silverstripe-fulltextsearch/code/solr/SolrIndex.php

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<?php
Solr::include_client_api();
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abstract class SolrIndex extends SearchIndex
{
public static $fulltextTypeMap = array(
'*' => 'text',
'HTMLVarchar' => 'htmltext',
'HTMLText' => 'htmltext'
);
public static $filterTypeMap = array(
'*' => 'string',
'Boolean' => 'boolean',
'Date' => 'tdate',
'SSDatetime' => 'tdate',
'SS_Datetime' => 'tdate',
'ForeignKey' => 'tint',
'Int' => 'tint',
'Float' => 'tfloat',
'Double' => 'tdouble'
);
public static $sortTypeMap = array();
protected $analyzerFields = array();
protected $copyFields = array();
protected $extrasPath = null;
protected $templatesPath = null;
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/**
* List of boosted fields
*
* @var array
*/
protected $boostedFields = array();
/**
* Name of default field
*
* @var string
* @config
*/
private static $default_field = '_text';
/**
* List of copy fields all fulltext fields should be copied into.
* This will fallback to default_field if not specified
*
* @var array
*/
private static $copy_fields = array();
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/**
* @return String Absolute path to the folder containing
* templates which are used for generating the schema and field definitions.
*/
public function getTemplatesPath()
{
$globalOptions = Solr::solr_options();
return $this->templatesPath ? $this->templatesPath : $globalOptions['templatespath'];
}
/**
* @return String Absolute path to the configuration default files,
* e.g. solrconfig.xml.
*/
public function getExtrasPath()
{
$globalOptions = Solr::solr_options();
return $this->extrasPath ? $this->extrasPath : $globalOptions['extraspath'];
}
public function generateSchema()
{
return $this->renderWith($this->getTemplatesPath() . '/schema.ss');
}
public function getIndexName()
{
return get_class($this);
}
public function getTypes()
{
return $this->renderWith($this->getTemplatesPath() . '/types.ss');
}
/**
* Index-time analyzer which is applied to a specific field.
* Can be used to remove HTML tags, apply stemming, etc.
*
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* @see http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#solr.WhitespaceTokenizerFactory
*
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* @param String $field
* @param String $type
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* @param Array $params Parameters for the analyzer, usually at least a "class"
*/
public function addAnalyzer($field, $type, $params)
{
$fullFields = $this->fieldData($field);
if ($fullFields) {
foreach ($fullFields as $fullField => $spec) {
if (!isset($this->analyzerFields[$fullField])) {
$this->analyzerFields[$fullField] = array();
}
$this->analyzerFields[$fullField][$type] = $params;
}
}
}
/**
* Get the default text field, normally '_text'
*
* @return string
*/
public function getDefaultField()
{
return $this->config()->default_field;
}
/**
* Get list of fields each text field should be copied into.
* This will fallback to the default field if omitted.
*
* @return array
*/
protected function getCopyDestinations()
{
$copyFields = $this->config()->copy_fields;
if ($copyFields) {
return $copyFields;
}
// Fallback to default field
$df = $this->getDefaultField();
return array($df);
}
public function getFieldDefinitions()
{
$xml = array();
$stored = $this->getStoredDefault();
$xml[] = "";
// Add the hardcoded field definitions
$xml[] = "<field name='_documentid' type='string' indexed='true' stored='true' required='true' />";
$xml[] = "<field name='ID' type='tint' indexed='true' stored='true' required='true' />";
$xml[] = "<field name='ClassName' type='string' indexed='true' stored='true' required='true' />";
$xml[] = "<field name='ClassHierarchy' type='string' indexed='true' stored='true' required='true' multiValued='true' />";
// Add the fulltext collation field
$df = $this->getDefaultField();
$xml[] = "<field name='{$df}' type='htmltext' indexed='true' stored='{$stored}' multiValued='true' />" ;
// Add the user-specified fields
foreach ($this->fulltextFields as $name => $field) {
$xml[] = $this->getFieldDefinition($name, $field, self::$fulltextTypeMap);
}
foreach ($this->filterFields as $name => $field) {
if ($field['fullfield'] == 'ID' || $field['fullfield'] == 'ClassName') {
continue;
}
$xml[] = $this->getFieldDefinition($name, $field);
}
foreach ($this->sortFields as $name => $field) {
if ($field['fullfield'] == 'ID' || $field['fullfield'] == 'ClassName') {
continue;
}
$xml[] = $this->getFieldDefinition($name, $field);
}
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return implode("\n\t\t", $xml);
}
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/**
* Extract first suggestion text from collated values
*
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* @param mixed $collation
* @return string
*/
protected function getCollatedSuggestion($collation = '')
{
if (is_string($collation)) {
return $collation;
}
if (is_object($collation)) {
if (isset($collation->misspellingsAndCorrections)) {
foreach ($collation->misspellingsAndCorrections as $key => $value) {
return $value;
}
}
}
return '';
}
/**
* Extract a human friendly spelling suggestion from a Solr spellcheck collation string.
