Rajout de doctrine/orm
[zf2.biz/application_blanche.git] / vendor / doctrine / orm / lib / Doctrine / ORM / Mapping / Driver / XmlDriver.php
diff --git a/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php b/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php
new file mode 100644 (file)
index 0000000..251b719
--- /dev/null
@@ -0,0 +1,713 @@
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Mapping\Driver;
+
+use SimpleXMLElement,
+    Doctrine\Common\Persistence\Mapping\Driver\FileDriver,
+    Doctrine\Common\Persistence\Mapping\ClassMetadata,
+    Doctrine\ORM\Mapping\MappingException;
+
+/**
+ * XmlDriver is a metadata driver that enables mapping through XML files.
+ *
+ * @license    http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @link       www.doctrine-project.org
+ * @since      2.0
+ * @author             Benjamin Eberlei <kontakt@beberlei.de>
+ * @author             Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author      Jonathan H. Wage <jonwage@gmail.com>
+ * @author      Roman Borschel <roman@code-factory.org>
+ */
+class XmlDriver extends FileDriver
+{
+    const DEFAULT_FILE_EXTENSION = '.dcm.xml';
+
+    /**
+     * {@inheritDoc}
+     */
+    public function __construct($locator, $fileExtension = self::DEFAULT_FILE_EXTENSION)
+    {
+        parent::__construct($locator, $fileExtension);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function loadMetadataForClass($className, ClassMetadata $metadata)
+    {
+        /* @var $metadata \Doctrine\ORM\Mapping\ClassMetadataInfo */
+        /* @var $xmlRoot SimpleXMLElement */
+        $xmlRoot = $this->getElement($className);
+
+        if ($xmlRoot->getName() == 'entity') {
+            if (isset($xmlRoot['repository-class'])) {
+                $metadata->setCustomRepositoryClass((string)$xmlRoot['repository-class']);
+            }
+            if (isset($xmlRoot['read-only']) && $xmlRoot['read-only'] == "true") {
+                $metadata->markReadOnly();
+            }
+        } else if ($xmlRoot->getName() == 'mapped-superclass') {
+            $metadata->setCustomRepositoryClass(
+                isset($xmlRoot['repository-class']) ? (string)$xmlRoot['repository-class'] : null
+            );
+            $metadata->isMappedSuperclass = true;
+        } else {
+            throw MappingException::classIsNotAValidEntityOrMappedSuperClass($className);
+        }
+
+        // Evaluate <entity...> attributes
+        $table = array();
+        if (isset($xmlRoot['table'])) {
+            $table['name'] = (string)$xmlRoot['table'];
+        }
+
+        $metadata->setPrimaryTable($table);
+
+        // Evaluate named queries
+        if (isset($xmlRoot->{'named-queries'})) {
+            foreach ($xmlRoot->{'named-queries'}->{'named-query'} as $namedQueryElement) {
+                $metadata->addNamedQuery(array(
+                    'name'  => (string)$namedQueryElement['name'],
+                    'query' => (string)$namedQueryElement['query']
+                ));
+            }
+        }
+
+        // Evaluate native named queries
+        if (isset($xmlRoot->{'named-native-queries'})) {
+            foreach ($xmlRoot->{'named-native-queries'}->{'named-native-query'} as $nativeQueryElement) {
+                $metadata->addNamedNativeQuery(array(
+                    'name'              => isset($nativeQueryElement['name']) ? (string)$nativeQueryElement['name'] : null,
+                    'query'             => isset($nativeQueryElement->query) ? (string)$nativeQueryElement->query : null,
+                    'resultClass'       => isset($nativeQueryElement['result-class']) ? (string)$nativeQueryElement['result-class'] : null,
+                    'resultSetMapping'  => isset($nativeQueryElement['result-set-mapping']) ? (string)$nativeQueryElement['result-set-mapping'] : null,
+                ));
+            }
+        }
+
+        // Evaluate sql result set mapping
+        if (isset($xmlRoot->{'sql-result-set-mappings'})) {
+            foreach ($xmlRoot->{'sql-result-set-mappings'}->{'sql-result-set-mapping'} as $rsmElement) {
+                $entities   = array();
+                $columns    = array();
+                foreach ($rsmElement as $entityElement) {
+                    //<entity-result/>
