c-harris /
ODataMetadata
| Total Complexity | 62 |
| Total Lines | 265 |
| 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 $otherType): bool |
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| 75 | { |
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| 76 | if ($thisType === $otherType) { |
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| 77 | return true; |
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| 78 | } |
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| 79 | |||
| 80 | if (!$thisType->getTypeKind()->equals($otherType->getTypeKind())) { |
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| 81 | return false; |
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| 82 | } |
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| 83 | |||
| 84 | if (!$thisType->getTypeKind()->isAnyOf( |
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| 85 | TypeKind::Primitive(), |
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| 86 | TypeKind::Complex(), |
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| 87 | TypeKind::Entity(), |
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| 88 | TypeKind::Enum(), |
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| 89 | TypeKind::Collection(), |
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| 90 | TypeKind::EntityReference(), |
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| 91 | TypeKind::Row(), |
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| 92 | TypeKind::None() |
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| 93 | )) { |
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| 94 | throw new InvalidOperationException( |
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| 95 | StringConst::UnknownEnumVal_TypeKind($thisType->getTypeKind()->getKey()) |
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|
Bug
introduced
by
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| 96 | ); |
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| 97 | } |
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| 98 | return true; |
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| 99 | } |
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| 100 | |||
| 101 | protected static function isITypeReferenceEquivalentTo(ITypeReference $thisType, ITypeReference $otherType): bool |
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| 102 | { |
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| 103 | if ($thisType === $otherType) { |
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| 104 | return true; |
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| 105 | } |
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| 106 | |||
| 107 | $typeKind = $thisType->TypeKind(); |
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| 108 | if (!$typeKind->equals($otherType->TypeKind())) { |
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| 109 | return false; |
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| 110 | } |
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| 111 | |||
| 112 | if (!$typeKind->isPrimitive()) { |
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| 113 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 114 | self::isEquivalentTo($thisType->getDefinition(), $otherType->getDefinition()); |
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| 115 | } |
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| 116 | return true; |
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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 ( |
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| 150 | !self::isEquivalentTo( |
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| 151 | $thisFunction->getParameters()[$thisTypeKeys[$i]], |
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| 152 | $otherFunction->getParameters()[$otherTypeKeys[$i]] |
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| 153 | ) |
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| 154 | ) { |
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| 155 | return false; |
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| 156 | } |
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| 157 | } |
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| 158 | |||
| 159 | return true; |
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| 160 | } |
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| 161 | |||
| 162 | /** |
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| 163 | * Returns true if the compared function parameter is semantically equivalent to this function parameter. |
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| 164 | * |
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| 165 | * @param IFunctionParameter $thisParameter reference to the calling object |
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| 166 | * @param IFunctionParameter $otherParameter function parameter being compared to |
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| 167 | * @return bool equivalence of the two function parameters |
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| 168 | */ |
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| 169 | protected static function IsIFunctionParameterEquivalentTo(IFunctionParameter $thisParameter, IFunctionParameter $otherParameter): bool |
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| 170 | { |
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| 171 | if ($thisParameter === $otherParameter) { |
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| 172 | return true; |
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| 173 | } |
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| 174 | |||
| 175 | return $thisParameter->getName() == $otherParameter->getName() && |
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| 176 | $thisParameter->getMode()->equals($otherParameter->getMode()) && |
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| 177 | self::isEquivalentTo($thisParameter->getType(), $otherParameter->getType()); |
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| 178 | } |
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| 179 | |||
| 180 | protected static function isIPrimitiveTypeEquivalentTo(IPrimitiveType $thisType, IPrimitiveType $otherType): bool |
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| 181 | { |
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| 182 | // OdataMetadata creates one-off instances of primitive type definitions that match by name and kind, but have |
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| 183 | // different object refs. So we can't use object ref comparison here like for other ISchemaType objects. |
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| 184 | return $thisType->getPrimitiveKind() === $otherType->getPrimitiveKind() && |
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| 185 | $thisType->FullName() === $otherType->FullName(); |
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| 186 | } |
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| 187 | |||
| 188 | protected static function isISchemaTypeEquivalentTo(ISchemaType $thisType, ISchemaType $otherType): bool |
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| 189 | { |
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| 190 | return $thisType === $otherType; |
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| 191 | } |
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| 192 | |||
| 193 | protected static function isICollectionTypeEquivalentTo(ICollectionType $thisType, ICollectionType $otherType): bool |
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| 194 | { |
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| 195 | return self::isEquivalentTo($thisType->getElementType(), $otherType->getElementType()); |
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| 196 | } |
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| 197 | |||
| 198 | protected static function isIEntityReferenceTypeEquivalentTo(IEntityReferenceType $thisType, IEntityReferenceType $otherType): bool |
