HuasoFoundries / phpPgAdmin6

src/controllers/MaterializedviewsController.php

<?php

You must use "/**" style comments for a file comment

/*
 * PHPPgAdmin v6.0.0-beta.30
 */

namespace PHPPgAdmin\Controller;

use PHPPgAdmin\Decorators\Decorator;

/**
 * Base controller class.
 */
class MaterializedviewsController extends BaseController
{
    public $script          = 'materializedviews.php';
    public $controller_name = 'MaterializedviewsController';
    public $table_place     = 'matviews-matviews';

    /**
     * Default method to render the controller according to the action parameter.
     */
    public function render()
    {
        $lang   = $this->lang;
        $action = $this->action;

        if ('tree' == $action) {
            return $this->doTree();
        }
        if ('subtree' == $action) {
            return $this->doSubTree();
        }

        $data = $this->misc->getDatabaseAccessor();

        $this->printHeader('M ' . $lang['strviews']);
        $this->printBody();

        switch ($action) {
            case 'selectrows':
                if (!isset($_REQUEST['cancel'])) {
                    $this->doSelectRows(false);
                } else {
                    $this->doDefault();
                }

                break;
            case 'confselectrows':
                $this->doSelectRows(true);

                break;
            case 'save_create_wiz':
                if (isset($_REQUEST['cancel'])) {
                    $this->doDefault();
                } else {
                    $this->doSaveCreateWiz();
                }

                break;
            case 'wiz_create':
                $this->doWizardCreate();

                break;
            case 'set_params_create':
                if (isset($_POST['cancel'])) {
                    $this->doDefault();
                } else {
                    $this->doSetParamsCreate();
                }

                break;
            case 'save_create':
                if (isset($_REQUEST['cancel'])) {
                    $this->doDefault();
                } else {
                    $this->doSaveCreate();
                }

                break;
            case 'create':
                $this->doCreate();

                break;
            case 'drop':
                if (isset($_POST['drop'])) {
                    $this->doDrop(false);
                } else {
                    $this->doDefault();
                }

                break;
            case 'confirm_drop':
                $this->doDrop(true);

                break;
            default:
                $this->doDefault();

                break;
        }

        $this->printFooter();
    }

    /**
     * Show default list of views in the database.
     *
     * @param mixed $msg

Missing parameter comment

     */
    public function doDefault($msg = '')
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        $this->printTrail('schema');
        $this->printTabs('schema', 'matviews');
        $this->printMsg($msg);

        //$matviews = $data->getViews();
        $matviews = $data->getMaterializedViews();

        $columns = [
            'matview' => [
                'title' => 'M ' . $lang['strview'],
                'field' => Decorator::field('relname'),
                'url'   => \SUBFOLDER . "/redirect/matview?{$this->misc->href}&",
                'vars'  => ['matview' => 'relname'],
            ],
            'owner'   => [
                'title' => $lang['strowner'],
                'field' => Decorator::field('relowner'),
            ],
            'actions' => [
                'title' => $lang['stractions'],
            ],
            'comment' => [
                'title' => $lang['strcomment'],
                'field' => Decorator::field('relcomment'),
            ],
        ];

        $actions = [
            'multiactions' => [
                'keycols' => ['matview' => 'relname'],
                'url'     => 'materializedviews.php',
            ],
            'browse'       => [
                'content' => $lang['strbrowse'],
                'attr'    => [
                    'href' => [
                        'url'     => 'display.php',
                        'urlvars' => [
                            'action'  => 'confselectrows',
                            'subject' => 'matview',
                            'return'  => 'schema',
                            'matview' => Decorator::field('relname'),
                        ],
                    ],
                ],
            ],
            'select'       => [
                'content' => $lang['strselect'],
                'attr'    => [
                    'href' => [
                        'url'     => 'materializedviews.php',
                        'urlvars' => [
                            'action'  => 'confselectrows',
                            'matview' => Decorator::field('relname'),
                        ],
                    ],
                ],
            ],

            // Insert is possible if the relevant rule for the view has been created.
            //            'insert' => array(
            //                'title'    => $lang['strinsert'],
            //                'url'    => "materializedviews.php?action=confinsertrow&{$this->misc->href}&",
            //                'vars'    => array('view' => 'relname'),
            //            ),

