se/SE/se-lib/Schema/SystemObjectFieldStorageAcl.php

<?php

Lib::loadClass('Core_AclSimpleSchemaBase');
Lib::loadClass('ParseOgcFilter');
Lib::loadClass('Router');

class Schema_SystemObjectFieldStorageAcl extends Core_AclSimpleSchemaBase {

  public $_simpleSchema = [
    'root' => [
      '@namespace' => 'default_objects/SystemObjectField',
      '@primaryKey' => 'namespace',
      'idZasob' => [ '@type' => 'xsd:integer' ],
      'idDatabase' => [ '@type' => 'xsd:integer' ],
      '_rootTableName' => [ '@type' => 'xsd:string' ],
      'namespace' => [ '@type' => 'xsd:string' ],
      'objectNamespace' => [ '@type' => 'xsd:string' ],
      'fieldNamespace' => [ '@type' => 'xsd:string' ],
      'xsdType' => [ '@type' => 'xsd:string' ],
      'xsdRestrictions' => [ '@type' => 'xsd:string' ],
      'minOccurs' => [ '@type' => 'xsd:string' ],
      'maxOccurs' => [ '@type' => 'xsd:string' ], //  '0..unbounded',
      'isActive' => [ '@type' => 'xsd:integer' ], // installed
      'description' => [ '@type' => 'xsd:string' ],
      // 'A_RECORD_CREATE_AUTHOR' => [ '@type' => 'xsd:string' , '@label' => 'autor' ],
      // 'A_RECORD_CREATE_DATE' => [ '@type' => 'xsd:date' , '@label' => 'utworzono' ],
      // 'A_RECORD_UPDATE_AUTHOR' => [ '@type' => 'xsd:string' , '@label' => 'zaktualizował' ],
      // 'A_RECORD_UPDATE_DATE' => [ '@type' => 'xsd:date', '@label' => 'zaktualizowano' ],
    ]
  ];
  // public $_rootTableName = 'CRM_LISTA_ZASOBOW';
  public $_rootTableName = 'CRM_#CACHE_ACL_OBJECT_FIELD';
  public $_version = '1';

  public function updateCache($namespace = null) {
    DBG::simpleLog('schema', "SystemObjectField::updateCache({$namespace})...");
    // DB::getPDO()->execSql(" drop table if exists `{$this->_rootTableName}` "); // TODO: DBG
    DB::getPDO()->execSql("
      create table if not exists `{$this->_rootTableName}` (
        `namespace` varchar(255) DEFAULT '',
        `fieldNamespace` varchar(255) DEFAULT '',
        `idZasob` int(11) DEFAULT NULL,
        `idDatabase` int(11) NOT NULL,
        `_rootTableName` varchar(255) DEFAULT '',
        `objectNamespace` varchar(255) DEFAULT '',
        `xsdType` varchar(255) DEFAULT '',
        `xsdRestrictions` varchar(1000) DEFAULT '',
        `minOccurs` int(11) DEFAULT '0',
        `maxOccurs` varchar(11) DEFAULT '1' COMMENT '0..unbounded',
        `isActive` tinyint(1) NOT NULL DEFAULT 0 COMMENT 'installed',
        `description` varchar(255) DEFAULT '',
        UNIQUE KEY `idZasob` (idZasob),
        PRIMARY KEY (`namespace`),
        KEY `isActive` (isActive)
      ) ENGINE=MyISAM  DEFAULT CHARSET=latin2
    ");
    // DB::getPDO()->execSql(" drop table if exists `{$this->_rootTableName}_enum` ");// TODO: DBG
    DB::getPDO()->execSql("
      create table if not exists `{$this->_rootTableName}_enum` (
        `namespace` varchar(255) DEFAULT '' COMMENT 'concat obj ns / field ns / value',
        `fieldNamespace` varchar(255) DEFAULT '',
        `objectNamespace` varchar(255) DEFAULT '',
        `value` varchar(255) DEFAULT '',
        `label` varchar(255) DEFAULT '',
        `isActive` tinyint(1) NOT NULL DEFAULT 0 COMMENT 'installed',
        KEY `objectNamespace` (`objectNamespace`),
        KEY `fieldNamespace` (`fieldNamespace`),
        KEY `isActive` (isActive)
      ) ENGINE=MyISAM  DEFAULT CHARSET=latin2
    ");
    DB::getPDO()->update($this->_rootTableName, 'objectNamespace', $namespace, ['isActive' => 0]);
    DB::getPDO()->update("{$this->_rootTableName}_enum", 'objectNamespace', $namespace, ['isActive' => 0]);
    $sysObjectStorage = SchemaFactory::loadDefaultObject('SystemObject');
    if (!$namespace) throw new Exception("Missing namespace '{$namespace}'");
    $objectItem = $sysObjectStorage->getItem($namespace);
    DBG::nicePrint($objectItem, '$objectItem');
    DBG::log($objectItem, 'array', '$objectItem');

