/Genv/Db/Adapter.php
PHP | 1099 lines | 764 code | 151 blank | 184 comment | 67 complexity | 1b053e3bce597cc95a9eff00c8ceeb67 MD5 | raw file
- <?php
- /**
- * Genv数据库适配器
- * 定义通用的数据库适配接口
- * 改编自 ezsql;
- *
- */
- define('EZSQL_VERSION','2.17');
- define('OBJECT','OBJECT',true);
- define('ARRAY_A','ARRAY_A',true);
- define('ARRAY_N','ARRAY_N',true);
- define('DB_COLLATE', '');
- abstract class Genv_Db_Adapter extends Genv_Base {
-
- protected $_Genv_Sql_Adapter = array(
- 'host' => null,
- 'port' => null,
- 'sock' => null,
- 'user' => null,
- 'pass' => null,
- 'name' => null,
- 'profiling' => false,
- 'cache' => array('adapter' => 'Genv_Cache_Adapter_Var'),
- );
- var $trace = false; // same as $debug_all
- var $debug_all = false; // same as $trace
- var $debug_called = false;
- var $vardump_called = false;
- var $show_errors = true;
- var $num_queries = 0;
- var $last_query = null;
- var $queries = array();
- var $last_error = null;
- var $col_info = null;
- var $captured_errors = array();
- var $cache_dir = false;
- var $cache_queries = false;
- var $cache_inserts = false;
- var $use_disk_cache = false;
- var $cache_timeout = 24; // hours
- var $timers = array();
- var $total_query_time = 0;
- var $db_connect_time = 0;
- var $trace_log = array();
- var $use_trace_log = false;
- var $sql_log_file = false;
- var $do_profile = false;
- var $profile_times = array();
- // == TJH == default now needed for echo of debug function
- var $debug_echo_is_on = true;
- var $field_types = array();
-
- protected $_ident_quote_prefix = null;
- protected $_ident_quote_suffix = null;
-
- protected function _postConstruct(){
- parent::_postConstruct();
-
- }
-
- /**********************************************************************
- * Print SQL/DB error - over-ridden by specific DB class
- */
- function register_error($err_str)
- {
- // Keep track of last error
- $this->last_error = $err_str;
- // Capture all errors to an error array no matter what happens
- $this->captured_errors[] = array
- (
- 'error_str' => $err_str,
- 'query' => $this->last_query
- );
- }
- /**********************************************************************
- * Turn error handling on or off..
- */
- function show_errors()
- {
- $this->show_errors = true;
- }
- function hide_errors()
- {
- $this->show_errors = false;
- }
- /**********************************************************************
- * Kill cached query results
- */
- function flush()
- {
- // Get rid of these
- $this->last_result = null;
- $this->col_info = null;
- $this->last_query = null;
- $this->from_disk_cache = false;
- }
- /**********************************************************************
- * Get one variable from the DB - see docs for more detail
- */
- function get_var($query=null,$x=0,$y=0)
- {
- // Log how the function was called
- $this->func_call = "\$db->get_var(\"$query\",$x,$y)";
- // If there is a query then perform it if not then use cached results..
- if ( $query )
- {
- $this->query($query);
- }
- // Extract var out of cached results based x,y vals
- if ( $this->last_result[$y] )
- {
- $values = array_values(get_object_vars($this->last_result[$y]));
- }
- // If there is a value return it else return null
- return (isset($values[$x]) && $values[$x]!=='')?$values[$x]:null;
- }
- /**********************************************************************
- * Get one row from the DB - see docs for more detail
- */
- function get_row($query=null,$output=ARRAY_A,$y=0)
- {
- // Log how the function was called
- $this->func_call = "\$db->get_row(\"$query\",$output,$y)";
- // If there is a query then perform it if not then use cached results..
- if ( $query )
- {
- $this->query($query);
- }
- // If the output is an object then return object using the row offset..
- if ( $output == OBJECT )
- {
- return $this->last_result[$y]?$this->last_result[$y]:null;
- }
- // If the output is an associative array then return row as such..
