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class ApacheSolrDocument in Apache Solr Search 6.3

Same name and namespace in other branches
  1. 8 Apache_Solr_Document.php \ApacheSolrDocument
  2. 7 Apache_Solr_Document.php \ApacheSolrDocument

Holds Key / Value pairs that represent a Solr Document along with any associated boost values. Field values can be accessed by direct dereferencing such as: <code> ... $document->title = 'Something'; echo $document->title; ... </code>

Additionally, the field values can be iterated with foreach

<code> foreach ($document as $fieldName => $fieldValue) { ... } </code>

Hierarchy

Expanded class hierarchy of ApacheSolrDocument

File

./Apache_Solr_Document.php, line 78

View source 
class ApacheSolrDocument implements IteratorAggregate {

  /**
   * Document boost value
   *
   * @var float
   */
  protected $_documentBoost = FALSE;

  /**
   * Document field values, indexed by name
   *
   * @var array
   */
  protected $_fields = array();

  /**
   * Document field boost values, indexed by name
   *
   * @var array array of floats
   */
  protected $_fieldBoosts = array();

  /**
   * Clear all boosts and fields from this document
   */
  public function clear() {
    $this->_documentBoost = FALSE;
    $this->_fields = array();
    $this->_fieldBoosts = array();
  }

  /**
   * Get current document boost
   *
   * @return mixed will be false for default, or else a float
   */
  public function getBoost() {
    return $this->_documentBoost;
  }

  /**
   * Set document boost factor
   *
   * @param mixed $boost Use false for default boost, else cast to float that should be > 0 or will be treated as false
   */
  public function setBoost($boost) {
    $boost = (double) $boost;
    if ($boost > 0.0) {
      $this->_documentBoost = $boost;
    }
    else {
      $this->_documentBoost = FALSE;
    }
  }

  /**
   * Add a value to a multi-valued field
   *
   * NOTE: the solr XML format allows you to specify boosts
   * PER value even though the underlying Lucene implementation
   * only allows a boost per field. To remedy this, the final
   * field boost value will be the product of all specified boosts
   * on field values - this is similar to SolrJ's functionality.
   *
   * <code>
   * $doc = new ApacheSolrDocument();
   *
   * $doc->addField('foo', 'bar', 2.0);
   * $doc->addField('foo', 'baz', 3.0);
   *
   * // resultant field boost will be 6!
   * echo $doc->getFieldBoost('foo');
   * </code>
   *
   * @param string $key
   * @param mixed $value
   * @param mixed $boost Use false for default boost, else cast to float that should be > 0 or will be treated as false
   */
  public function addField($key, $value, $boost = FALSE) {
    if (!isset($this->_fields[$key])) {

      // create holding array if this is the first value
      $this->_fields[$key] = array();
    }
    else {
      if (!is_array($this->_fields[$key])) {

        // move existing value into array if it is not already an array
        $this->_fields[$key] = array(
          $this->_fields[$key],
        );
      }
    }
    if ($this
      ->getFieldBoost($key) === FALSE) {

      // boost not already set, set it now
      $this
        ->setFieldBoost($key, $boost);
    }
    else {
      if ((double) $boost > 0.0) {

        // multiply passed boost with current field boost - similar to SolrJ implementation
        $this->_fieldBoosts[$key] *= (double) $boost;
      }
    }

    // add value to array
    $this->_fields[$key][] = $value;
  }

  /**
   * Handle the array manipulation for a multi-valued field
   *
   * @param string $key
   * @param string $value
   * @param mixed $boost Use false for default boost, else cast to float that should be > 0 or will be treated as false
   *
   * @deprecated Use addField(...) instead
   */
  public function setMultiValue($key, $value, $boost = FALSE) {
    $this
      ->addField($key, $value, $boost);
  }

  /**
   * Get field information
   *
   * @param string $key
   * @return mixed associative array of info if field exists, false otherwise
   */
  public function getField($key) {
    if (isset($this->_fields[$key])) {
      return array(
        'name' => $key,
        'value' => $this->_fields[$key],
        'boost' => $this
          ->getFieldBoost($key),
      );
    }
    return FALSE;
  }

  /**
   * Set a field value. Multi-valued fields should be set as arrays
   * or instead use the addField(...) function which will automatically
   * make sure the field is an array.
   *
   * @param string $key
   * @param mixed $value
   * @param mixed $boost Use false for default boost, else cast to float that should be > 0 or will be treated as false
   */
  public function setField($key, $value, $boost = FALSE) {
    $this->_fields[$key] = $value;
    $this
      ->setFieldBoost($key, $boost);
  }

  /**
   * Get the currently set field boost for a document field
   *
   * @param string $key
   * @return float currently set field boost, false if one is not set
   */
  public function getFieldBoost($key) {
    return isset($this->_fieldBoosts[$key]) ? $this->_fieldBoosts[$key] : FALSE;
  }

  /**
   * Set the field boost for a document field
   *
   * @param string $key field name for the boost
   * @param mixed $boost Use false for default boost, else cast to float that should be > 0 or will be treated as false
   */
  public function setFieldBoost($key, $boost) {
    $boost = (double) $boost;
    if ($boost > 0.0) {
      $this->_fieldBoosts[$key] = $boost;
    }
    else {
      $this->_fieldBoosts[$key] = FALSE;
    }
  }

  /**
   * Return current field boosts, indexed by field name
   *
   * @return array
   */
  public function getFieldBoosts() {
    return $this->_fieldBoosts;
  }

