/**
* @param schema we want to partially clone
* @param an array with the position of the dimension we want to *keep*
* @param the total number of dimension we want to keep
* @return a cloned schema with only the dimension whose position are provided, the new position of dimension is there index+1 in provided array, NULL if something wen wrong
* */
PCSCHEMA *
pc_schema_clone_subset( PCSCHEMA *s, uint32_t * dimensions_position_array, uint32_t dimensions_number)
{
int i;
PCDIMENSION* temp_dim;
PCSCHEMA *pcs = pc_schema_new(dimensions_number);
pcs->pcid = s->pcid;
pcs->srid = s->srid;
pcs->compression = s->compression;
//printf("\n for loop \n");
for ( i = 0; i < dimensions_number; i++ )
{
if ( s->dims[dimensions_position_array[i]] )
{
temp_dim = pc_dimension_clone(s->dims[dimensions_position_array[i]]);//cloning the dimension
temp_dim->position=i ; //changing the position so to have continuous dimension position
pc_schema_set_dimension(pcs,temp_dim);
//printf("cloning the dimension %s in new position %d",temp_dim->name,i);
}
}
//the new x_position and y_position should be found according to where X and Y dimension are
//looking for X and Y in dimension, to get the dimension position
pcs->x_position=pc_schema_get_dimension_position_by_name(pcs,"x");
pcs->y_position=pc_schema_get_dimension_position_by_name(pcs,"y");
//pcinfo("updating schema : x_position : %d, y_position : %d",pcs->x_position,pcs->y_position);
pc_schema_calculate_byteoffsets(pcs);
return pcs;
}
PCSCHEMA*
pc_schema_clone(const PCSCHEMA *s)
{
int i;
PCSCHEMA *pcs = pc_schema_new(s->ndims);
pcs->pcid = s->pcid;
pcs->srid = s->srid;
pcs->x_position = s->x_position;
pcs->y_position = s->y_position;
pcs->compression = s->compression;
for ( i = 0; i < pcs->ndims; i++ )
{
if ( s->dims[i] )
{
pc_schema_set_dimension(pcs, pc_dimension_clone(s->dims[i]));
}
}
pc_schema_calculate_byteoffsets(pcs);
return pcs;
}