/**
* Walks down a SelectStatement AST node, modifying it to
* select fields like requested by url
*
* @param SelectStatement $AST
* @return void
*/
public function walkSelectStatement(SelectStatement $AST)
{
$query = $this->_getQuery();
$fields = $query->getHint('newscoop.api.fields');
$selectItems = array();
$parent = null;
$alias = null;
foreach ($this->_getQueryComponents() as $dqlAlias => $qComp) {
if ($qComp['parent'] === null && $qComp['nestingLevel'] == 0) {
$parent = $qComp;
$alias = $dqlAlias;
break;
}
}
$components = $this->_getQueryComponents();
foreach ($fields as $field) {
$entityData = $this->findAliasForField($field);
$orginalField = $field;
$realField = \Newscoop\Gimme\PropertyMatcher::match($entityData[1], $field);
if ($field != $realField) {
$entityData = $this->findAliasForField($realField);
$field = $realField;
}
if ($alias !== false) {
if (!array_key_exists($alias, $components)) {
throw new \UnexpectedValueException("There is no component aliased by [{$alias}] in the given Query");
}
$meta = $components[$alias];
if ($meta['metadata']->hasAssociation($orginalField)) {
throw new \UnexpectedValueException("Associations (field {$orginalField}) in partial response are not yet implemented");
}
if (!$meta['metadata']->hasField($field)) {
throw new \UnexpectedValueException("There is no such field [{$field}] in the given Query component, aliased by [{$alias}]");
}
} else {
if (!array_key_exists($field, $components)) {
throw new \UnexpectedValueException("There is no component field [{$field}] in the given Query");
}
}
if ($alias !== false) {
$pathExpression = new PathExpression(PathExpression::TYPE_STATE_FIELD | PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION, $alias, $field);
$pathExpression->type = PathExpression::TYPE_STATE_FIELD;
} else {
$pathExpression = $field;
}
$simpleSelectExpression = new SelectExpression($pathExpression, $orginalField);
$selectItems[] = $simpleSelectExpression;
}
$AST->selectClause->selectExpressions = $selectItems;
}
/**
* Walks down a SelectStatement AST node, modifying it to
* sort the query like requested by url
*
* @param SelectStatement $AST
* @return void
*/
public function walkSelectStatement(SelectStatement $AST)
{
$query = $this->_getQuery();
$sort = $query->getHint('newscoop.api.sort');
$orderByItems = array();
$components = $this->_getQueryComponents();
foreach ($sort as $field => $direction) {
$entityData = $this->findAliasForField($field);
$realField = \Newscoop\Gimme\PropertyMatcher::match($entityData[1], $field);
if ($field != $realField) {
$entityData = $this->findAliasForField($realField);
$field = $realField;
}
$alias = $entityData[0];
if ($alias !== false) {
if (!array_key_exists($alias, $components)) {
throw new \UnexpectedValueException("There is no component aliased by [{$alias}] in the given Query");
}
$meta = $components[$alias];
if (!$meta['metadata']->hasField($field)) {
throw new \UnexpectedValueException("There is no such field [{$field}] in the given Query component, aliased by [{$alias}]");
}
} else {
if (!array_key_exists($field, $components)) {
throw new \UnexpectedValueException("There is no component field [{$field}] in the given Query");
}
}
if ($alias !== false) {
$pathExpression = new PathExpression(PathExpression::TYPE_STATE_FIELD, $alias, $field);
$pathExpression->type = PathExpression::TYPE_STATE_FIELD;
} else {
$pathExpression = $field;
}
$orderByItem = new OrderByItem($pathExpression);
$orderByItem->type = $direction;
$orderByItems[] = $orderByItem;
}
$AST->orderByClause = new OrderByClause($orderByItems);
}