Type Type_getCoerceIn(Type self, Type other)
{
Oid funcId;
Type coerce;
Oid fromOid = other->typeId;
Oid toOid = self->typeId;
if(self->inCoercions != 0)
{
coerce = HashMap_getByOid(self->inCoercions, fromOid);
if(coerce != 0)
return coerce;
}
if (!find_coercion_pathway(toOid, fromOid, COERCION_EXPLICIT, &funcId))
{
elog(ERROR, "no conversion function from %s to %s",
format_type_be(fromOid),
format_type_be(toOid));
}
if(funcId == InvalidOid)
/*
* Binary compatible type. No need for a special coercer
*/
return self;
if(self->inCoercions == 0)
self->inCoercions = HashMap_create(7, GetMemoryChunkContext(self));
coerce = Coerce_createIn(self, other, funcId);
HashMap_putByOid(self->inCoercions, fromOid, coerce);
return coerce;
}
Function Function_getFunction(PG_FUNCTION_ARGS)
{
Oid funcOid = fcinfo->flinfo->fn_oid;
Function func = (Function)HashMap_getByOid(s_funcMap, funcOid);
if(func == 0)
{
func = Function_create(fcinfo);
HashMap_putByOid(s_funcMap, funcOid, func);
}
return func;
}
/*
* Register this type.
*/
static void _registerType(Oid typeId, const char* javaTypeName, Type type, TypeObtainer obtainer)
{
CacheEntry ce = (CacheEntry)MemoryContextAlloc(TopMemoryContext, sizeof(CacheEntryData));
ce->typeId = typeId;
ce->type = type;
ce->obtainer = obtainer;
if(javaTypeName != 0)
HashMap_putByString(s_obtainerByJavaName, javaTypeName, ce);
if(typeId != InvalidOid && HashMap_getByOid(s_obtainerByOid, typeId) == 0)
HashMap_putByOid(s_obtainerByOid, typeId, ce);
}
void Type_cacheByOid(Oid typeId, Type type)
{
HashMap_putByOid(s_typeByOid, typeId, type);
}
