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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.axis2.clustering.state</a></div>
<h2 title="Interface StateManager" class="title">Interface StateManager</h2>
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<dt>All Superinterfaces:</dt>
<dd><code><a href="../../description/ParameterInclude.html" title="interface in org.apache.axis2.description">ParameterInclude</a></code></dd>
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<dt>All Known Implementing Classes:</dt>
<dd><code><a href="DefaultStateManager.html" title="class in org.apache.axis2.clustering.state">DefaultStateManager</a></code></dd>
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<pre>public interface <span class="typeNameLabel">StateManager</span>
extends <a href="../../description/ParameterInclude.html" title="interface in org.apache.axis2.description">ParameterInclude</a></pre>
<div class="block"><p>
This interface is responsible for handling context replication. The property changes in the
<a href="http://www.ibm.com/developerworks/webservices/library/ws-apacheaxis2/">
Axis2 context hierarchy
</a> in this node, are propagated to all other nodes in the cluster.
</p>
<p>
It is not mandatory to have a StateManager in a node. If we are not interested in
<a href="http://blog.afkham.org/2008/05/definition-of-high-availability.html">
High Availability</a>, we may disable context replication by commenting out the "contextManager"
section in the axis2.xml cluster configuration section. In such a scenatio, the cluster will be
used only for the purpose of
<a href="http://blog.afkham.org/2008/05/definition-of-scalability.html">Scalability</a>
</p>
<p>
The implementation of this interface is set by the
<a href="../../deployment/ClusterBuilder.html" title="class in org.apache.axis2.deployment"><code>ClusterBuilder</code></a>, by
reading the "contextManager" element in the axis2.xml
<p/>
e.g.
<code>
<b>
<contextManager class="org.apache.axis2.cluster.configuration.TribesContextManager">
</b>
</code>
</p></div>
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<h3>Method Summary</h3>
<table class="memberSummary">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util" class="externalLink">Map</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getReplicationExcludePatterns()">getReplicationExcludePatterns</a></span>()</code></th>
<td class="colLast">
<div class="block">Get all the excluded context property name patterns</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isContextClusterable(org.apache.axis2.context.AbstractContext)">isContextClusterable</a></span>&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context)</code></th>
<td class="colLast">
<div class="block">This is a check to see whether the properties in an instance of <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a>
should be replicated.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#removeContext(org.apache.axis2.context.AbstractContext)">removeContext</a></span>&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context)</code></th>
<td class="colLast">
<div class="block">This method is called when <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a> is removed from the system</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#replicateState(org.apache.axis2.clustering.state.StateClusteringCommand)">replicateState</a></span>&#8203;(<a href="StateClusteringCommand.html" title="class in org.apache.axis2.clustering.state">StateClusteringCommand</a>&nbsp;command)</code></th>
<td class="colLast">
<div class="block">Replicate state using a custom StateClusteringCommand</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setConfigurationContext(org.apache.axis2.context.ConfigurationContext)">setConfigurationContext</a></span>&#8203;(<a href="../../context/ConfigurationContext.html" title="class in org.apache.axis2.context">ConfigurationContext</a>&nbsp;configurationContext)</code></th>
<td class="colLast">
<div class="block">Set the system's configuration context.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setReplicationExcludePatterns(java.lang.String,java.util.List)">setReplicationExcludePatterns</a></span>&#8203;(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;contextType,
<a href="https://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&nbsp;patterns)</code></th>
<td class="colLast">
<div class="block">
All properties in the context with type <code>contextType</code> which have
names that match the specified pattern will be excluded from replication.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#updateContext(org.apache.axis2.context.AbstractContext)">updateContext</a></span>&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context)</code></th>
<td class="colLast">
<div class="block">This method is called when properties in an <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a> are updated.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#updateContext(org.apache.axis2.context.AbstractContext,java.lang.String%5B%5D)">updateContext</a></span>&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[]&nbsp;propertyNames)</code></th>
<td class="colLast">
<div class="block">This method is called when one need to update/replicate only certains properties in the
specified <code>context</code></div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#updateContexts(org.apache.axis2.context.AbstractContext%5B%5D)">updateContexts</a></span>&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>[]&nbsp;contexts)</code></th>
<td class="colLast">
<div class="block">This method is called when properties in a collection of <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a>s are updated.</div>
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<h3>Methods inherited from interface&nbsp;org.apache.axis2.description.<a href="../../description/ParameterInclude.html" title="interface in org.apache.axis2.description">ParameterInclude</a></h3>
<code><a href="../../description/ParameterInclude.html#addParameter(org.apache.axis2.description.Parameter)">addParameter</a>, <a href="../../description/ParameterInclude.html#deserializeParameters(org.apache.axiom.om.OMElement)">deserializeParameters</a>, <a href="../../description/ParameterInclude.html#getParameter(java.lang.String)">getParameter</a>, <a href="../../description/ParameterInclude.html#getParameters()">getParameters</a>, <a href="../../description/ParameterInclude.html#isParameterLocked(java.lang.String)">isParameterLocked</a>, <a href="../../description/ParameterInclude.html#removeParameter(org.apache.axis2.description.Parameter)">removeParameter</a></code></li>
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<h4>updateContext</h4>
<pre class="methodSignature">void&nbsp;updateContext&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context)
throws <a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></pre>
<div class="block">This method is called when properties in an <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a> are updated.
