InsertQuery::preExecute
public function InsertQuery::preExecute
public InsertQuery::preExecute()
Preprocesses and validates the query.
Return value
TRUE if the validation was successful, FALSE if not.
Throws
File
- includes/database/query.inc, line 698
- Non-specific Database query code. Used by all engines.
Class
- InsertQuery
- General class for an abstracted INSERT query.
Code
public function preExecute() { // Confirm that the user did not try to specify an identical // field and default field. if (array_intersect($this->insertFields, $this->defaultFields)) { throw new FieldsOverlapException('You may not specify the same field to have a value and a schema-default value.'); } if (!empty($this->fromQuery)) { // We have to assume that the used aliases match the insert fields. // Regular fields are added to the query before expressions, maintain the // same order for the insert fields. // This behavior can be overridden by calling fields() manually as only the // first call to fields() does have an effect. $this->fields(array_merge(array_keys($this->fromQuery->getFields()), array_keys($this->fromQuery->getExpressions()))); } else { // Don't execute query without fields. if (count($this->insertFields) + count($this->defaultFields) == 0) { throw new NoFieldsException('There are no fields available to insert with.'); } } // If no values have been added, silently ignore this query. This can happen // if values are added conditionally, so we don't want to throw an // exception. if (!isset($this->insertValues[0]) && count($this->insertFields) > 0 && empty($this->fromQuery)) { return FALSE; } return TRUE; }
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https://api.drupal.org/api/drupal/includes!database!query.inc/function/InsertQuery::preExecute/7.x