c-harris /
ODataMetadata
| Total Complexity | 62 |
| Total Lines | 262 |
| Duplicated Lines | 0 % |
| Changes | 2 | ||
| Bugs | 1 | Features | 0 |
Complex classes like EdmElementComparer often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use EdmElementComparer, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 30 | abstract class EdmElementComparer |
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| 31 | { |
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| 32 | /** |
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| 33 | * Returns true if the compared type is semantically equivalent to this type. |
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| 34 | * |
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| 35 | * @param IEdmElement|null $thisType type being compared |
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| 36 | * @param IEdmElement|null $otherType type being compared to |
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| 37 | * @return bool equivalence of the two types |
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| 38 | */ |
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| 39 | public static function isEquivalentTo(?IEdmElement $thisType, ?IEdmElement $otherType): bool |
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| 40 | { |
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| 41 | if (null === $thisType || null === $otherType) { |
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| 42 | return false; |
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| 43 | } |
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| 44 | |||
| 45 | $equivalent = true; |
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| 46 | $interfaces = class_implements($thisType); |
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| 47 | $interfaces = array_filter($interfaces, function ($value) { |
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| 48 | return false !== strpos($value, 'AlgoWeb\\ODataMetadata'); |
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| 49 | }); |
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| 50 | |||
| 51 | foreach ($interfaces as $rawInterface) { |
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| 52 | $bitz = explode('\\', $rawInterface); |
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| 53 | $interface = end($bitz); |
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| 54 | $methodName = 'is' . $interface . 'EquivalentTo'; |
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| 55 | if (!method_exists(self::class, $methodName)) { |
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| 56 | continue; |
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| 57 | } |
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| 58 | if (!in_array($rawInterface, class_implements($otherType))) { |
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| 59 | return false; |
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| 60 | } |
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| 61 | $equivalent &= self::{$methodName}($thisType, $otherType); |
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| 62 | } |
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| 63 | return boolval($equivalent); |
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| 64 | } |
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| 65 | |||
| 66 | /** |
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| 67 | * Returns true if the compared type is semantically equivalent to this type. |
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| 68 | * Schema types (ISchemaType) are compared by their object refs. |
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| 69 | * |
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| 70 | * @param IType $thisType type being compared |
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| 71 | * @param IType $otherType type being compared to |
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| 72 | * @return bool equivalence of the two types |
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| 73 | */ |
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| 74 | protected static function isITypeEquivalentTo(IType $thisType, IType $otherType): bool |
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| 99 | } |
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| 100 | |||
| 101 | protected static function isITypeReferenceEquivalentTo(ITypeReference $thisType, ITypeReference $otherType): bool |
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| 117 | } |
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| 118 | |||
| 119 | /** |
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| 120 | * Returns true if function signatures are semantically equivalent. |
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| 121 | * Signature includes function name (INamedElement) and its parameter types. |
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| 122 | * |
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| 123 | * @param IFunctionBase|null $thisFunction reference to the calling object |
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| 124 | * @param IFunctionBase|null $otherFunction function being compared to |
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| 125 | * @return bool equivalence of signatures of the two functions |
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| 126 | */ |
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| 127 | public static function isFunctionSignatureEquivalentTo(?IFunctionBase $thisFunction, ?IFunctionBase $otherFunction): bool |
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| 128 | { |
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| 129 | if (null === $thisFunction || null === $otherFunction) { |
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| 130 | return false; |
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| 131 | } |
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| 132 | |||
| 133 | if ($thisFunction === $otherFunction) { |
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| 134 | return true; |
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| 135 | } |
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| 136 | |||
| 137 | if ($thisFunction->getName() != $otherFunction->getName()) { |
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| 138 | return false; |
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| 139 | } |
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| 140 | |||