* @param String $collation
* @return String
*/
protected function getNiceSuggestion($collation = '')
{
$collationParts = explode(' ', $collation);
// Remove advanced query params from the beginning of each collation part.
foreach ($collationParts as $key => &$part) {
$part = ltrim($part, '+');
}
return implode(' ', $collationParts);
}
/**
* Extract a query string from a Solr spellcheck collation string.
* Useful for constructing 'Did you mean?' links, for example:
* <a href="http://example.com/search?q=$SuggestionQueryString">$SuggestionNice</a>
* @param String $collation
* @return String
*/
protected function getSuggestionQueryString($collation = '')
{
return str_replace(' ', '+', $this->getNiceSuggestion($collation));
}
/**
* Add a field that should be stored
*
* @param string $field The field to add
* @param string $forceType The type to force this field as (required in some cases, when not
* detectable from metadata)
* @param array $extraOptions Dependent on search implementation
*/
public function addStoredField($field, $forceType = null, $extraOptions = array())
{
$options = array_merge($extraOptions, array('stored' => 'true'));
$this->addFulltextField($field, $forceType, $options);
}
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/**
* Add a fulltext field with a boosted value
*
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* @param string $field The field to add
* @param string $forceType The type to force this field as (required in some cases, when not
* detectable from metadata)
* @param array $extraOptions Dependent on search implementation
* @param float $boost Numeric boosting value (defaults to 2)
*/
public function addBoostedField($field, $forceType = null, $extraOptions = array(), $boost = 2)
{
$options = array_merge($extraOptions, array('boost' => $boost));
$this->addFulltextField($field, $forceType, $options);
}
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public function fieldData($field, $forceType = null, $extraOptions = array())
{
// Ensure that 'boost' is recorded here without being captured by solr
$boost = null;
if (array_key_exists('boost', $extraOptions)) {
$boost = $extraOptions['boost'];
unset($extraOptions['boost']);
}
$data = parent::fieldData($field, $forceType, $extraOptions);
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// Boost all fields with this name
if (isset($boost)) {
foreach ($data as $fieldName => $fieldInfo) {
$this->boostedFields[$fieldName] = $boost;
}
}
return $data;
}
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/**
* Set the default boosting level for a specific field.
* Will control the default value for qf param (Query Fields), but will not
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* override a query-specific value.
