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<?php
namespace Bitrix\Perfmon\Sql;
use Bitrix\Main\NotSupportedException;
use Bitrix\Perfmon\Php;
class Updater
{
protected $dbType = '';
protected $delimiter = '';
/** @var \Bitrix\Perfmon\Sql\Table */
protected $tableCheck = null;
protected $conditions = array();
/** @var \Bitrix\Perfmon\Php\Statement[]*/
protected $statements = array();
/**
* Sets database type. Currently supported:
* - MYSQL
* - ORACLE
* - MSSQL
*
* @param string $dbType Database type.
*
* @return Updater
*/
public function setDbType($dbType = '')
{
$this->dbType = (string)$dbType;
return $this;
}
/**
* Sets DDL delimiter for parsing.
*
* @param string $delimiter DDL statements delimiter.
*
* @return Updater
*/
public function setDelimiter($delimiter = '')
{
$this->delimiter = (string)$delimiter;
return $this;
}
/**
* Returns array of generated statements.
*
* @return \Bitrix\Perfmon\Php\Statement[]
*/
public function getStatements()
{
return $this->statements;
}
/**
* Produces updater code.
*
* @param string $sourceSql Source DDL statements.
* @param string $targetSql Target DDL statements.
*
* @return string
* @throws NotSupportedException
*/
public function generate($sourceSql, $targetSql)
{
$source = new Schema;
$source->createFromString($sourceSql, $this->delimiter);
$target = new Schema;
$target->createFromString($targetSql, $this->delimiter);
$diff = Compare::diff($source ,$target);
if ($diff)
{
$sourceTables = $source->tables->getList();
if ($sourceTables)
{
$this->tableCheck = array_shift($sourceTables);
}
else
{
$targetTables = $target->tables->getList();
if ($targetTables)
{
$this->tableCheck = array_shift($targetTables);
}
else
{
$this->tableCheck = null;
}
}
if (!$this->tableCheck)
throw new NotSupportedException("no CHECK TABLE found.");
$php = $this->handle($diff);
return
"if (\$updater->CanUpdateDatabase() && \$updater->TableExists('".EscapePHPString($this->tableCheck->name)."'))\n".
"{\n".
"\tif (\$DB->type == \"".EscapePHPString($this->dbType)."\")\n".
"\t{\n".
$php.
"\t}\n".
"}\n";
}
else
{
return "";
}
}
/**
* @param array $diff Difference pairs.
*
* @return string
*/
protected function handle(array $diff)
{
$this->conditions = array();
foreach ($diff as $pair)
{
if (!isset($pair[0]))
{
$this->handleCreate($pair[1]);
}
elseif (!isset($pair[1]))
{
$this->handleDrop($pair[0]);
}
else
{
$this->handleChange($pair[0], $pair[1]);
}
}
$result = "";
foreach ($this->conditions as $condition => $statements)
{
$result .= $condition;
if ($condition)
$result .= "\t\t{\n";
$result .= implode("", $statements);
if ($condition)
$result .= "\t\t}\n";
}
return $result;
}
/**
* @param BaseObject $object Database schema object.
*
* @return void
*/
protected function handleCreate(BaseObject $object)
{
if ($object instanceof Sequence || $object instanceof Procedure)
{
$ddl = $object->getCreateDdl($this->dbType);
$this->conditions[""][] = $this->multiLinePhp("\t\t\$DB->Query(\"", $ddl, "\", true);\n");
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\", true);");
$stmt->dependOn = $this->tableCheck->getLowercasedName();
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition("\$updater->TableExists(\"".EscapePHPString($this->tableCheck->getLowercasedName())."\")");
}
elseif ($object instanceof Table)
{
$ddl = $object->getCreateDdl($this->dbType);
$predicate = "!\$updater->TableExists(\"".EscapePHPString($object->name)."\")";
$cond = "\t\tif ($predicate)\n";
$this->conditions[$cond][] = $this->multiLinePhp("\t\t\t\$DB->Query(\"\n\t\t\t\t", str_replace("\n", "\n\t\t\t\t", $ddl), "\n\t\t\t\");\n");
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\", true);");
$stmt->tableName = $object->getLowercasedName();
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition("\$updater->TableExists(\"".EscapePHPString($this->tableCheck->getLowercasedName())."\")");
$stmt->addCondition("!\$updater->TableExists(\"".EscapePHPString($object->getLowercasedName())."\")");
}
elseif ($object instanceof Column)
{
$ddl = $object->getCreateDdl($this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($object->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$predicate2 = "!\$DB->Query(\"SELECT ".EscapePHPString($object->name)." FROM ".EscapePHPString($object->parent->getLowercasedName())." WHERE 1=0\", true)";
$this->conditions[$cond][] =
"\t\t\tif ($predicate2)\n".
"\t\t\t{\n".