- elseif ( $output == ARRAY_A )
- {
- return $this->last_result[$y]?get_object_vars($this->last_result[$y]):null;
- }
- // If the output is an numerical array then return row as such..
- elseif ( $output == ARRAY_N )
- {
- return $this->last_result[$y]?array_values(get_object_vars($this->last_result[$y])):null;
- }
- // If invalid output type was specified..
- else
- {
- $this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N");
- }
- }
- /**********************************************************************
- * Function to get 1 column from the cached result set based in X index
- * see docs for usage and info
- */
- function get_col($query=null,$x=0)
- {
- $new_array = array();
- // If there is a query then perform it if not then use cached results..
- if ( $query )
- {
- $this->query($query);
- }
- // Extract the column values
- for ( $i=0; $i < count($this->last_result); $i++ )
- {
- $new_array[$i] = $this->get_var(null,$x,$i);
- }
- return $new_array;
- }
- /**********************************************************************
- * Return the the query as a result set - see docs for more details
- */
- function get_results($query=null, $output = ARRAY_A)
- {
- // Log how the function was called
- $this->func_call = "\$db->get_results(\"$query\", $output)";
- // If there is a query then perform it if not then use cached results..
- if ( $query )
- {
- $this->query($query);
- }
- // Send back array of objects. Each row is an object
- if ( $output == OBJECT )
- {
- return $this->last_result;
- }
- elseif ( $output == ARRAY_A || $output == ARRAY_N )
- {
- if ( $this->last_result )
- {
- $i=0;
- foreach( $this->last_result as $row )
- {
- $new_array[$i] = get_object_vars($row);
- if ( $output == ARRAY_N )
- {
- $new_array[$i] = array_values($new_array[$i]);
- }
- $i++;
- }
- return $new_array;
- }
- else
- {
- return null;
- }
- }
- }
- /**********************************************************************
- * Function to get column meta data info pertaining to the last query
- * see docs for more info and usage
- */
- function get_col_info($info_type="name",$col_offset=-1)
- {
- if ( $this->col_info )
- {
- if ( $col_offset == -1 )
- {
- $i=0;
- foreach($this->col_info as $col )
- {
- $new_array[$i] = $col->{$info_type};
- $i++;
- }
- return $new_array;
- }
- else
- {
- return $this->col_info[$col_offset]->{$info_type};
- }
- }
- }
- /**********************************************************************
- * store_cache
- */
- function store_cache($query,$is_insert)
- {
- // The would be cache file for this query
- $cache_file = $this->cache_dir.'/'.md5($query);
- // disk caching of queries
- if ( $this->use_disk_cache && ( $this->cache_queries && ! $is_insert ) || ( $this->cache_inserts && $is_insert ))
- {
- if ( ! is_dir($this->cache_dir) )
- {
- $this->register_error("Could not open cache dir: $this->cache_dir");
- $this->show_errors ? trigger_error("Could not open cache dir: $this->cache_dir",E_USER_WARNING) : null;
- }
- else
- {
- // Cache all result values
- $result_cache = array
- (
- 'col_info' => $this->col_info,
- 'last_result' => $this->last_result,
- 'num_rows' => $this->num_rows,
- 'return_value' => $this->num_rows,
- );
- error_log ( serialize($result_cache), 3, $cache_file);
- }
- }
- }
- /**********************************************************************
- * get_cache
- */
- function get_cache($query)
- {
- // The would be cache file for this query
- $cache_file = $this->cache_dir.'/'.md5($query);
- // Try to get previously cached version
- if ( $this->use_disk_cache && file_exists($cache_file) )
- {
- // Only use this cache file if less than 'cache_timeout' (hours)
- if ( (time() - filemtime($cache_file)) > ($this->cache_timeout*3600) )
- {
- unlink($cache_file);
- }
- else
- {
- $result_cache = unserialize(file_get_contents($cache_file));
- $this->col_info = $result_cache['col_info'];
- $this->last_result = $result_cache['last_result'];
- $this->num_rows = $result_cache['num_rows'];
- $this->from_disk_cache = true;
- // If debug ALL queries
- $this->trace || $this->debug_all ? $this->debug() : null ;
- return $result_cache['return_value'];