+                    if (isset($entityElement['entity-class'])) {
+                        $entityResult = array(
+                            'fields'                => array(),
+                            'entityClass'           => (string)$entityElement['entity-class'],
+                            'discriminatorColumn'   => isset($entityElement['discriminator-column']) ? (string)$entityElement['discriminator-column'] : null,
+                        );
+
+                        foreach ($entityElement as $fieldElement) {
+                            $entityResult['fields'][] = array(
+                                'name'      => isset($fieldElement['name']) ? (string)$fieldElement['name'] : null,
+                                'column'    => isset($fieldElement['column']) ? (string)$fieldElement['column'] : null,
+                            );
+                        }
+
+                        $entities[] = $entityResult;
+                    }
+
+                    //<column-result/>
+                    if (isset($entityElement['name'])) {
+                        $columns[] = array(
+                            'name' => (string)$entityElement['name'],
+                        );
+                    }
+                }
+
+                $metadata->addSqlResultSetMapping(array(
+                    'name'          => (string)$rsmElement['name'],
+                    'entities'      => $entities,
+                    'columns'       => $columns
+                ));
+            }
+        }
+
+        /* not implemented specially anyway. use table = schema.table
+        if (isset($xmlRoot['schema'])) {
+            $metadata->table['schema'] = (string)$xmlRoot['schema'];
+        }*/
+
+        if (isset($xmlRoot['inheritance-type'])) {
+            $inheritanceType = (string)$xmlRoot['inheritance-type'];
+            $metadata->setInheritanceType(constant('Doctrine\ORM\Mapping\ClassMetadata::INHERITANCE_TYPE_' . $inheritanceType));
+
+            if ($metadata->inheritanceType != \Doctrine\ORM\Mapping\ClassMetadata::INHERITANCE_TYPE_NONE) {
+                // Evaluate <discriminator-column...>
+                if (isset($xmlRoot->{'discriminator-column'})) {
+                    $discrColumn = $xmlRoot->{'discriminator-column'};
+                    $metadata->setDiscriminatorColumn(array(
+                        'name' => isset($discrColumn['name']) ? (string)$discrColumn['name'] : null,
+                        'type' => isset($discrColumn['type']) ? (string)$discrColumn['type'] : null,
+                        'length' => isset($discrColumn['length']) ? (string)$discrColumn['length'] : null,
+                        'columnDefinition' => isset($discrColumn['column-definition']) ? (string)$discrColumn['column-definition'] : null
+                    ));
+                } else {
+                    $metadata->setDiscriminatorColumn(array('name' => 'dtype', 'type' => 'string', 'length' => 255));
+                }
+
+                // Evaluate <discriminator-map...>
+                if (isset($xmlRoot->{'discriminator-map'})) {
+                    $map = array();
+                    foreach ($xmlRoot->{'discriminator-map'}->{'discriminator-mapping'} as $discrMapElement) {
+                        $map[(string)$discrMapElement['value']] = (string)$discrMapElement['class'];
+                    }
+                    $metadata->setDiscriminatorMap($map);
+                }
+            }
+        }
+
+
+        // Evaluate <change-tracking-policy...>
+        if (isset($xmlRoot['change-tracking-policy'])) {
+            $metadata->setChangeTrackingPolicy(constant('Doctrine\ORM\Mapping\ClassMetadata::CHANGETRACKING_'
+                    . strtoupper((string)$xmlRoot['change-tracking-policy'])));
+        }
+
+        // Evaluate <indexes...>
+        if (isset($xmlRoot->indexes)) {
+            $metadata->table['indexes'] = array();
+            foreach ($xmlRoot->indexes->index as $index) {
+                $columns = explode(',', (string)$index['columns']);
+
+                if (isset($index['name'])) {
+                    $metadata->table['indexes'][(string)$index['name']] = array(
+                        'columns' => $columns
+                    );
