Package org.apache.qpid.protonj2.buffer
Class ProtonSlicedBuffer
- java.lang.Object
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- org.apache.qpid.protonj2.buffer.ProtonAbstractBuffer
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- org.apache.qpid.protonj2.buffer.ProtonSlicedBuffer
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- All Implemented Interfaces:
java.lang.Comparable<ProtonBuffer>
,ProtonBuffer
public class ProtonSlicedBuffer extends ProtonAbstractBuffer
Presents a sliced view of aProtonAbstractBuffer
. The slice wraps the target buffer with a given offset into that buffer and a capped max capacity that limits how far into the wrapped buffer the slice will read or write. A sliced buffer does not allow capacity changes and as such any call to alter the capacity will result in anUnsupportedOperationException
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Field Summary
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Fields inherited from class org.apache.qpid.protonj2.buffer.ProtonAbstractBuffer
markedReadIndex, markedWriteIndex, readIndex, writeIndex
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Constructor Summary
Constructors Modifier Constructor Description protected
ProtonSlicedBuffer(ProtonAbstractBuffer buffer, int offset, int capacity)
Creates a sliced view of the givenProtonByteBuffer
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
capacity()
ProtonBuffer
capacity(int newCapacity)
Adjusts the capacity of this buffer.ProtonBuffer
copy(int index, int length)
Returns a copy of this buffer's sub-region.ProtonBuffer
duplicate()
Create a duplicate of this ProtonBuffer instance that shares the same backing data store and but maintains separate position index values.byte[]
getArray()
Returns the backing array for this ProtonBuffer instance if there is such an array or throws an exception if this ProtonBuffer implementation has no backing array.int
getArrayOffset()
boolean
getBoolean(int index)
Gets a boolean from the specified index, this method will not modify the read or write index.byte
getByte(int index)
Gets a byte from the specified index, this method will not modify the read or write index.ProtonBuffer
getBytes(int index, byte[] dst)
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
.ProtonBuffer
getBytes(int index, byte[] dst, int offset, int length)
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
.ProtonBuffer
getBytes(int index, java.nio.ByteBuffer destination)
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
until the destination's position reaches its limit.ProtonBuffer
getBytes(int index, ProtonBuffer dst)
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
until the destination becomes non-writable.ProtonBuffer
getBytes(int index, ProtonBuffer dst, int length)
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
.ProtonBuffer
getBytes(int index, ProtonBuffer dst, int dstIndex, int length)
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
.char
getChar(int index)
Gets a 2-byte char from the specified index, this method will not modify the read or write index.double
getDouble(int index)
Gets a double from the specified index, this method will not modify the read or write index.float
getFloat(int index)
Gets a float from the specified index, this method will not modify the read or write index.int
getInt(int index)
Gets a int from the specified index, this method will not modify the read or write index.long
getLong(int index)
Gets a long from the specified index, this method will not modify the read or write index.short
getShort(int index)
Gets a short from the specified index, this method will not modify the read or write index.short
getUnsignedByte(int index)
Gets a unsigned byte from the specified index, this method will not modify the read or write index.long
getUnsignedInt(int index)
Gets a unsigned int from the specified index, this method will not modify the read or write index.int
getUnsignedShort(int index)
Gets a unsigned short from the specified index, this method will not modify the read or write index.boolean
hasArray()
ProtonBuffer
setBoolean(int index, boolean value)
Sets the boolean value at the given write index in this buffer's backing data store.ProtonBuffer
setByte(int index, int value)
Sets the byte value at the given write index in this buffer's backing data store.ProtonBuffer
setBytes(int index, byte[] source)
Transfers the specified source array's data to this buffer starting at the specified absoluteindex
.ProtonBuffer
setBytes(int index, byte[] src, int srcIndex, int length)
Transfers the specified source array's data to this buffer starting at the specified absoluteindex
.ProtonBuffer
setBytes(int index, java.nio.ByteBuffer source)
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
until the source buffer's position reaches its limit.ProtonBuffer
setBytes(int index, ProtonBuffer source)
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
until the source buffer becomes unreadable.ProtonBuffer
setBytes(int index, ProtonBuffer source, int length)
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
.ProtonBuffer
setBytes(int index, ProtonBuffer source, int sourceIndex, int length)
