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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Validator; /** * Stores the validator's state during validation. * * For example, let's validate the following object graph: * * <pre> * (Person)---($firstName: string) * \ * ($address: Address)---($street: string) * </pre> * * We validate the <tt>Person</tt> instance, which becomes the "root" of the * validation run (see {@link getRoot}). The state of the context after the * first step will be like this: * * <pre> * (Person)---($firstName: string) * ^ \ * ($address: Address)---($street: string) * </pre> * * The validator is stopped at the <tt>Person</tt> node, both the root and the * value (see {@link getValue}) of the context point to the <tt>Person</tt> * instance. The property path is empty at this point (see {@link getPropertyPath}). * The metadata of the context is the metadata of the <tt>Person</tt> node * (see {@link getMetadata}). * * After advancing to the property <tt>$firstName</tt> of the <tt>Person</tt> * instance, the state of the context looks like this: * * <pre> * (Person)---($firstName: string) * \ ^ * ($address: Address)---($street: string) * </pre> * * The validator is stopped at the property <tt>$firstName</tt>. The root still * points to the <tt>Person</tt> instance, because this is where the validation * started. The property path is now "firstName" and the current value is the * value of that property. * * After advancing to the <tt>$address</tt> property and then to the * <tt>$street</tt> property of the <tt>Address</tt> instance, the context state * looks like this: * * <pre> * (Person)---($firstName: string) * \ * ($address: Address)---($street: string) * ^ * </pre> * * The validator is stopped at the property <tt>$street</tt>. The root still * points to the <tt>Person</tt> instance, but the property path is now * "address.street" and the validated value is the value of that property. * * Apart from the root, the property path and the currently validated value, * the execution context also knows the metadata of the current node (see * {@link getMetadata}) which for example returns a {@link Mapping\PropertyMetadata} * or a {@link Mapping\ClassMetadata} object. he context also contains the * validation group that is currently being validated (see {@link getGroup}) and * the violations that happened up until now (see {@link getViolations}). * * Apart from reading the execution context, you can also use * {@link addViolation} or {@link addViolationAt} to add new violations and * {@link validate} or {@link validateValue} to validate values that the * validator otherwise would not reach. * * @author Bernhard Schussek <bschussek@gmail.com> * * @api */ interface ExecutionContextInterface { /** * Adds a violation at the current node of the validation graph. * * @param string $message The error message. * @param array $params The parameters substituted in the error message. * @param mixed $invalidValue The invalid, validated value. * @param integer|null $pluralization The number to use to pluralize of the message. * @param integer|null $code The violation code. * * @api */ public function addViolation($message, array $params = array(), $invalidValue = null, $pluralization = null, $code = null); /** * Adds a violation at the validation graph node with the given property * path relative to the current property path. * * @param string $subPath The relative property path for the violation. * @param string $message The error message. * @param array $params The parameters substituted in the error message. * @param mixed $invalidValue The invalid, validated value. * @param integer|null $pluralization The number to use to pluralize of the message. * @param integer|null $code The violation code. * * @api */ public function addViolationAt($subPath, $message, array $params = array(), $invalidValue = null, $pluralization = null, $code = null); /** * Validates the given value within the scope of the current validation. * * The value may be any value recognized by the used metadata factory * (see {@link MetadataFactoryInterface::getMetadata}), or an array or a * traversable object of such values. * * Usually you validate a value that is not the current node of the * execution context. For this case, you can pass the {@link $subPath} * argument which is appended to the current property path when a violation * is created. For example, take the following object graph: * * <pre> * (Person)---($address: Address)---($phoneNumber: PhoneNumber) * ^ * </pre> * * When the execution context stops at the <tt>Person</tt> instance, the * property path is "address". When you validate the <tt>PhoneNumber</tt> * instance now, pass "phoneNumber" as sub path to correct the property path * to "address.phoneNumber": * * <pre> * $context->validate($address->phoneNumber, 'phoneNumber'); * </pre> * * Any violations generated during the validation will be added to the * violation list that you can access with {@link getViolations}. * * @param mixed $value The value to validate. * @param string $subPath The path to append to the context's property path. * @param null|string|string[] $groups The groups to validate in. If you don't pass any * groups here, the