[Tile-serving] [openstreetmap/osm2pgsql] New dependency manager (#1168)

[Jochen Topf]

@joto commented on this pull request.



> + * This base class doesn't actually do the dependency management but is a
+ * dummy for cases where no dependency management is needed. See the
+ * full_dependency_manager_t class for the real dependency manager.
+ */
+class dependency_manager_t
+{
+public:
+    virtual ~dependency_manager_t() = default;
+
+    /**
+     * Mark a node as changed to trigger the propagation of this change to
+     * ways and relations.
+     *
+     * This has to be called *after* the object was stored in the object store.
+     */
+    virtual void node_changed(osmid_t) {};

fixed

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