$this->multiLinePhp("\t\t\t\t\$DB->Query(\"", $ddl, "\");\n").
"\t\t\t}\n";
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\");");
$stmt->dependOn = $object->parent->getLowercasedName();
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
$stmt->addCondition($predicate2);
}
elseif ($object instanceof Index)
{
$ddl = $object->getCreateDdl($this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($object->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$predicate2 = "!\$DB->IndexExists(\"".EscapePHPString($object->parent->getUnquotedName())."\", array(".$this->multiLinePhp("\"", $object->getUnquotedName($object->columns), "\", ")."))";
$this->conditions[$cond][] =
"\t\t\tif ($predicate2)\n".
"\t\t\t{\n".
$this->multiLinePhp("\t\t\t\t\$DB->Query(\"", $ddl, "\");\n").
"\t\t\t}\n";
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\");");
$stmt->dependOn = $object->parent->getLowercasedName();
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
$stmt->addCondition($predicate2);
}
elseif ($object instanceof Trigger || $object instanceof Constraint)
{
$ddl = $object->getCreateDdl($this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($object->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$this->conditions[$cond][] = $this->multiLinePhp("\t\t\t\$DB->Query(\"", $ddl, "\", true);\n");
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\", true);");
$stmt->dependOn = $object->parent->getLowercasedName();
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
}
else
{
$this->conditions[""][] = "\t\t//create for ".get_class($object)." not supported yet\n";
$stmt = $this->createStatement("", "//create for ".get_class($object)." not supported yet", "");
}
if ($stmt)
{
$this->statements[] = $stmt;
}
}
/**
* @param BaseObject $object Database schema object.
*
* @return void
*/
protected function handleDrop(BaseObject $object)
{
if ($object instanceof Sequence || $object instanceof Procedure)
{
$ddl = $object->getDropDdl($this->dbType);
$this->conditions[""][] = "\t\t\$DB->Query(\"".EscapePHPString($ddl)."\", true);\n";
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\", true);");
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition("\$updater->TableExists(\"".EscapePHPString($this->tableCheck->getLowercasedName())."\")");
}
elseif ($object instanceof Table)
{
$ddl = $object->getDropDdl($this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($object->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$this->conditions[$cond][] = $this->multiLinePhp("\t\t\t\$DB->Query(\"", $ddl, "\");\n");
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\");");
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
}
elseif ($object instanceof Column)
{
$ddl = $object->getDropDdl($this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($object->parent->name)."\")";
$cond = "\t\tif ($predicate)\n";
$predicate2 = "\$DB->Query(\"SELECT ".EscapePHPString($object->name)." FROM ".EscapePHPString($object->parent->getLowercasedName())." WHERE 1=0\", true)";
$this->conditions[$cond][] =
"\t\t\tif ($predicate2)\n".
"\t\t\t{\n".
$this->multiLinePhp("\t\t\t\t\$DB->Query(\"", $ddl, "\");\n").
"\t\t\t}\n";
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\");");
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
$stmt->addCondition($predicate2);
}
elseif ($object instanceof Index)
{
$ddl = $object->getDropDdl($this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($object->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$predicate2 = "\$DB->IndexExists(\"".EscapePHPString($object->parent->getUnquotedName())."\", array(".$this->multiLinePhp("\"", $object->getUnquotedName($object->columns), "\", ")."))";
$this->conditions[$cond][] =
"\t\t\tif ($predicate2)\n".
"\t\t\t{\n".
$this->multiLinePhp("\t\t\t\t\$DB->Query(\"", $ddl, "\");\n").
"\t\t\t}\n";
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\");");
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
$stmt->addCondition($predicate2);
}
elseif ($object instanceof Trigger || $object instanceof Constraint)
{
$ddl = $object->getDropDdl($this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($object->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$this->conditions[$cond][] = $this->multiLinePhp("\t\t\t\$DB->Query(\"", $ddl, "\", true);\n");
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\", true);");
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
}
else
{
$this->conditions[""][] = "\t\t//drop for ".get_class($object)." not supported yet\n";
$stmt = $this->createStatement("", "//drop for ".get_class($object)." not supported yet", "");
}
if ($stmt)
{
$this->statements[] = $stmt;
}
}
/**
* @param BaseObject $source Source object.
* @param BaseObject $target Target object.
*
* @return void
*/
protected function handleChange(BaseObject $source, BaseObject $target)
{
if ($source instanceof Sequence || $source instanceof Procedure)
{
$this->conditions[""][] =
$this->multiLinePhp("\t\t\$DB->Query(\"", $source->getDropDdl($this->dbType), "\", true);\n").