*
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* Fields must be added before having a field boosting specified
*
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* @param string $field Full field key (Model_Field)
* @param float|null $level Numeric boosting value. Set to null to clear boost
*/
public function setFieldBoosting($field, $level)
{
if (!isset($this->fulltextFields[$field])) {
throw new InvalidArgumentException("No fulltext field $field exists on ".$this->getIndexName());
}
if ($level === null) {
unset($this->boostedFields[$field]);
} else {
$this->boostedFields[$field] = $level;
}
}
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/**
* Get all boosted fields
*
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* @return array
*/
public function getBoostedFields()
{
return $this->boostedFields;
}
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/**
* Determine the best default value for the 'qf' parameter
*
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* @return array|null List of query fields, or null if not specified
*/
public function getQueryFields()
{
// Not necessary to specify this unless boosting
if (empty($this->boostedFields)) {
return null;
}
$queryFields = array();
foreach ($this->boostedFields as $fieldName => $boost) {
$queryFields[] = $fieldName . '^' . $boost;
}
// If any fields are queried, we must always include the default field, otherwise it will be excluded
$df = $this->getDefaultField();
if ($queryFields && !isset($this->boostedFields[$df])) {
$queryFields[] = $df;
}
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return $queryFields;
}
/**
* Gets the default 'stored' value for fields in this index
*
* @return string A default value for the 'stored' field option, either 'true' or 'false'
*/
protected function getStoredDefault()
{
return Director::isDev() ? 'true' : 'false';
}
/**
* @param String $name
* @param Array $spec
* @param Array $typeMap
* @return String XML
*/
protected function getFieldDefinition($name, $spec, $typeMap = null)
{
if (!$typeMap) {
$typeMap = self::$filterTypeMap;
}
$multiValued = (isset($spec['multi_valued']) && $spec['multi_valued']) ? "true" : '';
$type = isset($typeMap[$spec['type']]) ? $typeMap[$spec['type']] : $typeMap['*'];
$analyzerXml = '';
if (isset($this->analyzerFields[$name])) {
foreach ($this->analyzerFields[$name] as $analyzerType => $analyzerParams) {
$analyzerXml .= $this->toXmlTag($analyzerType, $analyzerParams);
}
}
$fieldParams = array_merge(
array(
'name' => $name,
'type' => $type,
'indexed' => 'true',
'stored' => $this->getStoredDefault(),
'multiValued' => $multiValued
),
isset($spec['extra_options']) ? $spec['extra_options'] : array()
);
return $this->toXmlTag(
"field",
$fieldParams,
$analyzerXml ? "<analyzer>$analyzerXml</analyzer>" : null
);
}
/**
* Convert definition to XML tag
*
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* @param String $tag
* @param String $attrs Map of attributes
* @param String $content Inner content
* @return String XML tag
*/
protected function toXmlTag($tag, $attrs, $content = null)
{
$xml = "<$tag ";
if ($attrs) {
$attrStrs = array();
foreach ($attrs as $attrName => $attrVal) {
$attrStrs[] = "$attrName='$attrVal'";
}
$xml .= $attrStrs ? implode(' ', $attrStrs) : '';
}
$xml .= $content ? ">$content</$tag>" : '/>';
return $xml;
}
/**
* @param String $source Composite field name (<class>_<fieldname>)
* @param String $dest
*/
public function addCopyField($source, $dest, $extraOptions = array())
{
if (!isset($this->copyFields[$source])) {
$this->copyFields[$source] = array();
}
$this->copyFields[$source][] = array_merge(
array('source' => $source, 'dest' => $dest),
$extraOptions
);
}
/**
* Generate XML for copy field definitions
*
* @return string
*/
public function getCopyFieldDefinitions()
{
$xml = array();
// Default copy fields
foreach ($this->getCopyDestinations() as $copyTo) {
foreach ($this->fulltextFields as $name => $field) {
$xml[] = "<copyField source='{$name}' dest='{$copyTo}' />";
}
}
// Explicit copy fields
foreach ($this->copyFields as $source => $fields) {
foreach ($fields as $fieldAttrs) {
$xml[] = $this->toXmlTag('copyField', $fieldAttrs);
}
}
return implode("\n\t", $xml);
}
/**
* Determine if the given object is one of the given type
*
* @param string $class
* @param array|string $base Class or list of base classes
* @return bool
*/
protected function classIs($class, $base) {
if(is_array($base)) {
foreach($base as $nextBase) {
if($this->classIs($class, $nextBase)) {
return true;
}
}
return false;
}
// Check single origin
return $class === $base || is_subclass_of($class, $base);
}
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protected function _addField($doc, $object, $field)
{
$class = get_class($object);
if(!$this->classIs($class, $field['origin'])) {
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return;
