java.lang.Object
- org.nd4j.linalg.api.buffer.BaseDataBuffer

All Implemented Interfaces:

Serializable, AutoCloseable, DataBuffer

Direct Known Subclasses:

CompressedDataBuffer
```
public abstract class BaseDataBuffer
extends Object
implements DataBuffer
```
See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface org.nd4j.linalg.api.buffer.DataBuffer
  DataBuffer.AllocationMode, DataBuffer.TypeEx

Field Summary

Fields
Modifier and Type	Field	Description
`protected DataBuffer.AllocationMode`	`allocationMode`
`protected boolean`	`attached`
`protected boolean`	`constant`
`protected byte`	`elementSize`
`protected org.bytedeco.javacpp.indexer.Indexer`	`indexer`
`protected long`	`length`
`protected long`	`offset`
`protected DataBuffer`	`originalBuffer`
`protected long`	`originalOffset`
`protected MemoryWorkspace`	`parentWorkspace`
`protected org.bytedeco.javacpp.Pointer`	`pointer`
`protected AtomicBoolean`	`referenced`
`protected boolean`	`released`
`static String`	`TO_STRING_MAX_ELEMENTS`	Deprecated. Use `ND4JSystemProperties.DATABUFFER_TO_STRING_MAX_ELEMENTS`
`protected DataType`	`type`
`protected long`	`underlyingLength`
`protected long`	`workspaceGenerationId`
`protected DataBuffer`	`wrappedDataBuffer`

Constructor Summary

Constructors
Modifier	Constructor	Description
	`BaseDataBuffer()`
	`BaseDataBuffer(org.bytedeco.javacpp.Pointer pointer, org.bytedeco.javacpp.indexer.Indexer indexer, long length)`	Meant for creating another view of a buffer
`protected`	`BaseDataBuffer(DataBuffer underlyingBuffer, long length, long offset)`	Meant for creating another view of a buffer