    switch ($objectItem['_type']) {
      case 'AntAcl': $this->updateCacheAntAcl($objectItem); break;
      case 'TableAcl': $this->updateCacheTableAcl($objectItem); break;
      default: throw new Exception("TODO: Not Implemented type '{$objectItem['_type']}'");
    }
    // TODO: mv from methods: SchemaFactory::loadDefaultObject('SystemObject')->updateItem([
    //   'namespace' => $item['namespace'],
    //   'isStructInstalled' => 1
    // ]);
  }

  public function updateCacheAntAcl($item) {
		Lib::loadClass('AntAclBase');
		$antAclPath = APP_PATH_SCHEMA . DS . 'ant-object' . DS . str_replace(['__x3A__', ':'], ['.', '/'], $item['typeName']);
		if (!file_exists("{$antAclPath}/build.xml")) throw new Exception("Ant build file not exists");

		// if (file_exists("{$antAclPath}/{$item['name']}.xsd")) {
		// 	DBG::log("{$antAclPath}/{$item['name']}.xsd", 'string', 'xsd file exists');
		// 	$outputType = 'XML';
		// 	$antOutput = file_get_contents("{$antAclPath}/{$item['name']}.xsd");
		// } else {
		// 	DBG::log($antAclPath, 'string', '$antAclPath');
		// 	$antBin = APP_PATH_WWW . DS . 'stuff' . DS . 'dita-ot-2.3.3' . DS . 'bin' . DS . 'ant';
		// 	$cmd = "cd {$antAclPath} && {$antBin} DescribeFeatureType 2>&1";
		// 	V::exec($cmd, $out, $ret);
		// 	DBG::log($out, 'array', "DescribeFeatureType ret({$ret})");
		// 	$outputType = 'XML';
		// 	$antOutput = []; $startRead = false;
		// 	foreach ($out as $line) {
		// 		// $line = "     [echo] OUTPUT__TYPE__XML"
		// 		if ('[echo]' == substr(trim($line), 0, 6)) {
		// 			$line = trim(substr(trim($line), 7));
		// 		}
    //
		// 		if (!$startRead) {
		// 			if ('OUTPUT__TYPE__XML' == $line) $outputType = 'XML';
		// 			if ('OUTPUT__TYPE__HTML' == $line) $outputType = 'HTML';
		// 			if ('OUTPUT__START' == $line) {
		// 				$startRead = true;
		// 				continue;
		// 			}
		// 		} else {
		// 			if ('<!DOCTYPE' == substr($line, 0, strlen('<!DOCTYPE'))) continue;
		// 			if ('OUTPUT__END' == $line) {
		// 				break;
		// 			}
		// 			$antOutput[]= $line;
		// 		}
		// 	}
		// 	if (!empty($antOutput)) $antOutput = implode("\n", $antOutput);
		// }
		// if (empty($antOutput)) UI::alert('danger', "Empty output!");
		// else {
		// 	echo UI::h('p', [], "Ant Schema:");
		// 	if ('XML' == $outputType) {
		// 		echo UI::h('pre', ['style' => 'max-height:400px; overflow:scroll'], htmlspecialchars($antOutput));
		// 	} else if ('HTML' == $outputType) {
		// 		echo UI::h('div', ['class'=>"container", 'style'=>"padding:12px; border:1px solid #ddd"], $antOutput);
		// 	}
		// }

