releases/latest/javadoc/org/apache/geode/cache/execute/FunctionService.html - geode-site - Git at Google

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 <h2 title="Class FunctionService" class="title">Class FunctionService</h2>
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 <pre>public class <span class="typeNameLabel">FunctionService</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
 <div class="block">Provides the entry point into execution of user defined <a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute">Function</a>s.
  <p>
  Function execution provides a means to route application behaviour to <a href="../../../../../org/apache/geode/cache/Region.html" title="interface in org.apache.geode.cache">data</a> or
  more generically to peers in a <a href="../../../../../org/apache/geode/distributed/DistributedSystem.html" title="class in org.apache.geode.distributed"><code>DistributedSystem</code></a> or servers in a <a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client"><code>Pool</code></a>.
  <p></div>
 <dl>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>GemFire 6.0</dd>
 </dl>
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 <tr>
 <th class="colFirst" scope="col">Modifier</th>
 <th class="colLast" scope="col">Constructor and Description</th>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>protected </code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#FunctionService-org.apache.geode.internal.cache.execute.FunctionExecutionService-">FunctionService</a></span>(org.apache.geode.internal.cache.execute.FunctionExecutionService&nbsp;functionExecutionService)</code>&nbsp;</td>
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 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Method and Description</th>
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 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute">Function</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#getFunction-java.lang.String-">getFunction</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;functionId)</code>
 <div class="block">Returns the <a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute"><code>Function</code></a> defined by the functionId, returns null if no function is found
  for the specified functionId</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute">Function</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#getRegisteredFunctions--">getRegisteredFunctions</a></span>()</code>
 <div class="block">Returns all locally registered functions</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#isRegistered-java.lang.String-">isRegistered</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;functionId)</code>
 <div class="block">Returns true if the function is registered to FunctionService</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onMember-org.apache.geode.distributed.DistributedMember-">onMember</a></span>(<a href="../../../../../org/apache/geode/distributed/DistributedMember.html" title="interface in org.apache.geode.distributed">DistributedMember</a>&nbsp;distributedMember)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  a <a href="../../../../../org/apache/geode/distributed/DistributedMember.html" title="interface in org.apache.geode.distributed"><code>DistributedMember</code></a>.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onMember-java.lang.String...-">onMember</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>...&nbsp;groups)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  one member of each group provided.</div>
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 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onMembers-java.util.Set-">onMembers</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="../../../../../org/apache/geode/distributed/DistributedMember.html" title="interface in org.apache.geode.distributed">DistributedMember</a>&gt;&nbsp;distributedMembers)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  the set of <a href="../../../../../org/apache/geode/distributed/DistributedMember.html" title="interface in org.apache.geode.distributed"><code>DistributedMember</code></a>s.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onMembers-java.lang.String...-">onMembers</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>...&nbsp;groups)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  all peer members.</div>
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 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onRegion-org.apache.geode.cache.Region-">onRegion</a></span>(<a href="../../../../../org/apache/geode/cache/Region.html" title="interface in org.apache.geode.cache">Region</a>&nbsp;region)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data dependent function on
  the specified Region.<br>
  When invoked from a GemFire client, the method returns an Execution instance that sends a
  message to one of the connected servers as specified by the <a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client"><code>Pool</code></a> for the region.</div>
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 <tr id="i8" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onServer-org.apache.geode.cache.client.Pool-">onServer</a></span>(<a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client">Pool</a>&nbsp;pool)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  a server in the provided <a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client"><code>Pool</code></a>.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onServer-org.apache.geode.cache.RegionService-">onServer</a></span>(<a href="../../../../../org/apache/geode/cache/RegionService.html" title="interface in org.apache.geode.cache">RegionService</a>&nbsp;regionService)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  a server that the given cache is connected to.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onServers-org.apache.geode.cache.client.Pool-">onServers</a></span>(<a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client">Pool</a>&nbsp;pool)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  all the servers in the provided <a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client"><code>Pool</code></a>.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#onServers-org.apache.geode.cache.RegionService-">onServers</a></span>(<a href="../../../../../org/apache/geode/cache/RegionService.html" title="interface in org.apache.geode.cache">RegionService</a>&nbsp;regionService)</code>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  all the servers that the given cache is connected to.</div>
 </td>
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 <tr id="i12" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#registerFunction-org.apache.geode.cache.execute.Function-">registerFunction</a></span>(<a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute">Function</a>&nbsp;function)</code>
 <div class="block">Registers the given <a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute"><code>Function</code></a> with the <a href="../../../../../org/apache/geode/cache/execute/FunctionService.html" title="class in org.apache.geode.cache.execute"><code>FunctionService</code></a> using
  <a href="../../../../../org/apache/geode/cache/execute/Function.html#getId--"><code>Function.getId()</code></a>.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/geode/cache/execute/FunctionService.html#unregisterFunction-java.lang.String-">unregisterFunction</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;functionId)</code>
 <div class="block">Unregisters the given <a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute"><code>Function</code></a> with the <a href="../../../../../org/apache/geode/cache/execute/FunctionService.html" title="class in org.apache.geode.cache.execute"><code>FunctionService</code></a> using
  <a href="../../../../../org/apache/geode/cache/execute/Function.html#getId--"><code>Function.getId()</code></a>.</div>
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 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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 <pre>protected&nbsp;FunctionService(org.apache.geode.internal.cache.execute.FunctionExecutionService&nbsp;functionExecutionService)</pre>
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 <pre>public static&nbsp;<a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute">Execution</a>&nbsp;onRegion(<a href="../../../../../org/apache/geode/cache/Region.html" title="interface in org.apache.geode.cache">Region</a>&nbsp;region)</pre>
 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data dependent function on
  the specified Region.<br>
  When invoked from a GemFire client, the method returns an Execution instance that sends a
  message to one of the connected servers as specified by the <a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client"><code>Pool</code></a> for the region. <br>
  Depending on the filters setup on the <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a>, the function is executed on all
  GemFire members that define the data region, or a subset of members.
