449 lines
14 KiB
PHP
449 lines
14 KiB
PHP
<?php
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/*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\ORM\Query;
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/**
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* A ResultSetMapping describes how a result set of an SQL query maps to a Doctrine result.
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*
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* IMPORTANT NOTE:
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* The properties of this class are only public for fast internal READ access and to (drastically)
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* reduce the size of serialized instances for more effective caching due to better (un-)serialization
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* performance.
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*
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* <b>Users should use the public methods.</b>
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*
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* @author Roman Borschel <roman@code-factory.org>
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* @since 2.0
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* @todo Think about whether the number of lookup maps can be reduced.
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*/
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class ResultSetMapping
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{
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/**
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* @ignore
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* @var boolean Whether the result is mixed (contains scalar values together with field values).
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*/
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public $isMixed = false;
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/**
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* @ignore
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* @var array Maps alias names to class names.
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*/
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public $aliasMap = array();
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/**
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* @ignore
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* @var array Maps alias names to related association field names.
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*/
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public $relationMap = array();
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/**
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* @ignore
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* @var array Maps alias names to parent alias names.
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*/
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public $parentAliasMap = array();
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/**
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* @ignore
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* @var array Maps column names in the result set to field names for each class.
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*/
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public $fieldMappings = array();
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/**
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* @ignore
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* @var array Maps column names in the result set to the alias/field name to use in the mapped result.
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*/
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public $scalarMappings = array();
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/**
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* @ignore
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* @var array Maps entities in the result set to the alias name to use in the mapped result.
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*/
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public $entityMappings = array();
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/**
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* @ignore
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* @var array Maps column names of meta columns (foreign keys, discriminator columns, ...) to field names.
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*/
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public $metaMappings = array();
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/**
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* @ignore
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* @var array Maps column names in the result set to the alias they belong to.
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*/
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public $columnOwnerMap = array();
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/**
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* @ignore
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* @var array List of columns in the result set that are used as discriminator columns.
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*/
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public $discriminatorColumns = array();
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/**
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* @ignore
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* @var array Maps alias names to field names that should be used for indexing.
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*/
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public $indexByMap = array();
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/**
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* @ignore
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* @var array Map from column names to class names that declare the field the column is mapped to.
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*/
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public $declaringClasses = array();
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/**
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* @var array This is necessary to hydrate derivate foreign keys correctly.
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*/
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public $isIdentifierColumn = array();
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/**
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* Adds an entity result to this ResultSetMapping.
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*
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* @param string $class The class name of the entity.
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* @param string $alias The alias for the class. The alias must be unique among all entity
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* results or joined entity results within this ResultSetMapping.
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* @param string $resultAlias The result alias with which the entity result should be
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* placed in the result structure.
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*
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* @todo Rename: addRootEntity
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*/
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public function addEntityResult($class, $alias, $resultAlias = null)
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{
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$this->aliasMap[$alias] = $class;
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$this->entityMappings[$alias] = $resultAlias;
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}
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/**
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* Sets a discriminator column for an entity result or joined entity result.
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* The discriminator column will be used to determine the concrete class name to
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* instantiate.
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*
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* @param string $alias The alias of the entity result or joined entity result the discriminator
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* column should be used for.
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* @param string $discrColumn The name of the discriminator column in the SQL result set.
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*
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* @todo Rename: addDiscriminatorColumn
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*/
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public function setDiscriminatorColumn($alias, $discrColumn)
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{
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$this->discriminatorColumns[$alias] = $discrColumn;
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$this->columnOwnerMap[$discrColumn] = $alias;
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}
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/**
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* Sets a field to use for indexing an entity result or joined entity result.
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*
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* @param string $alias The alias of an entity result or joined entity result.
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* @param string $fieldName The name of the field to use for indexing.
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*/
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public function addIndexBy($alias, $fieldName)
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{
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$found = false;
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foreach ($this->fieldMappings AS $columnName => $columnFieldName) {
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if ( ! ($columnFieldName === $fieldName && $this->columnOwnerMap[$columnName] === $alias)) continue;
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$this->addIndexByColumn($alias, $columnName);
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$found = true;
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break;
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}
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/* TODO: check if this exception can be put back, for now it's gone because of assumptions made by some ORM internals
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if ( ! $found) {
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$message = sprintf(
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'Cannot add index by for DQL alias %s and field %s without calling addFieldResult() for them before.',
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$alias,
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$fieldName
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);
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throw new \LogicException($message);
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}
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*/
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}
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/**
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* Set to index by a scalar result column name
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*
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* @param $resultColumnName
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* @return void
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*/
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public function addIndexByScalar($resultColumnName)
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{
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$this->indexByMap['scalars'] = $resultColumnName;
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}
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/**
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* Sets a column to use for indexing an entity or joined entity result by the given alias name.
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*
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* @param $alias
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* @param $resultColumnName
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* @return void
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*/
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public function addIndexByColumn($alias, $resultColumnName)
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{
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$this->indexByMap[$alias] = $resultColumnName;
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}
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/**
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* Checks whether an entity result or joined entity result with a given alias has
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* a field set for indexing.
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*
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* @param string $alias
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* @return boolean
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* @todo Rename: isIndexed($alias)
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*/
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public function hasIndexBy($alias)
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{
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return isset($this->indexByMap[$alias]);
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}
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/**
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* Checks whether the column with the given name is mapped as a field result
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* as part of an entity result or joined entity result.
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*
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* @param string $columnName The name of the column in the SQL result set.