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`void`	`addReferencing(String id)`	Deprecated.
`long`	`address()`	Returns the address of the pointer
`abstract org.bytedeco.javacpp.Pointer`	`addressPointer()`	Returns the address of the pointer wrapped in a Pointer
`DataBuffer.AllocationMode`	`allocationMode()`	Allocation mode for buffers
`Object`	`array()`	Returns the backing array of this buffer (if there is one)
`byte[]`	`asBytes()`	Raw byte array storage
`double[]`	`asDouble()`	Return the buffer as a double array Relative to the datatype, this will either be a copy or a reference.
`float[]`	`asFloat()`	Return the buffer as a float array Relative to the datatype, this will either be a copy or a reference.
`int[]`	`asInt()`	Return the buffer as an int array Relative to the datatype, this will either be a copy or a reference.
`long[]`	`asLong()`	Return the buffer as an long array Relative to the datatype, this will either be a copy or a reference.
`ByteBuffer`	`asNio()`	Returns a view of this as an nio byte buffer
`DoubleBuffer`	`asNioDouble()`	Returns a view of this as an nio byte buffer
`FloatBuffer`	`asNioFloat()`	Returns a view of this as an nio byte buffer
`IntBuffer`	`asNioInt()`	Returns a view of this as an nio byte buffer
`LongBuffer`	`asNioLong()`
`void`	`assign(long[] indices, double[] data, boolean contiguous)`	Assign the given elements to the given indices
`void`	`assign(long[] indices, double[] data, boolean contiguous, long inc)`	Assign the given elements to the given indices
`void`	`assign(long[] indices, float[] data, boolean contiguous)`	Assign the given elements to the given indices
`void`	`assign(long[] indices, float[] data, boolean contiguous, long inc)`	Assign the given elements to the given indices
`void`	`assign(long[] offsets, long[] strides, long n, DataBuffer... buffers)`	Assign the given buffers to this buffer based on the given offsets and strides.
`void`	`assign(long[] offsets, long[] strides, DataBuffer... buffers)`	Assign the given buffers to this buffer based on the given offsets and strides.
`void`	`assign(Number value)`	Assign the given value to the buffer
`void`	`assign(Number value, long offset)`	Assign the given value to the buffer starting at offset
`void`	`assign(DataBuffer data)`	Assign the contents of this buffer to this buffer
`void`	`assign(DataBuffer... buffers)`	Assign the given data buffers to this buffer
`long`	`capacity()`
`void`	`close()`	This method releases exclusive off-heap resources uses by this DataBuffer instance.
`boolean`	`closeable()`	This method checks, if this DataBuffer instalce can use close() method
`void`	`copyAtStride(DataBuffer buf, long n, long stride, long yStride, long offset, long yOffset)`	Copies from the given buffer at the specified stride for up to n elements
`abstract DataBuffer`	`create(double[] data)`	Create the data buffer with respect to the given byte buffer
`abstract DataBuffer`	`create(float[] data)`	Create the data buffer with respect to the given byte buffer
`abstract DataBuffer`	`create(int[] data)`	Create the data buffer with respect to the given byte buffer
`protected abstract DataBuffer`	`create(long length)`	Create with length
`DataType`	`dataType()`	The data opType of the buffer
`void`	`destroy()`	release all resources for this buffer
`boolean`	`dirty()`	Deprecated.
`protected void`	`doReadObject(ObjectInputStream s)`
`DataBuffer`	`dup()`	Return a copy of this buffer
`boolean`	`equals(Object o)`
`protected void`	`fillPointerWithZero()`
`void`	`flush()`	Flush the data buffer
`static short`	`fromFloat(float v)`
`double`	`getDouble(long i)`	Get element i in the buffer as a double
`double[]`	`getDoublesAt(long offset, int length)`	Get the doubles at a particular offset
`double[]`	`getDoublesAt(long offset, long inc, int length)`	Get the doubles at a particular offset
`protected abstract double`	`getDoubleUnsynced(long index)`
`int`	`getElementSize()`	The number of bytes for each individual element
`float`	`getFloat(long i)`	Get element i in the buffer as a double
`float[]`	`getFloatsAt(long offset, int length)`	Get the doubles at a particular offset
`float[]`	`getFloatsAt(long offset, long inc, int length)`	Get the doubles at a particular offset
`protected abstract float`	`getFloatUnsynced(long index)`
`long`	`getGenerationId()`
`int`	`getInt(long i)`	Get the int at the specified index
`int[]`	`getIntsAt(long offset, int length)`	Get the ints at a particular offset
`int[]`	`getIntsAt(long offset, long inc, int length)`	Get the ints at a particular offset
`protected abstract int`	`getIntUnsynced(long index)`
`long`	`getLong(long i)`	Get element i in the buffer as long value
`long[]`	`getLongsAt(long offset, int length)`	Get the longs at a particular offset
`long[]`	`getLongsAt(long offset, long inc, int length)`	Get the long at a particular offset
`protected abstract long`	`getLongUnsynced(long index)`
`Number`	`getNumber(long i)`	Get element i in the buffer as a double
`MemoryWorkspace`	`getParentWorkspace()`	This method returns Workspace this DataBuffer is attached to
`protected short`	`getShort(long i)`	Special method for
`int`	`hashCode()`
`org.bytedeco.javacpp.indexer.Indexer`	`indexer()`	Returns the indexer for the buffer
`protected abstract void`	`initTypeAndSize()`	Initialize the opType of this buffer
`boolean`	`isAttached()`	This method returns True, if this DataBuffer is attached to some workspace.
`boolean`	`isConstant()`	This method returns whether this DataBuffer is constant, or not.
`boolean`	`isInScope()`	This method checks, if given attached INDArray is still in scope of its parent Workspace
`boolean`	`isPersist()`	Deprecated.
`long`	`length()`	Returns the length of the buffer
`protected void`	`markReleased()`
`long`	`offset()`	Returns the offset of the buffer
`DataBuffer`	`originalDataBuffer()`	Original DataBuffer.
`long`	`originalOffset()`	Returns the offset of the buffer relative to originalDataBuffer
`void`	`persist()`	Deprecated.
`protected void`	`pickReferent(BaseDataBuffer referent)`
`long`	`platformAddress()`	Returns the address of platform-specific pointer: - for native backend that'll be host pointer - for cuda backend that'll be device pointer
`org.bytedeco.javacpp.Pointer`	`pointer()`	Returns an underlying pointer if one exists
`abstract void`	`pointerIndexerByCurrentType(DataType currentType)`
`void`	`put(long i, boolean element)`
`void`	`put(long i, double element)`	Assign an element in the buffer to the specified index
`void`	`put(long i, float element)`	Assign an element in the buffer to the specified index
`void`	`put(long i, int element)`	Assign an element in the buffer to the specified index
`void`	`put(long i, long element)`
`void`	`putByDestinationType(long i, Number element, DataType globalType)`
`void`	`read(DataInputStream s, @NonNull DataBuffer.AllocationMode allocMode, long len, @NonNull DataType dtype)`
`void`	`read(InputStream is, DataBuffer.AllocationMode allocationMode, long length, DataType dataType)`	Write this buffer to the input stream.
`protected void`	`readContent(DataInputStream s, DataType sourceType, DataType thisType)`
`static Triple<DataBuffer.AllocationMode,Long,DataType>`	`readHeader(@NonNull InputStream is)`
`abstract DataBuffer`	`reallocate(long length)`	Reallocate the native memory of the buffer
`Collection<String>`	`references()`	Deprecated.
`protected void`	`release()`
`void`	`removeReferencing(String id)`	Deprecated.
`boolean`	`sameUnderlyingData(DataBuffer buffer)`	Returns true if the underlying data source is the same for both buffers (referential equals)
`void`	`setConstant(boolean reallyConstant)`	This method allows you to mark databuffer as constant.
`void`	`setData(boolean[] data)`
`void`	`setData(byte[] data)`
`void`	`setData(double[] data)`	Set the data for this buffer
`void`	`setData(float[] data)`	Set the data for this buffer
`void`	`setData(int[] data)`	Set the data for this buffer
`void`	`setData(long[] data)`	Set the data for this buffer
`void`	`setData(short[] data)`
`protected void`	`setIndexer(org.bytedeco.javacpp.indexer.Indexer indexer)`
`protected void`	`setNioBuffer()`
`abstract void`	`syncToPrimary()`	This method synchronizes host memory
`abstract void`	`syncToSpecial()`	This method synchronizes device memory
`float`	`toFloat(int hbits)`
`String`	`toString()`
`DataBuffer`	`underlyingDataBuffer()`	Underlying buffer: This is meant for a data buffer to be a view of another data buffer
`long`	`underlyingLength()`	Returns the length of the buffer
`void`	`unPersist()`	Deprecated.
`boolean`	`wasClosed()`	This method checks if array or its buffer was closed before
`protected ByteBuffer`	`wrappedBuffer()`
`void`	`write(DataOutputStream out)`
`void`	`write(OutputStream dos)`	Write this buffer to the output stream