+                } else {
+                    $metadata->table['indexes'][] = array(
+                        'columns' => $columns
+                    );
+                }
+            }
+        }
+
+        // Evaluate <unique-constraints..>
+        if (isset($xmlRoot->{'unique-constraints'})) {
+            $metadata->table['uniqueConstraints'] = array();
+            foreach ($xmlRoot->{'unique-constraints'}->{'unique-constraint'} as $unique) {
+                $columns = explode(',', (string)$unique['columns']);
+
+                if (isset($unique['name'])) {
+                    $metadata->table['uniqueConstraints'][(string)$unique['name']] = array(
+                        'columns' => $columns
+                    );
+                } else {
+                    $metadata->table['uniqueConstraints'][] = array(
+                        'columns' => $columns
+                    );
+                }
+            }
+        }
+
+        if (isset($xmlRoot->options)) {
+            $metadata->table['options'] = $this->_parseOptions($xmlRoot->options->children());
+        }
+
+        // The mapping assignement is done in 2 times as a bug might occurs on some php/xml lib versions
+        // The internal SimpleXmlIterator get resetted, to this generate a duplicate field exception
+        $mappings = array();
+        // Evaluate <field ...> mappings
+        if (isset($xmlRoot->field)) {
+            foreach ($xmlRoot->field as $fieldMapping) {
+                $mapping = $this->columnToArray($fieldMapping);
+                $metadata->mapField($mapping);
+            }
+        }
+
+        foreach ($mappings as $mapping) {
+             $metadata->mapField($mapping);
+        }
+
+        // Evaluate <id ...> mappings
+        $associationIds = array();
+        foreach ($xmlRoot->id as $idElement) {
+            if ((bool)$idElement['association-key'] == true) {
+                $associationIds[(string)$idElement['name']] = true;
+                continue;
+            }
+
+            $mapping = array(
+                'id' => true,
+                'fieldName' => (string)$idElement['name']
+            );
+
+            if (isset($idElement['type'])) {
+                $mapping['type'] = (string)$idElement['type'];
+            }
+
+            if (isset($idElement['length'])) {
+                $mapping['length'] = (string)$idElement['length'];
+            }
+
+            if (isset($idElement['column'])) {
+                $mapping['columnName'] = (string)$idElement['column'];
+            }
+
+            if (isset($idElement['column-definition'])) {
+                $mapping['columnDefinition'] = (string)$idElement['column-definition'];
+            }
+
+            $metadata->mapField($mapping);
+
+            if (isset($idElement->generator)) {
+                $strategy = isset($idElement->generator['strategy']) ?
+                        (string)$idElement->generator['strategy'] : 'AUTO';
+                $metadata->setIdGeneratorType(constant('Doctrine\ORM\Mapping\ClassMetadata::GENERATOR_TYPE_'
+                        . $strategy));
+            }
+
+            // Check for SequenceGenerator/TableGenerator definition
+            if (isset($idElement->{'sequence-generator'})) {
+                $seqGenerator = $idElement->{'sequence-generator'};
+                $metadata->setSequenceGeneratorDefinition(array(
+                    'sequenceName' => (string)$seqGenerator['sequence-name'],
+                    'allocationSize' => (string)$seqGenerator['allocation-size'],
+                    'initialValue' => (string)$seqGenerator['initial-value']
+                ));
+            } else if (isset($idElement->{'custom-id-generator'})) {
+                $customGenerator = $idElement->{'custom-id-generator'};
+                $metadata->setCustomGeneratorDefinition(array(
+                    'class' => (string) $customGenerator['class']
+                ));
+            } else if (isset($idElement->{'table-generator'})) {
+                throw MappingException::tableIdGeneratorNotImplemented($className);
+            }
+        }
+
+        // Evaluate <one-to-one ...> mappings
+        if (isset($xmlRoot->{'one-to-one'})) {
+            foreach ($xmlRoot->{'one-to-one'} as $oneToOneElement) {
