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Added CXX implementation of SHIFT

This commit is contained in:
Michael Hackstein 2015-11-03 17:36:28 +01:00
parent fb0b5d8093
commit 1957ef668d
3 changed files with 33 additions and 1 deletions
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2
arangod/Aql/Executor.cpp
View File

@ -180,7 +180,7 @@ std::unordered_map<std::string, Function const> const Executor::FunctionNames{
{ "PUSH", Function("PUSH", "AQL_PUSH", "l,.|b", true, true, false, true, false, &Functions::Push) },
{ "APPEND", Function("APPEND", "AQL_APPEND", "l,lz|b", true, true, false, true, true, &Functions::Append) },
{ "POP", Function("POP", "AQL_POP", "l", true, true, false, true, true, &Functions::Pop) },
{ "SHIFT", Function("SHIFT", "AQL_SHIFT", "l", true, true, false, true, true) },
{ "SHIFT", Function("SHIFT", "AQL_SHIFT", "l", true, true, false, true, true, &Functions::Shift) },
{ "UNSHIFT", Function("UNSHIFT", "AQL_UNSHIFT", "l,.|b", true, true, false, true, true, &Functions::Unshift) },
{ "REMOVE_VALUE", Function("REMOVE_VALUE", "AQL_REMOVE_VALUE", "l,.|n", true, true, false, true, true) },
{ "REMOVE_VALUES", Function("REMOVE_VALUES", "AQL_REMOVE_VALUES", "l,lz", true, true, false, true, true) },

31
arangod/Aql/Functions.cpp
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@ -3530,6 +3530,37 @@ AqlValue Functions::Unshift (triagens::aql::Query* query,
return AqlValue(new Json(Json::Null));
}
////////////////////////////////////////////////////////////////////////////////
/// @brief function SHIFT
////////////////////////////////////////////////////////////////////////////////
AqlValue Functions::Shift (triagens::aql::Query* query,
triagens::arango::AqlTransaction* trx,
FunctionParameters const& parameters) {
size_t const n = parameters.size();
if (n != 1) {
THROW_ARANGO_EXCEPTION_PARAMS(TRI_ERROR_QUERY_FUNCTION_ARGUMENT_NUMBER_MISMATCH, "SHIFT", (int) 1, (int) 1);
}
Json list = ExtractFunctionParameter(trx, parameters, 0, false);
if (list.isNull()) {
return AqlValue(new Json(Json::Null));
}
if (list.isArray()) {
if (list.size() == 0) {
return AqlValue(new Json(Json::Array, 0));
}
if (!TRI_DeleteArrayJson(TRI_UNKNOWN_MEM_ZONE, list.json(), 0)) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
}
return AqlValue(new Json(TRI_UNKNOWN_MEM_ZONE, list.copy().steal()));
}
RegisterInvalidArgumentWarning(query, "SHIFT");
return AqlValue(new Json(Json::Null));
}
// -----------------------------------------------------------------------------
// --SECTION-- END-OF-FILE
// -----------------------------------------------------------------------------

1
arangod/Aql/Functions.h
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@ -135,6 +135,7 @@ namespace triagens {
static AqlValue Pop (triagens::aql::Query*, triagens::arango::AqlTransaction*, FunctionParameters const&);
static AqlValue Append (triagens::aql::Query*, triagens::arango::AqlTransaction*, FunctionParameters const&);
static AqlValue Unshift (triagens::aql::Query*, triagens::arango::AqlTransaction*, FunctionParameters const&);
static AqlValue Shift (triagens::aql::Query*, triagens::arango::AqlTransaction*, FunctionParameters const&);
};
}