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| 199 | { |
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| 200 | return self::isEquivalentTo($thisType->getEntityType(), $otherType->getEntityType()); |
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| 201 | } |
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| 202 | |||
| 203 | protected static function isIRowTypeEquivalentTo(IRowType $thisType, IRowType $otherType): bool |
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| 204 | { |
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| 205 | if (count($thisType->getDeclaredProperties()) != count($otherType->getDeclaredProperties())) { |
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| 206 | return false; |
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| 207 | } |
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| 208 | |||
| 209 | $thisTypeKeys = array_keys($thisType->getDeclaredProperties()); |
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| 210 | $otherTypeKeys = array_keys($otherType->getDeclaredProperties()); |
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| 211 | $keyCount = count($thisTypeKeys); |
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| 212 | for ($i = 0; $i < $keyCount; ++$i) { |
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| 213 | if ( |
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| 214 | !self::isEquivalentTo( |
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| 215 | $thisType->getDeclaredProperties()[$thisTypeKeys[$i]], |
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| 216 | $thisType->getDeclaredProperties()[$otherTypeKeys[$i]] |
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| 217 | ) |
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| 218 | ) { |
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| 219 | return false; |
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| 220 | } |
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| 221 | } |
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| 222 | return true; |
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| 223 | } |
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| 224 | |||
| 225 | protected static function isIStructuralPropertyEquivalentTo(IStructuralProperty $thisProp, IStructuralProperty $otherProp): bool |
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| 226 | { |
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| 227 | if ($thisProp === $otherProp) { |
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| 228 | return true; |
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| 229 | } |
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| 230 | |||
| 231 | return $thisProp->getName() == $otherProp->getName() && |
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| 232 | self::isEquivalentTo($thisProp->getType(), $otherProp->getType()); |
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| 233 | } |
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| 234 | |||
| 235 | |||
| 236 | protected static function isIPrimitiveTypeReferenceEquivalentTo(IPrimitiveTypeReference $thisType, IPrimitiveTypeReference $otherType): bool |
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| 237 | { |
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| 238 | $thisTypePrimitiveKind = $thisType->PrimitiveKind(); |
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| 239 | if (!$thisTypePrimitiveKind->equals($otherType->PrimitiveKind())) { |
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| 240 | return false; |
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| 241 | } |
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| 242 | |||
| 243 | if ( |
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| 244 | $thisTypePrimitiveKind->isAnyOf( |
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| 245 | PrimitiveTypeKind::Binary(), |
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| 246 | PrimitiveTypeKind::Decimal(), |
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| 247 | PrimitiveTypeKind::String(), |
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| 248 | PrimitiveTypeKind::Time(), |
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| 249 | PrimitiveTypeKind::DateTime(), |
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| 250 | PrimitiveTypeKind::DateTimeOffset() |
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| 251 | ) || |
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| 252 | $thisTypePrimitiveKind->IsSpatial()) { |
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| 253 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 254 | self::isEquivalentTo($thisType->getDefinition(), $otherType->getDefinition()); |
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| 255 | } |
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| 256 | return true; |
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| 257 | } |
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| 258 | |||
| 259 | protected static function isIBinaryTypeReferenceEquivalentTo(IBinaryTypeReference $thisType, IBinaryTypeReference $otherType): bool |
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| 260 | { |
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| 261 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 262 | $thisType->isFixedLength() === $otherType->isFixedLength() && |
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| 263 | $thisType->isUnbounded() === $otherType->isUnbounded() && |
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| 264 | $thisType->getMaxLength() === $otherType->getMaxLength(); |
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| 265 | } |
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| 266 | |||
| 267 | protected static function isIDecimalTypeReferenceEquivalentTo(IDecimalTypeReference $thisType, IDecimalTypeReference $otherType): bool |
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| 268 | { |
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| 269 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 270 | $thisType->getPrecision() === $otherType->getPrecision() && |
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| 271 | $thisType->getScale() === $otherType->getScale(); |
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| 272 | } |
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| 273 | |||
| 274 | protected static function isITemporalTypeReferenceEquivalentTo(ITemporalTypeReference $thisType, ITemporalTypeReference $otherType): bool |
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| 279 | } |
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| 280 | |||
| 281 | protected static function isIStringTypeReferenceEquivalentTo(IStringTypeReference $thisType, IStringTypeReference $otherType): bool |
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| 282 | { |
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| 283 | return $thisType->getNullable() === $otherType->getNullable() && |
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| 284 | $thisType->isFixedLength() === $otherType->isFixedLength() && |
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| 285 | $thisType->isUnbounded() === $otherType->isUnbounded() && |
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| 286 | $thisType->getMaxLength() === $otherType->getMaxLength() && |
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| 287 | $thisType->isUnicode() === $otherType->isUnicode() && |
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| 288 | $thisType->getCollation() === $otherType->getCollation(); |
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| 289 | } |
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| 290 | |||
| 291 | protected static function isISpatialTypeReferenceEquivalentTo(ISpatialTypeReference $thisType, ISpatialTypeReference $otherType): bool |
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| 295 | } |
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| 296 | } |
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| 297 |
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