store_lookup: Introduce conditional based attribute matchers.

[sysdb.git] / src / include / core / store.h

diff --git a/src/include/core/store.h b/src/include/core/store.h
index 81745fa7269df5e7a218a3e9488bd32aea004857..ecaf21d0bbd6b974483290a94dce38916dd285c4 100644 (file)
--- a/src/include/core/store.h
+++ b/src/include/core/store.h
@@ -141,6 +141,26 @@ int
 sdb_store_service(const char *hostname, const char *name,
                sdb_time_t last_update);
 
+/*
+ * Conditionals may be used to lookup hosts from the store based on a
+ * conditional expression.
+ *
+ * A conditional object inherits from sdb_object_t and, thus, may safely be
+ * cast to a generic object.
+ */
+struct sdb_store_cond;
+typedef struct sdb_store_cond sdb_store_cond_t;
+#define SDB_STORE_COND(obj) ((sdb_store_cond_t *)(obj))
+
+/*
+ * sdb_store_attr_cond:
+ * Creates a conditional based on attribute values. The value of stored
+ * attributes is compared against the specified value. See sdb_data_cmp for
+ * details about the comparison.
+ */
+sdb_store_cond_t *
+sdb_store_attr_cond(const char *name, const sdb_data_t *value);
+
 /*
  * Store matchers may be used to lookup hosts from the store based on their
  * various attributes. Service and attribute matchers are applied to a host's
@@ -172,6 +192,25 @@ sdb_store_name_matcher(int type, const char *name, _Bool re);
 sdb_store_matcher_t *
 sdb_store_attr_matcher(const char *name, const char *value, _Bool re);
 
+/*
+ * sdb_store_lt_matcher, sdb_store_le_matcher, sdb_store_eq_matcher,
+ * sdb_store_ge_matcher, sdb_store_gt_matcher:
+ * Creates a matcher based on a conditional. The matcher matches objects for
+ * which the conditional evaluates the object to compare less than, less or
+ * equal, equal, greater or equal, or greater than the conditional's value
+ * repsectively.
+ */
+sdb_store_matcher_t *
+sdb_store_lt_matcher(sdb_store_cond_t *cond);
+sdb_store_matcher_t *
+sdb_store_le_matcher(sdb_store_cond_t *cond);
+sdb_store_matcher_t *
+sdb_store_eq_matcher(sdb_store_cond_t *cond);
+sdb_store_matcher_t *
+sdb_store_ge_matcher(sdb_store_cond_t *cond);
+sdb_store_matcher_t *
+sdb_store_gt_matcher(sdb_store_cond_t *cond);
+
 /*
  * sdb_store_matcher_parse_cmp:
  * Parse a simple compare expression (<obj_type>.<attr> <op> <value>).