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - TO_STRING_MAX_ELEMENTS
```
public static String TO_STRING_MAX_ELEMENTS
```
    Deprecated.
    Use ND4JSystemProperties.DATABUFFER_TO_STRING_MAX_ELEMENTS
  - type
```
protected DataType type
```
  - length
```
protected long length
```
  - underlyingLength
```
protected long underlyingLength
```
  - offset
```
protected long offset
```
  - elementSize
```
protected byte elementSize
```
  - wrappedDataBuffer
```
protected transient DataBuffer wrappedDataBuffer
```
  - workspaceGenerationId
```
protected transient long workspaceGenerationId
```
  - allocationMode
```
protected DataBuffer.AllocationMode allocationMode
```
  - indexer
```
protected transient org.bytedeco.javacpp.indexer.Indexer indexer
```
  - pointer
```
protected transient org.bytedeco.javacpp.Pointer pointer
```
  - attached
```
protected transient boolean attached
```
  - parentWorkspace
```
protected transient MemoryWorkspace parentWorkspace
```
  - originalBuffer
```
protected transient DataBuffer originalBuffer
```
  - originalOffset
```
protected transient long originalOffset
```
  - constant
```
protected transient boolean constant
```
  - released
```
protected transient boolean released
```
  - referenced
```
protected transient AtomicBoolean referenced
```
- Constructor Detail
  - BaseDataBuffer
```
public BaseDataBuffer()
```
  - BaseDataBuffer
```
public BaseDataBuffer(org.bytedeco.javacpp.Pointer pointer,
                      org.bytedeco.javacpp.indexer.Indexer indexer,
                      long length)
```
    Meant for creating another view of a buffer
    
    Parameters:
    
    pointer - the underlying buffer to create a view from
    
    indexer - the indexer for the pointer
    
    length - the length of the view
  - BaseDataBuffer
```
protected BaseDataBuffer(DataBuffer underlyingBuffer,
                         long length,
                         long offset)
```
    Meant for creating another view of a buffer
    
    Parameters:
    
    underlyingBuffer - the underlying buffer to create a view from
    
    length - the length of the view
    
    offset - the offset for the view
- Method Detail
  - initTypeAndSize
```
protected abstract void initTypeAndSize()
```
    Initialize the opType of this buffer
  - getElementSize
```
public int getElementSize()
```
    Description copied from interface: DataBuffer
    
    The number of bytes for each individual element
    
    Specified by:
    
    getElementSize in interface DataBuffer
    
    Returns:
    
    the number of bytes for each individual element
  - getGenerationId
```
public long getGenerationId()
```
    Specified by:
    
    getGenerationId in interface DataBuffer
  - setIndexer
```
protected void setIndexer(org.bytedeco.javacpp.indexer.Indexer indexer)
```
  - pickReferent
```
protected void pickReferent(BaseDataBuffer referent)
```
  - originalDataBuffer
```
public DataBuffer originalDataBuffer()
```
    Original DataBuffer. In case if we have a view derived from another view, derived from some other view, original DataBuffer will point to the originating DataBuffer, where all views come from.
    
    Specified by:
    
    originalDataBuffer in interface DataBuffer
  - setNioBuffer
```
protected void setNioBuffer()
```
  - indexer
```
public org.bytedeco.javacpp.indexer.Indexer indexer()
```
    Returns the indexer for the buffer
    
    Specified by:
    
    indexer in interface DataBuffer
    
    Returns:
  - pointer
```
public org.bytedeco.javacpp.Pointer pointer()
```
    Description copied from interface: DataBuffer
    
    Returns an underlying pointer if one exists
    
    Specified by:
    
    pointer in interface DataBuffer
    
    Returns:
  - underlyingDataBuffer
```
public DataBuffer underlyingDataBuffer()
```
    Description copied from interface: DataBuffer
    
    Underlying buffer: This is meant for a data buffer to be a view of another data buffer
    
    Specified by:
    
    underlyingDataBuffer in interface DataBuffer
    
    Returns:
  - offset
```
public long offset()
```
    Description copied from interface: DataBuffer
    
    Returns the offset of the buffer
    
    Specified by:
    
    offset in interface DataBuffer
    
    Returns:
    
    the offset of the buffer
  - allocationMode
```
public DataBuffer.AllocationMode allocationMode()
```
    Description copied from interface: DataBuffer
    
    Allocation mode for buffers
    
    Specified by:
    
    allocationMode in interface DataBuffer
    
    Returns:
    
    the allocation mode for the buffer
  - persist
```
@Deprecated
public void persist()
```
    Deprecated.
    