            'alter'        => [
                'content' => $lang['stralter'],
                'attr'    => [
                    'href' => [
                        'url'     => 'materializedviewproperties.php',
                        'urlvars' => [
                            'action'  => 'confirm_alter',
                            'matview' => Decorator::field('relname'),
                        ],
                    ],
                ],
            ],
            'drop'         => [
                'multiaction' => 'confirm_drop',
                'content'     => $lang['strdrop'],
                'attr'        => [
                    'href' => [
                        'url'     => 'materializedviews.php',
                        'urlvars' => [
                            'action'  => 'confirm_drop',
                            'matview' => Decorator::field('relname'),
                        ],
                    ],
                ],
            ],
        ];

        echo $this->printTable($matviews, $columns, $actions, $this->table_place, $lang['strnoviews']);

        $navlinks = [
            'create'    => [
                'attr'    => [
                    'href' => [
                        'url'     => 'materializedviews.php',
                        'urlvars' => [
                            'action'   => 'create',
                            'server'   => $_REQUEST['server'],
                            'database' => $_REQUEST['database'],
                            'schema'   => $_REQUEST['schema'],
                        ],
                    ],
                ],
                'content' => $lang['strcreateview'],
            ],
            'createwiz' => [
                'attr'    => [
                    'href' => [
                        'url'     => 'materializedviews.php',
                        'urlvars' => [
                            'action'   => 'wiz_create',
                            'server'   => $_REQUEST['server'],
                            'database' => $_REQUEST['database'],
                            'schema'   => $_REQUEST['schema'],
                        ],
                    ],
                ],
                'content' => $lang['strcreateviewwiz'],
            ],
        ];
        $this->printNavLinks($navlinks, $this->table_place, get_defined_vars());
    }

    /**
     * Generate XML for the browser tree.
     */
    public function doTree()
    {
        $lang = $this->lang;

The assignment to $lang is dead and can be removed.

        $data = $this->misc->getDatabaseAccessor();

        $matviews = $data->getMaterializedViews();

        $reqvars = $this->misc->getRequestVars('matview');

        $attrs = [
            'text'       => Decorator::field('relname'),
            'icon'       => 'MView',
            'iconAction' => Decorator::url('display.php', $reqvars, ['matview' => Decorator::field('relname')]),
            'toolTip'    => Decorator::field('relcomment'),
            'action'     => Decorator::redirecturl('redirect.php', $reqvars, ['matview' => Decorator::field('relname')]),
            'branch'     => Decorator::url('materializedviews.php', $reqvars, ['action' => 'subtree', 'matview' => Decorator::field('relname')]),
        ];

        return $this->printTree($matviews, $attrs, 'matviews');
    }

    public function doSubTree()
    {
        $lang = $this->lang;

The assignment to $lang is dead and can be removed.

        $data = $this->misc->getDatabaseAccessor();

        $tabs    = $this->misc->getNavTabs('matview');
        $items   = $this->adjustTabsForTree($tabs);
        $reqvars = $this->misc->getRequestVars('matview');

        $attrs = [
            'text'   => Decorator::field('title'),
            'icon'   => Decorator::field('icon'),
            'action' => Decorator::actionurl(Decorator::field('url'), $reqvars, Decorator::field('urlvars'), ['matview' => $_REQUEST['matview']]),
            'branch' => Decorator::ifempty(
                Decorator::field('branch'),
                '',
                Decorator::url(
                    Decorator::field('url'),
                    Decorator::field('urlvars'),
                    $reqvars,
                    [
                        'action'  => 'tree',
                        'matview' => $_REQUEST['matview'],
                    ]
                )
            ),
        ];

        return $this->printTree($items, $attrs, 'matviews');
    }

    /**
     * Ask for select parameters and perform select.
     *
     * @param mixed $confirm

Missing parameter comment

     * @param mixed $msg

Missing parameter comment

     */
    public function doSelectRows($confirm, $msg = '')
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        if ($confirm) {
            $this->printTrail('view');
            $this->printTabs('matview', 'select');
            $this->printMsg($msg);

            $attrs = $data->getTableAttributes($_REQUEST['matview']);

            echo '<form action="' . \SUBFOLDER . '/src/views/' . $this->script . '" method="post" id="selectform">';
            echo "\n";

            if ($attrs->recordCount() > 0) {
                // JavaScript for select all feature
                echo "<script type=\"text/javascript\">\n";
                echo "//<![CDATA[\n";
                echo "	function selectAll() {\n";
                echo "		for (var i=0; i<document.getElementById('selectform').elements.length; i++) {\n";
                echo "			var e = document.getElementById('selectform').elements[i];\n";
                echo "			if (e.name.indexOf('show') == 0) { \n ";
                echo "				e.checked = document.getElementById('selectform').selectall.checked;\n";
                echo "			}\n";
                echo "		}\n";
                echo "	}\n";
                echo "//]]>\n";
                echo "</script>\n";

                echo "<table>\n";

