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java.lang.Objectuk.ac.starlink.table.storage.LimitByteStore
public class LimitByteStore
ByteStore wrapper class which will throw an IOException during writing if an attempt is made to store more than a fixed number of bytes.
Constructor Summary | |
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LimitByteStore(ByteStore base,
long limit)
Constructor. |
Method Summary | |
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void |
close()
Tidies up. |
void |
copy(java.io.OutputStream out)
Takes all the data written so far into this store's sink stream and copies it to a destination stream. |
long |
getLength()
Returns the number of bytes currently stored in this object. |
java.io.OutputStream |
getOutputStream()
Returns an output stream which can be used to write to the store. |
java.nio.ByteBuffer[] |
toByteBuffers()
Returns an array of byte buffers containing the bytes written to this store. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public LimitByteStore(ByteStore base, long limit)
base
- base byte storelimit
- maximum capacity of this store in bytesMethod Detail |
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public java.io.OutputStream getOutputStream()
ByteStore
BufferedOutputStream
for efficiency if required.
getOutputStream
in interface ByteStore
public long getLength()
ByteStore
getLength
in interface ByteStore
public void copy(java.io.OutputStream out) throws java.io.IOException
ByteStore
copy
in interface ByteStore
out
- data destination stream
java.io.IOException
public java.nio.ByteBuffer[] toByteBuffers() throws java.io.IOException
ByteStore
Integer.MAX_VALUE
, more than one will be
required. The limit of each buffer indicates the
number of bytes it contains.
Usual usage will be to write all data, then call this method once; this model may affect implementation decisions about efficiency.
toByteBuffers
in interface ByteStore
java.io.IOException
- if there is an I/O errorpublic void close()
ByteStore
close
in interface ByteStore
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