+                $mapping = array(
+                    'fieldName' => (string)$oneToOneElement['field'],
+                    'targetEntity' => (string)$oneToOneElement['target-entity']
+                );
+
+                if (isset($associationIds[$mapping['fieldName']])) {
+                    $mapping['id'] = true;
+                }
+
+                if (isset($oneToOneElement['fetch'])) {
+                    $mapping['fetch'] = constant('Doctrine\ORM\Mapping\ClassMetadata::FETCH_' . (string)$oneToOneElement['fetch']);
+                }
+
+                if (isset($oneToOneElement['mapped-by'])) {
+                    $mapping['mappedBy'] = (string)$oneToOneElement['mapped-by'];
+                } else {
+                    if (isset($oneToOneElement['inversed-by'])) {
+                        $mapping['inversedBy'] = (string)$oneToOneElement['inversed-by'];
+                    }
+                    $joinColumns = array();
+
+                    if (isset($oneToOneElement->{'join-column'})) {
+                        $joinColumns[] = $this->joinColumnToArray($oneToOneElement->{'join-column'});
+                    } else if (isset($oneToOneElement->{'join-columns'})) {
+                        foreach ($oneToOneElement->{'join-columns'}->{'join-column'} as $joinColumnElement) {
+                            $joinColumns[] = $this->joinColumnToArray($joinColumnElement);
+                        }
+                    }
+
+                    $mapping['joinColumns'] = $joinColumns;
+                }
+
+                if (isset($oneToOneElement->cascade)) {
+                    $mapping['cascade'] = $this->_getCascadeMappings($oneToOneElement->cascade);
+                }
+
+                if (isset($oneToOneElement['orphan-removal'])) {
+                    $mapping['orphanRemoval'] = (bool)$oneToOneElement['orphan-removal'];
+                }
+
+                $metadata->mapOneToOne($mapping);
+            }
+        }
+
+        // Evaluate <one-to-many ...> mappings
+        if (isset($xmlRoot->{'one-to-many'})) {
+            foreach ($xmlRoot->{'one-to-many'} as $oneToManyElement) {
+                $mapping = array(
+                    'fieldName' => (string)$oneToManyElement['field'],
+                    'targetEntity' => (string)$oneToManyElement['target-entity'],
+                    'mappedBy' => (string)$oneToManyElement['mapped-by']
+                );
+
+                if (isset($oneToManyElement['fetch'])) {
+                    $mapping['fetch'] = constant('Doctrine\ORM\Mapping\ClassMetadata::FETCH_' . (string)$oneToManyElement['fetch']);
+                }
+
+                if (isset($oneToManyElement->cascade)) {
+                    $mapping['cascade'] = $this->_getCascadeMappings($oneToManyElement->cascade);
+                }
+
+                if (isset($oneToManyElement['orphan-removal'])) {
+                    $mapping['orphanRemoval'] = (bool)$oneToManyElement['orphan-removal'];
+                }
+
+                if (isset($oneToManyElement->{'order-by'})) {
+                    $orderBy = array();
+                    foreach ($oneToManyElement->{'order-by'}->{'order-by-field'} as $orderByField) {
+                        $orderBy[(string)$orderByField['name']] = (string)$orderByField['direction'];
+                    }
+                    $mapping['orderBy'] = $orderBy;
+                }
+
+                if (isset($oneToManyElement['index-by'])) {
+                    $mapping['indexBy'] = (string)$oneToManyElement['index-by'];
+                } else if (isset($oneToManyElement->{'index-by'})) {
+                    throw new \InvalidArgumentException("<index-by /> is not a valid tag");
+                }
+
+                $metadata->mapOneToMany($mapping);
+            }
+        }
+
+        // Evaluate <many-to-one ...> mappings
+        if (isset($xmlRoot->{'many-to-one'})) {
+            foreach ($xmlRoot->{'many-to-one'} as $manyToOneElement) {
+                $mapping = array(
+                    'fieldName' => (string)$manyToOneElement['field'],
+                    'targetEntity' => (string)$manyToOneElement['target-entity']
+                );
+
+                if (isset($associationIds[$mapping['fieldName']])) {
