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java.lang.Objectjava.io.OutputStream
java.io.FilterOutputStream
org.apache.hadoop.io.OutputBuffer
public class OutputBuffer
A reusable OutputStream implementation that writes to an in-memory
buffer.
This saves memory over creating a new OutputStream and ByteArrayOutputStream each time data is written.
Typical usage is something like the following:
OutputBuffer buffer = new OutputBuffer();
while (... loop condition ...) {
buffer.reset();
... write buffer using OutputStream methods ...
byte[] data = buffer.getData();
int dataLength = buffer.getLength();
... write data to its ultimate destination ...
}
DataOutputBuffer,
InputBuffer| Field Summary |
|---|
| Fields inherited from class java.io.FilterOutputStream |
|---|
out |
| Constructor Summary | |
|---|---|
OutputBuffer()
Constructs a new empty buffer. |
|
| Method Summary | |
|---|---|
byte[] |
getData()
Returns the current contents of the buffer. |
int |
getLength()
Returns the length of the valid data currently in the buffer. |
OutputBuffer |
reset()
Resets the buffer to empty. |
void |
write(InputStream in,
int length)
Writes bytes from a InputStream directly into the buffer. |
| Methods inherited from class java.io.FilterOutputStream |
|---|
close, flush, write, write, write |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public OutputBuffer()
| Method Detail |
|---|
public byte[] getData()
getLength().
public int getLength()
public OutputBuffer reset()
public void write(InputStream in,
int length)
throws IOException
IOException
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