edu.sdsc.inca.protocol
Class ProtocolReader
java.lang.Object
java.io.Reader
java.io.BufferedReader
edu.sdsc.inca.protocol.ProtocolReader
- All Implemented Interfaces:
- java.io.Closeable, java.lang.Readable
public class ProtocolReader
- extends java.io.BufferedReader
- Author:
- Cathie Olschanowsky, Jim Hayes
Used for efficiently handling the input streams that hold inca
protocol bytes.
To use it
reader = new ProtocolReader(new InputStreamReader(inputStream));
reader.peekCommand
reader.getStatement ...
Fields inherited from class java.io.Reader |
lock |
Constructor Summary |
ProtocolReader(java.io.Reader reader)
Create a buffering protocol-input stream that uses a default-sized
input buffer. |
ProtocolReader(java.io.Reader reader,
int i)
Create a buffering character-input stream that uses an input
buffer of the specified size. |
Method Summary |
void |
close()
Closes the reader. |
boolean |
isClosed()
Indicates whether or not the reader has been closed. |
java.lang.String |
peekCommand()
Returns the next command from the stream, or null on end. |
Statement |
readStatement()
Reads a complete statement from the input stream, or null if the stream
has been closed. |
Methods inherited from class java.io.BufferedReader |
mark, markSupported, read, read, readLine, ready, reset, skip |
Methods inherited from class java.io.Reader |
read, read |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
MAX_COMMAND_LENGTH
public static final int MAX_COMMAND_LENGTH
- See Also:
- Constant Field Values
CR
public static final int CR
- See Also:
- Constant Field Values
LF
public static final int LF
- See Also:
- Constant Field Values
SP
public static final int SP
- See Also:
- Constant Field Values
logger
protected static org.apache.log4j.Logger logger
closed
protected boolean closed
ProtocolReader
public ProtocolReader(java.io.Reader reader,
int i)
- Create a buffering character-input stream that uses an input
buffer of the specified size.
- Parameters:
reader
- the reader that the data can be read fromi
- size of the input buffer
ProtocolReader
public ProtocolReader(java.io.Reader reader)
- Create a buffering protocol-input stream that uses a default-sized
input buffer.
- Parameters:
reader
- the reader that the protocol can be read from
close
public void close()
throws java.io.IOException
- Closes the reader.
- Specified by:
close
in interface java.io.Closeable
- Overrides:
close
in class java.io.BufferedReader
- Throws:
java.io.IOException
- on a close error
isClosed
public boolean isClosed()
- Indicates whether or not the reader has been closed.
- Returns:
- true if the reader is closed, else false
peekCommand
public java.lang.String peekCommand()
throws java.io.IOException,
ProtocolException
- Returns the next command from the stream, or null on end. The command
will be re-read by the next call to readStatement.
- Returns:
- the next command
- Throws:
java.io.IOException
- on a read error
ProtocolException
- if the contents of the read are malformed
readStatement
public Statement readStatement()
throws java.io.IOException,
ProtocolException
- Reads a complete statement from the input stream, or null if the stream
has been closed.
- Returns:
- the next statement -- complete
- Throws:
java.io.IOException
- on a read error
ProtocolException
- if the contents of the read are malformed