Package org.jgroups.protocols
Class SMACK.SmackHeader
- java.lang.Object
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- org.jgroups.Header
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- org.jgroups.protocols.SMACK.SmackHeader
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- All Implemented Interfaces:
java.io.Externalizable
,java.io.Serializable
,Streamable
- Enclosing class:
- SMACK
public static class SMACK.SmackHeader extends Header implements Streamable
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description static byte
ACK
static byte
JOIN_ANNOUNCEMENT
static byte
LEAVE_ANNOUNCEMENT
static byte
MCAST
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Fields inherited from class org.jgroups.Header
HDR_OVERHEAD
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Constructor Summary
Constructors Constructor Description SmackHeader()
SmackHeader(byte type, long seqno)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
readExternal(java.io.ObjectInput in)
void
readFrom(java.io.DataInputStream in)
Read the state of the current object (including superclasses) from instream Note that the input stream must not be closedint
size()
To be implemented by subclasses.java.lang.String
toString()
void
writeExternal(java.io.ObjectOutput out)
void
writeTo(java.io.DataOutputStream out)
Write the entire state of the current object (including superclasses) to outstream.
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Field Detail
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MCAST
public static final byte MCAST
- See Also:
- Constant Field Values
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ACK
public static final byte ACK
- See Also:
- Constant Field Values
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JOIN_ANNOUNCEMENT
public static final byte JOIN_ANNOUNCEMENT
- See Also:
- Constant Field Values
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LEAVE_ANNOUNCEMENT
public static final byte LEAVE_ANNOUNCEMENT
- See Also:
- Constant Field Values
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Method Detail
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writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
- Specified by:
writeExternal
in interfacejava.io.Externalizable
- Throws:
java.io.IOException
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readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
- Specified by:
readExternal
in interfacejava.io.Externalizable
- Throws:
java.io.IOException
java.lang.ClassNotFoundException
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size
public int size()
Description copied from class:Header
To be implemented by subclasses. Return the size of this object for the serialized version of it. I.e. how many bytes this object takes when flattened into a buffer. This may be different for each instance, or can be the same. This may also just be an estimation. E.g. FRAG uses it on Message to determine whether or not to fragment the message. Fragmentation itself will be accurate, because the entire message will actually be serialized into a byte buffer, so we can determine the exact size.
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writeTo
public void writeTo(java.io.DataOutputStream out) throws java.io.IOException
Description copied from interface:Streamable
Write the entire state of the current object (including superclasses) to outstream. Note that the output stream must not be closed- Specified by:
writeTo
in interfaceStreamable
- Throws:
java.io.IOException
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readFrom
public void readFrom(java.io.DataInputStream in) throws java.io.IOException, java.lang.IllegalAccessException, java.lang.InstantiationException
Description copied from interface:Streamable
Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed- Specified by:
readFrom
in interfaceStreamable
- Throws:
java.io.IOException
java.lang.IllegalAccessException
java.lang.InstantiationException
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