                // Output table header
                echo "<tr><th class=\"data\">{$lang['strshow']}</th><th class=\"data\">{$lang['strcolumn']}</th>";
                echo "<th class=\"data\">{$lang['strtype']}</th><th class=\"data\">{$lang['stroperator']}</th>";
                echo "<th class=\"data\">{$lang['strvalue']}</th></tr>";

                $i = 0;
                while (!$attrs->EOF) {
                    $attrs->fields['attnotnull'] = $data->phpBool($attrs->fields['attnotnull']);
                    // Set up default value if there isn't one already
                    if (!isset($_REQUEST['values'][$attrs->fields['attname']])) {
                        $_REQUEST['values'][$attrs->fields['attname']] = null;
                    }

                    if (!isset($_REQUEST['ops'][$attrs->fields['attname']])) {
                        $_REQUEST['ops'][$attrs->fields['attname']] = null;
                    }

                    // Continue drawing row
                    $id = (0 == ($i % 2) ? '1' : '2');
                    echo "<tr class=\"data{$id}\">\n";
                    echo '<td style="white-space:nowrap;">';
                    echo '<input type="checkbox" name="show[', htmlspecialchars($attrs->fields['attname']), ']"',
                    isset($_REQUEST['show'][$attrs->fields['attname']]) ? ' checked="checked"' : '', ' /></td>';
                    echo '<td style="white-space:nowrap;">', $this->misc->printVal($attrs->fields['attname']), '</td>';
                    echo '<td style="white-space:nowrap;">', $this->misc->printVal($data->formatType($attrs->fields['type'], $attrs->fields['atttypmod'])), '</td>';
                    echo '<td style="white-space:nowrap;">';
                    echo "<select name=\"ops[{$attrs->fields['attname']}]\">\n";
                    foreach (array_keys($data->selectOps) as $v) {
                        echo '<option value="', htmlspecialchars($v), '"', ($_REQUEST['ops'][$attrs->fields['attname']] == $v) ? ' selected="selected"' : '',
                        '>', htmlspecialchars($v), "</option>\n";
                    }
                    echo "</select></td>\n";
                    echo '<td style="white-space:nowrap;">', $data->printField(
                        "values[{$attrs->fields['attname']}]",
                        $_REQUEST['values'][$attrs->fields['attname']],
                        $attrs->fields['type']
                    ), '</td>';
                    echo "</tr>\n";
                    ++$i;
                    $attrs->moveNext();
                }
                // Select all checkbox
                echo "<tr><td colspan=\"5\"><input type=\"checkbox\" id=\"selectall\" name=\"selectall\" accesskey=\"a\" onclick=\"javascript:selectAll()\" /><label for=\"selectall\">{$lang['strselectallfields']}</label></td></tr>";
                echo "</table>\n";
            } else {
                echo "<p>{$lang['strinvalidparam']}</p>\n";
            }

            echo "<p><input type=\"hidden\" name=\"action\" value=\"selectrows\" />\n";
            echo '<input type="hidden" name="view" value="', htmlspecialchars($_REQUEST['matview']), "\" />\n";
            echo "<input type=\"hidden\" name=\"subject\" value=\"view\" />\n";
            echo $this->misc->form;
            echo "<input type=\"submit\" name=\"select\" accesskey=\"r\" value=\"{$lang['strselect']}\" />\n";
            echo "<input type=\"submit\" name=\"cancel\" value=\"{$lang['strcancel']}\" /></p>\n";
            echo "</form>\n";

            return;
        }
        if (!isset($_POST['show'])) {
            $_POST['show'] = [];
        }

        if (!isset($_POST['values'])) {
            $_POST['values'] = [];
        }

        if (!isset($_POST['nulls'])) {
            $_POST['nulls'] = [];
        }

        // Verify that they haven't supplied a value for unary operators
        foreach ($_POST['ops'] as $k => $v) {
            if ('p' == $data->selectOps[$v] && $_POST['values'][$k] != '') {
                $this->doSelectRows(true, $lang['strselectunary']);

                return;
            }
        }

        if (0 == sizeof($_POST['show'])) {
            return $this->doSelectRows(true, $lang['strselectneedscol']);
        }
        // Generate query SQL
        $query = $data->getSelectSQL($_REQUEST['matview'], array_keys($_POST['show']), $_POST['values'], $_POST['ops']);

        $_REQUEST['query']  = $query;
        $_REQUEST['return'] = 'schema';

        $this->setNoOutput(true);