    Description copied from interface: DataBuffer
    
    Mark this buffer as persistent
    
    Specified by:
    
    persist in interface DataBuffer
  - isPersist
```
@Deprecated
public boolean isPersist()
```
    Deprecated.
    
    Description copied from interface: DataBuffer
    
    Whether the buffer should be persistent. This is mainly for the aggressive garbage collection strategy.
    
    Specified by:
    
    isPersist in interface DataBuffer
    
    Returns:
    
    whether the buffer should be persistent or not (default false)
  - unPersist
```
@Deprecated
public void unPersist()
```
    Deprecated.
    
    Description copied from interface: DataBuffer
    
    Un persist the buffer
    
    Specified by:
    
    unPersist in interface DataBuffer
  - fillPointerWithZero
```
protected void fillPointerWithZero()
```
  - copyAtStride
```
public void copyAtStride(DataBuffer buf,
                         long n,
                         long stride,
                         long yStride,
                         long offset,
                         long yOffset)
```
    Description copied from interface: DataBuffer
    
    Copies from the given buffer at the specified stride for up to n elements
    
    Specified by:
    
    copyAtStride in interface DataBuffer
    
    Parameters:
    
    buf - the data buffer to copy from
    
    n - the number of elements to copy
    
    stride - the stride to copy at
  - removeReferencing
```
@Deprecated
public void removeReferencing(String id)
```
    Deprecated.
    
    Description copied from interface: DataBuffer
    
    Remove the referenced id if it exists
    
    Specified by:
    
    removeReferencing in interface DataBuffer
    
    Parameters:
    
    id - the id to remove
  - references
```
@Deprecated
public Collection<String> references()
```
    Deprecated.
    
    Description copied from interface: DataBuffer
    
    The referencers pointing to this buffer
    
    Specified by:
    
    references in interface DataBuffer
    
    Returns:
    
    the references pointing to this buffer
  - addressPointer
```
public abstract org.bytedeco.javacpp.Pointer addressPointer()
```
    Description copied from interface: DataBuffer
    
    Returns the address of the pointer wrapped in a Pointer
    
    Specified by:
    
    addressPointer in interface DataBuffer
    
    Returns:
    
    the address of the pointer wrapped in a Pointer
  - address
```
public long address()
```
    Description copied from interface: DataBuffer
    
    Returns the address of the pointer
    
    Specified by:
    
    address in interface DataBuffer
    
    Returns:
    
    the address of the pointer
  - addReferencing
```
@Deprecated
public void addReferencing(String id)
```
    Deprecated.
    
    Description copied from interface: DataBuffer
    
    Add a referencing element to this buffer
    
    Specified by:
    
    addReferencing in interface DataBuffer
    
    Parameters:
    
    id - the id to reference
  - assign
```
public void assign(long[] indices,
                   float[] data,
                   boolean contiguous,
                   long inc)
```
    Description copied from interface: DataBuffer
    
    Assign the given elements to the given indices
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    indices - the indices to assign
    
    data - the data to assign
    
    contiguous - whether the indices are contiguous or not
    
    inc - the number to increment by when assigning
  - setData
```
public void setData(int[] data)
```
    Description copied from interface: DataBuffer
    
    Set the data for this buffer
    
    Specified by:
    
    setData in interface DataBuffer
    
    Parameters:
    
    data - the data for this buffer
  - setData
```
public void setData(float[] data)
```
    Description copied from interface: DataBuffer
    
    Set the data for this buffer
    
    Specified by:
    
    setData in interface DataBuffer
    
    Parameters:
    
    data - the data for this buffer
  - setData
```
public void setData(double[] data)
```
    Description copied from interface: DataBuffer
    
    Set the data for this buffer
    
    Specified by:
    
    setData in interface DataBuffer
    
    Parameters:
    
    data - the data for this buffer
  - setData
```
public void setData(long[] data)
```
    Description copied from interface: DataBuffer
    
    Set the data for this buffer
    
    Specified by:
    
    setData in interface DataBuffer
    
    Parameters:
    
    data - the data for this buffer
  - setData
```
public void setData(byte[] data)
```
    Specified by:
    
    setData in interface DataBuffer
  - setData
```
public void setData(short[] data)
```
    Specified by:
    
    setData in interface DataBuffer
  - setData
```
public void setData(boolean[] data)
```
    Specified by:
    
    setData in interface DataBuffer
  - assign
```
public void assign(long[] indices,
                   double[] data,
                   boolean contiguous,
                   long inc)
```
    Description copied from interface: DataBuffer
    