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
.ProtonBuffer
setChar(int index, int value)
Sets the char value at the given write index in this buffer's backing data store.ProtonBuffer
setDouble(int index, double value)
Sets the double value at the given write index in this buffer's backing data store.ProtonBuffer
setFloat(int index, float value)
Sets the float value at the given write index in this buffer's backing data store.ProtonBuffer
setInt(int index, int value)
Sets the int value at the given write index in this buffer's backing data store.ProtonBuffer
setLong(int index, long value)
Sets the long value at the given write index in this buffer's backing data store.ProtonBuffer
setShort(int index, int value)
Sets the short value at the given write index in this buffer's backing data store.ProtonBuffer
slice(int index, int length)
Create a new ProtonBuffer whose contents are a subsequence of the contents of thisProtonBuffer
.java.nio.ByteBuffer
toByteBuffer(int index, int length)
Returns a ByteBuffer that represents the given span of bytes from the readable portion of this buffer.-
Methods inherited from class org.apache.qpid.protonj2.buffer.ProtonAbstractBuffer
adjustIndexMarks, checkDestinationIndex, checkIndex, checkNewCapacity, checkReadableBytes, checkSourceIndex, clear, compareTo, copy, ensureWritable, equals, getMaxWritableBytes, getReadableBytes, getReadIndex, getWritableBytes, getWriteIndex, hashCode, isOutOfBounds, isReadable, isReadable, isWritable, isWritable, markReadIndex, markWriteIndex, maxCapacity, readBoolean, readByte, readBytes, readBytes, readBytes, readBytes, readBytes, readBytes, readBytes, readDouble, readFloat, readInt, readLong, readShort, resetReadIndex, resetWriteIndex, setIndex, setReadIndex, setWriteIndex, skipBytes, slice, toByteBuffer, toString, toString, writeBoolean, writeByte, writeBytes, writeBytes, writeBytes, writeBytes, writeBytes, writeBytes, writeBytes, writeDouble, writeFloat, writeInt, writeLong, writeShort
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.apache.qpid.protonj2.buffer.ProtonBuffer
unwrap
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Constructor Detail
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ProtonSlicedBuffer
protected ProtonSlicedBuffer(ProtonAbstractBuffer buffer, int offset, int capacity)
Creates a sliced view of the givenProtonByteBuffer
.- Parameters:
buffer
- The buffer that this slice is a view of.offset
- The offset into the buffer where this view starts.capacity
- The amount of the buffer that this view spans.
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Method Detail
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hasArray
public boolean hasArray()
- Returns:
- true if this buffer has a backing byte array that can be accessed.
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getArray
public byte[] getArray()
Description copied from interface:ProtonBuffer
Returns the backing array for this ProtonBuffer instance if there is such an array or throws an exception if this ProtonBuffer implementation has no backing array.Changes to the returned array are visible to other users of this ProtonBuffer.
- Returns:
- the backing byte array for this ProtonBuffer.
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getArrayOffset
public int getArrayOffset()
- Returns:
- the offset of the first byte in the backing array belonging to this buffer.
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capacity
public int capacity()
- Returns:
- the number of bytes this buffer can currently contain.
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capacity
public ProtonBuffer capacity(int newCapacity)
Description copied from interface:ProtonBuffer
Adjusts the capacity of this buffer. If the new capacity is less than the current capacity, the content of this buffer is truncated. If the new capacity is greater than the current capacity, the buffer is appended with unspecified data whose length is new capacity - current capacity.- Parameters:
newCapacity
- the new maximum capacity value of this buffer.- Returns:
- this buffer for using in call chaining.
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duplicate
public ProtonBuffer duplicate()
Description copied from interface:ProtonBuffer
Create a duplicate of this ProtonBuffer instance that shares the same backing data store and but maintains separate position index values. Changes to one buffer are visible in any of its duplicates. This method does not copy the read or write markers to the new buffer instance.- Specified by:
duplicate
in interfaceProtonBuffer
- Overrides:
duplicate
in classProtonAbstractBuffer
- Returns:
- a new ProtonBuffer instance that shares the backing data as this one.
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slice
public ProtonBuffer slice(int index, int length)
Description copied from interface:ProtonBuffer
Create a new ProtonBuffer whose contents are a subsequence of the contents of thisProtonBuffer
.The starting point of the new buffer starts at given index into this buffer and spans the number of bytes given by the length. Changes to the contents of this buffer or to the produced slice buffer are visible in the other.