        $display_controller = new DisplayController($this->getContainer());

        return $display_controller->render();
    }

    /**
     * Show confirmation of drop and perform actual drop.
     *
     * @param mixed $confirm

Missing parameter comment

     */
    public function doDrop($confirm)
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        if (empty($_REQUEST['matview']) && empty($_REQUEST['ma'])) {
            return $this->doDefault($lang['strspecifyviewtodrop']);
        }

        if ($confirm) {
            $this->printTrail('getTrail');
            $this->printTitle($lang['strdrop'], 'pg.matview.drop');

            echo '<form action="' . \SUBFOLDER . "/src/views/materializedviews.php\" method=\"post\">\n";

            //If multi drop
            if (isset($_REQUEST['ma'])) {
                foreach ($_REQUEST['ma'] as $v) {
                    $a = unserialize(htmlspecialchars_decode($v, ENT_QUOTES));
                    echo '<p>', sprintf($lang['strconfdropview'], $this->misc->printVal($a['view'])), "</p>\n";
                    echo '<input type="hidden" name="view[]" value="', htmlspecialchars($a['view']), "\" />\n";
                }
            } else {
                echo '<p>', sprintf($lang['strconfdropview'], $this->misc->printVal($_REQUEST['matview'])), "</p>\n";
                echo '<input type="hidden" name="view" value="', htmlspecialchars($_REQUEST['matview']), "\" />\n";
            }

            echo "<input type=\"hidden\" name=\"action\" value=\"drop\" />\n";

            echo $this->misc->form;
            echo "<p><input type=\"checkbox\" id=\"cascade\" name=\"cascade\" /> <label for=\"cascade\">{$lang['strcascade']}</label></p>\n";
            echo "<input type=\"submit\" name=\"drop\" value=\"{$lang['strdrop']}\" />\n";
            echo "<input type=\"submit\" name=\"cancel\" value=\"{$lang['strcancel']}\" />\n";
            echo "</form>\n";
        } else {
            if (is_array($_POST['view'])) {
                $msg    = '';
                $status = $data->beginTransaction();
                if (0 == $status) {
                    foreach ($_POST['view'] as $s) {
                        $status = $data->dropView($s, isset($_POST['cascade']));
                        if (0 == $status) {
                            $msg .= sprintf('%s: %s<br />', htmlentities($s, ENT_QUOTES, 'UTF-8'), $lang['strviewdropped']);
                        } else {
                            $data->endTransaction();
                            $this->doDefault(sprintf('%s%s: %s<br />', $msg, htmlentities($s, ENT_QUOTES, 'UTF-8'), $lang['strviewdroppedbad']));

                            return;
                        }
                    }
                }
                if (0 == $data->endTransaction()) {
                    // Everything went fine, back to the Default page....
                    $this->misc->setReloadBrowser(true);
                    $this->doDefault($msg);
                } else {
                    $this->doDefault($lang['strviewdroppedbad']);
                }
            } else {
                $status = $data->dropView($_POST['view'], isset($_POST['cascade']));
                if (0 == $status) {
                    $this->misc->setReloadBrowser(true);
                    $this->doDefault($lang['strviewdropped']);
                } else {
                    $this->doDefault($lang['strviewdroppedbad']);
                }
            }
        }
    }

    /**
     * Sets up choices for table linkage, and which fields to select for the view we're creating.
     *
     * @param mixed $msg

Missing parameter comment

     */
    public function doSetParamsCreate($msg = '')
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        // Check that they've chosen tables for the view definition
        if (!isset($_POST['formTables'])) {
            $this->doWizardCreate($lang['strviewneedsdef']);
        } else {
            // Initialise variables
            if (!isset($_REQUEST['formView'])) {
                $_REQUEST['formView'] = '';
            }

            if (!isset($_REQUEST['formComment'])) {
                $_REQUEST['formComment'] = '';
            }

            $this->printTrail('schema');
            $this->printTitle($lang['strcreateviewwiz'], 'pg.matview.create');
            $this->printMsg($msg);

            $tblCount = sizeof($_POST['formTables']);
            //unserialize our schema/table information and store in arrSelTables
            for ($i = 0; $i < $tblCount; ++$i) {
                $arrSelTables[] = unserialize($_POST['formTables'][$i]);
            }

            $linkCount = $tblCount;

            //get linking keys
            $rsLinkKeys = $data->getLinkingKeys($arrSelTables);
            $linkCount  = $rsLinkKeys->recordCount() > $tblCount ? $rsLinkKeys->recordCount() : $tblCount;