+                    $mapping['id'] = true;
+                }
+
+                if (isset($manyToOneElement['fetch'])) {
+                    $mapping['fetch'] = constant('Doctrine\ORM\Mapping\ClassMetadata::FETCH_' . (string)$manyToOneElement['fetch']);
+                }
+
+                if (isset($manyToOneElement['inversed-by'])) {
+                    $mapping['inversedBy'] = (string)$manyToOneElement['inversed-by'];
+                }
+
+                $joinColumns = array();
+
+                if (isset($manyToOneElement->{'join-column'})) {
+                    $joinColumns[] = $this->joinColumnToArray($manyToOneElement->{'join-column'});
+                } else if (isset($manyToOneElement->{'join-columns'})) {
+                    foreach ($manyToOneElement->{'join-columns'}->{'join-column'} as $joinColumnElement) {
+                        $joinColumns[] = $this->joinColumnToArray($joinColumnElement);
+                    }
+                }
+
+                $mapping['joinColumns'] = $joinColumns;
+
+                if (isset($manyToOneElement->cascade)) {
+                    $mapping['cascade'] = $this->_getCascadeMappings($manyToOneElement->cascade);
+                }
+
+                $metadata->mapManyToOne($mapping);
+            }
+        }
+
+        // Evaluate <many-to-many ...> mappings
+        if (isset($xmlRoot->{'many-to-many'})) {
+            foreach ($xmlRoot->{'many-to-many'} as $manyToManyElement) {
+                $mapping = array(
+                    'fieldName' => (string)$manyToManyElement['field'],
+                    'targetEntity' => (string)$manyToManyElement['target-entity']
+                );
+
+                if (isset($manyToManyElement['fetch'])) {
+                    $mapping['fetch'] = constant('Doctrine\ORM\Mapping\ClassMetadata::FETCH_' . (string)$manyToManyElement['fetch']);
+                }
+
+                if (isset($manyToManyElement['orphan-removal'])) {
+                    $mapping['orphanRemoval'] = (bool)$manyToManyElement['orphan-removal'];
+                }
+
+                if (isset($manyToManyElement['mapped-by'])) {
+                    $mapping['mappedBy'] = (string)$manyToManyElement['mapped-by'];
+                } else if (isset($manyToManyElement->{'join-table'})) {
+                    if (isset($manyToManyElement['inversed-by'])) {
+                        $mapping['inversedBy'] = (string)$manyToManyElement['inversed-by'];
+                    }
+
+                    $joinTableElement = $manyToManyElement->{'join-table'};
+                    $joinTable = array(
+                        'name' => (string)$joinTableElement['name']
+                    );
+
+                    if (isset($joinTableElement['schema'])) {
+                        $joinTable['schema'] = (string)$joinTableElement['schema'];
+                    }
+
+                    foreach ($joinTableElement->{'join-columns'}->{'join-column'} as $joinColumnElement) {
+                        $joinTable['joinColumns'][] = $this->joinColumnToArray($joinColumnElement);
+                    }
+
+                    foreach ($joinTableElement->{'inverse-join-columns'}->{'join-column'} as $joinColumnElement) {
+                        $joinTable['inverseJoinColumns'][] = $this->joinColumnToArray($joinColumnElement);
+                    }
+
+                    $mapping['joinTable'] = $joinTable;
+                }
+
+                if (isset($manyToManyElement->cascade)) {
+                    $mapping['cascade'] = $this->_getCascadeMappings($manyToManyElement->cascade);
+                }
+
+                if (isset($manyToManyElement->{'order-by'})) {
+                    $orderBy = array();
+                    foreach ($manyToManyElement->{'order-by'}->{'order-by-field'} as $orderByField) {
+                        $orderBy[(string)$orderByField['name']] = (string)$orderByField['direction'];
+                    }
+                    $mapping['orderBy'] = $orderBy;
+                }
+
+                if (isset($manyToManyElement['index-by'])) {
+                    $mapping['indexBy'] = (string)$manyToManyElement['index-by'];
+                } else if (isset($manyToManyElement->{'index-by'})) {