    Assign the given elements to the given indices
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    indices - the indices to assign
    
    data - the data to assign
    
    contiguous - whether the data is contiguous or not
    
    inc - the number to increment by when assigning
  - assign
```
public void assign(DataBuffer data)
```
    Description copied from interface: DataBuffer
    
    Assign the contents of this buffer to this buffer
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    data - the data to assign
  - assign
```
public void assign(long[] indices,
                   float[] data,
                   boolean contiguous)
```
    Description copied from interface: DataBuffer
    
    Assign the given elements to the given indices
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    indices - the indices to assign
    
    data - the data to assign
    
    contiguous - whether the indices are contiguous or not
  - assign
```
public void assign(long[] indices,
                   double[] data,
                   boolean contiguous)
```
    Description copied from interface: DataBuffer
    
    Assign the given elements to the given indices
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    indices - the indices to assign
    
    data - the data to assign
    
    contiguous - whether the data is contiguous or not
  - underlyingLength
```
public long underlyingLength()
```
    Description copied from interface: DataBuffer
    
    Returns the length of the buffer
    
    Specified by:
    
    underlyingLength in interface DataBuffer
    
    Returns:
    
    the length of the buffer
  - length
```
public long length()
```
    Description copied from interface: DataBuffer
    
    Returns the length of the buffer
    
    Specified by:
    
    length in interface DataBuffer
    
    Returns:
    
    the length of the buffer
  - assign
```
public void assign(Number value)
```
    Description copied from interface: DataBuffer
    
    Assign the given value to the buffer
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    value - the value to assign
  - getDoublesAt
```
public double[] getDoublesAt(long offset,
                             long inc,
                             int length)
```
    Description copied from interface: DataBuffer
    
    Get the doubles at a particular offset
    
    Specified by:
    
    getDoublesAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    inc - the increment to use
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - getDoublesAt
```
public double[] getDoublesAt(long offset,
                             int length)
```
    Description copied from interface: DataBuffer
    
    Get the doubles at a particular offset
    
    Specified by:
    
    getDoublesAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - getFloatsAt
```
public float[] getFloatsAt(long offset,
                           int length)
```
    Description copied from interface: DataBuffer
    
    Get the doubles at a particular offset
    
    Specified by:
    
    getFloatsAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - getFloatsAt
```
public float[] getFloatsAt(long offset,
                           long inc,
                           int length)
```
    Description copied from interface: DataBuffer
    
    Get the doubles at a particular offset
    
    Specified by:
    
    getFloatsAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    inc - the increment to use
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - getLongsAt
```
public long[] getLongsAt(long offset,
                         int length)
```
    Description copied from interface: DataBuffer
    
    Get the longs at a particular offset
    
    Specified by:
    
    getLongsAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - getLongsAt
```
public long[] getLongsAt(long offset,
                         long inc,
                         int length)
```
    Description copied from interface: DataBuffer
    
    Get the long at a particular offset
    
    Specified by:
    
    getLongsAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    inc - the increment to use
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - getIntsAt
```
public int[] getIntsAt(long offset,
                       int length)
```
    Description copied from interface: DataBuffer
    
    Get the ints at a particular offset
    
    Specified by:
    
    getIntsAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - getIntsAt
```
public int[] getIntsAt(long offset,
                       long inc,
                       int length)
```
    Description copied from interface: DataBuffer
    
    Get the ints at a particular offset
    
    Specified by:
    
    getIntsAt in interface DataBuffer
    
    Parameters:
    
    offset - the offset to start
    
    inc - the increment to use
    
    length - the length of the array
    
    Returns:
    
    the doubles at the specified offset and length
  - dup
```
public DataBuffer dup()
```
    Description copied from interface: DataBuffer
    
    Return a copy of this buffer
    
    Specified by:
    
    dup in interface DataBuffer
    
    Returns:
    
    a copy of this buffer
  - create
```
protected abstract DataBuffer create(long length)
```
    Create with length
    
    Parameters:
    
    length - a databuffer of the same opType as this with the given length
    
    Returns:
    
    a data buffer with the same length and datatype as this one
  - create
```
public abstract DataBuffer create(double[] data)
```
    Create the data buffer with respect to the given byte buffer
    
    Parameters:
    
    data - the buffer to create
    
    Returns:
    
    the data buffer based on the given buffer
  - create
```
public abstract DataBuffer create(float[] data)
```
    Create the data buffer with respect to the given byte buffer
    
    Parameters:
    
    data - the buffer to create
    
    Returns:
    
    the data buffer based on the given buffer
  - create
```
public abstract DataBuffer create(int[] data)
```
    Create the data buffer with respect to the given byte buffer
    
    Parameters:
    
    data - the buffer to create
    
    Returns:
    
    the data buffer based on the given buffer
  - assign
```
public void assign(long[] offsets,
                   long[] strides,
                   DataBuffer... buffers)
```
    Description copied from interface: DataBuffer
    