		Lib::loadClass('XML');
		$schema = XML::readXmlFileToArray("{$antAclPath}/{$item['name']}.xsd");
		if (empty($schema)) throw new Exception("Missing schema file for '{$item['namespace']}'");
		$xsdType = [ // find xsd:element with @name = $item['name']
			'nsPrefix' => null,
			'name' => null,
			'nsUri' => null,
			'targetNsUri' => V::get('targetNamespace', '', $schema[1])
		];
		if (!$xsdType['targetNsUri']) throw new Exception("Missing schema target namespace declaration '{$item['name']}'");
		foreach ($schema[2] as $n) {
			if ('xsd:element' != $n[0]) continue;
			if ($item['name'] != V::get('name', '', $n[1])) continue;
			list($xsdType['nsPrefix'], $xsdType['name']) = explode(':', V::get('type', '', $n[1]));
		}
		if (!$xsdType['nsPrefix'] || !$xsdType['name']) throw new Exception("Missing schema root element name = '{$item['name']}'");

		$xsdType['nsUri'] = V::get("xmlns:{$xsdType['nsPrefix']}", '', $schema[1]);// find xmlns:default_objects = "https://biuro.biall-net.pl/wfs/default_objects"
		if (!$xsdType['nsUri']) throw new Exception("Missing schema root element namespace declaration = '{$item['name']}'");
		if ($xsdType['nsUri'] != $xsdType['targetNsUri']) throw new Exception("TODO: type ns is not the same as targetNamespace '{$item['name']}'");// TODO

		foreach ($schema[2] as $n) {
			if ('xsd:complexType' != $n[0]) continue;
			if ($xsdType['name'] != V::get('name', '', $n[1])) continue;
			DBG::nicePrint($n, 'TODO: parse complexType');
			// complexType/complexContent/extension[base=...]/sequence/element
			if ($n[2][0][0] != 'xsd:complexContent') throw new Exception("Error Parsing Schema - expected 'complexType/complexContent'");
			if ($n[2][0][2][0][0] != 'xsd:extension') throw new Exception("Error Parsing Schema - expected 'complexType/complexContent/extension'");
			$xsdType['extensionBase'] = V::get('base', '', $n[2][0][2][0][1]);
			if ($n[2][0][2][0][2][0][0] != 'xsd:sequence') throw new Exception("Error Parsing Schema - expected 'complexType/complexContent/extension/sequence'");
			foreach ($n[2][0][2][0][2][0][2] as $f) {
				if ($f[0] !== 'xsd:element') {
					DBG::log($n, 'array', "Schema xsd parse error - Not implemented node type '{$f[0]}'");
					continue;
				}
				$fieldName = XML::findElementName($schema, $f); // V::get('name', '', $f[1]);
				if (!$fieldName) throw new Exception("Error Parsing Schema - expected 'element[@name]'");
				if ('__' === substr($fieldName, 0, 2)) continue;
				if (!V::get('type', '', $f[1]) && !V::get('ref', '', $f[1]) && empty($f[2])) {
					UI::alert('danger', "Skipping not implemented field structure '{$fieldName}'");
					continue;
				}
				$xsdType['struct'][$fieldName] = [
          'type' => XML::findElementType($schema, $f),
					'minOccurs' => V::get('minOccurs', 0, $f[1], 'int'),
					'maxOccurs' => V::get('maxOccurs', '1', $f[1]),
          'restrictions' => XML::findElementRestrictions($schema, $f),
				];
			}
		}

