64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// Copyright 2021 Memgraph Ltd.
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//
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// Use of this software is governed by the Business Source License
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// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
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// License, and you may not use this file except in compliance with the Business Source License.
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//
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// As of the Change Date specified in that file, in accordance with
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// the Business Source License, use of this software will be governed
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// by the Apache License, Version 2.0, included in the file
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// licenses/APL.txt.
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#include "query/common.hpp"
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namespace query {
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namespace impl {
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bool TypedValueCompare(const TypedValue &a, const TypedValue &b) {
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// in ordering null comes after everything else
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// at the same time Null is not less that null
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// first deal with Null < Whatever case
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if (a.IsNull()) return false;
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// now deal with NotNull < Null case
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if (b.IsNull()) return true;
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// comparisons are from this point legal only between values of
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// the same type, or int+float combinations
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if ((a.type() != b.type() && !(a.IsNumeric() && b.IsNumeric())))
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throw QueryRuntimeException("Can't compare value of type {} to value of type {}.", a.type(), b.type());
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switch (a.type()) {
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case TypedValue::Type::Bool:
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return !a.ValueBool() && b.ValueBool();
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case TypedValue::Type::Int:
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if (b.type() == TypedValue::Type::Double)
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return a.ValueInt() < b.ValueDouble();
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else
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return a.ValueInt() < b.ValueInt();
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case TypedValue::Type::Double:
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if (b.type() == TypedValue::Type::Int)
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return a.ValueDouble() < b.ValueInt();
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else
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return a.ValueDouble() < b.ValueDouble();
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case TypedValue::Type::String:
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return a.ValueString() < b.ValueString();
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case TypedValue::Type::List:
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case TypedValue::Type::Map:
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case TypedValue::Type::Vertex:
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case TypedValue::Type::Edge:
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case TypedValue::Type::Path:
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throw QueryRuntimeException("Comparison is not defined for values of type {}.", a.type());
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default:
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LOG_FATAL("Unhandled comparison for types");
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}
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}
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} // namespace impl
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int64_t QueryTimestamp() {
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return std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::system_clock::now().time_since_epoch())
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.count();
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}
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} // namespace query
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