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ArrayNodeDefinition.php
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ArrayNodeDefinition.php
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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\Config\Definition\Builder;
use Symfony\Component\Config\Definition\ArrayNode;
use Symfony\Component\Config\Definition\PrototypedArrayNode;
/**
* This class provides a fluent interface for defining an array node.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class ArrayNodeDefinition extends NodeDefinition implements ParentNodeDefinitionInterface
{
protected $performDeepMerging;
protected $ignoreExtraKeys;
protected $children;
protected $prototype;
protected $atLeastOne;
protected $allowNewKeys;
protected $key;
protected $removeKeyItem;
protected $addDefaults;
protected $nodeBuilder;
/**
* {@inheritDoc}
*/
public function __construct($name, NodeParentInterface $parent = null)
{
parent::__construct($name, $parent);
$this->children = array();
$this->addDefaults = false;
$this->allowNewKeys = true;
$this->atLeastOne = false;
$this->allowEmptyValue = true;
$this->performDeepMerging = true;
$this->nullEquivalent = array();
$this->trueEquivalent = array();
}
/**
* Set a custom children builder
*
* @param NodeBuilder $builder A custom NodeBuilder
*/
public function setBuilder(NodeBuilder $builder)
{
$this->nodeBuilder = $builder;
}
/**
* Returns a builder to add children nodes
*
* @return NodeBuilder
*/
public function children()
{
return $this->getNodeBuilder();
}
/**
* Sets a prototype for child nodes.
*
* @param string $type the type of node
*
* @return NodeDefinition
*/
public function prototype($type)
{
$builder = $this->getNodeBuilder();
$this->prototype = $builder->node(null, $type);
$this->prototype->parent = $this;
return $this->prototype;
}
/**
* Adds the default value if the node is not set in the configuration.
*
* @return ArrayNodeDefinition
*/
public function addDefaultsIfNotSet()
{
$this->addDefaults = true;
return $this;
}
/**
* Requires the node to have at least one element.
*
* @return ArrayNodeDefinition
*/
public function requiresAtLeastOneElement()
{
$this->atLeastOne = true;
return $this;
}
/**
* Disallows adding news keys in a subsequent configuration.
*
* If used all keys have to be defined in the same configuration file.
*
* @return ArrayNodeDefinition
*/
public function disallowNewKeysInSubsequentConfigs()
{
$this->allowNewKeys = false;
return $this;
}
/**
* Sets a normalization rule for XML configurations.
*
* @param string $singular The key to remap
* @param string $plural The plural of the key for irregular plurals
*
* @return ArrayNodeDefinition
*/
public function fixXmlConfig($singular, $plural = null)
{
$this->normalization()->remap($singular, $plural);
return $this;
}
/**
* Set the attribute which value is to be used as key.
*
* This is useful when you have an indexed array that should be an
* associative array. You can select an item from within the array
* to be the key of the particular item. For example, if "id" is the
* "key", then:
*
* array(
* array('id' => 'my_name', 'foo' => 'bar'),
* )
*
* becomes
*
* array(
* 'my_name' => array('foo' => 'bar'),
* )
*
* If you'd like "'id' => 'my_name'" to still be present in the resulting
* array, then you can set the second argument of this method to false.
*
* @param string $name The name of the key
* @param Boolean $removeKeyItem Whether or not the key item should be removed.
*
* @return ArrayNodeDefinition
*/
public function useAttributeAsKey($name, $removeKeyItem = true)
{
$this->key = $name;
$this->removeKeyItem = $removeKeyItem;
return $this;
}
/**
* Sets whether the node can be unset.
*
* @param Boolean $allow
*
* @return ArrayNodeDefinition
*/
public function canBeUnset($allow = true)
{
$this->merge()->allowUnset($allow);
return $this;
}
/**
* Disables the deep merging of the node.
*
* @return ArrayNodeDefinition
*/
public function performNoDeepMerging()
{
$this->performDeepMerging = false;
return $this;
}
/**
* Allows extra config keys to be specified under an array without
* throwing an exception.
*
* Those config values are simply ignored. This should be used only
* in special cases where you want to send an entire configuration
* array through a special tree that processes only part of the array.
*
* @return ArrayNodeDefinition
*/
public function ignoreExtraKeys()
{
$this->ignoreExtraKeys = true;
return $this;
}
/**
* Append a node definition.
*
* $node = new ArrayNodeDefinition()
* ->children()
* ->scalarNode('foo')
* ->scalarNode('baz')
* ->end()
* ->append($this->getBarNodeDefinition())
* ;
*
* @param NodeDefinition $node A NodeDefinition instance
*
* @return ArrayNodeDefinition This node
*/
public function append(NodeDefinition $node)
{
$this->children[$node->name] = $node->setParent($this);
return $this;
}
/**
* Returns a node builder to be used to add children and prototype
*
* @return NodeBuilder The node builder
*/
protected function getNodeBuilder()
{
if (null === $this->nodeBuilder) {
$this->nodeBuilder = new NodeBuilder();
}
return $this->nodeBuilder->setParent($this);
}
/**
* {@inheritDoc}
*/
protected function createNode()
{
if (null == $this->prototype) {
$node = new ArrayNode($this->name, $this->parent);
} else {
$node = new PrototypedArrayNode($this->name, $this->parent);
}
$node->setAddIfNotSet($this->addDefaults);
$node->setAllowNewKeys($this->allowNewKeys);
$node->addEquivalentValue(null, $this->nullEquivalent);
$node->addEquivalentValue(true, $this->trueEquivalent);
$node->addEquivalentValue(false, $this->falseEquivalent);
$node->setPerformDeepMerging($this->performDeepMerging);
$node->setRequired($this->required);
$node->setIgnoreExtraKeys($this->ignoreExtraKeys);
if (null !== $this->normalization) {
$node->setNormalizationClosures($this->normalization->before);
$node->setXmlRemappings($this->normalization->remappings);
}
if (null !== $this->merge) {
$node->setAllowOverwrite($this->merge->allowOverwrite);
$node->setAllowFalse($this->merge->allowFalse);
}
if (null !== $this->validation) {
$node->setFinalValidationClosures($this->validation->rules);
}
if (null == $this->prototype) {
foreach ($this->children as $child) {
$child->parent = $node;
$node->addChild($child->getNode());
}
} else {
if (null !== $this->key) {
$node->setKeyAttribute($this->key, $this->removeKeyItem);
}
if (true === $this->atLeastOne) {
$node->setMinNumberOfElements(1);
}
if (null !== $this->defaultValue) {
$node->setDefaultValue($this->defaultValue);
}
$this->prototype->parent = $node;
$node->setPrototype($this->prototype->getNode());
}
return $node;
}
}