    Assign the given buffers to this buffer based on the given offsets and strides. Note that the offsets and strides must be of equal length to the number of buffers
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    offsets - the offsets to use
    
    strides - the strides to use
    
    buffers - the buffers to assign data from
  - asBytes
```
public byte[] asBytes()
```
    Description copied from interface: DataBuffer
    
    Raw byte array storage
    
    Specified by:
    
    asBytes in interface DataBuffer
    
    Returns:
    
    the data represented as a raw byte array
  - asFloat
```
public float[] asFloat()
```
    Description copied from interface: DataBuffer
    
    Return the buffer as a float array Relative to the datatype, this will either be a copy or a reference. The reference is preferred for faster access of data and no copying
    
    Specified by:
    
    asFloat in interface DataBuffer
    
    Returns:
    
    the buffer as a float
  - asDouble
```
public double[] asDouble()
```
    Description copied from interface: DataBuffer
    
    Return the buffer as a double array Relative to the datatype, this will either be a copy or a reference. The reference is preferred for faster access of data and no copying
    
    Specified by:
    
    asDouble in interface DataBuffer
    
    Returns:
    
    the buffer as a float
  - asInt
```
public int[] asInt()
```
    Description copied from interface: DataBuffer
    
    Return the buffer as an int array Relative to the datatype, this will either be a copy or a reference. The reference is preferred for faster access of data and no copying
    
    Specified by:
    
    asInt in interface DataBuffer
    
    Returns:
    
    the buffer as a int
  - asLong
```
public long[] asLong()
```
    Description copied from interface: DataBuffer
    
    Return the buffer as an long array Relative to the datatype, this will either be a copy or a reference. The reference is preferred for faster access of data and no copying
    
    Specified by:
    
    asLong in interface DataBuffer
    
    Returns:
    
    the buffer as a long
  - getDouble
```
public double getDouble(long i)
```
    Description copied from interface: DataBuffer
    
    Get element i in the buffer as a double
    
    Specified by:
    
    getDouble in interface DataBuffer
    
    Parameters:
    
    i - the element to getFloat
    
    Returns:
    
    the element at this index
  - getLong
```
public long getLong(long i)
```
    Description copied from interface: DataBuffer
    
    Get element i in the buffer as long value
    
    Specified by:
    
    getLong in interface DataBuffer
    
    Returns:
  - getShort
```
protected short getShort(long i)
```
    Special method for
    
    Parameters:
    
    i -
    
    Returns:
  - fromFloat
```
public static short fromFloat(float v)
```
    Parameters:
    
    v -
    
    Returns:
  - getFloat
```
public float getFloat(long i)
```
    Description copied from interface: DataBuffer
    
    Get element i in the buffer as a double
    
    Specified by:
    
    getFloat in interface DataBuffer
    
    Parameters:
    
    i - the element to getFloat
    
    Returns:
    
    the element at this index
  - getInt
```
public int getInt(long i)
```
    Description copied from interface: DataBuffer
    
    Get the int at the specified index
    
    Specified by:
    
    getInt in interface DataBuffer
    
    Parameters:
    
    i - the int at the specified index
    
    Returns:
    
    the int at the specified index
  - getNumber
```
public Number getNumber(long i)
```
    Description copied from interface: DataBuffer
    
    Get element i in the buffer as a double
    
    Specified by:
    
    getNumber in interface DataBuffer
    
    Parameters:
    
    i - the element to getFloat
    
    Returns:
    
    the element at this index
  - pointerIndexerByCurrentType
```
public abstract void pointerIndexerByCurrentType(DataType currentType)
```
  - putByDestinationType
```
public void putByDestinationType(long i,
                                 Number element,
                                 DataType globalType)
```
  - put
```
public void put(long i,
                float element)
```
    Description copied from interface: DataBuffer
    
    Assign an element in the buffer to the specified index
    
    Specified by:
    
    put in interface DataBuffer
    
    Parameters:
    
    i - the index
    
    element - the element to assign
  - put
```
public void put(long i,
                double element)
```
    Description copied from interface: DataBuffer
    
    Assign an element in the buffer to the specified index
    
    Specified by:
    
    put in interface DataBuffer
    
    Parameters:
    
    i - the index
    
    element - the element to assign
  - put
```
public void put(long i,
                int element)
```
    Description copied from interface: DataBuffer
    
    Assign an element in the buffer to the specified index
    
    Specified by:
    
    put in interface DataBuffer
    
    Parameters:
    
    i - the index
    
    element - the element to assign
  - put
```
public void put(long i,
                boolean element)
```
    Specified by:
    
    put in interface DataBuffer
  - put
```
public void put(long i,
                long element)
```
    Specified by:
    
    put in interface DataBuffer
  - dirty
```
@Deprecated
public boolean dirty()
```
    Deprecated.
    