$this->multiLinePhp("\t\t\$DB->Query(\"", $target->getCreateDdl($this->dbType), "\", true);\n");
$dropStmt = $this->createStatement("\$DB->Query(\"", $source->getDropDdl($this->dbType), "\", true);");
$createStmt = $this->createStatement("\$DB->Query(\"", $target->getCreateDdl($this->dbType), "\", true);");
$stmt = new Php\Statement;
$stmt->dependOn = $this->tableCheck->getLowercasedName();
$stmt->merge($dropStmt);
$stmt->merge($createStmt);
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition("\$updater->TableExists(\"".EscapePHPString($this->tableCheck->getLowercasedName())."\")");
}
elseif ($target instanceof Column)
{
$ddl = $source->getModifyDdl($target, $this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($source->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$predicate2 = "\$DB->Query(\"SELECT ".EscapePHPString($source->name)." FROM ".EscapePHPString($source->parent->getLowercasedName())." WHERE 1=0\", true)";
$this->conditions[$cond][] =
"\t\t\tif ($predicate2)\n".
"\t\t\t{\n".
$this->multiLinePhp("\t\t\t\t\$DB->Query(\"", $ddl, "\");\n").
"\t\t\t}\n";
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\");");
$stmt->dependOn = $source->parent->getLowercasedName();
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
$stmt->addCondition($predicate2);
}
elseif ($source instanceof Index)
{
$predicate = "\$updater->TableExists(\"".EscapePHPString($source->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$predicate2 = "\$DB->IndexExists(\"".EscapePHPString($source->parent->getUnquotedName())."\", array(".$this->multiLinePhp("\"", $source->getUnquotedName($source->columns), "\", ")."))";
$this->conditions[$cond][] =
"\t\t\tif ($predicate2)\n".
"\t\t\t{\n".
$this->multiLinePhp("\t\t\t\t\$DB->Query(\"", $source->getDropDdl($this->dbType), "\");\n").
$this->multiLinePhp("\t\t\t\t\$DB->Query(\"", $target->getCreateDdl($this->dbType), "\");\n").
"\t\t\t}\n";
$dropStmt = $this->createStatement("\$DB->Query(\"", $source->getDropDdl($this->dbType), "\", true);");
$createStmt = $this->createStatement("\$DB->Query(\"", $target->getCreateDdl($this->dbType), "\", true);");
$stmt = new Php\Statement;
$stmt->dependOn = $source->parent->getLowercasedName();
$stmt->merge($dropStmt);
$stmt->merge($createStmt);
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
$stmt->addCondition($predicate2);
$stmt->addCondition("!\$DB->IndexExists(\"".EscapePHPString($target->parent->getUnquotedName())."\", array(".$this->multiLinePhp("\"", $source->getUnquotedName($source->columns), "\", ")."))");
}
elseif ($source instanceof Trigger || $source instanceof Constraint)
{
$ddl = $source->getModifyDdl($target, $this->dbType);
$predicate = "\$updater->TableExists(\"".EscapePHPString($source->parent->getLowercasedName())."\")";
$cond = "\t\tif ($predicate)\n";
$this->conditions[$cond][] = $this->multiLinePhp("\t\t\t\$DB->Query(\"", $ddl, "\", true);\n");
$stmt = $this->createStatement("\$DB->Query(\"", $ddl, "\", true);");
$stmt->dependOn = $source->parent->getLowercasedName();
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"".EscapePHPString($this->dbType)."\"");
$stmt->addCondition($predicate);
}
else
{
$this->conditions[""][] = "\t\t//change for ".get_class($source)." not supported yet\n";
$stmt = $this->createStatement("", "//change for ".get_class($source)." not supported yet", "");
}
if ($stmt)
{
$this->statements[] = $stmt;
}
}
/**
* Returns escaped php code repeated for body? prefixed with $prefix and suffixed with $suffix.
*
* @param string $prefix Prefix string for each from body.
* @param array|string $body Strings to be escaped.
* @param string $suffix Suffix string for each from body.
*
* @return string
*/
protected function multiLinePhp($prefix, $body, $suffix)
{
$result = array();
if (is_array($body))
{
foreach ($body as $line)
{
$result[] = $prefix.EscapePHPString($line).$suffix;
}
}
else
{
$result[] = $prefix.EscapePHPString($body).$suffix;
}
return implode("", $result);
}
/**
* Returns Php\Statement object with escaped php code repeated for body? prefixed with $prefix and suffixed with $suffix.
*
* @param string $prefix Prefix string for each from body.
* @param array|string $body Strings to be escaped.
* @param string $suffix Suffix string for each from body.
*
* @return \Bitrix\Perfmon\Php\Statement
*/
protected function createStatement($prefix, $body, $suffix)
{
$result = new Php\Statement;
if (is_array($body))
{
foreach ($body as $line)
{
$result->addLine($prefix.EscapePHPString($line).$suffix);
}
}
else
{
$result->addLine($prefix.EscapePHPString($body).$suffix);
}
return $result;
}
}
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