org.bytedeco.javacpp

Class opencv_core.FileNode

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.opencv_core.FileNode

All Implemented Interfaces:

AutoCloseable

Enclosing class:

opencv_core

@Namespace(value="cv")
@NoOffset
public static class opencv_core.FileNode
extends Pointer

\brief File Storage Node class.

The node is used to store each and every element of the file storage opened for reading. When XML/YAML file is read, it is first parsed and stored in the memory as a hierarchical collection of nodes. Each node can be a “leaf” that is contain a single number or a string, or be a collection of other nodes. There can be named collections (mappings) where each element has a name and it is accessed by a name, and ordered collections (sequences) where elements do not have names but rather accessed by index. Type of the file node can be determined using FileNode::type method.

Note that file nodes are only used for navigating file storages opened for reading. When a file storage is opened for writing, no data is stored in memory after it is written.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator

Field Summary

Fields

Modifier and Type	Field and Description
static int	EMPTY enum cv::FileNode::Type
static int	FLOAT enum cv::FileNode::Type
static int	FLOW enum cv::FileNode::Type
static int	INT enum cv::FileNode::Type
static int	MAP enum cv::FileNode::Type
static int	NAMED enum cv::FileNode::Type
static int	NONE enum cv::FileNode::Type
static int	REAL enum cv::FileNode::Type
static int	REF enum cv::FileNode::Type
static int	SEQ enum cv::FileNode::Type
static int	STR enum cv::FileNode::Type
static int	STRING enum cv::FileNode::Type
static int	TYPE_MASK enum cv::FileNode::Type
static int	USER enum cv::FileNode::Type

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
opencv_core.FileNode() \brief The constructors.
opencv_core.FileNode(long size) Native array allocator.
opencv_core.FileNode(opencv_core.CvFileStorage fs, opencv_core.CvFileNode node) \overload
opencv_core.FileNode(opencv_core.FileNode node) \overload
opencv_core.FileNode(Pointer p) Pointer cast constructor.

Method Summary

Methods

Modifier and Type	Method and Description
BytePointer	asBytePointer() returns the node content as text string
double	asDouble() returns the node content as double
float	asFloat() returns the node content as float
int	asInt() returns the node content as an integer.
opencv_core.FileNodeIterator	begin() returns iterator pointing to the first node element
boolean	empty() returns true if the node is empty
opencv_core.FileNodeIterator	end() returns iterator pointing to the element following the last node element
opencv_core.CvFileStorage	fs()
opencv_core.FileNode	get(BytePointer nodename) \brief Returns element of a mapping node or a sequence node.
opencv_core.FileNode	get(int i) \overload
opencv_core.FileNode	get(String nodename)
boolean	isInt() returns true if the node is an integer
boolean	isMap() returns true if the node is a mapping
boolean	isNamed() returns true if the node has a name
boolean	isNone() returns true if the node is a "none" object
boolean	isReal() returns true if the node is a floating-point number
boolean	isSeq() returns true if the node is a sequence
boolean	isString() returns true if the node is a text string
opencv_core.CvFileNode	multiply() returns pointer to the underlying file node
BytePointer	name() returns the node name or an empty string if the node is nameless
opencv_core.CvFileNode	node()
opencv_core.FileNode	position(long position)
Pointer	readObj() reads the registered object and returns pointer to it
void	readRaw(BytePointer fmt, byte[] vec, long len)
void	readRaw(BytePointer fmt, ByteBuffer vec, long len)
void	readRaw(BytePointer fmt, BytePointer vec, long len) \brief Reads node elements to the buffer with the specified format.
void	readRaw(String fmt, byte[] vec, long len)
void	readRaw(String fmt, ByteBuffer vec, long len)
void	readRaw(String fmt, BytePointer vec, long len)
long	size() returns the number of elements in the node, if it is a sequence or mapping, or 1 otherwise.
int	type() \brief Returns type of the node.

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, hashCode, isNull, limit, limit, maxBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, position, put, setNull, sizeof, toString, totalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NONE

public static final int NONE

enum cv::FileNode::Type

See Also:

Constant Field Values

INT

public static final int INT

enum cv::FileNode::Type

See Also:

Constant Field Values

REAL

public static final int REAL

enum cv::FileNode::Type

See Also:

Constant Field Values

FLOAT

public static final int FLOAT

enum cv::FileNode::Type

See Also:

Constant Field Values

STR

public static final int STR

enum cv::FileNode::Type

See Also:

Constant Field Values

STRING

public static final int STRING

enum cv::FileNode::Type

See Also:

Constant Field Values

REF

public static final int REF

enum cv::FileNode::Type

See Also:

Constant Field Values

SEQ

public static final int SEQ

enum cv::FileNode::Type

See Also:

Constant Field Values

MAP

public static final int MAP

enum cv::FileNode::Type

See Also:

Constant Field Values

TYPE_MASK

public static final int TYPE_MASK

enum cv::FileNode::Type

See Also:

Constant Field Values

FLOW

public static final int FLOW

enum cv::FileNode::Type

See Also:

Constant Field Values

USER

public static final int USER

enum cv::FileNode::Type

See Also:

Constant Field Values

EMPTY

public static final int EMPTY

enum cv::FileNode::Type

See Also:

Constant Field Values

NAMED

public static final int NAMED

enum cv::FileNode::Type

See Also:

Constant Field Values

Constructor Detail

opencv_core.FileNode

public opencv_core.FileNode(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

opencv_core.FileNode

public opencv_core.FileNode(long size)

Native array allocator. Access with Pointer.position(long).

opencv_core.FileNode

public opencv_core.FileNode()

\brief The constructors.

