php-doc-en/reference/solr/solrclient/commit.xml

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<refentry xml:id="solrclient.commit" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>SolrClient::commit</refname>
  <refpurpose>Finalizes all add/deletes made to the index</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <modifier>public</modifier> <type>SolrUpdateResponse</type><methodname>SolrClient::commit</methodname>
   <methodparam choice="opt"><type>bool</type><parameter>softCommit</parameter><initializer>&false;</initializer></methodparam>
   <methodparam choice="opt"><type>bool</type><parameter>waitSearcher</parameter><initializer>&true;</initializer></methodparam>
   <methodparam choice="opt"><type>bool</type><parameter>expungeDeletes</parameter><initializer>&false;</initializer></methodparam>
  </methodsynopsis>
  <para>
   This method finalizes all add/deletes made to the index.
  </para>

 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>softCommit</parameter></term>
     <listitem>
      <para>
       This will refresh the 'view' of the index in a more performant manner, but without "on-disk" guarantees. (Solr4.0+)
      </para>
      <para>
          A soft commit is much faster since it only makes index changes visible and does not fsync index files or write a new index descriptor. 
          If the JVM crashes or there is a loss of power, changes that occurred after the last hard commit will be lost. 
          Search collections that have near-real-time requirements (that want index changes to be quickly visible to searches) will want to soft commit often but hard commit less frequently. 
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>waitSearcher</parameter></term>
     <listitem>
      <para>
       block until a new searcher is opened and registered as the main query searcher, making the changes visible. 
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>expungeDeletes</parameter></term>
     <listitem>
      <para>
       Merge segments with deletes away. (Solr1.4+)
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns a <classname>SolrUpdateResponse</classname> object on success or throws an exception on failure.
  </para>
 </refsect1>
 
 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   Throws <classname>SolrClientException</classname> if the client had failed, or there was a connection issue.
  </para>
  <para>
   Throws <classname>SolrServerException</classname> if the Solr Server had failed to process the request.
  </para>
 </refsect1>
 
 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>PECL solr 1.1.0, 2.0.0</entry>
       <entry>
        $maxSegments removed
       </entry>
      </row>
      <row>
       <entry>PECL solr 2.0.0b</entry>
       <entry>
        API Changed: SolrClient::commit ([ int $maxSegments = 0 [, bool $softCommit = false [, bool $waitSearcher = true[, bool $expungeDeletes = false ]]] )
       </entry>
      </row>
      
      <row>
       <entry>PECL solr 0.9.2</entry>
       <entry>
        Signature: SolrClient::commit ([ int $maxSegments = 1 [, bool $waitFlush = true [, bool $waitSearcher = true ]]] ). 
        $waitFlush: Block until index changes are flushed to disk.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>
 <refsect1 role="notes">
  &reftitle.notes;
  <warning>
   <para>
        PECL Solr &gt;= 2.0 only supports Solr Server &gt;= 4.0 
   </para>
  </warning>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><methodname>SolrClient::optimize</methodname></member>
    <member><methodname>SolrClient::rollback</methodname></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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