+                    throw new \InvalidArgumentException("<index-by /> is not a valid tag");
+                }
+
+                $metadata->mapManyToMany($mapping);
+            }
+        }
+
+        // Evaluate association-overrides
+        if (isset($xmlRoot->{'attribute-overrides'})) {
+            foreach ($xmlRoot->{'attribute-overrides'}->{'attribute-override'} as $overrideElement) {
+                $fieldName = (string) $overrideElement['name'];
+                foreach ($overrideElement->field as $field) {
+                    $mapping = $this->columnToArray($field);
+                    $mapping['fieldName'] = $fieldName;
+                    $metadata->setAttributeOverride($fieldName, $mapping);
+                }
+            }
+        }
+
+        // Evaluate association-overrides
+        if (isset($xmlRoot->{'association-overrides'})) {
+            foreach ($xmlRoot->{'association-overrides'}->{'association-override'} as $overrideElement) {
+                $fieldName  = (string) $overrideElement['name'];
+                $override   = array();
+
+                // Check for join-columns
+                if (isset($overrideElement->{'join-columns'})) {
+                    $joinColumns = array();
+                    foreach ($overrideElement->{'join-columns'}->{'join-column'} as $joinColumnElement) {
+                        $joinColumns[] = $this->joinColumnToArray($joinColumnElement);
+                    }
+                    $override['joinColumns'] = $joinColumns;
+                }
+
+                // Check for join-table
+                if ($overrideElement->{'join-table'}) {
+                    $joinTable          = null;
+                    $joinTableElement   = $overrideElement->{'join-table'};
+
+                    $joinTable = array(
+                        'name'      => (string) $joinTableElement['name'],
+                        'schema'    => (string) $joinTableElement['schema']
+                    );
+
+                    if (isset($joinTableElement->{'join-columns'})) {
+                        foreach ($joinTableElement->{'join-columns'}->{'join-column'} as $joinColumnElement) {
+                            $joinTable['joinColumns'][] = $this->joinColumnToArray($joinColumnElement);
+                        }
+                    }
+
+                    if (isset($joinTableElement->{'inverse-join-columns'})) {
+                        foreach ($joinTableElement->{'inverse-join-columns'}->{'join-column'} as $joinColumnElement) {
+                            $joinTable['inverseJoinColumns'][] = $this->joinColumnToArray($joinColumnElement);
+                        }
+                    }
+
+                    $override['joinTable'] = $joinTable;
+                }
+
+                $metadata->setAssociationOverride($fieldName, $override);
+            }
+        }
+
+        // Evaluate <lifecycle-callbacks...>
+        if (isset($xmlRoot->{'lifecycle-callbacks'})) {
+            foreach ($xmlRoot->{'lifecycle-callbacks'}->{'lifecycle-callback'} as $lifecycleCallback) {
+                $metadata->addLifecycleCallback((string)$lifecycleCallback['method'], constant('Doctrine\ORM\Events::' . (string)$lifecycleCallback['type']));
+            }
+        }
+    }
+
+    /**
+     * Parses (nested) option elements.
+     *
+     * @param SimpleXMLElement $options the XML element.
+     * @return array The options array.
+     */
+    private function _parseOptions(SimpleXMLElement $options)
+    {
+        $array = array();
+
+        /* @var $option SimpleXMLElement */
+        foreach ($options as $option) {
+            if ($option->count()) {
+                $value = $this->_parseOptions($option->children());
+            } else {
+                $value = (string) $option;
+            }
+
+            $attr = $option->attributes();
+
+            if (isset($attr->name)) {
+                $array[(string) $attr->name] = $value;
+            } else {
+                $array[] = $value;
+            }
+        }
+
+        return $array;
+    }
+
+    /**
+     * Constructs a joinColumn mapping array based on the information
+     * found in the given SimpleXMLElement.
+     *
+     * @param SimpleXMLElement $joinColumnElement the XML element.
+     * @return array The mapping array.