These constructors are used to create a default file node, construct it from obsolete structures or from the another file node.

opencv_core.FileNode

public opencv_core.FileNode(@Const
                    opencv_core.CvFileStorage fs,
                    @Const
                    opencv_core.CvFileNode node)

\overload

Parameters:

fs - Pointer to the obsolete file storage structure.

node - File node to be used as initialization for the created file node.

opencv_core.FileNode

public opencv_core.FileNode(@Const@ByRef
                    opencv_core.FileNode node)

\overload

Parameters:

node - File node to be used as initialization for the created file node.

Method Detail

position

public opencv_core.FileNode position(long position)

Overrides:

position in class Pointer

get

@ByVal
@Name(value="operator []")
public opencv_core.FileNode get(@opencv_core.Str
                                       BytePointer nodename)

\brief Returns element of a mapping node or a sequence node.

Parameters:

nodename - Name of an element in the mapping node.

Returns:

Returns the element with the given identifier.

get

@ByVal
@Name(value="operator []")
public opencv_core.FileNode get(@opencv_core.Str
                                       String nodename)

get

@ByVal
@Name(value="operator []")
public opencv_core.FileNode get(int i)

\overload

Parameters:

i - Index of an element in the sequence node.

type

public int type()

\brief Returns type of the node.

Returns:

Type of the node. See FileNode::Type

empty

@Cast(value="bool")
public boolean empty()

returns true if the node is empty

isNone

@Cast(value="bool")
public boolean isNone()

returns true if the node is a "none" object

isSeq

@Cast(value="bool")
public boolean isSeq()

returns true if the node is a sequence

isMap

@Cast(value="bool")
public boolean isMap()

returns true if the node is a mapping

isInt

@Cast(value="bool")
public boolean isInt()

returns true if the node is an integer

isReal

@Cast(value="bool")
public boolean isReal()

returns true if the node is a floating-point number

isString

@Cast(value="bool")
public boolean isString()

returns true if the node is a text string

isNamed

@Cast(value="bool")
public boolean isNamed()

returns true if the node has a name

name

@opencv_core.Str
public BytePointer name()

returns the node name or an empty string if the node is nameless

size

@Cast(value="size_t")
public long size()

returns the number of elements in the node, if it is a sequence or mapping, or 1 otherwise.

asInt

@Name(value="operator int")
public int asInt()

returns the node content as an integer. If the node stores floating-point number, it is rounded.

asFloat

@Name(value="operator float")
public float asFloat()

returns the node content as float

asDouble

@Name(value="operator double")
public double asDouble()

returns the node content as double

asBytePointer

@Name(value="operator cv::String")
@opencv_core.Str
public BytePointer asBytePointer()

returns the node content as text string

multiply

@Name(value="operator *")
public opencv_core.CvFileNode multiply()

returns pointer to the underlying file node

begin

@ByVal
public opencv_core.FileNodeIterator begin()

returns iterator pointing to the first node element

end

@ByVal
public opencv_core.FileNodeIterator end()

returns iterator pointing to the element following the last node element

readRaw

public void readRaw(@opencv_core.Str
           BytePointer fmt,
           @Cast(value="uchar*")
           BytePointer vec,
           @Cast(value="size_t")
           long len)

\brief Reads node elements to the buffer with the specified format.

Usually it is more convenient to use operator >> instead of this method.

Parameters:

fmt - Specification of each array element. See \ref format_spec "format specification"

vec - Pointer to the destination array.

len - Number of elements to read. If it is greater than number of remaining elements then all of them will be read.

readRaw

public void readRaw(@opencv_core.Str
           String fmt,
           @Cast(value="uchar*")
           ByteBuffer vec,
           @Cast(value="size_t")
           long len)

readRaw

public void readRaw(@opencv_core.Str
           BytePointer fmt,
           @Cast(value="uchar*")
           byte[] vec,
           @Cast(value="size_t")
           long len)

readRaw

public void readRaw(@opencv_core.Str
           String fmt,
           @Cast(value="uchar*")
           BytePointer vec,
           @Cast(value="size_t")
           long len)

readRaw

public void readRaw(@opencv_core.Str
           BytePointer fmt,
           @Cast(value="uchar*")
           ByteBuffer vec,
           @Cast(value="size_t")
           long len)

readRaw

public void readRaw(@opencv_core.Str
           String fmt,
           @Cast(value="uchar*")
           byte[] vec,
           @Cast(value="size_t")
           long len)

readObj

public Pointer readObj()

reads the registered object and returns pointer to it

fs

@MemberGetter
@Const
public opencv_core.CvFileStorage fs()

node

@MemberGetter
@Const
public opencv_core.CvFileNode node()