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index 476e0e717d9fb5c788651722d5e2a4948dcd696e..1ec1dbb68e702f6c5e4a9722e885f1042494cf38 100644 (file)
--- a/src/core/store_lookup.c
+++ b/src/core/store_lookup.c
return status;
} /* attr_cmp */
+static int
+obj_cmp(sdb_store_obj_t *obj, sdb_store_cond_t *cond,
+ sdb_store_matcher_t __attribute__((unused)) *filter)
+{
+ sdb_data_t obj_value = SDB_DATA_INIT;
+ sdb_data_t value = SDB_DATA_INIT;
+ int status;
+
+ if (sdb_store_get_field(obj, OBJ_C(cond)->field, &obj_value))
+ return INT_MAX;
+ if (sdb_store_expr_eval(OBJ_C(cond)->expr, &value))
+ return INT_MAX;
+
+ if (obj_value.type != value.type) {
+ sdb_data_free_datum(&value);
+ return INT_MAX;
+ }
+ else if (OBJ_C(cond)->field == SDB_FIELD_BACKEND) {
+ /* this implementation is not actually a conditional but rather checks
+ * for equality (or rather, existence) only */
+ size_t i;
+ status = INT_MAX;
+ for (i = 0; i < obj->backends_num; ++i) {
+ if (! strcasecmp(obj->backends[i], value.data.string)) {
+ status = 0;
+ break;
+ }
+ }
+ }
+ else {
+ status = sdb_data_cmp(&obj_value, &value);
+ }
+ sdb_data_free_datum(&value);
+ return status;
+} /* obj_cmp */
+
/*
* matcher implementations
*/
/* destroy = */ attr_cond_destroy,
};
+static int
+obj_cond_init(sdb_object_t *obj, va_list ap)
+{
+ int field = va_arg(ap, int);
+ sdb_store_expr_t *expr = va_arg(ap, sdb_store_expr_t *);
+
+ SDB_STORE_COND(obj)->cmp = obj_cmp;
+
+ OBJ_C(obj)->field = field;
+ OBJ_C(obj)->expr = expr;
+ sdb_object_ref(SDB_OBJ(expr));
+ return 0;
+} /* obj_cond_init */
+
+static void
+obj_cond_destroy(sdb_object_t *obj)
+{
+ sdb_object_deref(SDB_OBJ(OBJ_C(obj)->expr));
+} /* obj_cond_destroy */
+
+static sdb_type_t obj_cond_type = {
+ /* size = */ sizeof(obj_cond_t),
+ /* init = */ obj_cond_init,
+ /* destroy = */ obj_cond_destroy,
+};
+
/*
* private matcher types
*/
static char *
cond_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
{
+ const char *type, *id;
+ sdb_data_t value = SDB_DATA_INIT;
+ char value_str[buflen];
+ sdb_store_expr_t *expr;
+
if (COND_M(m)->cond->cmp == attr_cmp) {
- sdb_data_t value = SDB_DATA_INIT;
- char value_str[buflen];
- if (sdb_store_expr_eval(ATTR_C(COND_M(m)->cond)->expr, &value))
- snprintf(value_str, sizeof(value_str), "ERR");
- else if (sdb_data_format(&value, value_str, sizeof(value_str),
- SDB_SINGLE_QUOTED) < 0)
- snprintf(value_str, sizeof(value_str), "ERR");
- snprintf(buf, buflen, "ATTR[%s]{ %s %s }",
- ATTR_C(COND_M(m)->cond)->name, MATCHER_SYM(m->type),
- value_str);
- sdb_data_free_datum(&value);
+ type = "ATTR";
+ id = ATTR_C(COND_M(m)->cond)->name;
+ expr = ATTR_C(COND_M(m)->cond)->expr;
}
- else
+ else if (COND_M(m)->cond->cmp == obj_cmp) {
+ type = "OBJ";
+ id = SDB_FIELD_TO_NAME(OBJ_C(COND_M(m)->cond)->field);
+ expr = OBJ_C(COND_M(m)->cond)->expr;
+ }
+ else {
snprintf(buf, buflen, "<unknown>");
+ return buf;
+ }
+
+ if (sdb_store_expr_eval(expr, &value))
+ snprintf(value_str, sizeof(value_str), "ERR");
+ else if (sdb_data_format(&value, value_str, sizeof(value_str),
+ SDB_SINGLE_QUOTED) < 0)
+ snprintf(value_str, sizeof(value_str), "ERR");
+ snprintf(buf, buflen, "%s[%s]{ %s %s }", type, id,
+ MATCHER_SYM(m->type), value_str);
+ sdb_data_free_datum(&value);
return buf;
} /* cond_tostring */
name, expr));
} /* sdb_store_attr_cond */
+sdb_store_cond_t *
+sdb_store_obj_cond(int field, sdb_store_expr_t *expr)
+{
+ return SDB_STORE_COND(sdb_object_create("obj-cond", obj_cond_type,
+ field, expr));
+} /* sdb_store_obj_cond */
+
sdb_store_matcher_t *