		DBG::nicePrint($xsdType, '$xsdType');
    if (empty($xsdType['struct'])) throw new Exception("Field list not found for '{$item['namespace']}'");
    foreach ($xsdType['struct'] as $fieldName => $x) {
      $listEnum = [];
      if (!empty($x['restrictions']['enumeration'])) {
        $listEnum = $x['restrictions']['enumeration'];
        unset($x['restrictions']['enumeration']);
      }
      DB::getPDO()->insertOrUpdate($this->_rootTableName, [
        'namespace' => "{$item['namespace']}/{$fieldName}",
        'objectNamespace' => $item['namespace'],
        'idDatabase' => $item['idDatabase'],
        '_rootTableName' => $item['_rootTableName'],
        'fieldNamespace' => $fieldName,
        'xsdType' => $x['type'],
        'xsdRestrictions' => json_encode($x['restrictions']),
        'minOccurs' => $x['minOccurs'],
        'maxOccurs' => $x['maxOccurs'],
        'isActive' => 1
      ]);
      if (!empty($listEnum)) {
        DBG::nicePrint($listEnum, '$listEnum');
        foreach ($listEnum as $value => $label) {
          DB::getPDO()->insertOrUpdate("{$this->_rootTableName}_enum", [
            'namespace' => "{$item['namespace']}/{$fieldName}/@{$value}",
            'fieldNamespace' => $fieldName,
            'objectNamespace' => $item['namespace'],
            'value' => $value,
            'label' => $label,
            'isActive' => 1
          ]);
        }
      }
    }
    SchemaFactory::loadDefaultObject('SystemObject')->updateItem([
      'namespace' => $item['namespace'],
      'isStructInstalled' => 1
    ]);
    $zasobTableName = substr($item['objectNamespace'], strlen('default_db/'));
		$zasobTableName = (false !== strpos($zasobTableName, '/'))
			? $item['objectNamespace']
			: $zasobTableName;
    DB::getPDO()->execSql("
      update `{$this->_rootTableName}` t
        join CRM_LISTA_ZASOBOW zp on(zp.PARENT_ID = {$item['idDatabase']} and zp.`DESC` = '{$zasobTableName}')
        join CRM_LISTA_ZASOBOW z on(z.PARENT_ID = zp.ID and z.`DESC` = t.fieldNamespace)
      set t.idZasob = z.ID
      where t.objectNamespace = '{$item['namespace']}'
    ");

		{// TODO: DBG
			DBG::nicePrint($schema, '$schema');
			Lib::loadClass('Core_XmlWriter');
			ob_start();
			$xmlWriter = new Core_XmlWriter();
			$xmlWriter->openUri('php://output');
			$xmlWriter->setIndent(true);
			$xmlWriter->startDocument('1.0','UTF-8');
			$xmlWriter->h($schema[0], $schema[1], $schema[2]);
			$xmlWriter->endDocument();
			echo UI::h('pre', ['style' => 'max-height:400px; overflow:scroll'], htmlspecialchars(ob_get_clean()));
		}
	}
  public function updateCacheTableAcl($item) {
    // TODO: xsdType - convert mysql type to xsdType, xsdRestrictions
    $xsdInfo = [];
    Lib::loadClass('SchemaHelper');
    $dbName = DB::getPDO()->getDatabaseName();
    $mysqlTypes = DB::getPDO()->fetchAll("
      select c.COLUMN_NAME, c.COLUMN_TYPE, c.DATA_TYPE, c.IS_NULLABLE, c.CHARACTER_MAXIMUM_LENGTH, c.NUMERIC_PRECISION, c.NUMERIC_SCALE
      from `information_schema`.`COLUMNS` c
      where c.TABLE_SCHEMA = '{$dbName}'
        and c.TABLE_NAME = '{$item['_rootTableName']}'
    ");
    foreach ($mysqlTypes as $mysqlType) {
      $xsdInfo[ $mysqlType['COLUMN_NAME'] ] = SchemaHelper::convertMysqlTypeToSchemaXsd($mysqlType);
    }
    DBG::nicePrint($xsdInfo, '$xsdInfo');