  /**
   * Get the names of all fields in this document
   *
   * @return array
   */
  public function getFieldNames() {
    return array_keys($this->_fields);
  }

  /**
   * Get the values of all fields in this document
   *
   * @return array
   */
  public function getFieldValues() {
    return array_values($this->_fields);
  }

  /**
   * IteratorAggregate implementation function. Allows usage:
   *
   * <code>
   * foreach ($document as $key => $value)
   * {
   *   ...
   * }
   * </code>
   */
  public function getIterator() {
    $arrayObject = new ArrayObject($this->_fields);
    return $arrayObject
      ->getIterator();
  }

  /**
   * Magic get for field values
   *
   * @param string $key
   * @return mixed
   */
  public function __get($key) {
    return $this->_fields[$key];
  }

  /**
   * Magic set for field values. Multi-valued fields should be set as arrays
   * or instead use the addField(...) function which will automatically
   * make sure the field is an array.
   *
   * @param string $key
   * @param mixed $value
   */
  public function __set($key, $value) {
    $this
      ->setField($key, $value);
  }

  /**
   * Magic isset for fields values.  Do not call directly. Allows usage:
   *
   * <code>
   * isset($document->some_field);
   * </code>
   *
   * @param string $key
   * @return boolean
   */
  public function __isset($key) {
    return isset($this->_fields[$key]);
  }

  /**
   * Magic unset for field values. Do not call directly. Allows usage:
   *
   * <code>
   * unset($document->some_field);
   * </code>
   *
   * @param string $key
   */
  public function __unset($key) {
    unset($this->_fields[$key]);
    unset($this->_fieldBoosts[$key]);
  }

  /**
   * Create an XML fragment from a ApacheSolrDocument instance appropriate for use inside a Solr add call
   *
   * @return string
   */
  public static function documentToXml(ApacheSolrDocument $document) {
    $xml = '<doc';
    if ($document
      ->getBoost() !== FALSE) {
      $xml .= ' boost="' . $document
        ->getBoost() . '"';
    }
    $xml .= '>';
    foreach ($document as $key => $value) {
      $key = htmlspecialchars($key, ENT_QUOTES, 'UTF-8');
      $fieldBoost = $document
        ->getFieldBoost($key);
      if (is_array($value)) {
        foreach ($value as $multivalue) {
          $xml .= '<field name="' . $key . '"';
          if ($fieldBoost !== FALSE) {
            $xml .= ' boost="' . $fieldBoost . '"';

            // Only set the boost for the first field in the set
            $fieldBoost = FALSE;
          }
          $xml .= '>' . htmlspecialchars($multivalue, ENT_NOQUOTES, 'UTF-8') . '</field>';
        }
      }
      else {
        $xml .= '<field name="' . $key . '"';
        if ($fieldBoost !== FALSE) {
          $xml .= ' boost="' . $fieldBoost . '"';
        }
        $xml .= '>' . htmlspecialchars($value, ENT_NOQUOTES, 'UTF-8') . '</field>';
      }
    }
    $xml .= '</doc>';

    // Remove any control characters to avoid Solr XML parser exception
    return self::stripCtrlChars($xml);
  }

  /**
   * Replace control (non-printable) characters from string that are invalid to Solr's XML parser with a space.
   *
   * @param string $string
   * @return string
   */
  public static function stripCtrlChars($string) {

    // See:  http://w3.org/International/questions/qa-forms-utf-8.html
    // Printable utf-8 does not include any of these chars below x7F
    return preg_replace('@[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F]@', ' ', $string);
  }

}

Members

Namesort descending Modifiers Type Description Overrides
ApacheSolrDocument::$_documentBoost protected property Document boost value
ApacheSolrDocument::$_fieldBoosts protected property Document field boost values, indexed by name
ApacheSolrDocument::$_fields protected property Document field values, indexed by name
ApacheSolrDocument::addField public function Add a value to a multi-valued field
ApacheSolrDocument::clear public function Clear all boosts and fields from this document
ApacheSolrDocument::documentToXml public static function Create an XML fragment from a ApacheSolrDocument instance appropriate for use inside a Solr add call
ApacheSolrDocument::getBoost public function Get current document boost
ApacheSolrDocument::getField public function Get field information
ApacheSolrDocument::getFieldBoost public function Get the currently set field boost for a document field
ApacheSolrDocument::getFieldBoosts public function Return current field boosts, indexed by field name
ApacheSolrDocument::getFieldNames public function Get the names of all fields in this document
ApacheSolrDocument::getFieldValues public function Get the values of all fields in this document
ApacheSolrDocument::getIterator public function IteratorAggregate implementation function. Allows usage:
ApacheSolrDocument::setBoost public function Set document boost factor
ApacheSolrDocument::setField public function Set a field value. Multi-valued fields should be set as arrays or instead use the addField(...) function which will automatically make sure the field is an array.
ApacheSolrDocument::setFieldBoost public function Set the field boost for a document field
ApacheSolrDocument::setMultiValue Deprecated public function Handle the array manipulation for a multi-valued field
ApacheSolrDocument::stripCtrlChars public static function Replace control (non-printable) characters from string that are invalid to Solr's XML parser with a space.
ApacheSolrDocument::__get public function Magic get for field values
ApacheSolrDocument::__isset public function Magic isset for fields values. Do not call directly. Allows usage:
ApacheSolrDocument::__set public function Magic set for field values. Multi-valued fields should be set as arrays or instead use the addField(...) function which will automatically make sure the field is an array.
ApacheSolrDocument::__unset public function Magic unset for field values. Do not call directly. Allows usage: