diff options
| author | Nathan Lasseter <nathan@4574.co.uk> | 2013-05-22 15:34:00 +0100 |
|---|---|---|
| committer | Nathan Lasseter <nathan@4574.co.uk> | 2013-05-22 15:34:00 +0100 |
| commit | cc8ace92f17c8e5aef7d68ff316e5cd038cd36b5 (patch) | |
| tree | caad5218a1da276909c71a95c45725651b08d984 /libs/org.eclipse.paho.client.mqttv3/org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html | |
Initial Commit
Diffstat (limited to 'libs/org.eclipse.paho.client.mqttv3/org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html')
| -rw-r--r-- | libs/org.eclipse.paho.client.mqttv3/org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html | 506 |
1 files changed, 506 insertions, 0 deletions
diff --git a/libs/org.eclipse.paho.client.mqttv3/org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html b/libs/org.eclipse.paho.client.mqttv3/org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html new file mode 100644 index 0000000..7f73ce0 --- /dev/null +++ b/libs/org.eclipse.paho.client.mqttv3/org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html @@ -0,0 +1,506 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!--NewPage-->
+<HTML>
+<HEAD>
+<!-- Generated by javadoc (build 1.4.2) on Tue Oct 02 23:24:48 BST 2012 -->
+<TITLE>
+MqttDefaultFilePersistence (MQTT v3 Client API)
+</TITLE>
+
+<META NAME="keywords" CONTENT="org.eclipse.paho.client.mqttv3.MqttDefaultFilePersistence class">
+
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+ parent.document.title="MqttDefaultFilePersistence (MQTT v3 Client API)";
+}
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+
+ +<!-- ========= START OF TOP NAVBAR ======= -->
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+ SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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+DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD>
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+
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+<A NAME="main"></A>
+<!-- ======== START OF CLASS DATA ======== -->
+<H2>
+<FONT SIZE="-1">
+org.eclipse.paho.client.mqttv3</FONT>
+<BR>
+Class MqttDefaultFilePersistence</H2>
+<PRE>
+java.lang.Object
+ <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><B>org.eclipse.paho.client.mqttv3.MqttDefaultFilePersistence</B>
+</PRE>
+<DL>
+<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></DD>
+</DL>
+<HR>
+<DL>
+<DT>public class <B>MqttDefaultFilePersistence</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></DL>
+
+<P>
+An implementation of the <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3"><CODE>MqttClientPersistence</CODE></A> interface that provides + file based persistence. + + A directory is specified when the Persistence object is created. When the persistence + is then opened (see <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#open(java.lang.String, java.lang.String)"><CODE>open(String, String)</CODE></A>), a sub-directory is made beneath the base + for this particular client ID and connection key. This allows one persistence base directory + to be shared by multiple clients. + + The sub-directory's name is created from a concatenation of the client ID and connection key + with any instance of '/', '\\', ':' or ' ' removed.