    foreach ($xsdInfo as $fieldName => $x) {
      $listEnum = [];
      if (!empty($x['restrictions']['enumeration'])) {
        $listEnum = $x['restrictions']['enumeration'];
        unset($x['restrictions']['enumeration']);
      }
      DB::getPDO()->insertOrUpdate($this->_rootTableName, [
        'namespace' => "{$item['namespace']}/{$fieldName}",
        'fieldNamespace' => $fieldName,
        'isActive' => 1,
        'idDatabase' => $item['idDatabase'],
        '_rootTableName' => $item['_rootTableName'],
        'objectNamespace' => $item['namespace'],
        'xsdType' => $x['type'],
        'xsdRestrictions' => json_encode($x['restrictions']),
      ]);
      if (!empty($listEnum)) {
        DBG::nicePrint($listEnum, '$listEnum');
        foreach ($listEnum as $value => $label) {
          DB::getPDO()->insertOrUpdate("{$this->_rootTableName}_enum", [
            'namespace' => "{$item['namespace']}/{$fieldName}/@{$value}",
            'fieldNamespace' => $fieldName,
            'objectNamespace' => $item['namespace'],
            'value' => $value,
            'label' => $label,
            'isActive' => 1
          ]);
        }
      }
    }
    SchemaFactory::loadDefaultObject('SystemObject')->updateItem([
      'namespace' => $item['namespace'],
      'isStructInstalled' => 1
    ]);
    $zasobTableName = substr($item['namespace'], strlen('default_db/'));
		$zasobTableName = (false !== strpos($zasobTableName, '/'))
			? $item['namespace']
			: $zasobTableName;
    DB::getPDO()->execSql("
      update `{$this->_rootTableName}` t
        join CRM_LISTA_ZASOBOW zp on(zp.PARENT_ID = {$item['idDatabase']} and zp.`DESC` = '{$zasobTableName}' and zp.PARENT_ID = {$item['idDatabase']})
        join CRM_LISTA_ZASOBOW z on(z.PARENT_ID = zp.ID and z.`DESC` = t.fieldNamespace)
      set t.idZasob = z.ID
      where t.objectNamespace = '{$item['namespace']}'
    ");

    $struct = $this->getItems([
      '__backRef' => [
        'namespace' => 'default_objects/SystemObject',
        'primaryKey' => $item['namespace']
      ]
    ]);
    DBG::nicePrint($struct, '$struct');

    {// TODO: DBG
      $schema = ['xsd:schema', [
        'xmlns:xsd' => "http://www.w3.org/2001/XMLSchema",
        'xmlns:gml' => "http://www.opengis.net/gml",
        'xmlns:p5' => "https://biuro.biall-net.pl/wfs",
        'xmlns:default_db' => "https://biuro.biall-net.pl/wfs/default_db",
        'xmlns:default_objects' => "https://biuro.biall-net.pl/wfs/default_objects",
        'elementFormDefault' => "qualified",
        'version' => "1.0.0",
      ], []];
      Lib::loadClass('Api_WfsNs');
      $tnsUri = Api_WfsNs::getNsUri($item['nsPrefix']);
      $schema[1]['xmlns:' . Api_WfsNs::getNsPrefix($tnsUri)] = $tnsUri;
      $schema[1]['targetNamespace'] = $tnsUri;
      $schema[2][] = ['xsd:import', ['namespace'=>"http://www.opengis.net/gml", 'schemaLocation'=>"https://biuro.biall-net.pl/dev-pl/se-master/schema/gml/2.1.2/feature.xsd"], null];
      $schema[2][] = ['xsd:complexType', [ 'name'=> $item['name'] . "Type" ], [
        [ 'xsd:complexContent', [], [
          [ 'xsd:extension', ['base'=>"gml:AbstractFeatureType"], [
            [ 'xsd:sequence', [], array_map(function ($field) {
              $attrs = [
                'name' => $field['fieldNamespace'],
                // <xsd:element minOccurs="1" maxOccurs="1" name="ID" type="xsd:integer" nillable="true"/>
                'minOccurs' => $field['minOccurs'],
                'maxOccurs' => $field['maxOccurs'],
              ];
              $childrens = null;
              $restrictions = [];
              foreach ($this->getXsdRestrictionsValue($field) as $k => $v) {
                if ('enumeration' == $k) {
                  foreach ($v as $enumValue) {
                    $restrictions[] = [ 'xsd:enumeration', [ 'value' => $enumValue ], null ];
                  }
                } else if ('maxLength' == $k) {
                  $restrictions[] = [ 'xsd:maxLength', [ 'value' => $v ], null ];
                } else if ('totalDigits' == $k) {
                  $restrictions[] = [ 'xsd:totalDigits', [ 'value' => $v ], null ];
                } else if ('fractionDigits' == $k) {
                  $restrictions[] = [ 'xsd:fractionDigits', [ 'value' => $v ], null ];
                } else if ('nillable' == $k) {
                  if ($v) $attrs['nillable'] = "true";
                } else {
                  DBG::log(['TODO' => $k, $v]);
                }
              }
              if (!empty($restrictions)) {
                $childrens = [
                  [ 'xsd:simpleType', [], [
                    [ 'xsd:restriction', [ 'base' => $field['xsdType'] ], $restrictions ]
                  ]]
                ];
              } else {
                $attrs['type'] = $field['xsdType'];
              }
              return [ 'xsd:element', $attrs, $childrens ];
            }, $struct)]
          ]]
        ]]
      ]];
      $schema[2][] = ['xsd:element', [ 'name' => $item['name'], 'type' => "{$item['nsPrefix']}:{$item['name']}Type", 'substitutionGroup' => "gml:_Feature" ], null];

