Class setasign\SetaPDF2\Core\DataStructure\Tree\NumberTree in SetaPDF v2 API Reference

Index

\setasign\SetaPDF2
1. Core
  1. DataStructure
    1. Tree

setasign\SetaPDF2\Core\DataStructure\Tree

NumberTree Data structure class for Number Trees

File: /SetaPDF v2/Core/DataStructure/Tree/NumberTree.php
Old class name (alias): \SetaPDF_Core_DataStructure_NumberTree

Class hierarchy

AbstractTree
- NumberTree

Implements

\setasign\SetaPDF2\Core\DataStructure\DataStructureInterface

Summary

Static Properties

$leafNodesPerNode

static public int AbstractTree::$leafNodesPerNode = 64

Leaf nodes per node

Properties

$_document

protected \SetaPDF_Core_Document AbstractTree::$_document

The document to which the tree depends to

$_isNew

protected bool AbstractTree::$_isNew = false

Is this a new tree or should we update an existing one

$_rootDictionary

protected \SetaPDF_Core_Type_Dictionary AbstractTree::$_rootDictionary

The dictionary entry in the dictionary of the root object

$_values

protected array AbstractTree::$_values = array()

A cache for resolved entries

The index is the key while the value is an array of both key and value object.

Methods

__construct()

public AbstractTree::__construct (

\SetaPDF_Core_Type_Dictionary $rootDictionary,
\SetaPDF_Core_Document $document

)

The constructor.

Parameters

$rootDictionary : \SetaPDF_Core_Type_Dictionary
$document : \SetaPDF_Core_Document

_findLastLeafNode()

protected AbstractTree::_findLastLeafNode (

\SetaPDF_Core_Type_Dictionary $node,
array &$intermediateNodes

): bool|\SetaPDF_Core_Type_Dictionary

Finds the last leaf node.

Parameters

$node : \SetaPDF_Core_Type_Dictionary
$intermediateNodes : array

Exceptions

Throws \setasign\SetaPDF2\Core\Type\Exception

_findLeaveNodeByKey()

protected AbstractTree::_findLeaveNodeByKey (

\SetaPDF_Core_Type_Dictionary $node,
int $key,
bool $exactMatch = true,
array &$intermediateNodes = array ( ),
&$kidsInfo = array ( )

): bool|\SetaPDF_Core_Type_Dictionary

Find a appropriate leaf node by a key.

Parameters

$node : \SetaPDF_Core_Type_Dictionary
$key : int
$exactMatch : bool
$intermediateNodes : array
$kidsInfo

Exceptions

Throws \setasign\SetaPDF2\Core\Type\Exception

_get()

protected AbstractTree::_get (

\SetaPDF_Core_Type_Dictionary $node,
string $key

): array|false

Gets a key value pair by a root node and a key.

Parameters

$node : \SetaPDF_Core_Type_Dictionary
$key : string

Exceptions

Throws \setasign\SetaPDF2\Core\Type\Exception

_getBlankLeafNodeObject()

private AbstractTree::_getBlankLeafNodeObject (

bool $intermediate = false

): \SetaPDF_Core_Type_IndirectObject

Helper method to create a blank leaf node

Parameters

$intermediate : bool

_getEntriesKeyName()

protected NumberTree::_getEntriesKeyName (

void

): string

Get the entries key name for this implementation.

See

AbstractTree::_getEntriesKeyName()

_getKeyClassName()

protected NumberTree::_getKeyClassName (

void

): string

Get the key class name used by this tree implementation.

See

AbstractTree::_getKeyClassName()

_getKeyInstanceName()

protected AbstractTree::_getKeyInstanceName (

void

): string

Get the key instance name by tree implementation.

_getSortType()

protected NumberTree::_getSortType (

void

): int

Get the sort type for this tree implementation.

See

AbstractTree::_getSortType()

add()

public AbstractTree::add (

int|string|\SetaPDF_Core_Type_ScalarValue $key,
\SetaPDF_Core_Type_AbstractType $value

): \SetaPDF_Core_Type_Numeric|\SetaPDF_Core_Type_String

Add a keyed value to the tree.

For name trees: Make sure you pass the name in PDFDocEncoding or UTF-16BE including BOM.

Parameters

$key : int|string|\SetaPDF_Core_Type_ScalarValue: Depends on the implementation
$value : \SetaPDF_Core_Type_AbstractType

Exceptions

Throws KeyAlreadyExistsException

Throws \setasign\SetaPDF2\Core\Type\Exception

See

AbstractTree::_getKeyClassName()

cleanUp()

public AbstractTree::cleanUp (

void

): void

Release objects to free memory and cycled references

After calling this method the instance of this object is unusable!

get()

public AbstractTree::get (

string|int $key,
string $className = null

): \SetaPDF_Core_Type_AbstractType|false|mixed

Get an object by a key.

Parameters

$key : string|int
$className : string

Exceptions

Throws \setasign\SetaPDF2\Core\Type\Exception

getAll()

public AbstractTree::getAll (

bool $keysOnly = false,
?string $className = null

): array

Get all keyed objects.

Parameters

$keysOnly : bool
$className : ?string

Exceptions

Throws \setasign\SetaPDF2\Core\Type\Exception

getEntriesKeyName()

public AbstractTree::getEntriesKeyName (

void

): string

Get the entries key name.

getValue()

public AbstractTree::getValue (

void

): \SetaPDF_Core_Type_Dictionary

Get the root dictionary entry

See

\setasign\SetaPDF2\Core\DataStructure\DataStructureInterface::getValue()

isNew()

public AbstractTree::isNew (

void

): bool

Checks whether this tree is new or initiated with existing entries.

merge()

public AbstractTree::merge (

\SetaPDF_Core_DataStructure_Tree $tree,
?callback $alreadyExistsCallback = null

): array

Merges another tree into this tree.

As all items have to be unique this method will call a callback function given in $alreadyExistsCallback if an item already exists.

Parameters

$tree : \SetaPDF_Core_DataStructure_Tree
$alreadyExistsCallback : ?callback: Will be called if a item already exists.
This method can take control over the renaming of the item. The method will be called as long as it will not throw an exception of KeyAlreadyExistsException.
The parameter of the callback function are: The key value and an incremental number of renaming attempts.