archived-doc-pt-br/reference/pdo_pgsql/pdo-pgsql.xml

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<reference xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude" xml:id="class.pdo-pgsql" role="class">
 <title>A classe Pdo\Pgsql</title>
 <titleabbrev>Pdo\Pgsql</titleabbrev>

 <partintro>

  <!-- {{{ ClassName intro -->
  <section xml:id="pdo-pgsql.intro">
   &reftitle.intro;
   <simpara>
    Uma subclasse <classname>PDO</classname> representando uma conexão que usa
    o driver PDO PostgreSQL.
   </simpara>
   <para>
    Este driver oferece suporte a um analisador de consulta SQL dedicado para o dialeto PostgreSQL.
    Ele pode lidar com o seguinte:
    <itemizedlist>
     <listitem>
      <simpara>
       Literais entre aspas simples e duplas, com duplicação como mecanismo de escape
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       Literais de string de “escape” estilo C
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       Literais de string entre cifrões
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       Comentários com dois traços e estilo C (não aninhados).
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       Suporte para <literal>??</literal> como sequência de escape para o
       operador <literal>?</literal>.
      </simpara>
     </listitem>
    </itemizedlist>
   </para>
  </section>
  <!-- }}} -->

  <section xml:id="pdo-pgsql.synopsis">
   &reftitle.classsynopsis;

   <!-- {{{ Synopsis -->
   <packagesynopsis>
    <package>Pdo</package>

    <classsynopsis class="class">
     <ooclass>
      <classname>Pgsql</classname>
     </ooclass>

     <ooclass>
      <modifier>extends</modifier>
      <classname>PDO</classname>
     </ooclass>

     <classsynopsisinfo role="comment">&InheritedConstants;</classsynopsisinfo>
     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo')/db:partintro/db:section/db:classsynopsis/db:fieldsynopsis[preceding-sibling::db:classsynopsisinfo[1][@role='comment' and text()='&Constants;']]))">
      <xi:fallback/>
     </xi:include>

     <classsynopsisinfo role="comment">&Constants;</classsynopsisinfo>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="pdo-pgsql.constants.attr-disable-prepares">Pdo\Pgsql::ATTR_DISABLE_PREPARES</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="pdo-pgsql.constants.attr-result-memory-size">Pdo\Pgsql::ATTR_RESULT_MEMORY_SIZE</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="pdo-pgsql.constants.transaction-idle">Pdo\Pgsql::TRANSACTION_IDLE</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="pdo-pgsql.constants.transaction-active">Pdo\Pgsql::TRANSACTION_ACTIVE</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="pdo-pgsql.constants.transaction-intrans">Pdo\Pgsql::TRANSACTION_INTRANS</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="pdo-pgsql.constants.transaction-inerror">Pdo\Pgsql::TRANSACTION_INERROR</varname>
     </fieldsynopsis>
     <fieldsynopsis>
      <modifier>public</modifier>
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="pdo-pgsql.constants.transaction-unknown">Pdo\Pgsql::TRANSACTION_UNKNOWN</varname>
     </fieldsynopsis>

     <classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo-pgsql')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[@role='Pdo\\Pgsql'])">
      <xi:fallback/>
     </xi:include>

     <classsynopsisinfo role="comment">&InheritedMethods;</classsynopsisinfo>
     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo')/db:refentry/db:refsect1[@role='description']/descendant::db:constructorsynopsis[@role='PDO'])">
      <xi:fallback/>
     </xi:include>
     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.pdo')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[@role='PDO'])">
      <xi:fallback/>
     </xi:include>
    </classsynopsis>
   </packagesynopsis>
   <!-- }}} -->

  </section>

  <section xml:id="pdo-pgsql.constants">
   &reftitle.constants;
   <variablelist>
    <varlistentry xml:id="pdo-pgsql.constants.attr-disable-prepares">
     <term><constant>Pdo\Pgsql::ATTR_DISABLE_PREPARES</constant></term>
     <listitem>
      <simpara>
       Envia a consulta e os parâmetros ao servidor juntos em uma única chamada,
       evitando a necessidade de criar uma instrução preparada nomeada separadamente.
       Se a consulta for executada apenas uma vez, isso poderá reduzir a latência,
       evitando uma viagem de ida e volta desnecessária ao servidor.
      </simpara>
     </listitem>
    </varlistentry>
    <varlistentry xml:id="pdo-pgsql.constants.attr-result-memory-size">
     <term><constant>Pdo\Pgsql::ATTR_RESULT_MEMORY_SIZE</constant></term>
     <listitem>
      <simpara>
       Retorna a quantidade de memória, em bytes, alocada para a instância
       especificada do resultado da consulta <classname>PDOStatement</classname>
       ou &null; se não existirem resultados antes da consulta ser executada.
      </simpara>
     </listitem>
    </varlistentry>
    <varlistentry xml:id="pdo-pgsql.constants.transaction-idle">
     <term><constant>Pdo\Pgsql::TRANSACTION_IDLE</constant></term>
     <listitem>
      <simpara>
      </simpara>
     </listitem>
    </varlistentry>
    <varlistentry xml:id="pdo-pgsql.constants.transaction-active">
     <term><constant>Pdo\Pgsql::TRANSACTION_ACTIVE</constant></term>
     <listitem>
      <simpara>
      </simpara>
     </listitem>
    </varlistentry>
    <varlistentry xml:id="pdo-pgsql.constants.transaction-intrans">
     <term><constant>Pdo\Pgsql::TRANSACTION_INTRANS</constant></term>
     <listitem>
      <simpara>
      </simpara>
     </listitem>
    </varlistentry>
    <varlistentry xml:id="pdo-pgsql.constants.transaction-inerror">
     <term><constant>Pdo\Pgsql::TRANSACTION_INERROR</constant></term>
     <listitem>
      <simpara>
      </simpara>
     </listitem>
    </varlistentry>
    <varlistentry xml:id="pdo-pgsql.constants.transaction-unknown">
     <term><constant>Pdo\Pgsql::TRANSACTION_UNKNOWN</constant></term>
     <listitem>
      <simpara>
      </simpara>
     </listitem>
    </varlistentry>
   </variablelist>
  </section>
 </partintro>

 &reference.pdo-pgsql.pdo.entities.pgsql;

</reference>
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