			DBG::nicePrint($schema, '$schema');
			Lib::loadClass('Core_XmlWriter');
			ob_start();
			$xmlWriter = new Core_XmlWriter();
			$xmlWriter->openUri('php://output');
			$xmlWriter->setIndent(true);
			$xmlWriter->startDocument('1.0','UTF-8');
			$xmlWriter->h($schema[0], $schema[1], $schema[2]);
			$xmlWriter->endDocument();
			echo UI::h('pre', ['style' => 'max-height:400px; overflow:scroll'], htmlspecialchars(ob_get_clean()));
		}
  }

  public function _parseWhere($params = []) {
    $sqlWhere = [];
    DBG::log($params, 'array', "SystemObject::_parseWhere");
    if (!empty($params['__backRef'])) {
      // '__backRef' => [
      //     'namespace' => 'default_objects/SystemObject',
      //     'primaryKey' => 'default_db/TEST_PERMS',
      //  ),
      if (empty($params['__backRef']['namespace'])) throw new Exception("Missing refFrom/namespace");
      if (empty($params['__backRef']['primaryKey'])) throw new Exception("Missing refFrom/primaryKey");

      if ('default_objects/SystemObject' != $params['__backRef']['namespace']) throw new Exception("Unsupported refFrom/namespace '{$params['__backRef']['namespace']}'");
      $sqlWhere[] = "t.objectNamespace = " . DB::getPDO()->quote($params['__backRef']['primaryKey'], PDO::PARAM_INT);
    }
    {
      $filterParams = [];
      $xsdFields = $this->getXsdTypes();
      DBG::log($xsdFields);
      foreach ($params as $k => $v) {
        if ('f_' != substr($k, 0, 2)) continue;
        $fieldName = substr($k, 2);
        if (!array_key_exists($fieldName, $xsdFields)) {
          // TODO: check query by xpath or use different param prefix
          throw new Exception("Field '{$fieldName}' not found in '{$this->_namespace}'");
        }
        if ('p5:' == substr($xsdFields[$fieldName]['xsdType'], 0, 3)) {
          continue;
        }
        $filterParams[$fieldName] = $v;
      }
    }
    if (!empty($filterParams)) {
      DBG::log($filterParams, 'array', "SystemObject::_parseWhere TODO \$filterParams");
      foreach ($filterParams as $fieldName => $value) {
        if (is_array($value)) {
          DBG::log($value, 'array', "TODO SystemObject::_parseWhere array value for \$filterParams[{$fieldName}]");
        } else if (is_scalar($value)) {
          if ('=' == substr($value, 0, 1)) {
            $sqlWhere[] = "t.{$fieldName} = " . DB::getPDO()->quote(substr($value, 1), PDO::PARAM_STR);
          } else {
            $sqlWhere[] = "t.{$fieldName} like " . DB::getPDO()->quote("%{$value}%", PDO::PARAM_STR);
          }
        } else {
          DBG::log($value, 'array', "BUG SystemObject::_parseWhere unknown type for \$filterParams[{$fieldName}]");
        }
      }
    }
    return (!empty($sqlWhere)) ? "where " . implode(" and ", $sqlWhere) : '';
  }

