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// =============================================================== //
// //
// File : ad_hcb.h //
// Purpose : hierarchical callbacks //
// //
// Coded by Ralf Westram (coder@reallysoft.de) in January 2014 //
// Institute of Microbiology (Technical University Munich) //
// http://www.arb-home.de/ //
// //
// =============================================================== //
#ifndef AD_HCB_H
#define AD_HCB_H
#ifndef ARBDB_BASE_H
#include "arbdb_base.h"
#endif
#ifndef GB_LOCAL_H
#include "gb_local.h"
#endif
#ifndef GB_KEY_H
#include "gb_key.h"
#endif
// --------------------------------
// hierarchical callbacks
/*! Stores path to a specific location in DB hierarchy as list of GBQUARKs
*/
class gb_hierarchy_location {
static const int MAX_HIERARCHY_DEPTH = 10; // no real limit, just avoids dynamic allocation
GBQUARK quark[MAX_HIERARCHY_DEPTH];
public:
gb_hierarchy_location(GBDATA *gbd) {
for (int offset = 0; gbd; ++offset) {
gb_assert(offset<MAX_HIERARCHY_DEPTH); // increase MAX_HIERARCHY_DEPTH (or use dynamic mem)
quark[offset] = GB_KEY_QUARK(gbd);
if (!quark[offset]) return;
gbd = gbd->get_father();
}
gb_assert(0); // did not reach DB-root (invalid entry?)
}
bool matches(GBDATA *gbd) const {
//! return true if 'gbd' is at 'this' hierarchy location
for (int offset = 0; gbd; ++offset) {
GBQUARK q = GB_KEY_QUARK(gbd);
if (!quark[offset]) return !q;
if (q != quark[offset]) return false;
gbd = gbd->get_father();
}
gb_assert(0);
return false;
}
};
class gb_hierarchy_callback : public gb_callback {
gb_hierarchy_location loc;
public:
gb_hierarchy_callback(const TypedDatabaseCallback& spec_, GBDATA *gbd_representative)
: gb_callback(spec_),
loc(gbd_representative)
{}
bool triggered_by(GBDATA *gbd) const { return loc.matches(gbd); }
};
struct gb_hierarchy_callback_list : public CallbackList<gb_hierarchy_callback> {
// need forward decl for gb_hierarchy_callback_list, i.e. cant use a simple typedef here
};
#else
#error ad_hcb.h included twice
#endif // AD_HCB_H
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