    Description copied from interface: DataBuffer
    
    Whether the buffer is dirty: aka has been updated
    
    Specified by:
    
    dirty in interface DataBuffer
    
    Returns:
    
    true if the buffer has been updated, false otherwise
  - sameUnderlyingData
```
public boolean sameUnderlyingData(DataBuffer buffer)
```
    Description copied from interface: DataBuffer
    
    Returns true if the underlying data source is the same for both buffers (referential equals)
    
    Specified by:
    
    sameUnderlyingData in interface DataBuffer
    
    Parameters:
    
    buffer - whether the buffer is the same underlying data or not
    
    Returns:
    
    true if both data buffers have the same underlying data SOURCE
  - wrappedBuffer
```
protected ByteBuffer wrappedBuffer()
```
  - asNioInt
```
public IntBuffer asNioInt()
```
    Description copied from interface: DataBuffer
    
    Returns a view of this as an nio byte buffer
    
    Specified by:
    
    asNioInt in interface DataBuffer
    
    Returns:
    
    a view of this as an nio int buffer
  - asNioLong
```
public LongBuffer asNioLong()
```
    Specified by:
    
    asNioLong in interface DataBuffer
  - asNioDouble
```
public DoubleBuffer asNioDouble()
```
    Description copied from interface: DataBuffer
    
    Returns a view of this as an nio byte buffer
    
    Specified by:
    
    asNioDouble in interface DataBuffer
    
    Returns:
    
    a view of this as an nio double buffer
  - asNioFloat
```
public FloatBuffer asNioFloat()
```
    Description copied from interface: DataBuffer
    
    Returns a view of this as an nio byte buffer
    
    Specified by:
    
    asNioFloat in interface DataBuffer
    
    Returns:
    
    a view of this as an nio float buffer
  - asNio
```
public ByteBuffer asNio()
```
    Description copied from interface: DataBuffer
    
    Returns a view of this as an nio byte buffer
    
    Specified by:
    
    asNio in interface DataBuffer
    
    Returns:
    
    a view of this as an nio byte buffer
  - assign
```
public void assign(Number value,
                   long offset)
```
    Description copied from interface: DataBuffer
    
    Assign the given value to the buffer starting at offset
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    value - assign the value to set
    
    offset - the offset to start at
  - write
```
public void write(OutputStream dos)
```
    Description copied from interface: DataBuffer
    
    Write this buffer to the output stream
    
    Specified by:
    
    write in interface DataBuffer
    
    Parameters:
    
    dos - the output stream to write
  - read
```
public void read(InputStream is,
                 DataBuffer.AllocationMode allocationMode,
                 long length,
                 DataType dataType)
```
    Description copied from interface: DataBuffer
    
    Write this buffer to the input stream.
    
    Specified by:
    
    read in interface DataBuffer
    
    Parameters:
    
    is - the inpus tream to write to
  - flush
```
public void flush()
```
    Description copied from interface: DataBuffer
    
    Flush the data buffer
    
    Specified by:
    
    flush in interface DataBuffer
  - assign
```
public void assign(long[] offsets,
                   long[] strides,
                   long n,
                   DataBuffer... buffers)
```
    Description copied from interface: DataBuffer
    
    Assign the given buffers to this buffer based on the given offsets and strides. Note that the offsets and strides must be of equal length to the number of buffers
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    offsets - the offsets to use
    
    strides - the strides to use
    
    n - the number of elements to operate on
    
    buffers - the buffers to assign data from
  - assign
```
public void assign(DataBuffer... buffers)
```
    Description copied from interface: DataBuffer
    
    Assign the given data buffers to this buffer
    
    Specified by:
    
    assign in interface DataBuffer
    
    Parameters:
    
    buffers - the buffers to assign
  - destroy
```
public void destroy()
```
    Description copied from interface: DataBuffer
    
    release all resources for this buffer
    
    Specified by:
    
    destroy in interface DataBuffer
  - dataType
```
public DataType dataType()
```
    The data opType of the buffer
    
    Specified by:
    
    dataType in interface DataBuffer
    
    Returns:
    
    the data opType of the buffer
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - doReadObject
```
protected void doReadObject(ObjectInputStream s)
```
  - readHeader
```
public static Triple<DataBuffer.AllocationMode,Long,DataType> readHeader(@NonNull
                                                                                     @NonNull InputStream is)
```
  - read
```
public void read(DataInputStream s,
                 @NonNull
                 @NonNull DataBuffer.AllocationMode allocMode,
                 long len,
                 @NonNull
                 @NonNull DataType dtype)
```
    Specified by:
    
    read in interface DataBuffer
  - readContent
```
protected void readContent(DataInputStream s,
                           DataType sourceType,
                           DataType thisType)
```
  - getDoubleUnsynced
```
protected abstract double getDoubleUnsynced(long index)
```
  - getFloatUnsynced
```
protected abstract float getFloatUnsynced(long index)
```
  - getLongUnsynced
```
protected abstract long getLongUnsynced(long index)
```
  - getIntUnsynced
```
protected abstract int getIntUnsynced(long index)
```
  - write
```
public void write(DataOutputStream out)
           throws IOException
```
    Specified by:
    
    write in interface DataBuffer
    
    Throws:
    
    IOException
  - toFloat
```
public float toFloat(int hbits)
```
  - array
```
public Object array()
```
    Description copied from interface: DataBuffer
    
    Returns the backing array of this buffer (if there is one)
    
    Specified by:
    
    array in interface DataBuffer
    
    Returns:
    
    the backing array of this buffer
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - originalOffset
```
public long originalOffset()
```
    Returns the offset of the buffer relative to originalDataBuffer
    
    Specified by:
    
    originalOffset in interface DataBuffer
    
    Returns:
  - isConstant
```
public boolean isConstant()
```
    This method returns whether this DataBuffer is constant, or not. Constant buffer means that it modified only during creation time, and then it stays the same for all lifecycle. I.e. used in shape info databuffers.
    