- Specified by:
slice
in interfaceProtonBuffer
- Overrides:
slice
in classProtonAbstractBuffer
- Parameters:
index
- The index in this buffer where the slice should begin.length
- The number of bytes to make visible to the new buffer from this one.- Returns:
- a new
ProtonBuffer
whose contents are a subsequence of this buffer.
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copy
public ProtonBuffer copy(int index, int length)
Description copied from interface:ProtonBuffer
Returns a copy of this buffer's sub-region. Modifying the content of the returned buffer or this buffer does not affect each other at all. This method does not modify the value returned fromProtonBuffer.getReadIndex()
orProtonBuffer.getWriteIndex()
of this buffer.- Specified by:
copy
in interfaceProtonBuffer
- Specified by:
copy
in classProtonAbstractBuffer
- Parameters:
index
- The index in this buffer where the copy should beginlength
- The number of bytes to copy to the new buffer from this one.- Returns:
- a new ProtonBuffer instance containing the copied bytes.
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toByteBuffer
public java.nio.ByteBuffer toByteBuffer(int index, int length)
Description copied from interface:ProtonBuffer
Returns a ByteBuffer that represents the given span of bytes from the readable portion of this buffer.This method should attempt to return a ByteBuffer that shares the backing data store with this buffer however if that is not possible it is permitted that the returned ByteBuffer contain a copy of the readable bytes of this ProtonBuffer.
- Specified by:
toByteBuffer
in interfaceProtonBuffer
- Specified by:
toByteBuffer
in classProtonAbstractBuffer
- Parameters:
index
- The starting index in this where the ByteBuffer view should begin.length
- The number of bytes to include in the ByteBuffer view.- Returns:
- a ByteBuffer that represents the given view of this buffers readable bytes.
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getBoolean
public boolean getBoolean(int index)
Description copied from interface:ProtonBuffer
Gets a boolean from the specified index, this method will not modify the read or write index.- Specified by:
getBoolean
in interfaceProtonBuffer
- Overrides:
getBoolean
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getByte
public byte getByte(int index)
Description copied from interface:ProtonBuffer
Gets a byte from the specified index, this method will not modify the read or write index.- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getUnsignedByte
public short getUnsignedByte(int index)
Description copied from interface:ProtonBuffer
Gets a unsigned byte from the specified index, this method will not modify the read or write index.- Specified by:
getUnsignedByte
in interfaceProtonBuffer
- Overrides:
getUnsignedByte
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getChar
public char getChar(int index)
Description copied from interface:ProtonBuffer
Gets a 2-byte char from the specified index, this method will not modify the read or write index.- Specified by:
getChar
in interfaceProtonBuffer
- Overrides:
getChar
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getShort
public short getShort(int index)
Description copied from interface:ProtonBuffer
Gets a short from the specified index, this method will not modify the read or write index.- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getUnsignedShort
public int getUnsignedShort(int index)
Description copied from interface:ProtonBuffer
Gets a unsigned short from the specified index, this method will not modify the read or write index.- Specified by:
getUnsignedShort
in interfaceProtonBuffer
- Overrides:
getUnsignedShort
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getInt
public int getInt(int index)
Description copied from interface:ProtonBuffer
Gets a int from the specified index, this method will not modify the read or write index.- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getUnsignedInt
public long getUnsignedInt(int index)
Description copied from interface:ProtonBuffer
Gets a unsigned int from the specified index, this method will not modify the read or write index.- Specified by:
getUnsignedInt
in interfaceProtonBuffer
- Overrides:
getUnsignedInt
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getLong
public long getLong(int index)
Description copied from interface:ProtonBuffer
Gets a long from the specified index, this method will not modify the read or write index.- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getFloat
public float getFloat(int index)
Description copied from interface:ProtonBuffer
Gets a float from the specified index, this method will not modify the read or write index.- Specified by:
getFloat
in interfaceProtonBuffer
- Overrides:
getFloat
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getDouble
public double getDouble(int index)
Description copied from interface:ProtonBuffer
Gets a double from the specified index, this method will not modify the read or write index.- Specified by:
getDouble
in interfaceProtonBuffer
- Overrides:
getDouble
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.- Returns:
- the value read from the given index.
