tripal/tripal_feature/tripal_feature.install

<?php
/**
 * @file
 * Installation of the feature module
 */

/**
 * Implements hook_disable().
 *
 * Disable default views when module is disabled
 *
 * @ingroup tripal_feature
 */
function tripal_feature_disable() {

  // Disable all default views provided by this module
  require_once("tripal_feature.views_default.inc");
  $views = tripal_feature_views_default_views();
  foreach (array_keys($views) as $view_name) {
    tripal_views_admin_disable_view($view_name,FALSE,array('suppress_error' => TRUE));
  }

}

/**
 * Implements hook_requirements().
 *
 * @ingroup tripal_feature
 */
function tripal_feature_requirements($phase) {
  $requirements = array();
  if ($phase == 'install') {
    // make sure chado is installed
    if (!$GLOBALS["chado_is_installed"]) {
      $requirements ['tripal_feature'] = array(
          'title' => "t ripal_feature",
          'value' => "ERROR: Chado must be installed before this module can be enabled",
          'severity' => REQUIREMENT_ERROR,
      );
    }
  }
  return $requirements;
}

/**
 * Implements hook_install().
 *
 * @ingroup tripal_feature
 */
function tripal_feature_install() {
  // create the module's data directory
  tripal_create_files_dir('tripal_feature');

  // add the materialized view
  tripal_feature_add_organism_count_mview();

  // create the temp table we will use for loading GFF files
  tripal_cv_create_tripal_gff_temp();
}

/**
 * Implements hook_uninstall().
 *
 * @ingroup tripal_feature
 */
function tripal_feature_uninstall() {

}

/**
 * Create a temporary table used for loading gff3 files
 *
 * @ingroup tripal_feature
 */
function tripal_cv_create_tripal_gff_temp() {
  // the tripal_obo_temp table is used for temporary housing of records when loading OBO files
  // we create it here using plain SQL because we want it to be in the chado schema but we
  // do not want to use the Tripal Custom Table API because we don't want it to appear in the
  // list of custom tables.  It needs to be available for the Tripal Chado API so we create it
  // here and then define it in the tripal_cv/api/tripal_cv.schema.api.inc
  if (!db_table_exists('chado.tripal_gff_temp')) {
    $sql = "
      CREATE TABLE {tripal_gff_temp} (
        feature_id integer NOT NULL,
        organism_id integer NOT NULL,
        uniquename text NOT NULL,
        type_name character varying(1024) NOT NULL,
        CONSTRAINT tripal_gff_temp_uq0 UNIQUE (feature_id),
        CONSTRAINT tripal_gff_temp_uq1 UNIQUE (uniquename, organism_id, type_name)
      );
    ";
    chado_query($sql);
    $sql = "CREATE INDEX tripal_gff_temp_idx0 ON {tripal_gff_temp} USING btree (feature_id)";
    chado_query($sql);
    $sql = "CREATE INDEX tripal_gff_temp_idx1 ON {tripal_gff_temp} USING btree (organism_id)";
    chado_query($sql);
    $sql = "CREATE INDEX tripal_gff_temp_idx2 ON {tripal_gff_temp} USING btree (uniquename)";
    chado_query($sql);
  }
}

/**
 * Implementation of hook_schema().
 *
 * @ingroup tripal_feature
 */
function tripal_feature_schema() {

  $schema['chado_feature'] = array(
    'fields' => array(
      'vid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0
       ),
      'nid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0
       ),
      'feature_id' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0
      ),
      'sync_date' => array(
        'type' => 'int',
        'not null' => FALSE,
        'description' => 'UNIX integer sync date/time'
      ),
    ),
    'indexes' => array(
      'chado_feature_idx1' => array('feature_id')
    ),
    'unique keys' => array(
      'chado_feature_uq1' => array('nid', 'vid'),
      'chado_feature_uq2' => array('vid')
    ),
    'primary key' => array('nid'),
  );

  return $schema;
};

/**
 * Creates a materialized view that stores the type & number of features per organism
 *
 * @ingroup tripal_feature
 */
function tripal_feature_add_organism_count_mview() {
  $view_name = 'organism_feature_count';
  $comment = 'Stores the type and number of features per organism';

  $schema = array(
    'description' => $comment,
    'table' => $view_name,
    'fields' => array(
      'organism_id' => array(
        'type' => 'int',
        'not null' => TRUE,
      ),
      'genus' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
      ),
      'species' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
      ),
      'common_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => FALSE,
      ),
      'num_features' => array(
        'type' => 'int',
        'not null' => TRUE,
      ),
      'cvterm_id' => array(
        'type' => 'int',
        'not null' => TRUE,
      ),
      'feature_type' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
      ),
    ),
    'indexes' => array(
      'organism_feature_count_idx1' => array('organism_id'),
      'organism_feature_count_idx2' => array('cvterm_id'),
      'organism_feature_count_idx3' => array('feature_type'),
    ),
  );

  $sql = "
    SELECT
        O.organism_id, O.genus, O.species, O.common_name,
        count(F.feature_id) as num_features,
        CVT.cvterm_id, CVT.name as feature_type
     FROM organism O
        INNER JOIN feature F  ON O.Organism_id = F.organism_id
        INNER JOIN cvterm CVT ON F.type_id     = CVT.cvterm_id
     GROUP BY
        O.Organism_id, O.genus, O.species, O.common_name, CVT.cvterm_id, CVT.name
  ";

  tripal_add_mview($view_name, 'tripal_feature', $schema, $sql, $comment);
}