    Specified by:
    
    isConstant in interface DataBuffer
    
    Returns:
  - setConstant
```
public void setConstant(boolean reallyConstant)
```
    This method allows you to mark databuffer as constant. PLEASE NOTE: DO NOT USE THIS METHOD, UNLESS YOU'RE 100% SURE WHAT YOU DO
    
    Specified by:
    
    setConstant in interface DataBuffer
    
    Parameters:
    
    reallyConstant -
  - isAttached
```
public boolean isAttached()
```
    This method returns True, if this DataBuffer is attached to some workspace. False otherwise
    
    Specified by:
    
    isAttached in interface DataBuffer
    
    Returns:
  - isInScope
```
public boolean isInScope()
```
    This method checks, if given attached INDArray is still in scope of its parent Workspace
    PLEASE NOTE: if this INDArray isn't attached to any Workspace, this method will return true
    
    Specified by:
    
    isInScope in interface DataBuffer
    
    Returns:
  - getParentWorkspace
```
public MemoryWorkspace getParentWorkspace()
```
    Description copied from interface: DataBuffer
    
    This method returns Workspace this DataBuffer is attached to
    
    Specified by:
    
    getParentWorkspace in interface DataBuffer
    
    Returns:
  - reallocate
```
public abstract DataBuffer reallocate(long length)
```
    Description copied from interface: DataBuffer
    
    Reallocate the native memory of the buffer
    
    Specified by:
    
    reallocate in interface DataBuffer
    
    Parameters:
    
    length - the new length of the buffer
    
    Returns:
    
    this databuffer
  - capacity
```
public long capacity()
```
    Specified by:
    
    capacity in interface DataBuffer
    
    Returns:
    
    the capacity of the buffer
  - closeable
```
public boolean closeable()
```
    Description copied from interface: DataBuffer
    
    This method checks, if this DataBuffer instalce can use close() method
    
    Specified by:
    
    closeable in interface DataBuffer
    
    Returns:
    
    true if DataBuffer can be released, false otherwise
  - markReleased
```
protected void markReleased()
```
  - close
```
public void close()
```
    Description copied from interface: DataBuffer
    
    This method releases exclusive off-heap resources uses by this DataBuffer instance. If DataBuffer relies on shared resources, exception will be thrown instead PLEASE NOTE: This method is NOT safe by any means
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface DataBuffer
  - release
```
protected void release()
```
  - platformAddress
```
public long platformAddress()
```
    Description copied from interface: DataBuffer
    
    Returns the address of platform-specific pointer: - for native backend that'll be host pointer - for cuda backend that'll be device pointer
    
    Specified by:
    
    platformAddress in interface DataBuffer
    
    Returns:
  - wasClosed
```
public boolean wasClosed()
```
    Description copied from interface: DataBuffer
    
    This method checks if array or its buffer was closed before
    
    Specified by:
    
    wasClosed in interface DataBuffer
    
    Returns:
    
    true if was closed, false otherwise
  - syncToPrimary
```
public abstract void syncToPrimary()
```
    This method synchronizes host memory
  - syncToSpecial
```
public abstract void syncToSpecial()
```
    This method synchronizes device memory

Class BaseDataBuffer

Nested Class Summary

Nested classes/interfaces inherited from interface org.nd4j.linalg.api.buffer.DataBuffer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TO_STRING_MAX_ELEMENTS

type

length

underlyingLength

offset

elementSize

wrappedDataBuffer

workspaceGenerationId

allocationMode

indexer

pointer

attached

parentWorkspace

originalBuffer

originalOffset

constant

released

referenced

Constructor Detail

BaseDataBuffer

BaseDataBuffer

BaseDataBuffer

Method Detail

initTypeAndSize

getElementSize

getGenerationId

setIndexer

pickReferent

originalDataBuffer

setNioBuffer

indexer

pointer

underlyingDataBuffer

offset

allocationMode

persist

isPersist

unPersist

fillPointerWithZero

copyAtStride

removeReferencing

references

addressPointer

address

addReferencing

assign

setData

setData

setData

setData

setData

setData

setData

assign

assign

assign

assign

underlyingLength

length

assign

getDoublesAt

getDoublesAt

getFloatsAt

getFloatsAt

getLongsAt

getLongsAt

getIntsAt

getIntsAt

dup

create

create

create