C++ (Cpp) hashJsQuery示例

示例#1

文件： jsquery_op.c 项目： niquola/fhir_cases_for_jsonp

Datum
jsquery_hash(PG_FUNCTION_ARGS)
{
	JsQuery		*jq = PG_GETARG_JSQUERY(0);
	pg_crc32	res;

	INIT_CRC32(res);
	hashJsQuery(VARDATA(jq), 0, &res);
	FIN_CRC32(res);

	PG_FREE_IF_COPY(jq, 0);

	PG_RETURN_INT32(res);
}

示例#2

文件： jsquery_op.c 项目： kaplun/jsquery

Datum
jsquery_hash(PG_FUNCTION_ARGS)
{
	JsQuery			*jq = PG_GETARG_JSQUERY(0);
	JsQueryItem		v;
	pg_crc32		res;

	INIT_CRC32(res);
	jsqInit(&v, jq);
	hashJsQuery(&v, &res);
	FIN_CRC32(res);

	PG_FREE_IF_COPY(jq, 0);

	PG_RETURN_INT32(res);
}

示例#3

文件： jsquery_op.c 项目： kaplun/jsquery

static void
hashJsQuery(JsQueryItem *v, pg_crc32 *crc)
{
	JsQueryItem	elem;

	check_stack_depth();

	COMP_CRC32(*crc, &v->type, sizeof(v->type));

	switch(v->type)
	{
		case jqiNull:
			COMP_CRC32(*crc, "null", 5);
			break;
		case jqiKey:
		case jqiString:
			{
				int32	len;
				char	*s;

				s = jsqGetString(v, &len);

				if (v->type == jqiKey)
					len++; /* include trailing '\0' */
				COMP_CRC32(*crc, s, len);
			}
			break;
		case jqiNumeric:
			*crc ^= (pg_crc32)DatumGetInt32(DirectFunctionCall1(
												hash_numeric,
												PointerGetDatum(jsqGetNumeric(v))));
			break;
		case jqiBool:
			{
				bool	b = jsqGetBool(v);

				COMP_CRC32(*crc, &b, 1);
			}
			break;
		case jqiArray:
			COMP_CRC32(*crc, &v->array.nelems, sizeof(v->array.nelems));
			while(jsqIterateArray(v, &elem))
				hashJsQuery(&elem, crc);
			break;
		case jqiAnd:
		case jqiOr:
			jsqGetLeftArg(v, &elem);
			hashJsQuery(&elem, crc);
			jsqGetRightArg(v, &elem);
			hashJsQuery(&elem, crc);
			break;
		case jqiNot:
		case jqiEqual:
		case jqiIn:
		case jqiLess:
		case jqiGreater:
		case jqiLessOrEqual:
		case jqiGreaterOrEqual:
		case jqiContains:
		case jqiContained:
		case jqiOverlap:
			jsqGetArg(v, &elem);
			hashJsQuery(&elem, crc);
			break;
		case jqiCurrent:
		case jqiLength:
		case jqiAny:
		case jqiAnyArray:
		case jqiAnyKey:
		case jqiAll:
		case jqiAllArray:
		case jqiAllKey:
			break;
		default:
			elog(ERROR, "Unknown JsQueryItem type: %d", v->type);
	}
}

示例#4

文件： jsquery_op.c 项目： niquola/fhir_cases_for_jsonp

static void
hashJsQuery(char *base, int32 pos, pg_crc32 *crc)
{
	int32	type;
	int32	nextPos;

	check_stack_depth();

	pos = readJsQueryHeader(base, pos, &type, &nextPos);

	COMP_CRC32(*crc, &type, sizeof(type));

	switch(type)
	{
		case jqiNull:
			COMP_CRC32(*crc, "null", 5);
			break;
		case jqiKey:
		case jqiString:
			{
				int32	len;

				read_int32(len, base, pos);

				if (type == jqiKey)
					len++; /* include trailing '\0' */
				COMP_CRC32(*crc, base + pos, len);
			}
			break;
		case jqiNumeric:
			*crc ^= (pg_crc32)DatumGetInt32(DirectFunctionCall1(
												hash_numeric,
												PointerGetDatum((Numeric)(base + pos))));
			break;
		case jqiBool:
			{
				bool	v;

				read_byte(v, base, pos);

				COMP_CRC32(*crc, &v, 1);
			}
			break;
		case jqiArray:
			{
				int32	i, nelems, *arrayPos;

				read_int32(nelems, base, pos);
				arrayPos = (int32*)(base + pos);

				COMP_CRC32(*crc, &nelems, sizeof(nelems));

				for(i=0; i<nelems; i++)
					hashJsQuery(base, arrayPos[i], crc);
			}
			break;
		case jqiAnd:
		case jqiOr:
			{
				int32 left, right;

				read_int32(left, base, pos);
				read_int32(right, base, pos);

				hashJsQuery(base, left, crc);
				hashJsQuery(base, right, crc);
			}
			break;
		case jqiNot:
		case jqiEqual:
		case jqiIn:
		case jqiLess:
		case jqiGreater:
		case jqiLessOrEqual:
		case jqiGreaterOrEqual:
		case jqiContains:
		case jqiContained:
		case jqiOverlap:
			{
				int32 arg;

				read_int32(arg, base, pos);
				hashJsQuery(base, arg, crc);
			}
			break;
		case jqiAny:
		case jqiAnyArray:
			break;
		default:
			elog(ERROR, "Unknown JsQueryItem type: %d", type);
	}
}