- }
- }
- }
- /**********************************************************************
- * Dumps the contents of any input variable to screen in a nicely
- * formatted and easy to understand way - any type: Object, Var or Array
- */
- function vardump($mixed='')
- {
- // Start outup buffering
- ob_start();
- echo "<p><table><tr><td bgcolor=ffffff><blockquote><font color=000090>";
- echo "<pre><font face=arial>";
- if ( ! $this->vardump_called )
- {
- echo "<font color=800080><b>ezSQL</b> (v".EZSQL_VERSION.") <b>Variable Dump..</b></font>\n\n";
- }
- $var_type = gettype ($mixed);
- print_r(($mixed?$mixed:"<font color=red>No Value / False</font>"));
- echo "\n\n<b>Type:</b> " . ucfirst($var_type) . "\n";
- echo "<b>Last Query</b> [$this->num_queries]<b>:</b> ".($this->last_query?$this->last_query:"NULL")."\n";
- echo "<b>Last Function Call:</b> " . ($this->func_call?$this->func_call:"None")."\n";
- echo "<b>Last Rows Returned:</b> ".count($this->last_result)."\n";
- echo "</font></pre></font></blockquote></td></tr></table>";
- echo "\n<hr size=1 noshade color=dddddd>";
- // Stop output buffering and capture debug HTML
- $html = ob_get_contents();
- ob_end_clean();
- // Only echo output if it is turned on
- if ( $this->debug_echo_is_on )
- {
- echo $html;
- }
- $this->vardump_called = true;
- return $html;
- }
- /**********************************************************************
- * Alias for the above function
- */
- function dumpvar($mixed)
- {
- $this->vardump($mixed);
- }
- /**********************************************************************
- * Displays the last query string that was sent to the database & a
- * table listing results (if there were any).
- * (abstracted into a seperate file to save server overhead).
- */
- function debug($print_to_screen=true)
- {
- // Start outup buffering
- ob_start();
- echo "<blockquote>";
- // Only show ezSQL credits once..
- if ( ! $this->debug_called )
- {
- echo "<font color=800080 face=arial size=2><b>ezSQL</b> (v".EZSQL_VERSION.") <b>Debug..</b></font><p>\n";
- }
- if ( $this->last_error )
- {
- echo "<font face=arial size=2 color=000099><b>Last Error --</b> [<font color=000000><b>$this->last_error</b></font>]<p>";
- }
- if ( $this->from_disk_cache )
- {
- echo "<font face=arial size=2 color=000099><b>Results retrieved from disk cache</b></font><p>";
- }
- echo "<font face=arial size=2 color=000099><b>Query</b> [$this->num_queries] <b>--</b> ";
- echo "[<font color=000000><b>$this->last_query</b></font>]</font><p>";
- echo "<font face=arial size=2 color=000099><b>Query Result..</b></font>";
- echo "<blockquote>";
- if ( $this->col_info )
- {
- // =====================================================
- // Results top rows
- echo "<table cellpadding=5 cellspacing=1 bgcolor=555555>";
- echo "<tr bgcolor=eeeeee><td nowrap valign=bottom><font color=555599 face=arial size=2><b>(row)</b></font></td>";
- for ( $i=0; $i < count($this->col_info); $i++ )
- {
- echo "<td nowrap align=left valign=top><font size=1 color=555599 face=arial>{$this->col_info[$i]->type} {$this->col_info[$i]->max_length}</font><br><span style='font-family: arial; font-size: 10pt; font-weight: bold;'>{$this->col_info[$i]->name}</span></td>";
- }
- echo "</tr>";
- // ======================================================
- // print main results
- if ( $this->last_result )
- {
- $i=0;
- foreach ( $this->get_results(null,ARRAY_N) as $one_row )
- {
- $i++;
- echo "<tr bgcolor=ffffff><td bgcolor=eeeeee nowrap align=middle><font size=2 color=555599 face=arial>$i</font></td>";
- foreach ( $one_row as $item )
- {
- echo "<td nowrap><font face=arial size=2>$item</font></td>";
- }
- echo "</tr>";
- }
- } // if last result
- else
- {
- echo "<tr bgcolor=ffffff><td colspan=".(count($this->col_info)+1)."><font face=arial size=2>No Results</font></td></tr>";
- }
- echo "</table>";
- } // if col_info
- else
- {
- echo "<font face=arial size=2>No Results</font>";
- }
- echo "</blockquote></blockquote> <hr noshade color=dddddd size=1>";
- // Stop output buffering and capture debug HTML
- $html = ob_get_contents();
- ob_end_clean();
