Class: I2CE FormStorage DB

This article desrcibes the1 class I2CE_FormStorage_DB.

• Extends the class: I2CE_FormStorage_Mechanism.
• Location: Part of the module forms-storage in the package I2CE
• Source: Defined in the file modules/Forms/modules/FormStorage/lib/I2CE_FormStorage_DB.php
• Author: Carl Leitner <litlfred@ibiblio.org>
• Since: v3.2.0

@filesource Class I2CE_Module_FormStorage_DB

Variables

$db

The database object

• Type: protected MDB2 $db

Methods

FF_populateHistory()

Populate the history of entries for the form field if the storage module handles history.

• Signature: public function FF_populateHistory($form_field)
• Parameters:
  • I2CE_FormField $form_field
• Returns: boolean

__construct()

Construct this module class

• Signature: public function __construct($name,$options)
• Parameters:
  • string $name
  • array $options

getFields()

Generates a SQL to select the required fields. @param mixed $expr array or class implementing ArrayAccess, Iterator, and Countable (e.g. MagicDataNode) . the where data. @param callback $field_refernece_callback. A callback function whose first arguement is the form, the second arguements is the field and which returns the way the field value should be references as a field. If the callback is null (the default) then the reference used is "$form+$field"

• Signature: public function getFields($form,$fields,$parent,$where_data,$ordering,$limit,$field_reference_callback,$mod_time)
• Parameters:
  • string $form
    The form we are select from
  • array $fields
    of string. the fields that we want to select. the keys are the fields names, the values are what we wish to select them as.
    • Default Value: array()
  • boolean $parent
    Defaults to false. If true, we include the parent id as a referenced field. If it is scalar and non-boolean, it is consider to be the ID of the parent, and then we get all forms with parent the given id.
  • $where_data
    • Default Value: array()
  • array $ordering
    An array of fields to order by. Defaults to the empty array. Prepend a - to order by in descending order.
    • Default Value: array()
  • mixed $limit
    Defaults to false. It true, returns only one result. If an integer it is the numeber of records to limit to. If it is as an array of two integers, it is the offset and then number of results to limit to.
    • Default Value: false
  • $field_reference_callback
    • Default Value: null
  • integer $mod_time
    Defaults to -1. If non-negative, we only list the requested fields for an id if at least one of them has a modification time greater than $mod_time. If the form storage has no way of tracking modifucation time, all entries are listed.
    • Default Value: -1
• Returns: string
  the SQL Query needed to get the form/field data or false on failure.

getIdsAsChild()

Gets the id's for the given child for this form.

• Signature: public function getIdsAsChild($form,$parent_form_id,$order_by,$where,$limit)
• Parameters:
  • string $form
  • mixed $parent_form_id
    the prent form and id @param array/string: an optional orderBy array of fields @param array where @param integer: A limit of the number of children ids to return
  • $order_by
  • $where
  • $limit
• Returns: array

getRecords()

Return an array of all the record ids for a given form.

• Signature: public function getRecords($form)
• Parameters:
  • string $form
• Returns: array

getRequiredFieldsQuery()

Construct a query (to be used as a sub-select) to view the fields of the given form. It always will return the id of the form as well @param callback $field_refernece_callback. A callback function whose first arguement is the form, the second arguements is the field and which returns the way the field value should be references as a field. If the callback is null (the default) then the reference used is "$form+$field"

• Signature: abstract public function getRequiredFieldsQuery($form,$fields,$id,$parent,$field_reference_callback,$mod_time)
• Parameters:
  • string $form
  • mixed $fields
    Either a string, the field, or an array of string, the fields.
  • mixed $id
    Defaults to null. If non-null it is the id that we wish to limit to.
    • Default Value: null
  • boolean $parent
    Defaults to false. If true, we include the parent id as a referenced field. If it is scalar and non-boolean, it is consider to be the ID of the parent, and then we get all forms with parent the given id.
    • Default Value: false
  • $field_reference_callback
    • Default Value: null
  • integer $mod_time
    Defaults to -1. If non-negative, we only list the requested fields for an id if at least one of them has a modification time greater than or equal to $mod_time. If the form storage has no way of tracking modifucation time, all entries are listed.
    • Default Value: -1
• Returns: string
  the query or false on failed.

listDisplayFields()

• Signature: public function listDisplayFields($form,$fields,$parent,$where_data,$ordering,$limit,$mod_time)
• Parameters:
  • string $form
  • array $fields
    of string. The fields we want returned
  • boolean $parent
    Defaults to false. If it is scalar and non-boolean, it is consider to be the ID of the parent, and then we get all forms with parent the given id. If true, we return the parent as one of the fields.
    • Default Value: false
  • array $where_data
    contains the where clause information about this form or a nested
    • Default Value: array()
  • array $ordering
    An array of fields to order by. Defaults to the empty array. Prepend a - to order by in descending order.
    • Default Value: array()
  • mixed $limit
    Defaults to false. It true, returns only one result. If an integer it is the numeber of records to limit to. If it is as an array of two integers, it is the offset and then number of results to limit to.
    • Default Value: false
  • integer $mod_time
    Defaults to -1. If non-negative, we only list the requested fields for an id if at least one of them has a modification time greater than or equal to $mod_time. If the form storage has no way of tracking modifucation time, all entries are listed.
    • Default Value: -1
• Returns: mixed
  an array with key id's and value and array of values. the array of values has as keys the fields with their corresponding value.

