/**
* @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();
$stmt->merge($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->name) . "\")";
$cond = "\t\tif ({$predicate})\n";
$predicate2 = "\$DB->Query(\"SELECT " . EscapePHPString($source->name) . " FROM " . EscapePHPString($source->parent->name) . " 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) . "\"");
$stmt->addCondition("\$updater->TableExists(\"" . EscapePHPString($source->parent->getLowercasedName()) . "\")");
$stmt->addCondition("\$DB->Query(\"SELECT " . EscapePHPString($source->name) . " FROM " . EscapePHPString($source->parent->getLowercasedName()) . " WHERE 1=0\", true)");
} elseif ($source instanceof Index) {
$this->conditions["\t\tif (\$updater->TableExists(\"" . EscapePHPString($source->parent->name) . "\"))\n"][] = "\t\t\tif (\$DB->IndexExists(\"" . EscapePHPString($source->parent->name) . "\", array(" . $this->multiLinePhp("\"", $source->columns, "\", ") . ")))\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();
$stmt->merge($dropStmt);
$stmt->merge($createStmt);
$stmt->addCondition("\$updater->CanUpdateDatabase()");
$stmt->addCondition("\$DB->type == \"" . EscapePHPString($this->dbType) . "\"");
$stmt->addCondition("\$updater->TableExists(\"" . EscapePHPString($source->parent->getLowercasedName()) . "\")");
$stmt->addCondition("\$DB->IndexExists(\"" . EscapePHPString($source->parent->getLowercasedName()) . "\", array(" . $this->multiLinePhp("\"", $source->columns, "\", ") . "))");
$stmt->addCondition("!\$DB->IndexExists(\"" . EscapePHPString($target->parent->getLowercasedName()) . "\", array(" . $this->multiLinePhp("\"", $target->columns, "\", ") . "))");
} elseif ($source instanceof Trigger || $source instanceof Constraint) {
$ddl = $source->getModifyDdl($target, $this->dbType);
$predicate = "\$updater->TableExists(\"" . EscapePHPString($source->parent->name) . "\")";
$cond = "\t\tif ({$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) . "\"");
$stmt->addCondition("\$updater->TableExists(\"" . EscapePHPString($source->parent->getLowercasedName()) . "\")");
} 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;
}
}