- // Only echo output if it is turned on
- if ( $this->debug_echo_is_on && $print_to_screen)
- {
- echo $html;
- }
- $this->debug_called = true;
- return $html;
- }
- /**********************************************************************
- * Timer related functions
- */
- function timer_get_cur()
- {
- list($usec, $sec) = explode(" ",microtime());
- return ((float)$usec + (float)$sec);
- }
- function timer_start($timer_name)
- {
- $this->timers[$timer_name] = $this->timer_get_cur();
- }
- function timer_elapsed($timer_name)
- {
- return round($this->timer_get_cur() - $this->timers[$timer_name],2);
- }
- function timer_update_global($timer_name)
- {
- if ( $this->do_profile )
- {
- $this->profile_times[] = array
- (
- 'query' => $this->last_query,
- 'time' => $this->timer_elapsed($timer_name)
- );
- }
-
- $this->total_query_time += $this->timer_elapsed($timer_name);
- }
-
-
- public function get_set($data,$format=null){
- $formats = $format = (array) $format;
- $fields = array_keys( $data );
- $formatted_fields = array();
- foreach ( $fields as $field ) {
- if ( !empty( $format ) )
- $form = ( $form = array_shift( $formats ) ) ? $form : $format[0];
- elseif ( isset( $this->field_types[$field] ) )
- $form = $this->field_types[$field];
- else
- $form = '%s';
- $formatted_fields[] ="`$field` = {$form}";// '`' . $this->escape($field). '`='.$form.'';
- }
- $values=array_values($data);
- $formatted_values = array();
- foreach ( $values as $val ) {
- if ( $val === 'true' ) $val = 1;
- if ( $val === 'false' ) $val = 0;
- if ( $val == 'NOW()' ){
- $val = $this->escape($val) ;
- }else{
- $val = $this->escape($val) ;
- }
- $formatted_values[]=$val;
- }
- if (sizeof($formatted_fields) != sizeof($formatted_values)) {
- return false;
- }
- return $this->prepare(implode(' , ',$formatted_fields), $formatted_values);
-
- }
- /**
- * Insert a row into a table.
- *
- * <code>
- * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 'bar' ) )
- * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) )
- * </code>
- *
- * @since 2.5.0
- * @see wpdb::prepare()
- * @see wpdb::$field_types
- * @see wp_set_wpdb_vars()
- *
- * @param string $table table name
- * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
- * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
- * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
- * @return int|false The number of rows inserted, or false on error.
- */
- function insert( $table, $data, $format = null ) {
- return $this->_insert_replace_helper( $table, $data, $format, 'INSERT' );
- }
- /**
- * Replace a row into a table.
- *
- * <code>
- * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 'bar' ) )
- * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) )
- * </code>
- *
- * @since 3.0.0
- * @see wpdb::prepare()
- * @see wpdb::$field_types
- * @see wp_set_wpdb_vars()
- *
- * @param string $table table name
- * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
- * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
- * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
- * @return int|false The number of rows affected, or false on error.
- */
- function replace( $table, $data, $format = null ) {
- return $this->_insert_replace_helper( $table, $data, $format, 'REPLACE' );
- }
- function _insert_replace_helper( $table, $data, $format = null, $type = 'INSERT' ) {
- if ( ! in_array( strtoupper( $type ), array( 'REPLACE', 'INSERT' ) ) )
- return false;
- $table = $this->quoteName($table);
- $sql = "{$type} INTO $table SET ";
-
- $sql.=$this->get_set($data,$format);
-
- return $this->query( $sql );
- }
- /**
- * Update a row in the table
- *
- * <code>
- * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 'bar' ), array( 'ID' => 1 ) )
- * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( 'ID' => 1 ), array( '%s', '%d' ), array( '%d' ) )
- * </code>
- *
- * @since 2.5.0
- * @see wpdb::prepare()
- * @see wpdb::$field_types
- * @see wp_set_wpdb_vars()
- *
- * @param string $table table name
- * @param array $data Data to update (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
- * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw".
