<?php
use Zend\Db\Sql\Sql;
use Zend\Db\Sql\Select;
use Zend\Db\Adapter\Adapter;
$result = null;
/**
* Tells the DB Layer to start a DB transaction.
*
* @access public
*/
function serendipity_db_begin_transaction() {
global $serendipity;
$serendipity['dbConn']->getDriver()->getConnection()->beginTransaction();
}
/**
* Tells the DB Layer to end a DB transaction.
*
* @access public
* @param boolean If true, perform the query. If false, rollback.
*/
function serendipity_db_end_transaction($commit) {
global $serendipity;
if ($commit) {
$serendipity['dbConn']->getDriver()->getConnection()->commit();
} else {
$serendipity['dbConn']->getDriver()->getConnection()->rollback();
}
}
/**
* Assemble and return SQL condition for a "IN (...)" clause
*
* @access public
* @param string table column name
* @param array referenced array of values to search for in the "IN (...)" clause
* @param string condition of how to associate the different input values of the $search_ids parameter - NO EFFECT as this now is a real IN-clause
* @return string resulting SQL string
*/
function serendipity_db_in_sql($col, &$search_ids, $type = ' OR ') {
global $serendipity;
if(! is_array($search_ids) || count($search_ids) == 0) {
return "";
}
$sql = new Sql($serendipity['dbConn']);
$select = new Select();
$select->where->in($col, $search_ids);
return str_replace("WHERE", "", $sql->getSqlStringForSqlObject($select)); # the inserted WHERE is unexpected for the calling code
}
/**
* Perform a DB Layer SQL query.
*
* This function returns values dependin on the input parameters and the result of the query.
* It can return:
* false or a string if there was an error (depends on $expectError),
* true if the query succeeded but did not generate any rows
* array of field values if it returned a single row and $single is true
* array of array of field values if it returned row(s) [stacked array]
*
* @access public
* @param string SQL query to execute
* @param boolean Toggle whether the expected result is a single row (TRUE) or multiple rows (FALSE). This affects whether the returned array is 1 or 2 dimensional!
* @param string Result type of the array indexing. Can be one of "assoc" (associative), "num" (numerical), "both" (numerical and associative, default)
* @param boolean If true, errors will be reported. If false, errors will be ignored.
* @param string A possible array key name, so that you can control the multi-dimensional mapping of an array by the key column
* @param string A possible array field name, so that you can control the multi-dimensional mapping of an array by the key column and the field value.
* @param boolean If true, the executed SQL error is known to fail, and should be disregarded (errors can be ignored on DUPLICATE INDEX queries and the likes)
* @return mixed Returns the result of the SQL query, depending on the input parameters
*/
function &serendipity_db_query($sql, $single = false, $result_type = "both", $reportErr = false, $assocKey = false, $assocVal = false, $expectError = false) {
global $serendipity;
if ($single) {
$result = $serendipity['dbConn']->query($sql, Adapter::QUERY_MODE_EXECUTE);
$resultArray = $result->toArray();
$resultArray = $resultArray[0];
if (is_array($resultArray) && $result_type != "assoc") {
$i=0; # the underlying code expects additional numerical indices
foreach ($resultArray as $key=>$value) {
$resultArray[$i] = $value;
$i+=1;
}
}
} else {
$result = $serendipity['dbConn']->query($sql, Adapter::QUERY_MODE_EXECUTE);
if (method_exists($result, "toArray")) { # toArray doesn't exist when not SELECTing, checking prevents the error
$resultArray = $result->toArray();
if (count($resultArray) == 0) {
return 1;
}
}
}
return $resultArray;
}
/**
* Perform a sql-query with the now possible ? syntax for parameters
* @param string SQL query to exectue, for example "SELECT * from X where Y = ?
* @param array Parameters to insert into the sql-query
* @result mixed Returns the result of the SQL query, depending on the input parameters
*/
function serendipity_db_query2($sql, $parameters = array()) {
global $serendipity;
$result = $serendipity['dbConn']->query($sql, $parameters);
if (method_exists($result, "toArray")) {
return $result->toArray();
}
}
/**
* Returns the latest INSERT_ID of an SQL INSERT INTO command, for auto-increment columns
*
* @access public
* @return int Value of the auto-increment column
*/
function serendipity_db_insert_id() {
global $serendipity;
return $serendipity['dbConn']->getDriver()->getConnection()->getLastGeneratedValue();
}
/**
* Returns the number of affected rows of a SQL query
*
* @access public
* @return int Number of affected rows
*/
function serendipity_db_affected_rows() {
if ($result != null) {
return $result->getAffectedRows();
}
return 0;
}
/**
* Returns the number of updated rows in a SQL query
*
* @access public
* @return int Number of updated rows
*/
function serendipity_db_updated_rows() {
if ($result != null) {
return $result->getAffectedRows();
}
return 0;
}
/**
* Returns the number of matched rows in a SQL query
*
* @access public
* @return int Number of matched rows
*/
function serendipity_db_matched_rows() {
if ($result != null) {
return $result->getAffectedRows();
}
return 0;
}
/**
* Returns a escaped string, so that it can be safely included in a SQL string encapsulated within quotes, without allowing SQL injection.
