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 {
}