islandora/islandora_dc/islandora_dc.install

<?php

/**
 * @file
 * Install hooks for this module.
 */

/**
 * Implements hook_install().
 *
 * Creates shared fields for content types using DC metadata.
 */
function islandora_dc_install() {
  $field_names = array(
    ISLANDORA_DC_CONTRIBUTOR_FIELD,
    ISLANDORA_DC_COVERAGE_FIELD,
    ISLANDORA_DC_CREATOR_FIELD,
    ISLANDORA_DC_DATE_FIELD,
    ISLANDORA_DC_DESCRIPTION_FIELD,
    ISLANDORA_DC_FORMAT_FIELD,
    ISLANDORA_DC_IDENTIFIER_FIELD,
    ISLANDORA_DC_LANGUAGE_FIELD,
    ISLANDORA_DC_PUBLISHER_FIELD,
    ISLANDORA_DC_RELATION_FIELD,
    ISLANDORA_DC_RIGHTS_FIELD,
    ISLANDORA_DC_SOURCE_FIELD,
    ISLANDORA_DC_SUBJECT_FIELD,
    ISLANDORA_DC_TITLE_FIELD,
    ISLANDORA_DC_TYPE_FIELD,
  );

  foreach ($field_names as $field_name) {
    $field = array(
      'field_name' => $field_name,
      'type' => 'text_long',
      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
    );
    field_create_field($field);
  }
}