104 lines
2.4 KiB
PHP
104 lines
2.4 KiB
PHP
<?php
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namespace SilverStripe\ORM\Queries;
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use SilverStripe\Core\Injector\Injector;
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/**
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* Object representing a SQL UPDATE query.
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* The various parts of the SQL query can be manipulated individually.
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*/
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class SQLUpdate extends SQLConditionalExpression implements SQLWriteExpression {
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/**
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* The assignment to create for this update
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*
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* @var SQLAssignmentRow
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*/
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protected $assignment = null;
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/**
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* Construct a new SQLUpdate object
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*
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* @param string $table Table name to update (ANSI quoted)
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* @param array $assignment List of column assignments
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* @param array $where List of where clauses
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* @return static
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*/
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public static function create($table = null, $assignment = array(), $where = array()) {
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return Injector::inst()->createWithArgs(__CLASS__, func_get_args());
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}
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/**
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* Construct a new SQLUpdate object
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*
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* @param string $table Table name to update (ANSI quoted)
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* @param array $assignment List of column assignments
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* @param array $where List of where clauses
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*/
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function __construct($table = null, $assignment = array(), $where = array()) {
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parent::__construct(null, $where);
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$this->assignment = new SQLAssignmentRow();
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$this->setTable($table);
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$this->setAssignments($assignment);
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}
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/**
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* Sets the table name to update
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*
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* @param string $table
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* @return $this Self reference
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*/
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public function setTable($table) {
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return $this->setFrom($table);
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}
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/**
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* Gets the table name to update
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*
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* @return string Name of the table
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*/
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public function getTable() {
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return reset($this->from);
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}
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public function addAssignments(array $assignments) {
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$this->assignment->addAssignments($assignments);
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return $this;
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}
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public function setAssignments(array $assignments) {
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$this->assignment->setAssignments($assignments);
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return $this;
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}
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public function getAssignments() {
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return $this->assignment->getAssignments();
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}
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public function assign($field, $value) {
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$this->assignment->assign($field, $value);
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return $this;
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}
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public function assignSQL($field, $sql) {
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$this->assignment->assignSQL($field, $sql);
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return $this;
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}
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/**
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* Clears all currently set assigment values
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*
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* @return $this The self reference to this query
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*/
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public function clear() {
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$this->assignment->clear();
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return $this;
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}
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public function isEmpty() {
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return empty($this->assignment) || $this->assignment->isEmpty() || parent::isEmpty();
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}
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}
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