# Class RelationLookup

The RelationLookup complex data type. Used to store object2object lookup tables for MANY-TO-MANY relationships between business objects

  AlphaDAO
  RelationLookup implements AlphaTypeInterface

Package: alpha::model::types
Copyright: Copyright (c) 2012, John Collins (founder of Alpha Framework). All rights reserved.

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License: The BSD License
Author: John Collins <dev@alphaframework.org>
Version: $Id: RelationLookup.inc 1618 2012-12-19 16:51:08Z alphadevx $
Since: 1.0
Located at model/types/RelationLookup.inc

Methods summary
`public` | # `__construct( mixed $leftClassName, mixed $rightClassName )` The constructor The constructor #### Throws ``FailedLookupCreateException`` ``IllegalArguementException`` #### Since 1.0 #### Overrides `AlphaDAO::__construct()`
`public string` | # `getLeftClassName( )` Get the leftClassName value Get the leftClassName value #### Returns `string` #### Since 1.0
`public string` | # `getRightClassName( )` Get the rightClassName value Get the rightClassName value #### Returns `string` #### Since 1.0
`public string` | # `getTableName( )` Custom getter for the TABLE_NAME, which can't be static in this class due to the lookup tablenames being different each time. Custom getter for the TABLE_NAME, which can't be static in this class due to the lookup tablenames being different each time. #### Returns `string` #### Throws ``AlphaException`` #### Since 1.0 #### Overrides `AlphaDAO::getTableName()`
`public array` | # `loadAllByAttribute( string $attribute, string $value, integer $start = 0, integer $limit = 0, string $orderBy = "OID", string $order = "ASC", boolean $ignoreClassType = false, array $constructorArgs = array() )` This custom version provides the left/right class names to the business object constructor, required for RelationLookup objects. This custom version provides the left/right class names to the business object constructor, required for RelationLookup objects. (non-PHPdoc) #### Parameters $attribute `string` $atribute The attribute to load the objects by. $value `string` $value The value of the attribute to load the objects by. $start `integer` $start The start of the SQL LIMIT clause, useful for pagination. $limit `integer` $limit The amount (limit) of objects to load, useful for pagination. $orderBy `string` $orderBy The name of the field to sort the objects by. $order `string` $order The order to sort the objects by. $ignoreClassType `boolean` $ignoreClassType Default is false, set to true if you want to load from overloaded tables and ignore the class type. $constructorArgs `array` $constructorArgs An optional array of contructor arguements to pass to the BOs that will be generated and returned. Supports a maximum of 5 arguements. #### Returns `array` An array containing objects of this type of business object. #### Throws ``BONotFoundException`` ``IllegalArguementException`` #### See alpha/model/AlphaDAO::loadAllByAttribute() #### Overrides `AlphaDAO::loadAllByAttribute()`
`public string` | # `getHelper( )` Getter for the validation helper string Getter for the validation helper string #### Returns `string` #### Since 1.0 #### Implementation of `AlphaTypeInterface::getHelper()`
`public` | # `setHelper( string $helper )` Set the validation helper text Set the validation helper text #### Parameters $helper `string` $helper #### Since 1.0 #### Implementation of `AlphaTypeInterface::setHelper()`
`public array` | # `getValue( )` Returns an array of the OIDs of the related objects Returns an array of the OIDs of the related objects #### Returns `array` #### Since 1.0 #### Implementation of `AlphaTypeInterface::getValue()`
`public` | # `setValue( array $OIDs )` Used to set the OIDs of the related objects. Pass a two-item array of OIDs, the first one being the left object OID, the second being the right. Used to set the OIDs of the related objects. Pass a two-item array of OIDs, the first one being the left object OID, the second being the right. #### Parameters $OIDs `array` $OIDs #### Throws ``IllegalArguementException`` #### Since 1.0 #### Implementation of `AlphaTypeInterface::setValue()`
`public string` | # `__toString( )` Used to convert the object to a printable string Used to convert the object to a printable string #### Returns `string` #### Since 1.0 #### Implementation of `AlphaTypeInterface::__toString()`

Methods inherited from AlphaDAO
`__wakeup(), addProperty(), addToCache(), begin(), cast(), checkBOTableExists(), checkClassDefExists(), checkRecordExists(), checkTableExists(), checkTableNeedsUpdate(), commit(), createForeignIndex(), createUniqueIndex(), delete(), deleteAllByAttribute(), disconnect(), dropTable(), findMissingFields(), get(), getBOClassNames(), getConnection(), getCount(), getCreateTS(), getCreatorId(), getDataLabel(), getDataLabels(), getDefaultAttributes(), getFriendlyClassName(), getHistoryCount(), getID(), getIndexes(), getLastQuery(), getMAX(), getMaintainHistory(), getOID(), getPersistentAttributes(), getPropObject(), getTransientAttributes(), getUniqueAttributes(), getUpdateTS(), getUpdatorId(), getVersion(), getVersionNumber(), hasAttribute(), isInstalled(), isTableOverloaded(), isTagged(), isTransient(), load(), loadAll(), loadAllByAttributes(), loadAllByDayUpdated(), loadAllFieldValuesByAttribute(), loadByAttribute(), loadClassDef(), loadFromCache(), makeHistoryTable(), makeTable(), markPersistent(), markTransient(), markUnique(), populateFromArray(), populateFromPost(), query(), rebuildTable(), reload(), removeFromCache(), rollback(), save(), saveAttribute(), saveHistory(), set(), setDataLabels(), setEnumOptions(), setLastQuery(), setMaintainHistory(), setOID(), validate()`

Properties summary
`protected `Integer`` | $leftID | `` | # The OID of the left business object in the relation The OID of the left business object in the relation #### Since 1.0
`protected `Integer`` | $rightID | `` | # The OID of the right business object in the relation The OID of the right business object in the relation #### Since 1.0
`private string` | $leftClassName | `` | # The name of the left business object class in the relation The name of the left business object class in the relation #### Since 1.0
`private string` | $rightClassName | `` | # The name of the right business object class in the relation The name of the right business object class in the relation #### Since 1.0
`private static `Logger`` | $logger | `null` | # Trace logger Trace logger #### Since 1.0
`protected array` | $dataLabels | `array("OID"=>"RelationLookup ID#","leftID"=>"Left BO ID#","rightID"=>"Right BO ID#")` | # an array of data display labels for the class properties an array of data display labels for the class properties #### Since 1.0
`protected string` | $helper | `'Not a valid RelationLookup value!'` | # The message to display to the user when validation fails The message to display to the user when validation fails #### Since 1.0

Properties inherited from AlphaDAO
`$OID, $created_by, $created_ts, $defaultAttributes, $lastQuery, $transientAttributes, $uniqueAttributes, $updated_by, $updated_ts, $version_num`