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* @return boolean
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* @todo Rename: isField
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*/
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public function isFieldResult($columnName)
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{
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return isset($this->fieldMappings[$columnName]);
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}
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/**
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* Adds a field to the result that belongs to an entity or joined entity.
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*
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* @param string $alias The alias of the root entity or joined entity to which the field belongs.
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* @param string $columnName The name of the column in the SQL result set.
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* @param string $fieldName The name of the field on the declaring class.
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* @param string $declaringClass The name of the class that declares/owns the specified field.
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* When $alias refers to a superclass in a mapped hierarchy but
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* the field $fieldName is defined on a subclass, specify that here.
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* If not specified, the field is assumed to belong to the class
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* designated by $alias.
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* @todo Rename: addField
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*/
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public function addFieldResult($alias, $columnName, $fieldName, $declaringClass = null)
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{
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// column name (in result set) => field name
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$this->fieldMappings[$columnName] = $fieldName;
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// column name => alias of owner
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$this->columnOwnerMap[$columnName] = $alias;
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// field name => class name of declaring class
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$this->declaringClasses[$columnName] = $declaringClass ?: $this->aliasMap[$alias];
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if ( ! $this->isMixed && $this->scalarMappings) {
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$this->isMixed = true;
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}
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}
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/**
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* Adds a joined entity result.
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*
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* @param string $class The class name of the joined entity.
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* @param string $alias The unique alias to use for the joined entity.
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* @param string $parentAlias The alias of the entity result that is the parent of this joined result.
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* @param object $relation The association field that connects the parent entity result with the joined entity result.
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* @todo Rename: addJoinedEntity
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*/
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public function addJoinedEntityResult($class, $alias, $parentAlias, $relation)
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{
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$this->aliasMap[$alias] = $class;
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$this->parentAliasMap[$alias] = $parentAlias;
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$this->relationMap[$alias] = $relation;
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}
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/**
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* Adds a scalar result mapping.
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*
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* @param string $columnName The name of the column in the SQL result set.
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* @param string $alias The result alias with which the scalar result should be placed in the result structure.
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* @todo Rename: addScalar
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*/
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public function addScalarResult($columnName, $alias)
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{
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$this->scalarMappings[$columnName] = $alias;
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if ( ! $this->isMixed && $this->fieldMappings) {
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$this->isMixed = true;
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}
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}
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/**
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* Checks whether a column with a given name is mapped as a scalar result.
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*
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* @param string $columName The name of the column in the SQL result set.
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* @return boolean
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* @todo Rename: isScalar
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*/
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public function isScalarResult($columnName)
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{
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return isset($this->scalarMappings[$columnName]);
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}
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/**
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* Gets the name of the class of an entity result or joined entity result,
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* identified by the given unique alias.
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*
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* @param string $alias
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* @return string
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*/
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public function getClassName($alias)
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{
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return $this->aliasMap[$alias];
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}
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/**
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* Gets the field alias for a column that is mapped as a scalar value.
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*
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* @param string $columnName The name of the column in the SQL result set.
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* @return string
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*/
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public function getScalarAlias($columnName)
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{
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return $this->scalarMappings[$columnName];
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}
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/**
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* Gets the name of the class that owns a field mapping for the specified column.
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*
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* @param string $columnName
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* @return string
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*/
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public function getDeclaringClass($columnName)
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{
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return $this->declaringClasses[$columnName];
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}
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/**
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*
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* @param string $alias
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* @return AssociationMapping
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*/
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public function getRelation($alias)
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{
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return $this->relationMap[$alias];
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}
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/**
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*
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* @param string $alias
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* @return boolean
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*/
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public function isRelation($alias)
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{
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return isset($this->relationMap[$alias]);
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}
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/**
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* Gets the alias of the class that owns a field mapping for the specified column.
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*
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* @param string $columnName
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* @return string
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*/
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public function getEntityAlias($columnName)
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{
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return $this->columnOwnerMap[$columnName];
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}
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/**
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* Gets the parent alias of the given alias.
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*
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* @param string $alias
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* @return string
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*/
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public function getParentAlias($alias)
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{
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return $this->parentAliasMap[$alias];
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}
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/**
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* Checks whether the given alias has a parent alias.
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*
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* @param string $alias
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* @return boolean
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*/
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public function hasParentAlias($alias)
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{
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return isset($this->parentAliasMap[$alias]);
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}
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/**
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* Gets the field name for a column name.
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*
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* @param string $columnName
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* @return string
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*/
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public function getFieldName($columnName)
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{
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return $this->fieldMappings[$columnName];
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}
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/**
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*
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* @return array
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*/
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public function getAliasMap()
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{
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return $this->aliasMap;
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}
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/**
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* Gets the number of different entities that appear in the mapped result.
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*
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* @return integer
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*/
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public function getEntityResultCount()
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{
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return count($this->aliasMap);
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}
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/**
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* Checks whether this ResultSetMapping defines a mixed result.
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* Mixed results can only occur in object and array (graph) hydration. In such a
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* case a mixed result means that scalar values are mixed with objects/array in
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* the result.
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*
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* @return boolean
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*/
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public function isMixedResult()
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{
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return $this->isMixed;
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}
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/**
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* Adds a meta column (foreign key or discriminator column) to the result set.
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*
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* @param string $alias
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* @param string $columnName
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* @param string $fieldName
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* @param bool
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*/
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public function addMetaResult($alias, $columnName, $fieldName, $isIdentifierColumn = false)
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{
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$this->metaMappings[$columnName] = $fieldName;
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$this->columnOwnerMap[$columnName] = $alias;
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if ($isIdentifierColumn) {
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$this->isIdentifierColumn[$alias][$columnName] = true;
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}
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}
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}
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