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java.lang.Objectorg.jgroups.util.Headers
public class Headers
Open addressing based implementation of a hashmap (not supporting the Map interface though) for message
headers. The keys are strings and the values Headers, and they're stored in an array in the format
key-1 | header-1 | key-2 | header-2. The array is populated from left to right, so any null slots can terminate
an interation, or signal empty slots.
It is assumed that we only have a few headers, 3-4 on average. Note that getting a header for a given key and
putting a new key/header are operations with O(n) cost, so this implementation is not recommended for
a large number of elements.
This class is not synchronized
Constructor Summary | |
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Headers(Headers hdrs)
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Headers(int initial_capacity)
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Method Summary | |
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int |
capacity()
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Headers |
copy()
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Header |
getHeader(java.lang.String key)
Returns the header associated with key |
java.util.Map<java.lang.String,Header> |
getHeaders()
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java.lang.Object[] |
getRawData()
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int |
marshalledSize()
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java.lang.String |
printHeaders()
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java.lang.String |
printObjectHeaders()
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void |
putHeader(java.lang.String key,
Header hdr)
Puts a header given a key into the hashmap. |
Header |
putHeaderIfAbsent(java.lang.String key,
Header hdr)
Puts a header given a key into the map, only if the key doesn't exist yet |
Header |
removeHeader(java.lang.String key)
Deprecated. Use getHeader() instead. The issue with removing a header is described in http://jira.jboss.com/jira/browse/JGRP-393 |
int |
size()
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java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Headers(int initial_capacity)
public Headers(Headers hdrs)
Method Detail |
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public java.lang.Object[] getRawData()
public Header getHeader(java.lang.String key)
key
-
public java.util.Map<java.lang.String,Header> getHeaders()
public java.lang.String printHeaders()
public void putHeader(java.lang.String key, Header hdr)
public Header putHeaderIfAbsent(java.lang.String key, Header hdr)
key
- hdr
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public Header removeHeader(java.lang.String key)
key
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public Headers copy()
public int marshalledSize()
public int size()
public int capacity()
public java.lang.String printObjectHeaders()
public java.lang.String toString()
toString
in class java.lang.Object
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