| 141 | if (!self::isEquivalentTo($thisFunction->getReturnType(), $otherFunction->getReturnType())) { |
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| 142 | return false; |
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| 143 | } |
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| 144 | |||
| 145 | $thisTypeKeys = array_keys($thisFunction->getParameters()); |
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| 146 | $otherTypeKeys = array_keys($otherFunction->getParameters()); |
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| 147 | $keyCount = count($thisTypeKeys); |
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| 148 | for ($i = 0; $i < $keyCount; ++$i) { |
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| 149 | if (!self::isEquivalentTo( |
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| 150 | $thisFunction->getParameters()[$thisTypeKeys[$i]], |
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| 151 | $otherFunction->getParameters()[$otherTypeKeys[$i]] |
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| 152 | ) |
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| 153 | ) { |
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| 154 | return false; |
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| 155 | } |
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| 156 | } |
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| 157 | |||
| 158 | return true; |
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| 159 | } |
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| 160 | |||
| 161 | /** |
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| 162 | * Returns true if the compared function parameter is semantically equivalent to this function parameter. |
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| 163 | * |
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| 164 | * @param IFunctionParameter $thisParameter reference to the calling object |
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| 165 | * @param IFunctionParameter $otherParameter function parameter being compared to |
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| 166 | * @return bool equivalence of the two function parameters |
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| 167 | */ |
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| 168 | protected static function IsIFunctionParameterEquivalentTo(IFunctionParameter $thisParameter, IFunctionParameter $otherParameter): bool |
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| 169 | { |
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| 170 | if ($thisParameter === $otherParameter) { |
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| 171 | return true; |
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| 172 | } |
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| 173 | |||
| 174 | return $thisParameter->getName() == $otherParameter->getName() && |
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| 175 | $thisParameter->getMode()->equals($otherParameter->getMode()) && |
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| 176 | self::isEquivalentTo($thisParameter->getType(), $otherParameter->getType()); |
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| 177 | } |
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| 178 | |||
| 179 | protected static function isIPrimitiveTypeEquivalentTo(IPrimitiveType $thisType, IPrimitiveType $otherType): bool |
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| 180 | { |
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| 181 | // OdataMetadata creates one-off instances of primitive type definitions that match by name and kind, but have |
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| 182 | // different object refs. So we can't use object ref comparison here like for other ISchemaType objects. |
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| 183 | return $thisType->getPrimitiveKind() === $otherType->getPrimitiveKind() && |
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| 184 | $thisType->FullName() === $otherType->FullName(); |
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| 185 | } |
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| 186 | |||
| 187 | protected static function isISchemaTypeEquivalentTo(ISchemaType $thisType, ISchemaType $otherType): bool |
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| 188 | { |
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| 189 | return $thisType === $otherType; |
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| 190 | } |
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| 191 | |||
| 192 | protected static function isICollectionTypeEquivalentTo(ICollectionType $thisType, ICollectionType $otherType): bool |
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| 193 | { |
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| 194 | return self::isEquivalentTo($thisType->getElementType(), $otherType->getElementType()); |
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| 195 | } |
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| 196 | |||
| 197 | protected static function isIEntityReferenceTypeEquivalentTo(IEntityReferenceType $thisType, IEntityReferenceType $otherType): bool |
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| 198 | { |
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| 199 | return self::isEquivalentTo($thisType->getEntityType(), $otherType->getEntityType()); |
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| 200 | } |
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| 201 | |||
| 202 | protected static function isIRowTypeEquivalentTo(IRowType $thisType, IRowType $otherType): bool |
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| 203 | { |
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| 204 | if (count($thisType->getDeclaredProperties()) != count($otherType->getDeclaredProperties())) { |
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| 205 | return false; |
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| 206 | } |
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| 207 | |||
| 208 | $thisTypeKeys = array_keys($thisType->getDeclaredProperties()); |
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| 209 | $otherTypeKeys = array_keys($otherType->getDeclaredProperties()); |
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| 210 | $keyCount = count($thisTypeKeys); |
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| 211 | for ($i = 0; $i < $keyCount; ++$i) { |
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| 212 | if (!self::isEquivalentTo( |