            $arrFields = []; //array that will hold all our table/field names

            //if we have schemas we need to specify the correct schema for each table we're retrieiving
            //with getTableAttributes
            $curSchema = $data->_schema;
            for ($i = 0; $i < $tblCount; ++$i) {
                if ($arrSelTables[$i]['schemaname'] != $data->_schema) {
                    $data->setSchema($arrSelTables[$i]['schemaname']);
                }

                $attrs = $data->getTableAttributes($arrSelTables[$i]['tablename']);
                while (!$attrs->EOF) {
                    $arrFields["{$arrSelTables[$i]['schemaname']}.{$arrSelTables[$i]['tablename']}.{$attrs->fields['attname']}"] = serialize(
                        [
                            'schemaname' => $arrSelTables[$i]['schemaname'],
                            'tablename'  => $arrSelTables[$i]['tablename'],
                            'fieldname'  => $attrs->fields['attname']]
                    );
                    $attrs->moveNext();
                }

                $data->setSchema($curSchema);
            }
            asort($arrFields);

            echo '<form action="' . \SUBFOLDER . "/src/views/materializedviews.php\" method=\"post\">\n";
            echo "<table>\n";
            echo "<tr><th class=\"data\">{$lang['strviewname']}</th></tr>";
            echo "<tr>\n<td class=\"data1\">\n";
            // View name
            echo '<input name="formView" value="', htmlspecialchars($_REQUEST['formView']), "\" size=\"32\" maxlength=\"{$data->_maxNameLen}\" />\n";
            echo "</td>\n</tr>\n";
            echo "<tr><th class=\"data\">{$lang['strcomment']}</th></tr>";
            echo "<tr>\n<td class=\"data1\">\n";
            // View comments
            echo '<textarea name="formComment" rows="3" cols="32">',
            htmlspecialchars($_REQUEST['formComment']), "</textarea>\n";
            echo "</td>\n</tr>\n";
            echo "</table>\n";

            // Output selector for fields to be retrieved from view
            echo "<table>\n";
            echo "<tr><th class=\"data\">{$lang['strcolumns']}</th></tr>";
            echo "<tr>\n<td class=\"data1\">\n";
            echo \PHPPgAdmin\XHtml\HTMLController::printCombo($arrFields, 'formFields[]', false, '', true);
            echo "</td>\n</tr>";
            echo "<tr><td><input type=\"radio\" name=\"dblFldMeth\" id=\"dblFldMeth1\" value=\"rename\" /><label for=\"dblFldMeth1\">{$lang['strrenamedupfields']}</label>";
            echo "<br /><input type=\"radio\" name=\"dblFldMeth\" id=\"dblFldMeth2\" value=\"drop\" /><label for=\"dblFldMeth2\">{$lang['strdropdupfields']}</label>";
            echo "<br /><input type=\"radio\" name=\"dblFldMeth\" id=\"dblFldMeth3\" value=\"\" checked=\"checked\" /><label for=\"dblFldMeth3\">{$lang['strerrordupfields']}</label></td></tr></table><br />";

            // Output the Linking keys combo boxes
            echo "<table>\n";
            echo "<tr><th class=\"data\">{$lang['strviewlink']}</th></tr>";
            $rowClass = 'data1';
            for ($i = 0; $i < $linkCount; ++$i) {
                // Initialise variables
                if (!isset($formLink[$i]['operator'])) {
                    $formLink[$i]['operator'] = 'INNER JOIN';
                }

                echo "<tr>\n<td class=\"${rowClass}\">\n";

                if (!$rsLinkKeys->EOF) {
                    $curLeftLink  = htmlspecialchars(serialize(['schemaname' => $rsLinkKeys->fields['p_schema'], 'tablename' => $rsLinkKeys->fields['p_table'], 'fieldname' => $rsLinkKeys->fields['p_field']]));
                    $curRightLink = htmlspecialchars(serialize(['schemaname' => $rsLinkKeys->fields['f_schema'], 'tablename' => $rsLinkKeys->fields['f_table'], 'fieldname' => $rsLinkKeys->fields['f_field']]));
                    $rsLinkKeys->moveNext();
                } else {
                    $curLeftLink  = '';
                    $curRightLink = '';
                }

                echo \PHPPgAdmin\XHtml\HTMLController::printCombo($arrFields, "formLink[${i}][leftlink]", true, $curLeftLink, false);
                echo \PHPPgAdmin\XHtml\HTMLController::printCombo($data->joinOps, "formLink[${i}][operator]", true, $formLink[$i]['operator']);
                echo \PHPPgAdmin\XHtml\HTMLController::printCombo($arrFields, "formLink[${i}][rightlink]", true, $curRightLink, false);
                echo "</td>\n</tr>\n";
                $rowClass = 'data1' == $rowClass ? 'data2' : 'data1';
            }
            echo "</table>\n<br />\n";

