1 ////////////////////////////////////////////////////////////////////////////
3 // Copyright 2015 Realm Inc.
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
17 ////////////////////////////////////////////////////////////////////////////
19 #include "object_schema.hpp"
21 #include "feature_checks.hpp"
22 #include "object_store.hpp"
23 #include "property.hpp"
27 #include <realm/data_type.hpp>
28 #include <realm/descriptor.hpp>
29 #include <realm/group.hpp>
30 #include <realm/table.hpp>
32 using namespace realm;
34 ObjectSchema::ObjectSchema() = default;
35 ObjectSchema::~ObjectSchema() = default;
37 ObjectSchema::ObjectSchema(std::string name, std::initializer_list<Property> persisted_properties)
38 : ObjectSchema(std::move(name), persisted_properties, {})
42 ObjectSchema::ObjectSchema(std::string name, std::initializer_list<Property> persisted_properties,
43 std::initializer_list<Property> computed_properties)
44 : name(std::move(name))
45 , persisted_properties(persisted_properties)
46 , computed_properties(computed_properties)
48 for (auto const& prop : persisted_properties) {
49 if (prop.is_primary) {
50 primary_key = prop.name;
56 PropertyType ObjectSchema::from_core_type(Descriptor const& table, size_t col)
58 auto optional = table.is_nullable(col) ? PropertyType::Nullable : PropertyType::Required;
59 switch (table.get_column_type(col)) {
60 case type_Int: return PropertyType::Int | optional;
61 case type_Float: return PropertyType::Float | optional;
62 case type_Double: return PropertyType::Double | optional;
63 case type_Bool: return PropertyType::Bool | optional;
64 case type_String: return PropertyType::String | optional;
65 case type_Binary: return PropertyType::Data | optional;
66 case type_Timestamp: return PropertyType::Date | optional;
67 case type_Mixed: return PropertyType::Any | optional;
68 case type_Link: return PropertyType::Object | PropertyType::Nullable;
69 case type_LinkList: return PropertyType::Object | PropertyType::Array;
70 case type_Table: return from_core_type(*table.get_subdescriptor(col), 0) | PropertyType::Array;
71 default: REALM_UNREACHABLE();
75 ObjectSchema::ObjectSchema(Group const& group, StringData name, size_t index) : name(name) {
77 if (index < group.size()) {
78 table = group.get_table(index);
81 table = ObjectStore::table_for_object_type(group, name);
84 size_t count = table->get_column_count();
85 persisted_properties.reserve(count);
86 for (size_t col = 0; col < count; col++) {
87 if (auto property = ObjectStore::property_for_column_index(table, col)) {
88 persisted_properties.push_back(std::move(property.value()));
92 primary_key = realm::ObjectStore::get_primary_key_for_object(group, name);
93 set_primary_key_property();
96 Property *ObjectSchema::property_for_name(StringData name) {
97 for (auto& prop : persisted_properties) {
98 if (StringData(prop.name) == name) {
102 for (auto& prop : computed_properties) {
103 if (StringData(prop.name) == name) {
110 const Property *ObjectSchema::property_for_name(StringData name) const {
111 return const_cast<ObjectSchema *>(this)->property_for_name(name);
114 bool ObjectSchema::property_is_computed(Property const& property) const {
115 auto end = computed_properties.end();
116 return std::find(computed_properties.begin(), end, property) != end;
119 void ObjectSchema::set_primary_key_property()
121 if (primary_key.length()) {
122 if (auto primary_key_prop = primary_key_property()) {
123 primary_key_prop->is_primary = true;
128 static void validate_property(Schema const& schema,
129 std::string const& object_name,
130 Property const& prop,
131 Property const** primary,
132 std::vector<ObjectSchemaValidationException>& exceptions)
134 if (prop.type == PropertyType::LinkingObjects && !is_array(prop.type)) {
135 exceptions.emplace_back("Linking Objects property '%1.%2' must be an array.",
136 object_name, prop.name);
140 if (is_nullable(prop.type) && !prop.type_is_nullable()) {