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| 213 | $thisType->getDeclaredProperties()[$thisTypeKeys[$i]], |
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| 214 | $thisType->getDeclaredProperties()[$otherTypeKeys[$i]] |
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| 215 | ) |
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| 216 | ) { |
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| 217 | return false; |
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| 218 | } |
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| 219 | } |
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| 220 | return true; |
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| 221 | } |
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| 222 | |||
| 223 | protected static function isIStructuralPropertyEquivalentTo(IStructuralProperty $thisProp, IStructuralProperty $otherProp): bool |
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| 224 | { |
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| 225 | if ($thisProp === $otherProp) { |
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| 226 | return true; |
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| 227 | } |
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| 228 | |||
| 229 | return $thisProp->getName() == $otherProp->getName() && |
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| 230 | self::isEquivalentTo($thisProp->getType(), $otherProp->getType()); |
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| 231 | } |
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| 232 | |||
| 233 | |||
| 234 | protected static function isIPrimitiveTypeReferenceEquivalentTo(IPrimitiveTypeReference $thisType, IPrimitiveTypeReference $otherType): bool |
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| 235 | { |
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| 236 | $thisTypePrimitiveKind = $thisType->PrimitiveKind(); |
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| 237 | if (!$thisTypePrimitiveKind->equals($otherType->PrimitiveKind())) { |
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| 238 | return false; |
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| 239 | } |
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| 240 | |||
| 241 | if ($thisTypePrimitiveKind->isAnyOf( |
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| 242 | PrimitiveTypeKind::Binary(), |
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| 243 | PrimitiveTypeKind::Decimal(), |
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| 244 | PrimitiveTypeKind::String(), |
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| 245 | PrimitiveTypeKind::Time(), |
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| 246 | PrimitiveTypeKind::DateTime(), |
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| 247 | PrimitiveTypeKind::DateTimeOffset() |
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| 248 | ) || |
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| 249 | $thisTypePrimitiveKind->IsSpatial()) { |
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| 250 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 251 | self::isEquivalentTo($thisType->getDefinition(), $otherType->getDefinition()); |
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| 252 | } |
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| 253 | return true; |
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| 254 | } |
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| 255 | |||
| 256 | protected static function isIBinaryTypeReferenceEquivalentTo(IBinaryTypeReference $thisType, IBinaryTypeReference $otherType): bool |
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| 257 | { |
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| 258 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 259 | $thisType->isFixedLength() === $otherType->isFixedLength() && |
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| 260 | $thisType->isUnbounded() === $otherType->isUnbounded() && |
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| 261 | $thisType->getMaxLength() === $otherType->getMaxLength(); |
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| 262 | } |
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| 263 | |||
| 264 | protected static function isIDecimalTypeReferenceEquivalentTo(IDecimalTypeReference $thisType, IDecimalTypeReference $otherType): bool |
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| 265 | { |
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| 266 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 267 | $thisType->getPrecision() === $otherType->getPrecision() && |
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| 268 | $thisType->getScale() === $otherType->getScale(); |
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| 269 | } |
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| 270 | |||
| 271 | protected static function isITemporalTypeReferenceEquivalentTo(ITemporalTypeReference $thisType, ITemporalTypeReference $otherType): bool |
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| 276 | } |
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| 277 | |||
| 278 | protected static function isIStringTypeReferenceEquivalentTo(IStringTypeReference $thisType, IStringTypeReference $otherType): bool |
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| 279 | { |
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| 280 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 281 | $thisType->isFixedLength() === $otherType->isFixedLength() && |
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| 282 | $thisType->isUnbounded() === $otherType->isUnbounded() && |
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| 283 | $thisType->getMaxLength() === $otherType->getMaxLength() && |
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| 284 | $thisType->isUnicode() === $otherType->isUnicode() && |
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| 285 | $thisType->getCollation() === $otherType->getCollation(); |
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| 286 | } |
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| 287 | |||
| 288 | protected static function isISpatialTypeReferenceEquivalentTo(ISpatialTypeReference $thisType, ISpatialTypeReference $otherType): bool |
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| 292 | } |
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| 293 | } |
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| 294 |
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