            // Build list of available operators (infix only)
            $arrOperators = [];
            foreach ($data->selectOps as $k => $v) {
                if ('i' == $v) {
                    $arrOperators[$k] = $k;
                }
            }

            // Output additional conditions, note that this portion of the wizard treats the right hand side as literal values
            //(not as database objects) so field names will be treated as strings, use the above linking keys section to perform joins
            echo "<table>\n";
            echo "<tr><th class=\"data\">{$lang['strviewconditions']}</th></tr>";
            $rowClass = 'data1';
            for ($i = 0; $i < $linkCount; ++$i) {
                echo "<tr>\n<td class=\"${rowClass}\">\n";
                echo \PHPPgAdmin\XHtml\HTMLController::printCombo($arrFields, "formCondition[${i}][field]");
                echo \PHPPgAdmin\XHtml\HTMLController::printCombo($arrOperators, "formCondition[${i}][operator]", false, false);
                echo "<input type=\"text\" name=\"formCondition[${i}][txt]\" />\n";
                echo "</td>\n</tr>\n";
                $rowClass = 'data1' == $rowClass ? 'data2' : 'data1';
            }
            echo "</table>\n";
            echo "<p><input type=\"hidden\" name=\"action\" value=\"save_create_wiz\" />\n";

            foreach ($arrSelTables as $curTable) {
                echo '<input type="hidden" name="formTables[]" value="' . htmlspecialchars(serialize($curTable)) . "\" />\n";
            }

            echo $this->misc->form;
            echo "<input type=\"submit\" value=\"{$lang['strcreate']}\" />\n";
            echo "<input type=\"submit\" name=\"cancel\" value=\"{$lang['strcancel']}\" /></p>\n";
            echo "</form>\n";
        }
    }

    /**
     * Display a wizard where they can enter a new view.
     *
     * @param mixed $msg

Missing parameter comment

     */
    public function doWizardCreate($msg = '')
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        $tables = $data->getTables(true);

        $this->printTrail('schema');
        $this->printTitle($lang['strcreateviewwiz'], 'pg.matview.create');
        $this->printMsg($msg);

        echo '<form action="' . \SUBFOLDER . "/src/views/materializedviews.php\" method=\"post\">\n";
        echo "<table>\n";
        echo "<tr><th class=\"data\">{$lang['strtables']}</th></tr>";
        echo "<tr>\n<td class=\"data1\">\n";

        $arrTables = [];
        while (!$tables->EOF) {
            $arrTmp                                                                   = [];
            $arrTmp['schemaname']                                                     = $tables->fields['nspname'];
            $arrTmp['tablename']                                                      = $tables->fields['relname'];
            $arrTables[$tables->fields['nspname'] . '.' . $tables->fields['relname']] = serialize($arrTmp);
            $tables->moveNext();
        }
        echo \PHPPgAdmin\XHtml\HTMLController::printCombo($arrTables, 'formTables[]', false, '', true);

        echo "</td>\n</tr>\n";
        echo "</table>\n";
        echo "<p><input type=\"hidden\" name=\"action\" value=\"set_params_create\" />\n";
        echo $this->misc->form;
        echo "<input type=\"submit\" value=\"{$lang['strnext']}\" />\n";
        echo "<input type=\"submit\" name=\"cancel\" value=\"{$lang['strcancel']}\" /></p>\n";
        echo "</form>\n";
    }

    /**
     * Displays a screen where they can enter a new view.
     *
     * @param mixed $msg

Missing parameter comment

     */
    public function doCreate($msg = '')
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        if (!isset($_REQUEST['formView'])) {
            $_REQUEST['formView'] = '';
        }

        if (!isset($_REQUEST['formDefinition'])) {
            if (isset($_SESSION['sqlquery'])) {
                $_REQUEST['formDefinition'] = $_SESSION['sqlquery'];
            } else {
                $_REQUEST['formDefinition'] = 'SELECT ';
            }
        }
        if (!isset($_REQUEST['formComment'])) {
            $_REQUEST['formComment'] = '';
        }