- * @param array|string $format Optional. An array of formats to be mapped to each of the values in $data. If string, that format will be used for all of the values in $data.
- * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
- * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $where will be treated as strings.
- * @return int|false The number of rows updated, or false on error.
- */
-
-
-
- public function update($table, $data, $where,$format=null){
- // the base statement
- $table = $this->quoteName($table);
- $sql = "UPDATE $table SET ";
- $sql.=$this->get_set($data,$format);
- $sql.=' where '.$where;
- return $this->query($sql);
-
- }
- public function delete($table, $where){
-
- $table = $this->quoteName($table);
- //$where=$options['where'];
- $result = $this->query("DELETE FROM $table WHERE $where");
- return $result;
- }
-
-
-
- /**
- * Retrieve the name of the function that called wpdb.
- *
- * Searches up the list of functions until it reaches
- * the one that would most logically had called this method.
- *
- * @since 2.5.0
- *
- * @return string The name of the calling function
- */
- function get_caller() {
- $trace = array_reverse( debug_backtrace() );
- $caller = array();
- foreach ( $trace as $call ) {
- if ( isset( $call['class'] ) && __CLASS__ == $call['class'] )
- continue; // Filter out wpdb calls.
- $caller[] = isset( $call['class'] ) ? "{$call['class']}->{$call['function']}" : $call['function'];
- }
- return join( ', ', $caller );
- }
- /*---------------------------------------*/
- function logs($sql){
- $config = array(
- 'adapter' => 'Genv_Log_Adapter_File',
- 'events' => '*',
- 'file' => Genv_Config::get('Genv','appname').'/Data/Logs/sql.log.txt',
- );
- $log = Genv::factory('Genv_Log', $config);
- $log->save($sql,'','');
- }
- public function quoteInto($text, $data){
- // how many question marks are there?
- $count = substr_count($text, '?');
- if (! $count) {
- // no replacements needed
- return $text;
- }
-
- // only one replacement?
- if ($count == 1) {
- $data = $this->quote($data);
- $text = str_replace('?', $data, $text);
- return $text;
- }
-
- // more than one replacement; force values to be an array, then make
- // sure we have enough values to replace all the placeholders.
- settype($data, 'array');
- if (count($data) < $count) {
- // more placeholders than values
- throw $this->_exception('ERR_NOT_ENOUGH_VALUES', array(
- 'text' => $text,
- 'data' => $data,
- ));
- }
-
- // replace each placeholder with a quoted value
- $offset = 0;
- foreach ($data as $val) {
- // find the next placeholder
- $pos = strpos($text, '?', $offset);
- if ($pos === false) {
- // no more placeholders, exit the data loop
- break;
- }
-
- // replace this question mark with a quoted value
- $val = $this->quote($val);
- $text = substr_replace($text, $val, $pos, 1);
-
- // update the offset to move us past the quoted value
- $offset = $pos + strlen($val);
- }
-
- return $text;
- }
- public function quoteName($spec)
- {
- if (is_array($spec)) {
- foreach ($spec as $key => $val) {
- $spec[$key] = $this->quoteName($val);
- }
- return $spec;
- }
-
- // no extraneous spaces
- $spec = trim($spec);
-
- // `original` AS `alias` ... note the 'rr' in strripos
- $pos = strripos($spec, ' AS ');
- if ($pos) {
- // recurse to allow for "table.col"
- $orig = $this->quoteName(substr($spec, 0, $pos));
- // use as-is
- $alias = $this->_quoteName(substr($spec, $pos + 4));
- return "$orig AS $alias";
- }
-
- // `original` `alias`
- $pos = strrpos($spec, ' ');
- if ($pos) {
- // recurse to allow for "table.col"
- $orig = $this->quoteName(substr($spec, 0, $pos));
- // use as-is
- $alias = $this->_quoteName(substr($spec, $pos + 1));
- return "$orig $alias";
- }
-
- // `table`.`column`
- $pos = strrpos($spec, '.');
- if ($pos) {
- // use both as-is
- $table = $this->_quoteName(substr($spec, 0, $pos));
- $col = $this->_quoteName(substr($spec, $pos + 1));
- return "$table.$col";
- }
-
- // `name`
- return $this->_quoteName($spec);
- }
-
-
- protected function _quoteName($name)
- {
- $name = trim($name);
- if ($name == '*') {
- return $name;
- } else {
- return $this->_ident_quote_prefix
- . $name
- . $this->_ident_quote_suffix;
- }
- }
-
- public function quoteNamesIn($spec)
- {
- if (is_array($spec)) {
- foreach ($spec as $key => $val) {
- $spec[$key] = $this->quoteNamesIn($val);
- }
- return $spec;
- }
-
- // single and double quotes
- $apos = "'";
- $quot = '"';
-
- // look for ', ", \', or \" in the string.
