cell types to determine whether a "(…)" contents is a type? If so, you could give a hint to the parser that a cast rule is active.

[Dimitar Misev]

That's already done:

$ rasql -q 'select (RGBPixel) rgb from rgb'
rasql: rasdaman query tool 10.2.6.
Opening database RASBASE at 127.0.0.1:7001... ok.
Executing retrieval query... ok.
rasql done.

$ rasql -q 'select (UnknownType) rgb from rgb'
rasql: rasdaman query tool 10.2.6.
Opening database RASBASE at 127.0.0.1:7001... ok.
Executing retrieval query... rasdaman error 300: Parsing error 300 in line 1, column 22: Unexpected name rgb.
aborting transaction... ok.
rasql done.

[Peter Baumann]

why then does it say "unexpected rgb" instead of "unknown UnknownType"? Would be easier to understand IMHO.