        $this->printTrail('schema');
        $this->printTitle($lang['strcreateview'], 'pg.matview.create');
        $this->printMsg($msg);

        echo '<form action="' . \SUBFOLDER . "/src/views/materializedviews.php\" method=\"post\">\n";
        echo "<table style=\"width: 100%\">\n";
        echo "\t<tr>\n\t\t<th class=\"data left required\">{$lang['strname']}</th>\n";
        echo "\t<td class=\"data1\"><input name=\"formView\" size=\"32\" maxlength=\"{$data->_maxNameLen}\" value=\"",
        htmlspecialchars($_REQUEST['formView']), "\" /></td>\n\t</tr>\n";
        echo "\t<tr>\n\t\t<th class=\"data left required\">{$lang['strdefinition']}</th>\n";
        echo "\t<td class=\"data1\"><textarea style=\"width:100%;\" rows=\"10\" cols=\"50\" name=\"formDefinition\">",
        htmlspecialchars($_REQUEST['formDefinition']), "</textarea></td>\n\t</tr>\n";
        echo "\t<tr>\n\t\t<th class=\"data left\">{$lang['strcomment']}</th>\n";
        echo "\t\t<td class=\"data1\"><textarea name=\"formComment\" rows=\"3\" cols=\"32\">",
        htmlspecialchars($_REQUEST['formComment']), "</textarea></td>\n\t</tr>\n";
        echo "</table>\n";
        echo "<p><input type=\"hidden\" name=\"action\" value=\"save_create\" />\n";
        echo $this->misc->form;
        echo "<input type=\"submit\" value=\"{$lang['strcreate']}\" />\n";
        echo "<input type=\"submit\" name=\"cancel\" value=\"{$lang['strcancel']}\" /></p>\n";
        echo "</form>\n";
    }

    /**
     * Actually creates the new view in the database.
     */
    public function doSaveCreate()
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        // Check that they've given a name and a definition
        if ('' == $_POST['formView']) {
            $this->doCreate($lang['strviewneedsname']);
        } elseif ('' == $_POST['formDefinition']) {
            $this->doCreate($lang['strviewneedsdef']);
        } else {
            $status = $data->createView($_POST['formView'], $_POST['formDefinition'], false, $_POST['formComment']);
            if (0 == $status) {
                $this->misc->setReloadBrowser(true);
                $this->doDefault($lang['strviewcreated']);
            } else {
                $this->doCreate($lang['strviewcreatedbad']);
            }
        }
    }

    /**
     * Actually creates the new wizard view in the database.
     */
    public function doSaveCreateWiz()
    {
        $lang = $this->lang;
        $data = $this->misc->getDatabaseAccessor();

        // Check that they've given a name and fields they want to select

        if (!strlen($_POST['formView'])) {
            $this->doSetParamsCreate($lang['strviewneedsname']);
        } elseif (!isset($_POST['formFields']) || !count($_POST['formFields'])) {
            $this->doSetParamsCreate($lang['strviewneedsfields']);
        } else {
            $selFields = '';

            if (!empty($_POST['dblFldMeth'])) {
                $tmpHsh = [];
            }

            foreach ($_POST['formFields'] as $curField) {
                $arrTmp = unserialize($curField);
                $data->fieldArrayClean($arrTmp);
                if (!empty($_POST['dblFldMeth'])) {
                    // doublon control
                    if (empty($tmpHsh[$arrTmp['fieldname']])) {
                        // field does not exist
                        $selFields .= "\"{$arrTmp['schemaname']}\".\"{$arrTmp['tablename']}\".\"{$arrTmp['fieldname']}\", ";
                        $tmpHsh[$arrTmp['fieldname']] = 1;
                    } elseif ('rename' == $_POST['dblFldMeth']) {
                        // field exist and must be renamed
                        ++$tmpHsh[$arrTmp['fieldname']];
                        $selFields .= "\"{$arrTmp['schemaname']}\".\"{$arrTmp['tablename']}\".\"{$arrTmp['fieldname']}\" AS \"{$arrTmp['schemaname']}_{$arrTmp['tablename']}_{$arrTmp['fieldname']}{$tmpHsh[$arrTmp['fieldname']]}\", ";
                    }
                    // field already exist, just ignore this one
                } else {
                    // no doublon control
                    $selFields .= "\"{$arrTmp['schemaname']}\".\"{$arrTmp['tablename']}\".\"{$arrTmp['fieldname']}\", ";
                }
            }

            $selFields = substr($selFields, 0, -2);
            unset($arrTmp, $tmpHsh);
            $linkFields = '';

