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phab/src/applications/config/schema/PhabricatorConfigColumnSchema.php
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PhabricatorConfigColumnSchema.php
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<?php
final class PhabricatorConfigColumnSchema
extends PhabricatorConfigStorageSchema {
private $characterSet;
private $collation;
private $columnType;
private $dataType;
private $nullable;
public function setNullable($nullable) {
$this->nullable = $nullable;
return $this;
}
public function getNullable() {
return $this->nullable;
}
public function setColumnType($column_type) {
$this->columnType = $column_type;
return $this;
}
public function getColumnType() {
return $this->columnType;
}
protected function getSubschemata() {
return array();
}
public function setDataType($data_type) {
$this->dataType = $data_type;
return $this;
}
public function getDataType() {
return $this->dataType;
}
public function setCollation($collation) {
$this->collation = $collation;
return $this;
}
public function getCollation() {
return $this->collation;
}
public function setCharacterSet($character_set) {
$this->characterSet = $character_set;
return $this;
}
public function getCharacterSet() {
return $this->characterSet;
}
public function getKeyByteLength($prefix = null) {
$type = $this->getColumnType();
$matches = null;
if (preg_match('/^varchar\((\d+)\)$/', $type, $matches)) {
// For utf8mb4, each character requires 4 bytes.
$size = (int)$matches[1];
if ($prefix && $prefix < $size) {
$size = $prefix;
}
return $size * 4;
}
$matches = null;
if (preg_match('/^char\((\d+)\)$/', $type, $matches)) {
// We use char() only for fixed-length binary data, so its size
// is always the column size.
$size = (int)$matches[1];
if ($prefix && $prefix < $size) {
$size = $prefix;
}
return $size;
}
// The "long..." types are arbitrarily long, so just use a big number to
// get the point across. In practice, these should always index only a
// prefix.
if ($type == 'longtext') {
$size = (1 << 16);
if ($prefix && $prefix < $size) {
$size = $prefix;
}
return $size * 4;
}
if ($type == 'longblob') {
$size = (1 << 16);
if ($prefix && $prefix < $size) {
$size = $prefix;
}
return $size * 1;
}
switch ($type) {
case 'int(10) unsigned':
return 4;
}
// TODO: Build this out to catch overlong indexes.
return 0;
}
public function compareToSimilarSchema(
PhabricatorConfigStorageSchema $expect) {
$issues = array();
if ($this->getCharacterSet() != $expect->getCharacterSet()) {
$issues[] = self::ISSUE_CHARSET;
}
if ($this->getCollation() != $expect->getCollation()) {
$issues[] = self::ISSUE_COLLATION;
}
if ($this->getColumnType() != $expect->getColumnType()) {
$issues[] = self::ISSUE_COLUMNTYPE;
}
if ($this->getNullable() !== $expect->getNullable()) {
$issues[] = self::ISSUE_NULLABLE;
}
return $issues;
}
public function newEmptyClone() {
$clone = clone $this;
return $clone;
}
}
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