141 exceptions.emplace_back("Property '%1.%2' of type '%3' cannot be nullable.",
142 object_name, prop.name, string_for_property_type(prop.type));
144 else if (prop.type == PropertyType::Object && !is_nullable(prop.type) && !is_array(prop.type)) {
145 exceptions.emplace_back("Property '%1.%2' of type 'object' must be nullable.", object_name, prop.name);
148 // check primary keys
149 if (prop.is_primary) {
150 if (prop.type != PropertyType::Int && prop.type != PropertyType::String) {
151 exceptions.emplace_back("Property '%1.%2' of type '%3' cannot be made the primary key.",
152 object_name, prop.name, string_for_property_type(prop.type));
155 exceptions.emplace_back("Properties '%1' and '%2' are both marked as the primary key of '%3'.",
156 prop.name, (*primary)->name, object_name);
162 if (prop.is_indexed && !prop.type_is_indexable()) {
163 exceptions.emplace_back("Property '%1.%2' of type '%3' cannot be indexed.",
164 object_name, prop.name, string_for_property_type(prop.type));
167 // check that only link properties have object types
168 if (prop.type != PropertyType::LinkingObjects && !prop.link_origin_property_name.empty()) {
169 exceptions.emplace_back("Property '%1.%2' of type '%3' cannot have an origin property name.",
170 object_name, prop.name, string_for_property_type(prop.type));
172 else if (prop.type == PropertyType::LinkingObjects && prop.link_origin_property_name.empty()) {
173 exceptions.emplace_back("Property '%1.%2' of type '%3' must have an origin property name.",
174 object_name, prop.name, string_for_property_type(prop.type));
177 if (prop.type != PropertyType::Object && prop.type != PropertyType::LinkingObjects) {
178 if (!prop.object_type.empty()) {
179 exceptions.emplace_back("Property '%1.%2' of type '%3' cannot have an object type.",
180 object_name, prop.name, prop.type_string());
186 // check that the object_type is valid for link properties
187 auto it = schema.find(prop.object_type);
188 if (it == schema.end()) {
189 exceptions.emplace_back("Property '%1.%2' of type '%3' has unknown object type '%4'",
190 object_name, prop.name, string_for_property_type(prop.type), prop.object_type);
193 if (prop.type != PropertyType::LinkingObjects) {
197 const Property *origin_property = it->property_for_name(prop.link_origin_property_name);
198 if (!origin_property) {
199 exceptions.emplace_back("Property '%1.%2' declared as origin of linking objects property '%3.%4' does not exist",
200 prop.object_type, prop.link_origin_property_name,
201 object_name, prop.name);
203 else if (origin_property->type != PropertyType::Object) {
204 exceptions.emplace_back("Property '%1.%2' declared as origin of linking objects property '%3.%4' is not a link",
205 prop.object_type, prop.link_origin_property_name,
206 object_name, prop.name);
208 else if (origin_property->object_type != object_name) {
209 exceptions.emplace_back("Property '%1.%2' declared as origin of linking objects property '%3.%4' links to type '%5'",
210 prop.object_type, prop.link_origin_property_name,
211 object_name, prop.name, origin_property->object_type);
215 void ObjectSchema::validate(Schema const& schema, std::vector<ObjectSchemaValidationException>& exceptions) const
217 const Property *primary = nullptr;
218 for (auto const& prop : persisted_properties) {
219 validate_property(schema, name, prop, &primary, exceptions);
221 for (auto const& prop : computed_properties) {
222 validate_property(schema, name, prop, &primary, exceptions);
225 if (!primary_key.empty() && !primary && !primary_key_property()) {
226 exceptions.emplace_back("Specified primary key '%1.%2' does not exist.", name, primary_key);
231 bool operator==(ObjectSchema const& a, ObjectSchema const& b)
233 return std::tie(a.name, a.primary_key, a.persisted_properties, a.computed_properties)
234 == std::tie(b.name, b.primary_key, b.persisted_properties, b.computed_properties);