Hawkin
/
arangodb
mirror of https://gitee.com/bigwinds/arangodb
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

more cases for issue #324

This commit is contained in:
Jan Steemann 2013-01-08 00:47:44 +01:00
parent a05edcdccc
commit 992c49d4a1
3 changed files with 28 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arangod/Ahuacatl/ahuacatl-collections.c
View File

@ -270,7 +270,7 @@ TRI_json_t* TRI_GetJsonCollectionHintAql (TRI_aql_collection_hint_t* const hint)
TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE,
result,
"limit",
TRI_CreateNumberJson(TRI_UNKNOWN_MEM_ZONE, (double) hint->_limit._limit));
TRI_CreateNumberJson(TRI_UNKNOWN_MEM_ZONE, (double) hint->_limit._offset + (double) hint->_limit._limit));
}
return result;

34
arangod/Ahuacatl/ahuacatl-optimiser.c
View File

@ -470,16 +470,32 @@ static TRI_aql_node_t* AnnotateLoop (TRI_aql_statement_walker_t* const walker,
// check if we can apply a scope limit and push it into the for loop
if (scope->_limit._status == TRI_AQL_LIMIT_USE) {
// yes!
TRI_aql_for_hint_t* hint = (TRI_aql_for_hint_t*) TRI_AQL_NODE_DATA(node);
TRI_aql_node_t* expression = TRI_AQL_NODE_MEMBER(node, 1);
if (hint != NULL) {
// we'll now modify the hint for the for loop
hint->_limit._offset = scope->_limit._offset;
hint->_limit._limit = scope->_limit._limit;
hint->_limit._status = TRI_AQL_LIMIT_USE;
hint->_limit._hasFilter = scope->_limit._hasFilter;
LOG_TRACE("using limit hint for for loop");
if (expression->_type == TRI_AQL_NODE_COLLECTION && ! scope->_limit._hasFilter) {
// move limit into the COLLECTION node
TRI_aql_collection_hint_t* hint = (TRI_aql_collection_hint_t*) TRI_AQL_NODE_DATA(expression);
if (hint != NULL) {
hint->_limit._offset = scope->_limit._offset;
hint->_limit._limit = scope->_limit._limit;
hint->_limit._status = TRI_AQL_LIMIT_USE;
hint->_limit._hasFilter = scope->_limit._hasFilter;
}
}
else {
// move limit into the FOR node
TRI_aql_for_hint_t* hint = (TRI_aql_for_hint_t*) TRI_AQL_NODE_DATA(node);
if (hint != NULL) {
// we'll now modify the hint for the for loop
hint->_limit._offset = scope->_limit._offset;
hint->_limit._limit = scope->_limit._limit;
hint->_limit._status = TRI_AQL_LIMIT_USE;
hint->_limit._hasFilter = scope->_limit._hasFilter;
LOG_TRACE("using limit hint for for loop");
}
}
// deactive this limit for any further tries

4
js/server/tests/ahuacatl-queries-optimiser-limit.js
View File

@ -192,7 +192,7 @@ function ahuacatlQueryOptimiserLimitTestSuite () {
var explain = explainQuery(query);
assertEqual("for", explain[0].type);
assertEqual(true, explain[0].limit);
assertEqual(test.offset + test.limit, explain[0]["expression"]["extra"]["limit"]);
}
},
@ -357,7 +357,7 @@ function ahuacatlQueryOptimiserLimitTestSuite () {
var explain = explainQuery(query);
assertEqual("for", explain[0].type);
assertEqual(true, explain[0].limit);
assertEqual(test.offset + test.limit, explain[0]["expression"]["extra"]["limit"]);
}
},