}
$value = $this->_getFieldValue($object, $field);
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$type = isset(self::$filterTypeMap[$field['type']]) ? self::$filterTypeMap[$field['type']] : self::$filterTypeMap['*'];
if (is_array($value)) {
foreach ($value as $sub) {
/* Solr requires dates in the form 1995-12-31T23:59:59Z */
if ($type == 'tdate') {
if (!$sub) {
continue;
}
$sub = gmdate('Y-m-d\TH:i:s\Z', strtotime($sub));
}
/* Solr requires numbers to be valid if presented, not just empty */
if (($type == 'tint' || $type == 'tfloat' || $type == 'tdouble') && !is_numeric($sub)) {
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continue;
}
$doc->addField($field['name'], $sub);
}
} else {
/* Solr requires dates in the form 1995-12-31T23:59:59Z */
if ($type == 'tdate') {
if (!$value) {
return;
}
$value = gmdate('Y-m-d\TH:i:s\Z', strtotime($value));
}
/* Solr requires numbers to be valid if presented, not just empty */
if (($type == 'tint' || $type == 'tfloat' || $type == 'tdouble') && !is_numeric($value)) {
return;
}
$doc->setField($field['name'], $value);
}
}
protected function _addAs($object, $base, $options)
{
$includeSubs = $options['include_children'];
$doc = new Apache_Solr_Document();
// Always present fields
$doc->setField('_documentid', $this->getDocumentID($object, $base, $includeSubs));
$doc->setField('ID', $object->ID);
$doc->setField('ClassName', $object->ClassName);
foreach (SearchIntrospection::hierarchy(get_class($object), false) as $class) {
$doc->addField('ClassHierarchy', $class);
}
// Add the user-specified fields
foreach ($this->getFieldsIterator() as $name => $field) {
if ($field['base'] === $base || (is_array($field['base']) && in_array($base, $field['base']))) {
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$this->_addField($doc, $object, $field);
}
}
try {
$this->getService()->addDocument($doc);
} catch (Exception $e) {
static::warn($e);
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return false;
}
return $doc;
}
public function add($object)
{
$class = get_class($object);
$docs = array();
foreach ($this->getClasses() as $searchclass => $options) {
if ($searchclass == $class || ($options['include_children'] && is_subclass_of($class, $searchclass))) {
$base = ClassInfo::baseDataClass($searchclass);
$docs[] = $this->_addAs($object, $base, $options);
}
}
return $docs;
}
public function canAdd($class)
{
foreach ($this->classes as $searchclass => $options) {
if ($searchclass == $class || ($options['include_children'] && is_subclass_of($class, $searchclass))) {
return true;
}
}
return false;
}
public function delete($base, $id, $state)
{
$documentID = $this->getDocumentIDForState($base, $id, $state);
try {
$this->getService()->deleteById($documentID);
} catch (Exception $e) {
static::warn($e);
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return false;
}
}
/**
* Clear all records which do not match the given classname whitelist.
*
* Can also be used to trim an index when reducing to a narrower set of classes.
*
* Ignores current state / variant.
*
* @param array $classes List of non-obsolete classes in the same format as SolrIndex::getClasses()
* @return bool Flag if successful
*/
public function clearObsoleteClasses($classes)
{
if (empty($classes)) {
return false;
}
// Delete all records which do not match the necessary classname rules
$conditions = array();
foreach ($classes as $class => $options) {
if ($options['include_children']) {
$conditions[] = "ClassHierarchy:{$class}";
} else {
$conditions[] = "ClassName:{$class}";
}
}
// Delete records which don't match any of these conditions in this index
$deleteQuery = "-(" . implode(' ', $conditions) . ")";
$this
->getService()
->deleteByQuery($deleteQuery);
return true;
}
public function commit()
{
try {
$this->getService()->commit(false, false, false);
} catch (Exception $e) {
static::warn($e);
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return false;
}
}
/**
* @param SearchQuery $query
* @param integer $offset
* @param integer $limit
* @param array $params Extra request parameters passed through to Solr
* @return ArrayData Map with the following keys:
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* - 'Matches': ArrayList of the matched object instances
*/
public function search(SearchQuery $query, $offset = -1, $limit = -1, $params = array())
{
$service = $this->getService();
$searchClass = count($query->classes) == 1
? $query->classes[0]['class']
: null;
SearchVariant::with($searchClass)
->call('alterQuery', $query, $this);
$q = array(); // Query
$fq = array(); // Filter query
$qf = array(); // Query fields
$hlq = array(); // Highlight query
// Build the search itself
$q = $this->getQueryComponent($query, $hlq);
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// If using boosting, set the clean term separately for highlighting.