current group of the context * will be used. * @param Boolean $traverse Whether to traverse the value if it is an array * or an instance of <tt>\Traversable</tt>. * @param Boolean $deep Whether to traverse the value recursively if * it is a collection of collections. */ public function validate($value, $subPath = '', $groups = null, $traverse = false, $deep = false); /** * Validates a value against a constraint. * * Use the parameter <tt>$subPath</tt> to adapt the property path for the * validated value. For example, take the following object graph: * * <pre> * (Person)---($address: Address)---($street: string) * ^ * </pre> * * When the validator validates the <tt>Address</tt> instance, the * property path stored in the execution context is "address". When you * manually validate the property <tt>$street</tt> now, pass the sub path * "street" to adapt the full property path to "address.street": * * <pre> * $context->validate($address->street, new NotNull(), 'street'); * </pre> * * @param mixed $value The value to validate. * @param Constraint|Constraint[] $constraints The constraint(s) to validate against. * @param string $subPath The path to append to the context's property path. * @param null|string|string[] $groups The groups to validate in. If you don't pass any * groups here, the current group of the context * will be used. */ public function validateValue($value, $constraints, $subPath = '', $groups = null); /** * Returns the violations generated by the validator so far. * * @return ConstraintViolationListInterface The constraint violation list. * * @api */ public function getViolations(); /** * Returns the value at which validation was started in the object graph. * * The validator, when given an object, traverses the properties and * related objects and their properties. The root of the validation is the * object from which the traversal started. * * The current value is returned by {@link getValue}. * * @return mixed The root value of the validation. */ public function getRoot(); /** * Returns the value that the validator is currently validating. * * If you want to retrieve the object that was originally passed to the * validator, use {@link getRoot}. * * @return mixed The currently validated value. */ public function getValue(); /** * Returns the metadata for the currently validated value. * * With the core implementation, this method returns a * {@link Mapping\ClassMetadata} instance if the current value is an object, * a {@link Mapping\PropertyMetadata} instance if the current value is * the value of a property and a {@link Mapping\GetterMetadata} instance if * the validated value is the result of a getter method. * * If the validated value is neither of these, for example if the validator * has been called with a plain value and constraint, this method returns * null. * * @return MetadataInterface|null The metadata of the currently validated * value. */ public function getMetadata(); /** * Returns the used metadata factory. * * @return MetadataFactoryInterface The metadata factory. */ public function getMetadataFactory(); /** * Returns the validation group that is currently being validated. * * @return string The current validation group. */ public function getGroup(); /** * Returns the class name of the current node. * * If the metadata of the current node does not implement * {@link ClassBasedInterface} or if no metadata is available for the * current node, this method returns null. * * @return string|null The class name or null, if no class name could be found. */ public function getClassName(); /** * Returns the property name of the current node. * * If the metadata of the current node does not implement * {@link PropertyMetadataInterface} or if no metadata is available for the * current node, this method returns null. * * @return string|null The property name or null, if no property name could be found. */ public function getPropertyName(); /** * Returns the property path to the value that the validator is currently * validating. * * For example, take the following object graph: * * <pre> * (Person)---($address: Address)---($street: string) * </pre> * * When the <tt>Person</tt> instance is passed to the validator, the * property path is initially empty. When the <tt>$address</tt> property * of that person is validated, the property path is "address". When * the <tt>$street</tt> property of the related <tt>Address</tt> instance * is validated, the property path is "address.street". * * Properties of objects are prefixed with a dot in the property path. * Indices of arrays or objects implementing the {@link \ArrayAccess} * interface are enclosed in brackets. For example, if the property in * the previous example is <tt>$addresses</tt> and contains an array * of <tt>Address</tt> instance, the property path generated for the * <tt>$street</tt> property of one of these addresses is for example * "addresses[0].street". * * @param string $subPath Optional. The suffix appended to the current * property path. * * @return string The current property path. The result may be an empty * string if the validator is currently validating the * root value of the validation graph. */ public function getPropertyPath($subPath = ''); }