*
* @access public
* @param string input string
* @return string output string
*/
function serendipity_db_escape_string($string) {
global $serendipity;
return substr($serendipity['dbConn']->getPlatform()->quoteValue($string), 1, -1); # quoteValue escapes and quotes, but outer quotation is done manually, hence the substr
}
/**
* Returns the option to a LIMIT SQL statement, because it varies across DB systems
*
* @access public
* @param int Number of the first row to return data from
* @param int Number of rows to return
* @return string SQL string to pass to a LIMIT statement
*/
function serendipity_db_limit($offset, $limit) {
global $serendipity;
$sql = new Sql($serendipity['dbConn']);
$select = new Select;
$select->limit($limit);
$select->offset($offset);
return str_replace("LIMIT", "", $sql->getSqlStringForSqlObject($select)); # TODO: Find a way to not hardcode the LIMIT here
}
/**
* Return a LIMIT SQL option to the DB Layer as a full LIMIT statement
*
* @access public
* @param SQL string of a LIMIT option
* @return SQL string containing a full LIMIT statement
*/
function serendipity_db_limit_sql($limitstring) {
return ' LIMIT ' . $limitstring; # TODO: Find a way to not hardcode the LIMIT here
}
/**
* Connect to the configured Database
*
* @access public
* @return resource connection handle
*/
function serendipity_db_connect() {
global $serendipity;
if (isset($serendipity['dbConn'])) {
return $serendipity['dbConn'];
}
$dbName = $serendipity['dbName'];
if ($serendipity['dbType'] == "pdo-sqlite" || $serendipity['dbType'] == "sqlite3" || $serendipity['dbType'] == 'sqlite3oo' || $serendipity['dbType'] == "sqlite") {
$dbName .= ".db"; # the old sqlite-wrapper appended this .db to the dbName, keep this for bc
}
$serendipity['dbConn'] = new Adapter(
array(
'driver' => $serendipity['dbType'],
'database' => $dbName,
'username' => $serendipity['dbUser'],
'password' => $serendipity['dbPass'],
'hostname' => $hash['dbHost']
)
);
return $serendipity['dbConn'];
}
function serendipity_db_reconnect() {
# That should never be necessary, should it?
}
/**
* Prepares a Serendipty query input to fully valid SQL. Replaces certain "template" variables.
*
* @access public
* @param string SQL query with template variables to convert
* @return resource SQL resource handle of the executed query
*/
function serendipity_db_schema_import($query) {
global $serendipity;
switch ($serendipity['dbType']) {
case 'mysqli':
case "mysql":
static $search = array('{AUTOINCREMENT}', '{PRIMARY}',
'{UNSIGNED}', '{FULLTEXT}', '{FULLTEXT_MYSQL}', '{BOOLEAN}', '{TEXT}');
static $replace = array('int(11) not null auto_increment', 'primary key',
'unsigned' , 'FULLTEXT', 'FULLTEXT', 'enum (\'true\', \'false\') NOT NULL default \'true\'', 'LONGTEXT');
static $is_utf8 = null;
if ($is_utf8 === null) {
$search[] = '{UTF_8}';
if ((isset($_POST['charset']) && $_POST['charset'] == 'UTF-8/') ||
$serendipity['charset'] == 'UTF-8/' ||
$serendipity['POST']['charset'] == 'UTF-8/' ||
LANG_CHARSET == 'UTF-8' ) {
$replace[] = '/*!40100 CHARACTER SET utf8 COLLATE utf8_unicode_ci */';
} else {
$replace[] = '';
}
}
break;
case 'pdo-postgres':
case "postgresql":
static $search = array('{AUTOINCREMENT}', '{PRIMARY}', '{UNSIGNED}',
'{FULLTEXT}', '{FULLTEXT_MYSQL}', '{BOOLEAN}', 'int(1)', 'int(10)', 'int(11)', 'int(4)', '{UTF_8}', '{TEXT}');
static $replace = array('SERIAL', 'primary key', '',
'', '', 'BOOLEAN NOT NULL', 'int2', 'int4', 'int4', 'int4', '', 'text');
break;
case 'sqlite3':
case 'sqlite3oo':
case 'pdo-sqlite':
case "sqlite":
static $search = array('{AUTOINCREMENT}', '{PRIMARY}', '{UNSIGNED}', '{FULLTEXT}', '{FULLTEXT_MYSQL}', '{BOOLEAN}', '{UTF_8}', '{TEXT}');
static $replace = array('INTEGER', 'PRIMARY KEY', '', '', '', 'BOOLEAN NOT NULL', '', 'LONGTEXT');
break;
default:
return true;
}
}
/**
* Try to connect to the configured Database (during installation)
*
* @access public
* @param array input configuration array, holding the connection info
* @param array referenced array which holds the errors that might be encountered
* @return boolean return true on success, false on error
*/
function serendipity_db_probe($hash, &$errs) {
$dbName = $hash['dbName'];
if ($hash['dbType'] == "pdo-sqlite" || $hash['dbType'] == "sqlite3" || $hash['dbType'] == "sqlite" || $hash['dbType'] == 'sqlite3oo') {
$dbName .= ".db"; # the old sqlite-wrapper appended this .db to the dbName, keep this for bc
}
$hash['dbConn'] = new Adapter(
array(
'driver' => $hash['dbType'],
'database' => $dbName,
'username' => $hash['dbUser'],
'password' => $hash['dbPass'],
'hostname' => $hash['dbHost']
)
);
try {
$hash['dbConn']->getDriver()->getConnection();
} catch( Exception $e ) {
$errs[] = ($e->getMessage());
}
}
/**
* Returns the SQL code used for concatenating strings
*
* @access public
* @param string Input string/column to concatenate
* @return string SQL parameter
*/
function serendipity_db_concat($string) {
global $serendipity;
switch($serendipity['dbType']) {
case 'pdo-postgres':
case 'postgres':
return '(' . str_replace(', ', '||', $string) . ')';
break;
default:
return 'concat(' . $string . ')';
break;
}
}
/* vim: set sts=4 ts=4 expandtab : */