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support keypath comparisons for types that support it

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This commit is contained in:
Ari Lazier 2016-04-11 15:03:47 -07:00
parent 8a77099685
commit 3a174161d7
1 changed files with 59 additions and 11 deletions
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70
src/object-store/src/parser/query_builder.cpp
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@ -423,10 +423,67 @@ void do_add_comparison_to_query(Query &query, const Schema &schema, const Object
} }
} }
void do_add_null_comparison_to_query(Query &query, const Schema &schema, const ObjectSchema &object_schema, Predicate::Comparison cmp, const PropertyExpression &expr, Arguments &args) template<typename T>
void do_add_null_comparison_to_query(Query &query, Predicate::Operator op, const PropertyExpression &expr, Arguments &args)
{
static realm::null null = realm::null();
Columns<T> column = expr.table_getter()->template column<T>(expr.prop->table_column);
switch (op) {
case Predicate::Operator::NotEqual:
query.and_query(column != null);
case Predicate::Operator::Equal:
query.and_query(column == null);
break;
default:
throw std::runtime_error("Only 'equal' and 'not equal' operators supported for object comparison.");
}
}
template<>
void do_add_null_comparison_to_query<Binary>(Query &query, Predicate::Operator op, const PropertyExpression &expr, Arguments &args)
{
static realm::null null = realm::null();
Columns<Binary> column = expr.table_getter()->template column<Binary>(expr.prop->table_column);
switch (op) {
case Predicate::Operator::NotEqual:
query.not_equal(expr.prop->table_column, null);
case Predicate::Operator::Equal:
query.equal(expr.prop->table_column, null);
break;
default:
throw std::runtime_error("Only 'equal' and 'not equal' operators supported for object comparison.");
}
}
void do_add_null_comparison_to_query(Query &query, const Schema &schema, const ObjectSchema &object_schema, Predicate::Comparison cmp,
const PropertyExpression &expr, Arguments &args)
{ {
auto type = expr.prop->type; auto type = expr.prop->type;
switch (type) { switch (type) {
case PropertyTypeBool:
do_add_null_comparison_to_query<bool>(query, cmp.op, expr, args);
break;
case PropertyTypeDate:
do_add_null_comparison_to_query<DateTime>(query, cmp.op, expr, args);
break;
case PropertyTypeDouble:
do_add_null_comparison_to_query<Double>(query, cmp.op, expr, args);
break;
case PropertyTypeFloat:
do_add_null_comparison_to_query<Float>(query, cmp.op, expr, args);
break;
case PropertyTypeInt:
do_add_null_comparison_to_query<Int>(query, cmp.op, expr, args);
break;
case PropertyTypeString:
do_add_null_comparison_to_query<String>(query, cmp.op, expr, args);
break;
case PropertyTypeData:
precondition(expr.indexes.empty(), "KeyPath queries not supported for data comparisons.");
do_add_null_comparison_to_query<Binary>(query, cmp.op, expr, args);
break;
case PropertyTypeObject: case PropertyTypeObject:
precondition(expr.indexes.empty(), "KeyPath queries not supported for object comparisons."); precondition(expr.indexes.empty(), "KeyPath queries not supported for object comparisons.");
switch (cmp.op) { switch (cmp.op) {
@ -443,16 +500,7 @@ void do_add_null_comparison_to_query(Query &query, const Schema &schema, const O
throw std::runtime_error((std::string)"Comparing Lists to 'null' is not supported"); throw std::runtime_error((std::string)"Comparing Lists to 'null' is not supported");
break; break;
default: { default: {
switch (cmp.op) { throw std::runtime_error((std::string)"Object type " + string_for_property_type(type) + " not supported");
case Predicate::Operator::NotEqual:
query.not_equal(expr.prop->table_column, realm::null());
break;
case Predicate::Operator::Equal:
query.equal(expr.prop->table_column, realm::null());
break;
default:
throw std::runtime_error("Only 'equal' and 'not equal' operators supported for object comparison.");
}
} }
} }
} }