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Rasqal RDF Query Library Manual | |
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typedef rasqal_variables_table; rasqal_variables_table* rasqal_new_variables_table (rasqal_world *world); void rasqal_free_variables_table (rasqal_variables_table *vt); rasqal_variable* rasqal_variables_table_add (rasqal_variables_table *vt,rasqal_variable_type type,unsigned char *name,rasqal_literal *value);
A table of rasqal_variable usually associated with a rasqal_query query or rasqal_query_results query result set. The order of the variables in the table may be significant, such as for a standalone query result set in which case it might define the order of variables in resulting rows.
typedef struct rasqal_variables_table_s rasqal_variables_table;
Internal - for now
rasqal_variables_table* rasqal_new_variables_table (rasqal_world *world);
Constructor - create a new variables table
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rasqal world |
Returns : |
new variables table or NULL On failure |
void rasqal_free_variables_table (rasqal_variables_table *vt);
Destructor - destroy a new variables table
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rasqal variables table |
rasqal_variable* rasqal_variables_table_add (rasqal_variables_table *vt,rasqal_variable_type type,unsigned char *name,rasqal_literal *value);
Constructor - Create a new variable and add it to the variables table
The name and value become owned by the rasqal_variable structure
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rasqal_variables_table to associate the variable with |
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variable type defined by enumeration rasqal_variable_type |
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variable name |
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variable rasqal_literal value (or NULL) |
Returns : |
a new rasqal_variable or NULL on failure. |