DatabaseUtility.php

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<?php
class DBObject {
        public $mData;

        function __construct( $data ) {
                $this->mData = $data;
        }

        function isLOB() {
                return false;
        }

        function data() {
                return $this->mData;
        }
}

class Blob {
        private $mData;

        function __construct( $data ) {
                $this->mData = $data;
        }

        function fetch() {
                return $this->mData;
        }
}

interface Field {
        function name();

        function tableName();

        function type();

        function isNullable();
}

class ResultWrapper implements Iterator {
        var $db, $result, $pos = 0, $currentRow = null;

        function __construct( $database, $result ) {
                $this->db = $database;

                if ( $result instanceof ResultWrapper ) {
                        $this->result = $result->result;
                } else {
                        $this->result = $result;
                }
        }

        function numRows() {
                return $this->db->numRows( $this );
        }

        function fetchObject() {
                return $this->db->fetchObject( $this );
        }

        function fetchRow() {
                return $this->db->fetchRow( $this );
        }

        function free() {
                $this->db->freeResult( $this );
                unset( $this->result );
                unset( $this->db );
        }

        function seek( $row ) {
                $this->db->dataSeek( $this, $row );
        }

        /*********************
         * Iterator functions
         * Note that using these in combination with the non-iterator functions
         * above may cause rows to be skipped or repeated.
         */

        function rewind() {
                if ( $this->numRows() ) {
                        $this->db->dataSeek( $this, 0 );
                }
                $this->pos = 0;
                $this->currentRow = null;
        }

        function current() {
                if ( is_null( $this->currentRow ) ) {
                        $this->next();
                }
                return $this->currentRow;
        }

        function key() {
                return $this->pos;
        }

        function next() {
                $this->pos++;
                $this->currentRow = $this->fetchObject();
                return $this->currentRow;
        }

        function valid() {
                return $this->current() !== false;
        }
}

class FakeResultWrapper extends ResultWrapper {
        var $result = array();
        var $db = null; // And it's going to stay that way :D
        var $pos = 0;
        var $currentRow = null;

        function __construct( $array ) {
                $this->result = $array;
        }

        function numRows() {
                return count( $this->result );
        }

        function fetchRow() {
                if ( $this->pos < count( $this->result ) ) {
                        $this->currentRow = $this->result[$this->pos];
                } else {
                        $this->currentRow = false;
                }
                $this->pos++;
                if ( is_object( $this->currentRow ) ) {
                        return get_object_vars( $this->currentRow );
                } else {
                        return $this->currentRow;
                }
        }

        function seek( $row ) {
                $this->pos = $row;
        }

        function free() {}

        // Callers want to be able to access fields with $this->fieldName
        function fetchObject() {
                $this->fetchRow();
                if ( $this->currentRow ) {
                        return (object)$this->currentRow;
                } else {
                        return false;
                }
        }

        function rewind() {
                $this->pos = 0;
                $this->currentRow = null;
        }

        function next() {
                return $this->fetchObject();
        }
}

class LikeMatch {
        private $str;

        public function __construct( $s ) {
                $this->str = $s;
        }

        public function toString() {
                return $this->str;
        }
}

interface DBMasterPos {
}