- // match closing quotes against the same number of opening quotes.
- $list = preg_split(
- "/(($apos+|$quot+|\\$apos+|\\$quot+).*?\\2)/",
- $spec,
- -1,
- PREG_SPLIT_DELIM_CAPTURE
- );
-
- // concat the pieces back together, quoting names as we go.
- $spec = null;
- $last = count($list) - 1;
- foreach ($list as $key => $val) {
-
- // skip elements 2, 5, 8, 11, etc. as artifacts of the back-
- // referenced split; these are the trailing/ending quote
- // portions, and already included in the previous element.
- // this is the same as every third element from zero.
- if (($key+1) % 3 == 0) {
- continue;
- }
-
- // is there an apos or quot anywhere in the part?
- $is_string = strpos($val, $apos) !== false ||
- strpos($val, $quot) !== false;
-
- if ($is_string) {
- // string literal
- $spec .= $val;
- } else {
- // sql language.
- // look for an AS alias if this is the last element.
- if ($key == $last) {
- // note the 'rr' in strripos
- $pos = strripos($val, ' AS ');
- if ($pos) {
- // quote the alias name directly
- $alias = $this->_quoteName(substr($val, $pos + 4));
- $val = substr($val, 0, $pos) . " AS $alias";
- }
- }
-
- // now quote names in the language.
- $spec .= $this->_quoteNamesIn($val);
- }
- }
-
- // done!
- return $spec;
- }
-
-
- protected function _quoteNamesIn($text)
- {
- $word = "[a-z_][a-z0-9_]+";
-
- $find = "/(\\b)($word)\\.($word)(\\b)/i";
-
- $repl = '$1'
- . $this->_ident_quote_prefix
- . '$2'
- . $this->_ident_quote_suffix
- . '.'
- . $this->_ident_quote_prefix
- . '$3'
- . $this->_ident_quote_suffix
- . '$4'
- ;
-
- $text = preg_replace($find, $repl, $text);
-
- return $text;
- }
- public function fetchSql($spec,$data=array()){
- // build the statement from its component parts if needed
- if (is_array($spec)) {
- // dump($spec);
- // echo $this->_select($spec,$data);
- return $this->_select($spec,$data);
- } else {
-
- return $spec;
- }
- }
- public function fetchValue($spec, $data = array())
- {
- if (is_array($spec)) {
- // automatically limit to the first row only,
- // but leave the offset alone.
- $spec['limit']['count'] = 1;
- }
- $sql= $this->fetchSql($spec,$data);
-
- $result = $this->get_row($sql);
- return $result['genvid'];
- // return $result->fetchColumn(0);
- }
-
-
- protected function _select($parts,$data){
- // buid the statment
- if (empty($parts['compound'])) {
- $stmt = $this->_selectSingle($parts);
- } else {
- $stmt = $this->_selectCompound($parts);
- }
-
- // modify per adapter
- $this->_modSelect($stmt, $parts);
- foreach($data as $key=>$v){
-
- $stmt=str_replace(":$key",$this->quoteValue($v), $stmt);
- }
- //dump($stmt);
-
- if($data){
-
- $stmt=vsprintf($stmt, array_map(array($this, 'quoteValue'), $data));
- }
- return $stmt;
- }
-
-
- protected function _selectSingle($parts)
- {
- $default = array(
- 'distinct' => null,
- 'cols' => array(),
- 'from' => array(),
- 'join' => array(),
- 'where' => array(),
- 'group' => array(),
- 'having' => array(),
- 'order' => array(),
- );
-
- $parts = array_merge($default, $parts);
-
- // is this a SELECT or SELECT DISTINCT?
