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: http://xmm.vilspa.esa.es/sas/6.1.0/doc/dsstruct/node3.html
Дата изменения: Tue Nov 23 00:24:40 2004 Дата индексирования: Sat Dec 22 09:26:07 2007 Кодировка: Поисковые слова: http astro.uni-altai.ru pub article.html id 1542 |
This task outputs a high level (syntax orientated) description of the given dataset. The syntax of the output is essentially the same as that expected by dsvalidate and dsverify.
The output has the form:
dataset < <dataset items> >
where,
<dataset items> is a list of one or more of
<name> <attribute> <block>
where <block> has the form
block < <block items> >
<block items > is a list of one or more of
<attribute> <array> <table>
where <array> has the form
array < <array items> >
where array is a list of one or more or
<attrribute>
For example, if a dataset is created with the following code
#include <Dal.h>
int
main()
{
DataSet* set = dataSetServer -> open( "test.dat", Dal::Create );
Attribute* att = set -> addAttribute( "att1", "an attribute", "mm" );
*att = 123;
Table* tab = set -> addTable( "table1", 10, "a table" );
Column* col = tab -> addColumn( "col1", Column::Int32, "a column" );
att = col -> addAttribute( "TLMAX", "std attribute", "Nm" );
*att = 1000;
dataSetServer -> close( set );
}
i.e. creates a dataset with name "test.dat" containing a dataset attribute called att1, ...
then the command dsstruct -set=test.dat produces the following output:
dataset < name "test.dat" attribute < name "ATT1" type Int value "123" > table < name "table1" rows 10 column < name "col1" type Int32 attribute < name "TLMAX" type Int value "1000" > > > >
If the output is redirected to the file check.ds (easily achieved e.g. use the command dsstruct -set=test.dat > check.ds )
then the command dsverify -file=check.ds or dsvalidate -sets=test.dat -template=check.sc
can be used to check the validity of the dataset test.dat.