X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=ovsdb%2FSPECS;h=951c0976e54d46265e1705d67d14bee812f2e67b;hb=8628b0b71d1cf5b3bd7425e50f0aa1435aa38804;hp=d413c284510f66d29ad77b2860ba7a19bc63a87e;hpb=42a49b96013c6a149ad0bdd9799b22db59630ae7;p=openvswitch

diff --git a/ovsdb/SPECS b/ovsdb/SPECS
index d413c284..951c0976 100644
--- a/ovsdb/SPECS
+++ b/ovsdb/SPECS
@@ -132,6 +132,7 @@ is represented by <database-schema>, as described below.
         "columns": {<id>: <column-schema>, ...}   required
         "maxRows": <integer>                      optional
         "isRoot": <boolean>                       optional
+        "indexes": [<column-set>*]                optional
 
     The value of "columns" is a JSON object whose names are column
     names and whose values are <column-schema>s.
@@ -176,6 +177,15 @@ is represented by <database-schema>, as described below.
     enforced after unreferenced rows are deleted from tables with a
     false "isRoot".
 
+    If "indexes" is specified, it must be an array of zero or more
+    <column-set>s.  A <column-set> is an array of one or more strings,
+    each of which names a column.  Each <column-set> is a set of
+    columns whose values, taken together within any given row, must be
+    unique within the table.  This is a "deferred" constraint,
+    enforced only at transaction commit time, after unreferenced rows
+    are deleted and dangling weak references are removed.  Ephemeral
+    columns may not be part of indexes.
+
 <column-schema>
 
     A JSON object with the following members:
@@ -432,6 +442,16 @@ include at least the following:
         The number of rows in a table exceeds the maximum number
         permitted by the table's "maxRows" value (see <table-schema>).
 
+    "error": "constraint violation"
+
+        Two or more rows in a table had the same values in the columns
+        that comprise an index.
+
+    "error": "resources exhausted"
+    "error": "I/O error"
+
+        As described in the definition of <error> above.
+
 If "params" contains one or more "wait" operations, then the
 transaction may take an arbitrary amount of time to complete.  The
 database implementation must be capable of accepting, executing, and