// See https://issues.apache.org/jira/browse/SOLR-2632
if (array_key_exists('hl', $params) && !array_key_exists('hl.q', $params)) {
$params['hl.q'] = implode(' ', $hlq);
}
// Filter by class if requested
$classq = array();
foreach ($query->classes as $class) {
if (!empty($class['includeSubclasses'])) {
$classq[] = 'ClassHierarchy:'.$class['class'];
} else {
$classq[] = 'ClassName:'.$class['class'];
}
}
if ($classq) {
$fq[] = '+('.implode(' ', $classq).')';
}
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// Filter by filters
$fq = array_merge($fq, $this->getFiltersComponent($query));
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// Prepare query fields unless specified explicitly
if (isset($params['qf'])) {
$qf = $params['qf'];
} else {
$qf = $this->getQueryFields();
}
if (is_array($qf)) {
$qf = implode(' ', $qf);
}
if ($qf) {
$params['qf'] = $qf;
}
if (!headers_sent() && !Director::isLive()) {
if ($q) {
header('X-Query: '.implode(' ', $q));
}
if ($fq) {
header('X-Filters: "'.implode('", "', $fq).'"');
}
if ($qf) {
header('X-QueryFields: '.$qf);
}
}
if ($offset == -1) {
$offset = $query->start;
}
if ($limit == -1) {
$limit = $query->limit;
}
if ($limit == -1) {
$limit = SearchQuery::$default_page_size;
}
$params = array_merge($params, array('fq' => implode(' ', $fq)));
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$res = $service->search(
$q ? implode(' ', $q) : '*:*',
$offset,
$limit,
$params,
Apache_Solr_Service::METHOD_POST
);
$results = new ArrayList();
if ($res->getHttpStatus() >= 200 && $res->getHttpStatus() < 300) {
foreach ($res->response->docs as $doc) {
$result = DataObject::get_by_id($doc->ClassName, $doc->ID);
if ($result) {
$results->push($result);
// Add highlighting (optional)
$docId = $doc->_documentid;
if ($res->highlighting && $res->highlighting->$docId) {
// TODO Create decorator class for search results rather than adding arbitrary object properties
// TODO Allow specifying highlighted field, and lazy loading
// in case the search API needs another query (similar to SphinxSearchable->buildExcerpt()).
$combinedHighlights = array();
foreach ($res->highlighting->$docId as $field => $highlights) {
$combinedHighlights = array_merge($combinedHighlights, $highlights);
}
// Remove entity-encoded U+FFFD replacement character. It signifies non-displayable characters,
// and shows up as an encoding error in browsers.
$result->Excerpt = DBField::create_field(
'HTMLText',
str_replace(
'&#65533;',
'',
implode(' ... ', $combinedHighlights)
)
);
}
}
}
$numFound = $res->response->numFound;
} else {
$numFound = 0;
}
$ret = array();
$ret['Matches'] = new PaginatedList($results);
$ret['Matches']->setLimitItems(false);
// Tell PaginatedList how many results there are
$ret['Matches']->setTotalItems($numFound);
// Results for current page start at $offset
$ret['Matches']->setPageStart($offset);
// Results per page
$ret['Matches']->setPageLength($limit);
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// Include spellcheck and suggestion data. Requires spellcheck=true in $params
if (isset($res->spellcheck)) {
// Expose all spellcheck data, for custom handling.
$ret['Spellcheck'] = $res->spellcheck;
// Suggestions. Requires spellcheck.collate=true in $params
if (isset($res->spellcheck->suggestions->collation)) {
// Extract string suggestion
$suggestion = $this->getCollatedSuggestion($res->spellcheck->suggestions->collation);
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// The collation, including advanced query params (e.g. +), suitable for making another query programmatically.
$ret['Suggestion'] = $suggestion;
// A human friendly version of the suggestion, suitable for 'Did you mean $SuggestionNice?' display.
$ret['SuggestionNice'] = $this->getNiceSuggestion($suggestion);
// A string suitable for appending to an href as a query string.
