destinationset.html

发布/订阅系统路由重配算法,可应用于ad hoc环境

destinations</H3>
<PRE>
protected <A HREF="../util/SimpleHashtable.html" title="class in util">SimpleHashtable</A> <B>destinations</B></PRE>
<DL>
<DD>The underlying hashtable the destination set is based on.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="message"><!-- --></A><H3>
message</H3>
<PRE>
protected <A HREF="../com/Message.html" title="class in com">Message</A> <B>message</B></PRE>
<DL>
<DD>The message or filter to be mapped to added destinations.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="filter"><!-- --></A><H3>
filter</H3>
<PRE>
protected <A HREF="../broker/Filter.html" title="class in broker">Filter</A> <B>filter</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="restricted"><!-- --></A><H3>
restricted</H3>
<PRE>
protected boolean <B>restricted</B></PRE>
<DL>
<DD>Flag, if adding destinations is allowed.
<P>
<DL>
</DL>
</DL>

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<A NAME="DestinationSet()"><!-- --></A><H3>
DestinationSet</H3>
<PRE>
public <B>DestinationSet</B>()</PRE>
<DL>
<DD>Creates an empty destination set.
<P>
</DL>
<HR>

<A NAME="DestinationSet(com.Message)"><!-- --></A><H3>
DestinationSet</H3>
<PRE>
public <B>DestinationSet</B>(<A HREF="../com/Message.html" title="class in com">Message</A>&nbsp;message)</PRE>
<DL>
<DD>Creates an empty destination set.
<P>
<DT><B>Parameters:</B><DD><CODE>message</CODE> - message to be mapped to added destinations.</DL>
<HR>

<A NAME="DestinationSet(broker.Filter)"><!-- --></A><H3>
DestinationSet</H3>
<PRE>
public <B>DestinationSet</B>(<A HREF="../broker/Filter.html" title="class in broker">Filter</A>&nbsp;filter)</PRE>
<DL>
<DD>Creates an empty destination set.
<P>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - filter to be mapped to added destinations.</DL>

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<A NAME="setMessage(com.Message)"><!-- --></A><H3>
setMessage</H3>
<PRE>
public void <B>setMessage</B>(<A HREF="../com/Message.html" title="class in com">Message</A>&nbsp;message)</PRE>
<DL>
<DD>Sets the message, which is mapped to all added destinations.
 Overrides a filter previously set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>message</CODE> - messge which is mapped to all added destinations.</DL>
</DD>
</DL>
<HR>

<A NAME="getMessage()"><!-- --></A><H3>
getMessage</H3>
<PRE>
public <A HREF="../com/Message.html" title="class in com">Message</A> <B>getMessage</B>()</PRE>
<DL>
<DD>Returns the last message, which was set.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the last message, which was set.</DL>
</DD>
</DL>
<HR>

<A NAME="setFilter(broker.Filter)"><!-- --></A><H3>
setFilter</H3>
<PRE>
public void <B>setFilter</B>(<A HREF="../broker/Filter.html" title="class in broker">Filter</A>&nbsp;filter)</PRE>
<DL>
<DD>Sets the filter, which is mapped to all added destinations.
 Overrides a message previously set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - filter which is mapped to all added destinations.</DL>
</DD>
</DL>
<HR>

<A NAME="getFilter()"><!-- --></A><H3>
getFilter</H3>
<PRE>
public <A HREF="../broker/Filter.html" title="class in broker">Filter</A> <B>getFilter</B>()</PRE>
<DL>
<DD>Returns the last filter, which was set.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the last filter, which was set.</DL>
</DD>
</DL>
<HR>

<A NAME="isEmpty()"><!-- --></A><H3>
isEmpty</H3>
<PRE>
public boolean <B>isEmpty</B>()</PRE>
<DL>
<DD>Returns true, if the destination set maps no destination to a message.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>true, if the destination set maps no destination to a message,
         otherwise false.</DL>
</DD>
</DL>
<HR>

<A NAME="clear()"><!-- --></A><H3>
clear</H3>
<PRE>
public void <B>clear</B>()</PRE>
<DL>
<DD>Clears all destinations.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="iterator()"><!-- --></A><H3>
iterator</H3>
<PRE>
public java.util.Iterator <B>iterator</B>()</PRE>
<DL>
<DD>Returns a new Iterator to access the elements in the set.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>a set iterator.</DL>
</DD>
</DL>
<HR>

<A NAME="add(broker.Destination)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(<A HREF="../broker/Destination.html" title="interface in broker">Destination</A>&nbsp;destination)</PRE>
<DL>
<DD>Adds a destination to the set, if it is not restricted.
 A previously specified message or filter is mapped to the added
 destination.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>destination</CODE> - the destination to add.</DL>
</DD>
</DL>
<HR>

<A NAME="addAll(java.util.Collection)"><!-- --></A><H3>
addAll</H3>
<PRE>
public void <B>addAll</B>(java.util.Collection&nbsp;destinations)</PRE>
<DL>
<DD>Adds a all destinations to the set, if it is not restricted.
 A previously specified message or filter is mapped to the added
 destinations.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>destinations</CODE> - the destinations to add.</DL>
</DD>
</DL>
<HR>

<A NAME="remove(broker.Destination)"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>(<A HREF="../broker/Destination.html" title="interface in broker">Destination</A>&nbsp;destination)</PRE>
<DL>
<DD>Removes a destination from the set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>destination</CODE> - the destination to remove.</DL>
</DD>
</DL>
<HR>

<A NAME="contains(broker.Destination)"><!-- --></A><H3>
contains</H3>
<PRE>
public boolean <B>contains</B>(<A HREF="../broker/Destination.html" title="interface in broker">Destination</A>&nbsp;destination)</PRE>
<DL>
<DD>Returns true if the destination set contains the specified destination.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>destination</CODE> - the destination.
<DT><B>Returns:</B><DD>true if the destination set contains the specified destination.</DL>
</DD>
</DL>
<HR>

<A NAME="restrictTo(broker.Destination)"><!-- --></A><H3>
restrictTo</H3>
<PRE>
public void <B>restrictTo</B>(<A HREF="../broker/Destination.html" title="interface in broker">Destination</A>&nbsp;destination)</PRE>
<DL>
<DD>Restricts the set to the specified destination.
 If the specified destination is not a member of the set, 
 the result is an empty set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>destination</CODE> - the specified destination.</DL>
</DD>
</DL>
<HR>

<A NAME="addFilters(broker.DestinationSet)"><!-- --></A><H3>
addFilters</H3>
<PRE>
public void <B>addFilters</B>(<A HREF="../broker/DestinationSet.html" title="class in broker">DestinationSet</A>&nbsp;uncoveredDestinations)</PRE>
<DL>
<DD>Adds all mapped filters to the uncovered subscriptions.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>uncoveredDestinations</CODE> - a destination set containing the uncovered
        filters with its destinations.</DL>
</DD>
</DL>
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