sdb_store_name_matcher(int type, const char *name, _Bool re)
{
MATCHER_ISNULL, attr_name));
} /* sdb_store_isnull_matcher */
+static sdb_store_matcher_t *
+maybe_inv_matcher(sdb_store_matcher_t *m, _Bool inv)
+{
+ sdb_store_matcher_t *tmp;
+
+ if ((! m) || (! inv))
+ return m;
+
+ tmp = sdb_store_inv_matcher(m);
+ /* pass ownership to the inverse matcher */
+ sdb_object_deref(SDB_OBJ(m));
+ return tmp;
+} /* maybe_inv_matcher */
+
+static int
+parse_cond_op(const char *op,
+ sdb_store_matcher_t *(**matcher)(sdb_store_cond_t *), _Bool *inv)
+{
+ *inv = 0;
+ if (! strcasecmp(op, "<"))
+ *matcher = sdb_store_lt_matcher;
+ else if (! strcasecmp(op, "<="))
+ *matcher = sdb_store_le_matcher;
+ else if (! strcasecmp(op, "="))
+ *matcher = sdb_store_eq_matcher;
+ else if (! strcasecmp(op, ">="))
+ *matcher = sdb_store_ge_matcher;
+ else if (! strcasecmp(op, ">"))
+ *matcher = sdb_store_gt_matcher;
+ else if (! strcasecmp(op, "!=")) {
+ *matcher = sdb_store_eq_matcher;
+ *inv = 1;
+ }
+ else
+ return -1;
+ return 0;
+} /* parse_cond_op */
+
static sdb_store_matcher_t *
parse_attr_cmp(const char *attr, const char *op, sdb_store_expr_t *expr)
{
}
else if (! expr)
return NULL;
- else if (! strcasecmp(op, "<"))
- matcher = sdb_store_lt_matcher;
- else if (! strcasecmp(op, "<="))
- matcher = sdb_store_le_matcher;
- else if (! strcasecmp(op, "="))
- matcher = sdb_store_eq_matcher;
- else if (! strcasecmp(op, ">="))
- matcher = sdb_store_ge_matcher;
- else if (! strcasecmp(op, ">"))
- matcher = sdb_store_gt_matcher;
- else if (! strcasecmp(op, "!=")) {
- matcher = sdb_store_eq_matcher;
- inv = 1;
- }
- else
+ else if (parse_cond_op(op, &matcher, &inv))
return NULL;
cond = sdb_store_attr_cond(attr, expr);
m = matcher(cond);
/* pass ownership to 'm' or destroy in case of an error */
sdb_object_deref(SDB_OBJ(cond));
- if (! m)
- return NULL;
-
- if (inv) {
- sdb_store_matcher_t *tmp;
- tmp = sdb_store_inv_matcher(m);
- /* pass ownership to the inverse matcher */
- sdb_object_deref(SDB_OBJ(m));
- m = tmp;
- }
- return m;
+ return maybe_inv_matcher(m, inv);
} /* parse_attr_cmp */
sdb_store_matcher_t *
m = sdb_store_attr_matcher(attr, value.data.string, re);
sdb_data_free_datum(&value);
+ return maybe_inv_matcher(m, inv);
+} /* sdb_store_matcher_parse_cmp */
- if (! m)
+sdb_store_matcher_t *
+sdb_store_matcher_parse_field_cmp(const char *name, const char *op,
+ sdb_store_expr_t *expr)
+{
+ sdb_store_matcher_t *(*matcher)(sdb_store_cond_t *) = NULL;
+ sdb_store_matcher_t *m;
+ sdb_store_cond_t *cond;
+ _Bool inv = 0;
+
+ int field;
+
+ if (! expr)
return NULL;
- if (inv) {
- sdb_store_matcher_t *tmp;
- tmp = sdb_store_inv_matcher(m);
- /* pass ownership to the inverse matcher */
- sdb_object_deref(SDB_OBJ(m));
- m = tmp;
- }
- return m;
-} /* sdb_store_matcher_parse_cmp */
+ if (! strcasecmp(name, "last_update"))
+ field = SDB_FIELD_LAST_UPDATE;
+ else if (! strcasecmp(name, "age"))
+ field = SDB_FIELD_AGE;
+ else if (! strcasecmp(name, "interval"))
+ field = SDB_FIELD_INTERVAL;
+ else if (! strcasecmp(name, "backend"))
+ field = SDB_FIELD_BACKEND;
+ else
+ return NULL;
+
+ if (parse_cond_op(op, &matcher, &inv))
+ return NULL;
+
+ cond = sdb_store_obj_cond(field, expr);
+ if (! cond)
+ return NULL;
+
+ assert(matcher);
+ m = matcher(cond);
+ /* pass ownership to 'm' or destroy in case of an error */
+ sdb_object_deref(SDB_OBJ(cond));
+ return maybe_inv_matcher(m, inv);
+} /* sdb_store_matcher_parse_field_cmp */
sdb_store_matcher_t *
sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)