PostgreSQL92ContribKeywords.php

<?php
namespace Inbep\Component\Doctrine\DBAL\Platforms\Keywords;

use Doctrine\DBAL\Platforms\Keywords\PostgreSQL92Keywords;

/**
 * @author Sérgio Rafael Siqueira <[email protected]>
 */
class PostgreSQL92ContribKeywords extends PostgreSQL92Keywords
{
    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'PostgreSQL92Contrib';
    }

    /**
     * {@inheritdoc}
     *
     * @link http://www.postgresql.org/docs/9.2/static/citext.html
     */
    protected function getKeywords()
    {
        return array_merge(parent::getKeywords(), [
            'CITEXT'
        ]);
    }
}

PostgreSQL92ContribPlatform.php

<?php
namespace Inbep\Component\Doctrine\DBAL\Platforms;

use Doctrine\DBAL\Platforms\PostgreSQL92Platform;

/**
 * @author Sérgio Rafael Siqueira <[email protected]>
 */
class PostgreSQL92ContribPlatform extends PostgreSQL92Platform
{
    /**
     * {@inheritdoc}
     */
    public function getCitextTypeDeclarationSQL(array $field)
    {
        return 'CITEXT';
    }

    /**
     * {@inheritdoc}
     */
    protected function getReservedKeywordsClass()
    {
        return '\Inbep\Component\Doctrine\DBAL\Platforms\Keywords\PostgreSQL92ContribKeywords';
    }

    /**
     * {@inheritdoc}
     */
    protected function initializeDoctrineTypeMappings()
    {
        parent::initializeDoctrineTypeMappings();
        $this->doctrineTypeMapping['citext'] = 'text';
    }
}