  public function getTotal($params = []) {
    $sqlWhere = $this->_parseWhere($params);
    return DB::getPDO()->fetchValue("
      select count(1) as cnt
      from `{$this->_rootTableName}` t
      {$sqlWhere}
    ");
  }

  public function getItem($pk, $params = []) {
    if (!$pk) throw new Exception("Missing primary key '{$this->_namespace}'");
    $pkField = $this->getSqlPrimaryKeyField();
    if (!$pkField) throw new Exception("Missing primary key field defined in '{$this->_namespace}'");
    $sqlPk = DB::getPDO()->quote($pk, PDO::PARAM_STR);
    $item = DB::getPDO()->fetchFirst("
      select t.*
      from `{$this->_rootTableName}` t
      where t.`{$pkField}` = {$sqlPk}
    ");
    if (!$item) throw new Exception("Item '{$pk}' not exists - type '{$this->_namespace}'");
    return $this->buildFeatureFromSqlRow($item, $params);
  }

  public function getItems($params = []) {
    $sqlWhere = $this->_parseWhere($params);

    $currSortCol = V::get('order_by', 'idZasob', $params);
    $currSortFlip = strtolower(V::get('order_dir', 'desc', $params));
    // TODO: validate $currSortCol is in field list
    // TODO: validate $currSortFlip ('asc' or 'desc')
    $xsdFields = $this->getXsdTypes();
    if (!array_key_exists($currSortCol, $xsdFields)) throw new Exception("Field '{$currSortCol}' not found in '{$this->_namespace}'");
    if (!in_array($currSortFlip, ['asc', 'desc'])) throw new Exception("Sort dir not allowed");
    $sqlOrderBy = "order by t.`{$currSortCol}` {$currSortFlip}";

    $limit = V::get('limit', 0, $params, 'int');
    $limit = ($limit < 0) ? 0 : $limit;
    $offset = V::get('limitstart', 0, $params, 'int');
    $offset = ($offset < 0) ? 0 : $offset;
    $sqlLimit = ($limit > 0)
      ? "limit {$limit} offset {$offset}"
      : '';

    return array_map(array($this, 'buildFeatureFromSqlRow'), DB::getPDO()->fetchAll("
      select t.*
      from `{$this->_rootTableName}` t
      {$sqlWhere}
      {$sqlOrderBy}
      {$sqlLimit}
    "));
  }

  public function getXsdRestrictionsValue($item) {
    $xsdRestrictions = @json_decode($item['xsdRestrictions'], $assoc = true);
    if (empty($xsdRestrictions)) $xsdRestrictions = [];
    if (array_key_exists('__DBG__', $xsdRestrictions)) unset($xsdRestrictions['__DBG__']);
    return $xsdRestrictions;
  }

  public function buildFeatureFromSqlRow($item) {
    if ('p5:enum' == V::get('xsdType', '', $item)) {
      $xsdRestrictions = @json_decode($item['xsdRestrictions'], $assoc = true);
      $xsdRestrictions['enumeration'] = [];
      foreach (DB::getPDO()->fetchAll("
        select t.value, t.label
        from `{$this->_rootTableName}_enum` t
        where t.objectNamespace = '{$item['objectNamespace']}'
          and t.fieldNamespace = '{$item['fieldNamespace']}'
          and t.isActive = 1
      ") as $enum) {
        $xsdRestrictions['enumeration'][ $enum['value'] ] = $enum['label'];
      }
      $item['xsdRestrictions'] = json_encode($xsdRestrictions);
    }
    return $item;
  }

  public function updateItem($itemPatch) {
    $pkField = $this->getPrimaryKeyField();
    $pk = V::get($pkField, null, $itemPatch);
    if (null === $pk) throw new Exception("BUG missing primary key field for '{$this->_namespace}' updateItem");
    DBG::log(['updateItem $itemPatch', $itemPatch]);
    unset($itemPatch[$pkField]);
    if (empty($itemPatch)) return 0;
    foreach ($itemPatch as $fieldName => $value) {
      if ('idZasob' == $fieldName) continue;
      throw new Exception("Update field '{$fieldName}' not allowed for '{$this->_namespace}'");
    }
    return DB::getPDO()->update($this->_rootTableName, $pkField, $pk, $itemPatch);
  }

}