listFields()

• Signature: public function listFields($form,$fields,$parent,$where_data,$ordering,$limit,$mod_time)
• Parameters:
  • string $form
  • array $fields
    of string. The fields we want returned
  • boolean $parent
    Defaults to false. If it is scalar and non-boolean, it is consider to be the ID of the parent, and then we get all forms with parent the given id. If true, we return the parent as one of the fields.
    • Default Value: false
  • array $where_data
    contains the where clause information about this form or a nested
    • Default Value: array()
  • array $ordering
    An array of fields to order by. Defaults to the empty array. Prepend a - to order by in descending order.
    • Default Value: array()
  • mixed $limit
    Defaults to false. It true, returns only one result. If an integer it is the numeber of records to limit to. If it is as an array of two integers, it is the offset and then number of results to limit to.
    • Default Value: false
  • integer $mod_time
    Defaults to -1. If non-negative, we only list the requested fields for an id if at least one of them has a modification time greater than or equal to $mod_time. If the form storage has no way of tracking modifucation time, all entries are listed.
    • Default Value: -1
• Returns: mixed
  an array with key id's and value and array of values. the array of values has as keys the fields with their corresponding value.

lookupDisplayField()

Looks up the description of the item based on the code. This is the default method that most implementations of lookup () use. It finds the description of the object based on the code and saves it in the cache and returns it.

• Signature: public function lookupDisplayField($form,$id,$fields,$delim)
• Parameters:
  • string $form
    The name of the form in the database.
  • integer $id
    The code of the entry to lookup.
  • array $fields
    A list of fields to look up and return.
  • string $delim
    The delimiter to put between returned fields if there are more than one. If false, it returns it as an array.
• Returns: string
  false on failure

lookupField()

Looks up the description of the item based on the code. This is the default method that most implementations of lookup () use. It finds the description of the object based on the code and saves it in the cache and returns it.

• Signature: public function lookupField($form,$id,$fields,$delim)
• Parameters:
  • string $form
    The name of the form in the database.
  • integer $id
    The code of the entry to lookup.
  • array $fields
    A list of fields to look up and return.
  • string $delim
    The delimiter to put between returned fields if there are more than one. If false, it returns it as an array.
• Returns: string
  false on failure

populate()

Populate the member variables of the object from the database.

• Signature: public function populate($form)
• Parameters:
  • I2CE_Form $form

search()

• Signature: public function search($form,$parent,$where_data,$ordering,$limit)
• Parameters:
  • string $form
    The form name.
  • boolean $parent
    Defaults to false. If it is scalar and non-boolean, it is consider to be the ID of the parent, and then we get all forms with parent the given id.
    • Default Value: false
  • mixed $where_data
    array or class implementing ArrayAccess, Iterator, and Countable (e.g. MagicDataNode) . the where data.
    • Default Value: array()
  • array $ordering
    An array of fields to order by. Defaults to the empty array. Prepend a - to order by in descending order.
    • Default Value: array()
  • mixed $limit
    Defaults to false. It true, returns only one result. If an integer it is the numeber of records to limit to. If it is as an array of two integers, it is the offset and then number of results to limit to.
    • Default Value: false
• Returns: mixed
  an array of matching form ids. However, ff $limit_one is true or 1 or array ($offset,1) then then we return either the id or false, if none found or there was an error.

Inherited Methods

FF_IG_setSequence()

This public method is inherited from I2CE_FormStorage_Mechanism->FF_IG_setSequence()

FF_save()

This public method is inherited from I2CE_FormStorage_Mechanism->FF_save()

delete()

This public method is inherited from I2CE_FormStorage_Mechanism->delete()

getFormsById()

This public method is inherited from I2CE_FormStorage_Mechanism->getFormsById()

isWritable()

This public method is inherited from I2CE_FormStorage_Mechanism->isWritable()

populateHistory()

This public method is inherited from I2CE_FormStorage_Mechanism->populateHistory()

save()

This public method is inherited from I2CE_FormStorage_Mechanism->save()

compareFormsByFields()

This protected method is inherited from I2CE_FormStorage_Mechanism->compareFormsByFields()

getLimitedFields()

This protected method is inherited from I2CE_FormStorage_Mechanism->getLimitedFields()

_hasMethod()

This public method is inherited from I2CE_Fuzzy->_hasMethod()

Inherited Variables

$name

Theis protected variable is inherited from I2CE_FormStorage_Mechanism->$name

$global_options

Theis protected variable is inherited from I2CE_FormStorage_Mechanism->$global_options

$ordering

Theis protected variable is inherited from I2CE_FormStorage_Mechanism->$ordering

Inherited Fuzzy Methods

userMessage()

This method is inherited from I2CE_Fuzzy->userMessage()