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getBytes
public ProtonBuffer getBytes(int index, ProtonBuffer dst)
Description copied from interface:ProtonBuffer
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
until the destination becomes non-writable. This method is basically same withProtonBuffer.getBytes(int, ProtonBuffer, int, int)
, except that this method increases thewriteIndex
of the destination by the number of the transferred bytes whileProtonBuffer.getBytes(int, ProtonBuffer, int, int)
does not. This method does not modifyreadIndex
orwriteIndex
of the source buffer (i.e.this
).- Specified by:
getBytes
in interfaceProtonBuffer
- Overrides:
getBytes
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.dst
- the destination buffer for the bytes to be read- Returns:
- this buffer for chaining
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getBytes
public ProtonBuffer getBytes(int index, ProtonBuffer dst, int length)
Description copied from interface:ProtonBuffer
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
. This method is basically same withProtonBuffer.getBytes(int, ProtonBuffer, int, int)
, except that this method increases thewriteIndex
of the destination by the number of the transferred bytes whileProtonBuffer.getBytes(int, ProtonBuffer, int, int)
does not. This method does not modifyreadIndex
orwriteIndex
of the source buffer (i.e.this
).- Specified by:
getBytes
in interfaceProtonBuffer
- Overrides:
getBytes
in classProtonAbstractBuffer
- Parameters:
index
- the index in the buffer to start the read fromdst
- the destination buffer for the bytes to be readlength
- the number of bytes to transfer- Returns:
- this buffer for chaining
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getBytes
public ProtonBuffer getBytes(int index, ProtonBuffer dst, int dstIndex, int length)
Description copied from interface:ProtonBuffer
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
. This method does not modifyreadIndex
orwriteIndex
of both the source (i.e.this
) and the destination.- Parameters:
index
- The index into the buffer where the value should be read.dst
- The buffer where the bytes read will be written todstIndex
- The offset into the destination where the write startslength
- The number of bytes to transfer- Returns:
- this buffer for chaining
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getBytes
public ProtonBuffer getBytes(int index, byte[] dst)
Description copied from interface:ProtonBuffer
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
. This method does not modifyreadIndex
orwriteIndex
of this buffer- Specified by:
getBytes
in interfaceProtonBuffer
- Overrides:
getBytes
in classProtonAbstractBuffer
- Parameters:
index
- The index into the buffer where the value should be read.dst
- The buffer where the bytes read will be written to- Returns:
- this buffer for chaining
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getBytes
public ProtonBuffer getBytes(int index, byte[] dst, int offset, int length)
Description copied from interface:ProtonBuffer
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
. This method does not modify#getReadIndex()
or#getWriteIndex()
of this buffer.- Parameters:
index
- The index into the buffer where the value should be read.dst
- The buffer where the bytes read will be written tooffset
- the offset into the destination to begin writing the bytes.length
- the number of bytes to transfer from this buffer to the target buffer.- Returns:
- this buffer for chaining
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getBytes
public ProtonBuffer getBytes(int index, java.nio.ByteBuffer destination)
Description copied from interface:ProtonBuffer
Transfers this buffer's data to the specified destination starting at the specified absoluteindex
until the destination's position reaches its limit. This method does not modify#getReadIndex()
or#getWriteIndex()
of this buffer while the destination'sposition
will be increased.- Parameters:
index
- The index into the buffer where the value should be read.destination
- The buffer where the bytes read will be written to- Returns:
- this buffer for chaining
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setByte
public ProtonBuffer setByte(int index, int value)
Description copied from interface:ProtonBuffer
Sets the byte value at the given write index in this buffer's backing data store.- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setBoolean
public ProtonBuffer setBoolean(int index, boolean value)
Description copied from interface:ProtonBuffer
Sets the boolean value at the given write index in this buffer's backing data store.- Specified by:
setBoolean
in interfaceProtonBuffer
- Overrides:
setBoolean
in classProtonAbstractBuffer
- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setChar
public ProtonBuffer setChar(int index, int value)
Description copied from interface:ProtonBuffer
Sets the char value at the given write index in this buffer's backing data store.- Specified by:
setChar
in interfaceProtonBuffer
- Overrides:
setChar
in classProtonAbstractBuffer
- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setShort
public ProtonBuffer setShort(int index, int value)
Description copied from interface:ProtonBuffer
Sets the short value at the given write index in this buffer's backing data store.- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setInt
public ProtonBuffer setInt(int index, int value)
Description copied from interface:ProtonBuffer
Sets the int value at the given write index in this buffer's backing data store.- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setLong
public ProtonBuffer setLong(int index, long value)
Description copied from interface:ProtonBuffer
Sets the long value at the given write index in this buffer's backing data store.- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setFloat
public ProtonBuffer setFloat(int index, float value)
Description copied from interface:ProtonBuffer
Sets the float value at the given write index in this buffer's backing data store.- Specified by:
setFloat
in interfaceProtonBuffer
- Overrides:
setFloat
in classProtonAbstractBuffer
- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setDouble
public ProtonBuffer setDouble(int index, double value)
Description copied from interface:ProtonBuffer
Sets the double value at the given write index in this buffer's backing data store.- Specified by:
setDouble
in interfaceProtonBuffer
- Overrides:
setDouble
in classProtonAbstractBuffer
- Parameters:
index
- The index to start the write from.value
- The value to write at the given index.- Returns:
- a reference to this ProtonBuffer for chaining.
