265 lines
8.5 KiB
PHP
265 lines
8.5 KiB
PHP
<?php
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namespace ZM;
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require_once('database.php');
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$object_cache = array();
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class ZM_Object {
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public function __construct($IdOrRow = NULL) {
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$class = get_class($this);
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$row = NULL;
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if ( $IdOrRow ) {
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if ( is_integer($IdOrRow) or ctype_digit($IdOrRow) ) {
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$table = $class::$table;
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$row = dbFetchOne("SELECT * FROM `$table` WHERE `Id`=?", NULL, array($IdOrRow));
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if ( !$row ) {
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Error("Unable to load $class record for Id=$IdOrRow");
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}
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} elseif ( is_array($IdOrRow) ) {
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$row = $IdOrRow;
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}
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if ( $row ) {
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global $object_cache;
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if ( ! isset($object_cache[$class]) ) {
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$object_cache[$class] = array();
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}
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$cache = &$object_cache[$class];
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foreach ($row as $k => $v) {
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$this->{$k} = $v;
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}
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$cache[$row['Id']] = $this;
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}
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} else {
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# Set defaults
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foreach ( $this->defaults as $k => $v ) $this->{$k} = $v;
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} # end if isset($IdOrRow)
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} # end function __construct
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public function __call($fn, array $args){
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if ( count($args) ) {
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$this->{$fn} = $args[0];
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}
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if ( array_key_exists($fn, $this) ) {
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return $this->{$fn};
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} else {
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if ( array_key_exists($fn, $this->defaults) ) {
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return $this->defaults{$fn};
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} else {
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$backTrace = debug_backtrace();
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Warning("Unknown function call Object->$fn from ".print_r($backTrace,true));
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}
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}
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}
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public static function _find($class, $parameters = null, $options = null ) {
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$table = $class::$table;
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$filters = array();
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$sql = "SELECT * FROM `$table` ";
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$values = array();
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if ( $parameters ) {
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$fields = array();
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$sql .= 'WHERE ';
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foreach ( $parameters as $field => $value ) {
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if ( $value == null ) {
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$fields[] = '`'.$field.'` IS NULL';
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} else if ( is_array($value) ) {
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$func = function(){return '?';};
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$fields[] = '`'.$field.'` IN ('.implode(',', array_map($func, $value)). ')';
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$values += $value;
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} else {
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$fields[] = '`'.$field.'`=?';
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$values[] = $value;
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}
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}
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$sql .= implode(' AND ', $fields );
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}
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if ( $options ) {
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if ( isset($options['order']) ) {
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$sql .= ' ORDER BY ' . $options['order'];
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}
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if ( isset($options['limit']) ) {
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if ( is_integer($options['limit']) or ctype_digit($options['limit']) ) {
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$sql .= ' LIMIT ' . $options['limit'];
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} else {
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Error('Invalid value for limit('.$options['limit'].') passed to '.get_class()."::find from ".print_r($backTrace,true));
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return array();
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}
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}
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}
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$rows = dbFetchAll($sql, NULL, $values);
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$results = array();
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if ( $rows ) {
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foreach ( $rows as $row ) {
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array_push($results , new $class($row));
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}
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}
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return $results;
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} # end public function _find()
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public static function _find_one($class, $parameters = array(), $options = array() ) {
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global $object_cache;
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if ( ! isset($object_cache[$class]) )
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$object_cache[$class] = array();
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$cache = &$object_cache[$class];
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if (
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( count($parameters) == 1 ) and
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isset($parameters['Id']) and
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isset($cache[$parameters['Id']]) ) {
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return $cache[$parameters['Id']];
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}
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$options['limit'] = 1;
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$results = ZM_Object::_find($class, $parameters, $options);
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if ( ! sizeof($results) ) {
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return;
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}
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return $results[0];
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}
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public static function Objects_Indexed_By_Id($class) {
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$results = array();
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foreach ( ZM_Object::_find($class, null, array('order'=>'lower(Name)')) as $Object ) {
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$results[$Object->Id()] = $Object;
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}
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return $results;
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}
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public function to_json() {
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$json = array();
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foreach ($this->defaults as $key => $value) {
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if ( is_callable(array($this, $key)) ) {
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$json[$key] = $this->$key();
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} else if ( array_key_exists($key, $this) ) {
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$json[$key] = $this->{$key};