+<P>
+
+<P>
+<HR>
+
+<P>
+<!-- ======== NESTED CLASS SUMMARY ======== -->
+
+
+<!-- =========== FIELD SUMMARY =========== -->
+
+
+<!-- ======== CONSTRUCTOR SUMMARY ======== -->
+
+<A NAME="constructor_summary"><!-- --></A> +<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
+<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
+<TH ALIGN="left" COLSPAN=2><FONT SIZE="+2">
+<B>Constructor Summary</B></FONT></TH>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#MqttDefaultFilePersistence()">MqttDefaultFilePersistence</A></B>()</CODE>
+
+<BR>
+ </TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#MqttDefaultFilePersistence(java.lang.String)">MqttDefaultFilePersistence</A></B>(java.lang.String directory)</CODE>
+
+<BR>
+ Create an file-based persistent data store within the specified directory.</TD>
+</TR>
+</TABLE>
+
+<!-- ========== METHOD SUMMARY =========== -->
+
+<A NAME="method_summary"><!-- --></A> +<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
+<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
+<TH ALIGN="left" COLSPAN=2><FONT SIZE="+2">
+<B>Method Summary</B></FONT></TH>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> void</CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#clear()">clear</A></B>()</CODE>
+
+<BR>
+ Clears persistence, so that it no longer contains any persisted data.</TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> void</CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#close()">close</A></B>()</CODE>
+
+<BR>
+ Close the persistent store that was previously opened. + </TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> boolean</CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#containsKey(java.lang.String)">containsKey</A></B>(java.lang.String key)</CODE>
+
+<BR>
+ Returns whether or not data is persisted using the specified key.</TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html" title="interface in org.eclipse.paho.client.mqttv3">MqttPersistable</A></CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#get(java.lang.String)">get</A></B>(java.lang.String key)</CODE>
+
+<BR>
+ Gets the specified data out of the persistent store.</TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> java.util.Enumeration</CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#keys()">keys</A></B>()</CODE>
+
+<BR>
+ Returns all of the persistent data from the previously specified persistence directory.</TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> void</CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#open(java.lang.String, java.lang.String)">open</A></B>(java.lang.String clientId, + java.lang.String theConnection)</CODE>
+
+<BR>
+ Initialise the persistent store. + </TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> void</CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#put(java.lang.String, org.eclipse.paho.client.mqttv3.MqttPersistable)">put</A></B>(java.lang.String key, + <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html" title="interface in org.eclipse.paho.client.mqttv3">MqttPersistable</A> message)</CODE>
+
+<BR>
+ Writes the specified persistent data to the previously specified persistence directory. + </TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
+<CODE> void</CODE></FONT></TD>
+<TD><CODE><B><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#remove(java.lang.String)">remove</A></B>(java.lang.String key)</CODE>
+
+<BR>
+ Deletes the data with the specified key from the previously specified persistence directory.</TD>
+</TR>
+</TABLE>
+ <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> +<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
+<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
+<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
+<TD><CODE>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
+</TR>
+</TABLE>
+
+<P>
+
+<!-- ============ FIELD DETAIL =========== -->
+
+
+<!-- ========= CONSTRUCTOR DETAIL ======== -->
+
+<A NAME="constructor_detail"><!-- --></A> +<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
+<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
+<TD COLSPAN=1><FONT SIZE="+2">
+<B>Constructor Detail</B></FONT></TD>
+</TR>
+</TABLE>
+
+<A NAME="MqttDefaultFilePersistence()"><!-- --></A><H3>
+MqttDefaultFilePersistence</H3>
+<PRE>
+public <B>MqttDefaultFilePersistence</B>() + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+</DL>
+<HR>
+
+<A NAME="MqttDefaultFilePersistence(java.lang.String)"><!-- --></A><H3>
+MqttDefaultFilePersistence</H3>
+<PRE>
+public <B>MqttDefaultFilePersistence</B>(java.lang.String directory) + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD>Create an file-based persistent data store within the specified directory.