  <a href="../../../../../org/apache/geode/cache/execute/Execution.html#withFilter-java.util.Set-"><code>Execution.withFilter(Set)</code></a>).

  For DistributedRegions with DataPolicy.NORMAL, it throws UnsupportedOperationException. For
  DistributedRegions with DataPolicy.EMPTY, execute the function on any random member which has
  DataPolicy.REPLICATE <br>
  . For DistributedRegions with DataPolicy.REPLICATE, execute the function locally. For Regions
  with DataPolicy.PARTITION, it executes on members where the data resides as specified by the
  filter.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>region</code> - the <a href="../../../../../org/apache/geode/cache/Region.html" title="interface in org.apache.geode.cache"><code>Region</code></a> on which the returned <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> will execute functions</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data dependent function on
          the specified <a href="../../../../../org/apache/geode/cache/Region.html" title="interface in org.apache.geode.cache"><code>Region</code></a></dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
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  a server in the provided <a href="../../../../../org/apache/geode/cache/client/Pool.html" title="interface in org.apache.geode.cache.client"><code>Pool</code></a>.
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  a server that the given cache is connected to.
  <p>
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 <dl>
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 <dd><code><a href="../../../../../org/apache/geode/cache/execute/FunctionException.html" title="class in org.apache.geode.cache.execute">FunctionException</a></code> - if cache is null, is not on a client, or it does not have a default
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 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  all the servers that the given cache is connected to. If one of the servers goes down while
  dispatching or executing the function on the server, an Exception will be thrown.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
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 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../../org/apache/geode/cache/execute/FunctionException.html" title="class in org.apache.geode.cache.execute">FunctionException</a></code> - if cache is null, is not on a client, or it does not have a default
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 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  a <a href="../../../../../org/apache/geode/distributed/DistributedMember.html" title="interface in org.apache.geode.distributed"><code>DistributedMember</code></a>. If the member is not found, executing the function will throw an
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 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
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          a <a href="../../../../../org/apache/geode/distributed/DistributedMember.html" title="interface in org.apache.geode.distributed"><code>DistributedMember</code></a></dd>
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  members that belong to the provided groups.
  <p>
  If one of the members goes down while dispatching or executing the function on the member, an
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 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
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         <a href="../../distributed/DistributedSystem.html#groups"> <code>groups</code></a>) on
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 <dt><span class="returnLabel">Returns:</span></dt>
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 <dt><span class="throwsLabel">Throws:</span></dt>
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 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
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 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
          the set of <a href="../../../../../org/apache/geode/distributed/DistributedMember.html" title="interface in org.apache.geode.distributed"><code>DistributedMember</code></a>s provided</dd>
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 <div class="block">Returns an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
  one member of each group provided.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
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         <a href="../../distributed/DistributedSystem.html#groups"> <code>groups</code></a>) on
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 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an <a href="../../../../../org/apache/geode/cache/execute/Execution.html" title="interface in org.apache.geode.cache.execute"><code>Execution</code></a> object that can be used to execute a data independent function on
          one member of each group provided</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
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 <pre>public static&nbsp;<a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute">Function</a>&nbsp;getFunction(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;functionId)</pre>
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  for the specified functionId</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>functionId</code> - a functionId</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
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          specified functionId</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../../org/apache/geode/cache/execute/FunctionException.html" title="class in org.apache.geode.cache.execute">FunctionException</a></code> - if functionID passed is null</dd>
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  <p>
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  <p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
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 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../../org/apache/geode/cache/execute/FunctionException.html" title="class in org.apache.geode.cache.execute">FunctionException</a></code> - if function instance passed is null or Function.getId() returns null</dd>
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 <div class="block">Unregisters the given <a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute"><code>Function</code></a> with the <a href="../../../../../org/apache/geode/cache/execute/FunctionService.html" title="class in org.apache.geode.cache.execute"><code>FunctionService</code></a> using
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  <p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>functionId</code> - the ID of the function</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../../org/apache/geode/cache/execute/FunctionException.html" title="class in org.apache.geode.cache.execute">FunctionException</a></code> - if function instance passed is null or Function.getId() returns null</dd>
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 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>functionId</code> - the ID of the function</dd>
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 <dd>whether the function is registered to FunctionService</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="../../../../../org/apache/geode/cache/execute/FunctionException.html" title="class in org.apache.geode.cache.execute">FunctionException</a></code> - if function instance passed is null or Function.getId() returns null</dd>
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 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>A view of registered functions as a Map of <a href="../../../../../org/apache/geode/cache/execute/Function.html#getId--"><code>Function.getId()</code></a> to <a href="../../../../../org/apache/geode/cache/execute/Function.html" title="interface in org.apache.geode.cache.execute"><code>Function</code></a></dd>
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