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setBytes
public ProtonBuffer setBytes(int index, ProtonBuffer source)
Description copied from interface:ProtonBuffer
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
until the source buffer becomes unreadable. This method is basically same withProtonBuffer.setBytes(int, ProtonBuffer, int, int)
, except that this method increases thereadIndex
of the source buffer by the number of the transferred bytes whileProtonBuffer.setBytes(int, ProtonBuffer, int, int)
does not. This method does not modifyreadIndex
orwriteIndex
of the source buffer (i.e.this
).- Specified by:
setBytes
in interfaceProtonBuffer
- Overrides:
setBytes
in classProtonAbstractBuffer
- Parameters:
index
- The index in this buffer where the write operation starts.source
- The source buffer from which the bytes are read.- Returns:
- this buffer for chaining
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setBytes
public ProtonBuffer setBytes(int index, ProtonBuffer source, int length)
Description copied from interface:ProtonBuffer
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
. This method is basically same withProtonBuffer.setBytes(int, ProtonBuffer, int, int)
, except that this method increases thereadIndex
of the source buffer by the number of the transferred bytes whileProtonBuffer.setBytes(int, ProtonBuffer, int, int)
does not. This method does not modifyreadIndex
orwriteIndex
of the source buffer (i.e.this
).- Specified by:
setBytes
in interfaceProtonBuffer
- Overrides:
setBytes
in classProtonAbstractBuffer
- Parameters:
index
- The index in this buffer where the write operation starts.source
- The source buffer from which the bytes are read.length
- The number of bytes to transfer- Returns:
- this buffer for chaining
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setBytes
public ProtonBuffer setBytes(int index, ProtonBuffer source, int sourceIndex, int length)
Description copied from interface:ProtonBuffer
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
. This method does not modifyreadIndex
orwriteIndex
of both the source (i.e.this
) and the destination.- Parameters:
index
- The index in this buffer where the write operation starts.source
- The source buffer from which the bytes are read.sourceIndex
- The offset into the source where the set begins.length
- The number of bytes to transfer- Returns:
- this buffer for chaining
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setBytes
public ProtonBuffer setBytes(int index, byte[] source)
Description copied from interface:ProtonBuffer
Transfers the specified source array's data to this buffer starting at the specified absoluteindex
. This method does not modifyreadIndex
orwriteIndex
of this buffer.- Specified by:
setBytes
in interfaceProtonBuffer
- Overrides:
setBytes
in classProtonAbstractBuffer
- Parameters:
index
- The index in this buffer where the write operation starts.source
- The source buffer from which the bytes are read.- Returns:
- this buffer for chaining
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setBytes
public ProtonBuffer setBytes(int index, byte[] src, int srcIndex, int length)
Description copied from interface:ProtonBuffer
Transfers the specified source array's data to this buffer starting at the specified absoluteindex
. This method does not modifyreadIndex
orwriteIndex
of this buffer.- Parameters:
index
- The index in this buffer where the write operation starts.src
- The source buffer from which the bytes are read.srcIndex
- The offset into the source where the set begins.length
- The number of bytes to transfer- Returns:
- this buffer for chaining
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setBytes
public ProtonBuffer setBytes(int index, java.nio.ByteBuffer source)
Description copied from interface:ProtonBuffer
Transfers the specified source buffer's data to this buffer starting at the specified absoluteindex
until the source buffer's position reaches its limit. This method does not modifyreadIndex
orwriteIndex
of this buffer.- Parameters:
index
- The index in this buffer where the write operation starts.source
- The source buffer from which the bytes are read.- Returns:
- this buffer for chaining
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