- if ($parts['distinct']) {
- $stmt = "SELECT DISTINCT\n ";
- } else {
- $stmt = "SELECT\n ";
- }
-
- // add columns
- $stmt .= implode(",\n ", $parts['cols']) . "\n";
-
- // from these tables
- $stmt .= $this->_selectSingleFrom($parts['from']);
-
- // joined to these tables
- if ($parts['join']) {
- $list = array();
- foreach ($parts['join'] as $join) {
- $tmp = '';
- // add the type (LEFT, INNER, etc)
- if (! empty($join['type'])) {
- $tmp .= $join['type'] . ' ';
- }
- // add the table name and condition
- $tmp .= 'JOIN ' . $join['name'];
- $tmp .= ' ON ' . $join['cond'];
- // add to the list
- $list[] = $tmp;
- }
- // add the list of all joins
- $stmt .= implode("\n", $list) . "\n";
- }
-
- // with these where conditions
- if ($parts['where']) {
- $stmt .= "WHERE\n ";
- $stmt .= implode("\n ", $parts['where']) . "\n";
- }
-
- // grouped by these columns
- if ($parts['group']) {
- $stmt .= "GROUP BY\n ";
- $stmt .= implode(",\n ", $parts['group']) . "\n";
- }
-
- // having these conditions
- if ($parts['having']) {
- $stmt .= "HAVING\n ";
- $stmt .= implode("\n ", $parts['having']) . "\n";
- }
-
- // ordered by these columns
- if ($parts['order']) {
- $stmt .= "ORDER BY\n ";
- $stmt .= implode(",\n ", $parts['order']) . "\n";
- }
-
- // done!
- return $stmt;
- }
-
- protected function _selectSingleFrom($from){
- return "FROM\n "
- . implode(",\n ", $from)
- . "\n";
- }
-
-
- protected function _selectCompound($parts)
- {
- // the select statement to build up
- $stmt = '';
-
- // default parts of each 'compound' element
- $default = array(
- 'type' => null, // 'UNION', 'UNION ALL', etc.
- 'spec' => null, // array or string for the SELECT statement
- );
-
- // combine the compound elements
- foreach ((array) $parts['compound'] as $compound) {
-
- // make sure we have the default elements
- $compound = array_merge($default, $compound);
-
- // is it an array of select parts?
- if (is_array($compound['spec'])) {
- // yes, build a select string from them
- $select = $this->_select($compound['spec']);
- } else {
- // no, assume it's already a select string
- $select = $compound['spec'];
- }
-
- // do we need to add the compound type?
- // note that the first compound type will be ignored.
- if ($stmt) {
- $stmt .= strtoupper($compound['type']) . "\n";
- }
-
- // now add the select itself
- $stmt .= "(" . $select . ")\n";
- }
-
- // add any overall order
- if (! empty($parts['order'])) {
- $stmt .= "ORDER BY\n ";
- $stmt .= implode(",\n ", $parts['order']) . "\n";
- }
-
- // done!
- return $stmt;
- }
-
- protected function _modSelect(&$stmt, &$parts){
- // determine count
- $count = ! empty($parts['limit']['count'])
- ? (int) $parts['limit']['count']
- : 0;
-
- // determine offset
- $offset = ! empty($parts['limit']['offset'])
- ? (int) $parts['limit']['offset']
- : 0;
-
- // add the count and offset
- if ($count > 0) {
- $stmt .= "LIMIT $count";
- if ($offset > 0) {
- $stmt .= " OFFSET $offset";
- }
- }
- }
- }