O comando XML DECODE converte um valor salvado como uma string XML em um valor 4D. A conversão se realiza automaticamente dependendo das seguintes regras:
Valor | Exemplos | Conversão em sistema inglês |
numérico | <Price>8,5</Price><Price>8.5</Price> | Real: 8.5 |
Booleano | <Double>1</Double> <Double>0</Double> ou <Double>true</Double> <Double>false</Double> | Boolean: True/False |
BLOB | | Base64 decoding |
Imagens | | Base64 decoding + BLOB to picture command |
Datas | 2009-10-25T01:03:20+01:00 | Elimina a parte hora e a zona horária: !10/25/2009! |
Horas | 2009-10-25T01:03:20+01:00 | Elimina a parte data e a zona horária: ?01:03:20? |
Importação de dados desde um documento XML no qual os valores são guardados como atributos.
Exemplo do documento XML:
<CD Date="2003-01-01T00:00:00Z" Description="This double CD reissued by EMI in 1995 combines 4 Stabat mater hymns. One by Rossini interpreted by the Berlin Symphony Orchestra, directed by Karl Forster. Followed by a work of Verdi, by the Philharmonic Orchestra, directed by Carlo Maria Giulini. On the second CD, you will find Francis Poulenc interpreted by Régine Crespin. This compilation ends with a little-known version, that of the Polish composer Karol Szymanowski. Polish National Radio Symphony Orchestra directed by Antoni Wit" Double="true" Duration="7246" Type="Sacred music" CD_ID="5" Performer="Various" Price="8.5" Title="4 Stabat mater"/>
Repeat
MyEvent:=SAX Get XML node(DocRef)
Case of
:(MyEvent=XML Start Element)
ARRAY TEXT(arrAttrNames;0)
ARRAY TEXT(arrAttrValues;0)
SAX GET XML ELEMENT(DocRef;vName;vPrefix;arrAttrNames;arrAttrValues)
If(vName="CD")
CREATE RECORD([CD])
For($i;1;Size of array(arrAttrNames))
$attrName:=arrAttrNames{$i}
Case of
:($attrName="CD_ID")
XML DECODE(arrAttrValues{$i};[CD]CD_ID)
:($attrName="Title")
[CD]Work:=arrAttrValues{$i}
:($attrName="Price")
XML DECODE(arrAttrValues{$i};[CD]Price)
:($attrName="Date")
XML DECODE(arrAttrValues{$i};[CD]Date entered)
:($attrName="Duration")
XML DECODE(arrAttrValues{$i};[CD]Total_duration)
:($attrName="Double")
XML DECODE(arrAttrValues{$i};[CD]Double_CD)
End case
End for
End if
...
End case
Until(MyEvent=XML Start Document)