This could be addition of new properties, modifications of existing properties or
removal of properties.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - The context to be replicated</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></code> - If replication fails</dd>
</dl>
</li>
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<h4>updateContext</h4>
<pre class="methodSignature">void&nbsp;updateContext&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[]&nbsp;propertyNames)
throws <a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></pre>
<div class="block">This method is called when one need to update/replicate only certains properties in the
specified <code>context</code></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - The AbstractContext containing the properties to be replicated</dd>
<dd><code>propertyNames</code> - The names of the specific properties that should be replicated</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></code> - If replication fails</dd>
</dl>
</li>
</ul>
<a id="updateContexts(org.apache.axis2.context.AbstractContext[])">
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<h4>updateContexts</h4>
<pre class="methodSignature">void&nbsp;updateContexts&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>[]&nbsp;contexts)
throws <a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></pre>
<div class="block">This method is called when properties in a collection of <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a>s are updated.
This could be addition of new properties, modifications of existing properties or
removal of properties.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>contexts</code> - The AbstractContexts containing the properties to be replicated</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></code> - If replication fails</dd>
</dl>
</li>
</ul>
<a id="replicateState(org.apache.axis2.clustering.state.StateClusteringCommand)">
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<h4>replicateState</h4>
<pre class="methodSignature">void&nbsp;replicateState&#8203;(<a href="StateClusteringCommand.html" title="class in org.apache.axis2.clustering.state">StateClusteringCommand</a>&nbsp;command)
throws <a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></pre>
<div class="block">Replicate state using a custom StateClusteringCommand</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>command</code> - The custom StateClusteringCommand which can be used for replicating state</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></code> - If replication fails</dd>
</dl>
</li>
</ul>
<a id="removeContext(org.apache.axis2.context.AbstractContext)">
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<h4>removeContext</h4>
<pre class="methodSignature">void&nbsp;removeContext&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context)
throws <a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></pre>
<div class="block">This method is called when <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a> is removed from the system</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - The AbstractContext to be removed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../ClusteringFault.html" title="class in org.apache.axis2.clustering">ClusteringFault</a></code> - If context removal fails</dd>
</dl>
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<h4>isContextClusterable</h4>
<pre class="methodSignature">boolean&nbsp;isContextClusterable&#8203;(<a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context">AbstractContext</a>&nbsp;context)</pre>
<div class="block">This is a check to see whether the properties in an instance of <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a>
should be replicated. This allows an implementer to dissallow the replication of properties
stored in a certain type of context</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - The instance of AbstractContext under consideration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>True - if the provided <a href="../../context/AbstractContext.html" title="class in org.apache.axis2.context"><code>AbstractContext</code></a> is clusterable</dd>
</dl>
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<h4>setConfigurationContext</h4>
<pre class="methodSignature">void&nbsp;setConfigurationContext&#8203;(<a href="../../context/ConfigurationContext.html" title="class in org.apache.axis2.context">ConfigurationContext</a>&nbsp;configurationContext)</pre>
<div class="block">Set the system's configuration context. This will be used by the clustering implementations
to get information about the Axis2 environment and to correspond with the Axis2 environment</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>configurationContext</code> - The configuration context</dd>
</dl>
</li>
</ul>
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<h4>setReplicationExcludePatterns</h4>
<pre class="methodSignature">void&nbsp;setReplicationExcludePatterns&#8203;(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;contextType,
<a href="https://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&nbsp;patterns)</pre>
<div class="block"><p>
All properties in the context with type <code>contextType</code> which have
names that match the specified pattern will be excluded from replication.
</p>
<p/>
<p>
Only prefixes and suffixes are allowed. e.g. the local_* pattern indicates that
all property names starting with local_ should be omitted from replication. *_local pattern
indicated that all property names ending with _local should be omitted from replication.
* pattern indicates that all properties should be excluded.
</p>
<p>
Generally, we can use the context class name as the context type.
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>contextType</code> - The type of the context such as
org.apache.axis2.context.ConfigurationContext,
org.apache.axis2.context.ServiceGroupContext &
org.apache.axis2.context.ServiceContext.
Also "defaults" is a special type, which will apply to all contexts</dd>
<dd><code>patterns</code> - The patterns</dd>
</dl>
</li>
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<h4>getReplicationExcludePatterns</h4>
<pre class="methodSignature"><a href="https://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util" class="externalLink">Map</a>&nbsp;getReplicationExcludePatterns()</pre>
<div class="block">Get all the excluded context property name patterns</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>All the excluded pattern of all the contexts. The key of the Map is the
the <code>contextType</code>. See <a href="#setReplicationExcludePatterns(java.lang.String,java.util.List)"><code>setReplicationExcludePatterns(String,List)</code></a>.
The values are of type <a href="https://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink"><code>List</code></a> of <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>String</code></a> Objects,
which are a collection of patterns to be excluded.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="#setReplicationExcludePatterns(java.lang.String,java.util.List)"><code>setReplicationExcludePatterns(String, java.util.List)</code></a></dd>
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