7bd45f8714
Reviewers: mferencevic, ipaljak Reviewed By: mferencevic Subscribers: pullbot Differential Revision: https://phabricator.memgraph.io/D2203
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
#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(
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"Can't compare value of type {} to value of type {}.", a.type(),
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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(
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"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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} // namespace query
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