+     */
+    private function joinColumnToArray(SimpleXMLElement $joinColumnElement)
+    {
+        $joinColumn = array(
+            'name' => (string)$joinColumnElement['name'],
+            'referencedColumnName' => (string)$joinColumnElement['referenced-column-name']
+        );
+
+        if (isset($joinColumnElement['unique'])) {
+            $joinColumn['unique'] = ((string)$joinColumnElement['unique'] == "false") ? false : true;
+        }
+
+        if (isset($joinColumnElement['nullable'])) {
+            $joinColumn['nullable'] = ((string)$joinColumnElement['nullable'] == "false") ? false : true;
+        }
+
+        if (isset($joinColumnElement['on-delete'])) {
+            $joinColumn['onDelete'] = (string)$joinColumnElement['on-delete'];
+        }
+
+        if (isset($joinColumnElement['column-definition'])) {
+            $joinColumn['columnDefinition'] = (string)$joinColumnElement['column-definition'];
+        }
+
+        return $joinColumn;
+    }
+
+     /**
+     * Parse the given field as array
+     *
+     * @param   SimpleXMLElement   $fieldMapping
+     * @return  array
+     */
+    private function columnToArray(SimpleXMLElement $fieldMapping)
+    {
+        $mapping = array(
+            'fieldName' => (string) $fieldMapping['name'],
+        );
+
+        if (isset($fieldMapping['type'])) {
+            $mapping['type'] = (string) $fieldMapping['type'];
+        }
+
+        if (isset($fieldMapping['column'])) {
+            $mapping['columnName'] = (string) $fieldMapping['column'];
+        }
+
+        if (isset($fieldMapping['length'])) {
+            $mapping['length'] = (int) $fieldMapping['length'];
+        }
+
+        if (isset($fieldMapping['precision'])) {
+            $mapping['precision'] = (int) $fieldMapping['precision'];
+        }
+
+        if (isset($fieldMapping['scale'])) {
+            $mapping['scale'] = (int) $fieldMapping['scale'];
+        }
+
+        if (isset($fieldMapping['unique'])) {
+            $mapping['unique'] = ((string) $fieldMapping['unique'] == "false") ? false : true;
+        }
+
+        if (isset($fieldMapping['nullable'])) {
+            $mapping['nullable'] = ((string) $fieldMapping['nullable'] == "false") ? false : true;
+        }
+
+        if (isset($fieldMapping['version']) && $fieldMapping['version']) {
+            $mapping['version'] = $fieldMapping['version'];
+        }
+
+        if (isset($fieldMapping['column-definition'])) {
+            $mapping['columnDefinition'] = (string) $fieldMapping['column-definition'];
+        }
+
+        if (isset($fieldMapping->options)) {
+            $mapping['options'] = $this->_parseOptions($fieldMapping->options->children());
+        }
+
+        return $mapping;
+    }
+
+    /**
+     * Gathers a list of cascade options found in the given cascade element.
+     *
+     * @param SimpleXMLElement $cascadeElement the cascade element.
+     * @return array The list of cascade options.
+     */
+    private function _getCascadeMappings($cascadeElement)
+    {
+        $cascades = array();
+        /* @var $action SimpleXmlElement */
+        foreach ($cascadeElement->children() as $action) {
+            // According to the JPA specifications, XML uses "cascade-persist"
+            // instead of "persist". Here, both variations
+            // are supported because both YAML and Annotation use "persist"
+            // and we want to make sure that this driver doesn't need to know
+            // anything about the supported cascading actions
+            $cascades[] = str_replace('cascade-', '', $action->getName());
+        }
+        return $cascades;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function loadMappingFile($file)
+    {
+        $result = array();
+        $xmlElement = simplexml_load_file($file);
+
+        if (isset($xmlElement->entity)) {
+            foreach ($xmlElement->entity as $entityElement) {
+                $entityName = (string)$entityElement['name'];
+                $result[$entityName] = $entityElement;
+            }
+        } else if (isset($xmlElement->{'mapped-superclass'})) {
+            foreach ($xmlElement->{'mapped-superclass'} as $mappedSuperClass) {
+                $className = (string)$mappedSuperClass['name'];
+                $result[$className] = $mappedSuperClass;
+            }
+        }
+
+        return $result;
+    }
+}