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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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Uses of Class org.eclipse.paho.client.mqttv3.MqttPersistenceException (MQTT v3 Client API)
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<B>Uses of Class<br>org.eclipse.paho.client.mqttv3.MqttPersistenceException</B></H2>
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Uses of <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A> in <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/package-summary.html">org.eclipse.paho.client.mqttv3</A></FONT></TH>
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<TD COLSPAN=2>Methods in <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/package-summary.html">org.eclipse.paho.client.mqttv3</A> that throw <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDeliveryToken.html" title="interface in org.eclipse.paho.client.mqttv3">MqttDeliveryToken</A></CODE></FONT></TD>
<TD><CODE><B>MqttTopic.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttTopic.html#publish(byte[], int, boolean)">publish</A></B>(byte[]&nbsp;payload,
        int&nbsp;qos,
        boolean&nbsp;retained)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Publishes a message on the topic.  </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDeliveryToken.html" title="interface in org.eclipse.paho.client.mqttv3">MqttDeliveryToken</A></CODE></FONT></TD>
<TD><CODE><B>MqttTopic.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttTopic.html#publish(org.eclipse.paho.client.mqttv3.MqttMessage)">publish</A></B>(<A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttMessage.html" title="class in org.eclipse.paho.client.mqttv3">MqttMessage</A>&nbsp;message)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Publishes the specified message to this topic, but doesn't wait for
 a response.  </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;byte[]</CODE></FONT></TD>
<TD><CODE><B>MqttPersistable.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getHeaderBytes()">getHeaderBytes</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the header bytes in an array.
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>MqttPersistable.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getHeaderLength()">getHeaderLength</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the length of the header.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>MqttPersistable.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getHeaderOffset()">getHeaderOffset</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the offset of the header within the byte array returned by <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getHeaderBytes()"><CODE>MqttPersistable.getHeaderBytes()</CODE></A>.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;byte[]</CODE></FONT></TD>
<TD><CODE><B>MqttPersistable.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getPayloadBytes()">getPayloadBytes</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the payload bytes in an array.
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>MqttPersistable.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getPayloadLength()">getPayloadLength</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the length of the payload.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>MqttPersistable.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getPayloadOffset()">getPayloadOffset</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the offset of the payload within the byte array returned by <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html#getPayloadBytes()"><CODE>MqttPersistable.getPayloadBytes()</CODE></A>.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttDefaultFilePersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#open(java.lang.String, java.lang.String)">open</A></B>(java.lang.String&nbsp;clientId,
     java.lang.String&nbsp;theConnection)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttDefaultFilePersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#close()">close</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttDefaultFilePersistence.</B><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&nbsp;key,
    <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html" title="interface in org.eclipse.paho.client.mqttv3">MqttPersistable</A>&nbsp;message)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;<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>MqttDefaultFilePersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#get(java.lang.String)">get</A></B>(java.lang.String&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttDefaultFilePersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#remove(java.lang.String)">remove</A></B>(java.lang.String&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deletes the data with the specified key from the previously specified persistence directory.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Enumeration</CODE></FONT></TD>
<TD><CODE><B>MqttDefaultFilePersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#keys()">keys</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>MqttDefaultFilePersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#containsKey(java.lang.String)">containsKey</A></B>(java.lang.String&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttDefaultFilePersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttDefaultFilePersistence.html#clear()">clear</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#open(java.lang.String, java.lang.String)">open</A></B>(java.lang.String&nbsp;clientId,
     java.lang.String&nbsp;serverURI)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Initialise the persistent store.
 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#close()">close</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#put(java.lang.String, org.eclipse.paho.client.mqttv3.MqttPersistable)">put</A></B>(java.lang.String&nbsp;key,
    <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistable.html" title="interface in org.eclipse.paho.client.mqttv3">MqttPersistable</A>&nbsp;persistable)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Puts the specified data into the persistent store.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<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>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#get(java.lang.String)">get</A></B>(java.lang.String&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#remove(java.lang.String)">remove</A></B>(java.lang.String&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove the data for the specified key.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Enumeration</CODE></FONT></TD>
<TD><CODE><B>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#keys()">keys</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an Enumeration over the keys in this persistent data store.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#clear()">clear</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>MqttClientPersistence.</B><B><A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttClientPersistence.html#containsKey(java.lang.String)">containsKey</A></B>(java.lang.String&nbsp;key)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns whether or not data is persisted using the specified key.</TD>
</TR>
</TABLE>
&nbsp;
<P>

<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
<TD COLSPAN=2>Constructors in <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/package-summary.html">org.eclipse.paho.client.mqttv3</A> that throw <A HREF="../../../../../../org/eclipse/paho/client/mqttv3/MqttPersistenceException.html" title="class in org.eclipse.paho.client.mqttv3">MqttPersistenceException</A></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>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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&nbsp;directory)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create an file-based persistent data store within the specified directory.</TD>
</TR>
</TABLE>
&nbsp;
<P>
<HR>


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