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<?php
/*
* This file is part of the JsonSchema package.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace JsonSchema\Constraints;
use JsonSchema\Entity\JsonPointer;
use JsonSchema\Exception\InvalidArgumentException;
use JsonSchema\Exception\InvalidSchemaException;
use JsonSchema\Exception\RuntimeException;
use JsonSchema\Validator;
/**
* The SchemaConstraint Constraints, validates an element against a given schema
*
* @author Robert Schönthal <seroscho@googlemail.com>
* @author Bruno Prieto Reis <bruno.p.reis@gmail.com>
*/
class SchemaConstraint extends Constraint
{
const DEFAULT_SCHEMA_SPEC = 'http://json-schema.org/draft-04/schema#';
/**
* {@inheritdoc}
*/
public function check(&$element, $schema = null, JsonPointer $path = null, $i = null)
{
if ($schema !== null) {
// passed schema
$validationSchema = $schema;
} elseif ($this->getTypeCheck()->propertyExists($element, $this->inlineSchemaProperty)) {
// inline schema
$validationSchema = $this->getTypeCheck()->propertyGet($element, $this->inlineSchemaProperty);
} else {
throw new InvalidArgumentException('no schema found to verify against');
}
// cast array schemas to object
if (is_array($validationSchema)) {
$validationSchema = BaseConstraint::arrayToObjectRecursive($validationSchema);
}
// validate schema against whatever is defined in $validationSchema->$schema. If no
// schema is defined, assume self::DEFAULT_SCHEMA_SPEC (currently draft-04).
if ($this->factory->getConfig(self::CHECK_MODE_VALIDATE_SCHEMA)) {
if (!$this->getTypeCheck()->isObject($validationSchema)) {
throw new RuntimeException('Cannot validate the schema of a non-object');
}
if ($this->getTypeCheck()->propertyExists($validationSchema, '$schema')) {
$schemaSpec = $this->getTypeCheck()->propertyGet($validationSchema, '$schema');
} else {
$schemaSpec = self::DEFAULT_SCHEMA_SPEC;
}
// get the spec schema
$schemaStorage = $this->factory->getSchemaStorage();
if (!$this->getTypeCheck()->isObject($schemaSpec)) {
$schemaSpec = $schemaStorage->getSchema($schemaSpec);
}
// save error count, config & subtract CHECK_MODE_VALIDATE_SCHEMA
$initialErrorCount = $this->numErrors();
$initialConfig = $this->factory->getConfig();
$initialContext = $this->factory->getErrorContext();
$this->factory->removeConfig(self::CHECK_MODE_VALIDATE_SCHEMA | self::CHECK_MODE_APPLY_DEFAULTS);
$this->factory->addConfig(self::CHECK_MODE_TYPE_CAST);
$this->factory->setErrorContext(Validator::ERROR_SCHEMA_VALIDATION);
// validate schema
try {
$this->check($validationSchema, $schemaSpec);
} catch (\Exception $e) {
if ($this->factory->getConfig(self::CHECK_MODE_EXCEPTIONS)) {
throw new InvalidSchemaException('Schema did not pass validation', 0, $e);
}
}
if ($this->numErrors() > $initialErrorCount) {
$this->addError($path, 'Schema is not valid', 'schema');
}
// restore the initial config
$this->factory->setConfig($initialConfig);
$this->factory->setErrorContext($initialContext);
}
// validate element against $validationSchema
$this->checkUndefined($element, $validationSchema, $path, $i);
}
}