            // If we have links, out put the JOIN ... ON statements
            if (is_array($_POST['formLink'])) {
                // Filter out invalid/blank entries for our links
                $arrLinks = [];
                foreach ($_POST['formLink'] as $curLink) {
                    if (strlen($curLink['leftlink']) && strlen($curLink['rightlink']) && strlen($curLink['operator'])) {
                        $arrLinks[] = $curLink;
                    }
                }
                // We must perform some magic to make sure that we have a valid join order
                $count       = sizeof($arrLinks);
                $arrJoined   = [];
                $arrUsedTbls = [];

                // If we have at least one join condition, output it
                if ($count > 0) {
                    $j = 0;
                    while ($j < $count) {
                        foreach ($arrLinks as $curLink) {
                            $arrLeftLink  = unserialize($curLink['leftlink']);
                            $arrRightLink = unserialize($curLink['rightlink']);
                            $data->fieldArrayClean($arrLeftLink);
                            $data->fieldArrayClean($arrRightLink);

                            $tbl1 = "\"{$arrLeftLink['schemaname']}\".\"{$arrLeftLink['tablename']}\"";
                            $tbl2 = "\"{$arrRightLink['schemaname']}\".\"{$arrRightLink['tablename']}\"";

                            if ((!in_array($curLink, $arrJoined, true) && in_array($tbl1, $arrUsedTbls, true)) || !count($arrJoined)) {
                                // Make sure for multi-column foreign keys that we use a table alias tables joined to more than once
                                // This can (and should be) more optimized for multi-column foreign keys
                                $adj_tbl2 = in_array($tbl2, $arrUsedTbls, true) ? "${tbl2} AS alias_ppa_" . mktime() : $tbl2;

                                $linkFields .= strlen($linkFields) ? "{$curLink['operator']} ${adj_tbl2} ON (\"{$arrLeftLink['schemaname']}\".\"{$arrLeftLink['tablename']}\".\"{$arrLeftLink['fieldname']}\" = \"{$arrRightLink['schemaname']}\".\"{$arrRightLink['tablename']}\".\"{$arrRightLink['fieldname']}\") "
                                : "${tbl1} {$curLink['operator']} ${adj_tbl2} ON (\"{$arrLeftLink['schemaname']}\".\"{$arrLeftLink['tablename']}\".\"{$arrLeftLink['fieldname']}\" = \"{$arrRightLink['schemaname']}\".\"{$arrRightLink['tablename']}\".\"{$arrRightLink['fieldname']}\") ";

                                $arrJoined[] = $curLink;
                                if (!in_array($tbl1, $arrUsedTbls, true)) {
                                    $arrUsedTbls[] = $tbl1;
                                }

                                if (!in_array($tbl2, $arrUsedTbls, true)) {
                                    $arrUsedTbls[] = $tbl2;
                                }
                            }
                        }
                        ++$j;
                    }
                }
            }

            //if linkfields has no length then either _POST['formLink'] was not set, or there were no join conditions
            //just select from all seleted tables - a cartesian join do a
            if (!strlen($linkFields)) {
                foreach ($_POST['formTables'] as $curTable) {
                    $arrTmp = unserialize($curTable);
                    $data->fieldArrayClean($arrTmp);
                    $linkFields .= strlen($linkFields) ? ", \"{$arrTmp['schemaname']}\".\"{$arrTmp['tablename']}\"" : "\"{$arrTmp['schemaname']}\".\"{$arrTmp['tablename']}\"";
                }
            }

            $addConditions = '';
            if (is_array($_POST['formCondition'])) {
                foreach ($_POST['formCondition'] as $curCondition) {
                    if (strlen($curCondition['field']) && strlen($curCondition['txt'])) {
                        $arrTmp = unserialize($curCondition['field']);
                        $data->fieldArrayClean($arrTmp);
                        $addConditions .= strlen($addConditions) ? " AND \"{$arrTmp['schemaname']}\".\"{$arrTmp['tablename']}\".\"{$arrTmp['fieldname']}\" {$curCondition['operator']} '{$curCondition['txt']}' "
                        : " \"{$arrTmp['schemaname']}\".\"{$arrTmp['tablename']}\".\"{$arrTmp['fieldname']}\" {$curCondition['operator']} '{$curCondition['txt']}' ";
                    }
                }
            }

            $viewQuery = "SELECT ${selFields} FROM ${linkFields} ";

            //add where from additional conditions
            if (strlen($addConditions)) {
                $viewQuery .= ' WHERE ' . $addConditions;
            }

            $status = $data->createView($_POST['formView'], $viewQuery, false, $_POST['formComment']);
            if (0 == $status) {
                $this->misc->setReloadBrowser(true);
                $this->doDefault($lang['strviewcreated']);
            } else {
                $this->doSetParamsCreate($lang['strviewcreatedbad']);
            }
        }
    }
}