// For example <a href="http://example.com/search?q=$SuggestionQueryString">$SuggestionNice</a>
$ret['SuggestionQueryString'] = $this->getSuggestionQueryString($suggestion);
}
}
return new ArrayData($ret);
}
/**
* Get the query (q) component for this search
*
* @param SearchQuery $searchQuery
* @param array &$hlq Highlight query returned by reference
* @return array
*/
protected function getQueryComponent(SearchQuery $searchQuery, &$hlq = array())
{
$q = array();
foreach ($searchQuery->search as $search) {
$text = $search['text'];
preg_match_all('/"[^"]*"|\S+/', $text, $parts);
$fuzzy = $search['fuzzy'] ? '~' : '';
foreach ($parts[0] as $part) {
$fields = (isset($search['fields'])) ? $search['fields'] : array();
if (isset($search['boost'])) {
$fields = array_merge($fields, array_keys($search['boost']));
}
if ($fields) {
$searchq = array();
foreach ($fields as $field) {
$boost = (isset($search['boost'][$field])) ? '^' . $search['boost'][$field] : '';
$searchq[] = "{$field}:".$part.$fuzzy.$boost;
}
$q[] = '+('.implode(' OR ', $searchq).')';
} else {
$q[] = '+'.$part.$fuzzy;
}
$hlq[] = $part;
}
}
return $q;
}
/**
* Parse all require constraints for inclusion in a filter query
*
* @param SearchQuery $searchQuery
* @return array List of parsed string values for each require
*/
protected function getRequireFiltersComponent(SearchQuery $searchQuery)
{
$fq = array();
foreach ($searchQuery->require as $field => $values) {
$requireq = array();
foreach ($values as $value) {
if ($value === SearchQuery::$missing) {
$requireq[] = "(*:* -{$field}:[* TO *])";
} elseif ($value === SearchQuery::$present) {
$requireq[] = "{$field}:[* TO *]";
} elseif ($value instanceof SearchQuery_Range) {
$start = $value->start;
if ($start === null) {
$start = '*';
}
$end = $value->end;
if ($end === null) {
$end = '*';
}
$requireq[] = "$field:[$start TO $end]";
} else {
$requireq[] = $field.':"'.$value.'"';
}
}
$fq[] = '+('.implode(' ', $requireq).')';
}
return $fq;
}
/**
* Parse all exclude constraints for inclusion in a filter query
*
* @param SearchQuery $searchQuery
* @return array List of parsed string values for each exclusion
*/
protected function getExcludeFiltersComponent(SearchQuery $searchQuery)
{
$fq = array();
foreach ($searchQuery->exclude as $field => $values) {
$excludeq = array();
$missing = false;
foreach ($values as $value) {
if ($value === SearchQuery::$missing) {
$missing = true;
} elseif ($value === SearchQuery::$present) {
$excludeq[] = "{$field}:[* TO *]";
} elseif ($value instanceof SearchQuery_Range) {
$start = $value->start;
if ($start === null) {
$start = '*';
}
$end = $value->end;
if ($end === null) {
$end = '*';
}
$excludeq[] = "$field:[$start TO $end]";
} else {
$excludeq[] = $field.':"'.$value.'"';
}
}
$fq[] = ($missing ? "+{$field}:[* TO *] " : '') . '-('.implode(' ', $excludeq).')';
}
return $fq;
}
/**
* Get all filter conditions for this search
*
* @param SearchQuery $searchQuery
* @return array
*/
public function getFiltersComponent(SearchQuery $searchQuery)
{
return array_merge(
$this->getRequireFiltersComponent($searchQuery),
$this->getExcludeFiltersComponent($searchQuery)
);
}
protected $service;
/**
* @return SolrService
*/
public function getService()
{
if (!$this->service) {
$this->service = Solr::service(get_class($this));
}
return $this->service;
}
public function setService(SolrService $service)
{
$this->service = $service;
return $this;
}
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/**
* Upload config for this index to the given store
*
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* @param SolrConfigStore $store
*/
public function uploadConfig($store)
{
// Upload the config files for this index
$store->uploadString(
$this->getIndexName(),
'schema.xml',
(string)$this->generateSchema()
);
// Upload additional files
foreach (glob($this->getExtrasPath().'/*') as $file) {
if (is_file($file)) {
$store->uploadFile($this->getIndexName(), $file);
}
}
}
}