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} else {
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$json[$key] = $this->defaults{$key};
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}
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}
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return json_encode($json);
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}
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public function set($data) {
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foreach ( $data as $k => $v ) {
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if ( method_exists($this, $k) ) {
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$this->{$k}($v);
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} else {
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if ( is_array($v) ) {
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# perhaps should turn into a comma-separated string
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$this->{$k} = implode(',', $v);
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} else if ( is_string($v) ) {
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if ( $v == '' and array_key_exists($k, $this->defaults) ) {
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$this->{$k} = $this->defaults[$k];
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} else {
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$this->{$k} = trim($v);
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}
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} else if ( is_integer($v) ) {
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$this->{$k} = $v;
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} else if ( is_bool($v) ) {
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$this->{$k} = $v;
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} else if ( is_null($v) ) {
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$this->{$k} = $v;
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} else {
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Error("Unknown type $k => $v of var " . gettype($v));
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$this->{$k} = $v;
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}
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} # end if method_exists
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} # end foreach $data as $k=>$v
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}
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public function changes( $new_values ) {
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$changes = array();
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foreach ( $new_values as $field => $value ) {
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if ( method_exists($this, $field) ) {
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$old_value = $this->$field();
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Logger::Debug("Checking method $field () ".print_r($old_value,true).' => ' . print_r($value,true));
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if ( is_array($old_value) ) {
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$diff = array_recursive_diff($old_value, $value);
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Logger::Debug("Checking method $field () diff is".print_r($diff,true));
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if ( count($diff) ) {
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$changes[$field] = $value;
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}
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} else if ( $this->$field() != $value ) {
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$changes[$field] = $value;
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}
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} else if ( array_key_exists($field, $this) ) {
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Logger::Debug("Checking field $field => ".$this->{$field} . ' ?= ' .$value);
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if ( $this->{$field} != $value ) {
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$changes[$field] = $value;
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}
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} else if ( array_key_exists($field, $this->defaults) ) {
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Logger::Debug("Checking default $field => ".$this->defaults[$field] . ' ' .$value);
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if ( $this->defaults[$field] != $value ) {
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$changes[$field] = $value;
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}
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}
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#if ( (!array_key_exists($field, $this)) or ( $this->{$field} != $new_values[$field] ) ) {
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#Logger::Debug("Checking default $field => $default_value changes becaause" . $new_values[$field].' != '.$new_values[$field]);
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#$changes[$field] = $new_values[$field];
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##} else if {
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#Logger::Debug("Checking default $field => $default_value changes becaause " . $new_values[$field].' != '.$new_values[$field]);
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##array_push( $changes, [$field=>$defaults[$field]] );
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#}
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#} else {
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#Logger::Debug("Checking default $field => $default_value not in new_values");
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#}
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} # end foreach default
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return $changes;
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} # end public function changes
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public function save($new_values = null) {
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$class = get_class($this);
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$table = $class::$table;
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if ( $new_values ) {
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Logger::Debug("New values" . print_r($new_values,true));
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$this->set($new_values);
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}
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if ( $this->Id() ) {
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$fields = array_keys($this->defaults);
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$sql = 'UPDATE '.$table.' SET '.implode(', ', array_map(function($field) {return '`'.$field.'`=?';}, $fields )) . ' WHERE Id=?';
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$values = array_map(function($field){return $this->{$field};}, $fields);
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$values[] = $this->{'Id'};
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if ( dbQuery($sql, $values) )
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return true;
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} else {
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$fields = $this->defaults;
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unset($fields['Id']);
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$sql = 'INSERT INTO '.$table.' ('.implode(', ', array_map(function($field) {return '`'.$field.'`';}, array_keys($fields))).') VALUES ('.implode(', ', array_map(function($field){return '?';}, array_values($fields))).')';
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$values = array_map(function($field){return $this->{$field};}, array_keys($fields));
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if ( dbQuery($sql, $values) ) {
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$this->{'Id'} = dbInsertId();
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return true;
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}
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}
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return false;
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} // end function save
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public function delete() {
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$class = get_class($this);
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$table = $class::$table;
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dbQuery("DELETE FROM $table WHERE Id=?", array($this->{'Id'}));
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if ( isset($object_cache[$class]) and isset($object_cache[$class][$this->{'Id'}]) )
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unset($object_cache[$class][$this->{'Id'}]);
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}
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public function lock() {
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$class = get_class($this);
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$table = $class::$table;
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$row = dbFetchOne("SELECT * FROM `$table` WHERE `Id`=?", NULL, array($this->Id()));
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if ( !$row ) {
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Error("Unable to lock $class record for Id=".$this->Id());
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}
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}
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} # end class Object
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?>
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