+<P>
+<DT><B>Parameters:</B><DD><CODE>directory</CODE> - the directory to use.</DL>
+
+<!-- ============ METHOD DETAIL ========== -->
+
+<A NAME="method_detail"><!-- --></A> +<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
+<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
+<TD COLSPAN=1><FONT SIZE="+2">
+<B>Method Detail</B></FONT></TD>
+</TR>
+</TABLE>
+
+<A NAME="open(java.lang.String, java.lang.String)"><!-- --></A><H3>
+open</H3>
+<PRE>
+public void <B>open</B>(java.lang.String clientId, + java.lang.String theConnection) + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></B></DD>
+<DD>Initialise the persistent store. + If a persistent store exists for this client ID then open it, otherwise + create a new one. If the persistent store is already open then just return. + An application may use the same client ID to connect to many different + servers, so the client ID in conjunction with the + connection will uniquely identify the persistence store required.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#open(java.lang.String, java.lang.String)">open</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+<DT><B>Parameters:</B><DD><CODE>clientId</CODE> - The client for which the persistent store should be opened.<DD><CODE>theConnection</CODE> - The connection string as specified when the MQTT client instance was created. +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE> - if there was a problem opening the persistent store.</DL>
+</DD>
+</DL>
+<HR>
+
+<A NAME="close()"><!-- --></A><H3>
+close</H3>
+<PRE>
+public void <B>close</B>() + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></B></DD>
+<DD>Close the persistent store that was previously opened. + This will be called when a client application disconnects from the broker.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#close()">close</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+ +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE></DL>
+</DD>
+</DL>
+<HR>
+
+<A NAME="put(java.lang.String, org.eclipse.paho.client.mqttv3.MqttPersistable)"><!-- --></A><H3>
+put</H3>
+<PRE>
+public void <B>put</B>(java.lang.String key, + <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html" title="interface in org.eclipse.paho.client.mqttv3">MqttPersistable</A> message) + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD>Writes the specified persistent data to the previously specified persistence directory. + This method uses a safe overwrite policy to ensure IO errors do not lose messages.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#put(java.lang.String, org.eclipse.paho.client.mqttv3.MqttPersistable)">put</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+<DT><B>Parameters:</B><DD><CODE>message</CODE> - <DD><CODE>key</CODE> - the key for the data, which will be used later to retrieve it. +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE></DL>
+</DD>
+</DL>
+<HR>
+
+<A NAME="get(java.lang.String)"><!-- --></A><H3>
+get</H3>
+<PRE>
+public <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html" title="interface in org.eclipse.paho.client.mqttv3">MqttPersistable</A> <B>get</B>(java.lang.String key) + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></B></DD>
+<DD>Gets the specified data out of the persistent store.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#get(java.lang.String)">get</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key for the data, which was used when originally saving it. +<DT><B>Returns:</B><DD>the un-persisted data +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE> - if there was a problem getting the data + from the persistent store.</DL>
+</DD>
+</DL>
+<HR>
+
+<A NAME="remove(java.lang.String)"><!-- --></A><H3>
+remove</H3>
+<PRE>
+public void <B>remove</B>(java.lang.String key) + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD>Deletes the data with the specified key from the previously specified persistence directory.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#remove(java.lang.String)">remove</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+ +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE></DL>
+</DD>
+</DL>
+<HR>
+
+<A NAME="keys()"><!-- --></A><H3>
+keys</H3>
+<PRE>
+public java.util.Enumeration <B>keys</B>() + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD>Returns all of the persistent data from the previously specified persistence directory.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#keys()">keys</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+ +<DT><B>Returns:</B><DD>all of the persistent data from the persistence directory. +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE></DL>
+</DD>
+</DL>
+<HR>
+
+<A NAME="containsKey(java.lang.String)"><!-- --></A><H3>
+containsKey</H3>
+<PRE>
+public boolean <B>containsKey</B>(java.lang.String key) + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></B></DD>
+<DD>Returns whether or not data is persisted using the specified key.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#containsKey(java.lang.String)">containsKey</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+<DT><B>Parameters:</B><DD><CODE>key</CODE> - the key for data, which was used when originally saving it. +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE></DL>
+</DD>
+</DL>
+<HR>
+
+<A NAME="clear()"><!-- --></A><H3>
+clear</H3>
+<PRE>
+public void <B>clear</B>() + throws <A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></PRE>
+<DL>
+<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></B></DD>
+<DD>Clears persistence, so that it no longer contains any persisted data.
+<P>
+<DD><DL>
+<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#clear()">clear</A></CODE> in interface <CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html" title="interface in org.eclipse.paho.client.mqttv3">MqttClientPersistence</A></CODE></DL>
+</DD>
+<DD><DL>
+ +<DT><B>Throws:</B> +<DD><CODE><A HREF="../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></CODE></DL>
+</DD>
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