PhabricatorElasticsearchQueryBuilder.php
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	<?php

	class PhabricatorElasticsearchQueryBuilder {
	protected $name;
	protected $clauses = array();


	public function getClauses($termkey = null) {
	$clauses = $this->clauses;
	if ($termkey == null) {
	return $clauses;
	}
	if (isset($clauses[$termkey])) {
	return $clauses[$termkey];
	}
	return array();
	}

	public function getClauseCount($clausekey) {
	if (isset($this->clauses[$clausekey])) {
	return count($this->clauses[$clausekey]);
	} else {
	return 0;
	}
	}

	public function addExistsClause($field) {
	return $this->addClause('filter', array(
	'exists' => array(
	'field' => $field,
	),
	));
	}

	public function addTermsClause($field, $values) {
	return $this->addClause('filter', array(
	'terms' => array(
	$field => array_values($values),
	),
	));
	}

	public function addMustClause($clause) {
	return $this->addClause('must', $clause);
	}

	public function addFilterClause($clause) {
	return $this->addClause('filter', $clause);
	}

	public function addShouldClause($clause) {
	return $this->addClause('should', $clause);
	}

	public function addMustNotClause($clause) {
	return $this->addClause('must_not', $clause);
	}

	public function addClause($clause, $terms) {
	$this->clauses[$clause][] = $terms;
	return $this;
	}

	public function toArray() {
	$clauses = $this->getClauses();
	return $clauses;
	$cleaned = array();
	foreach ($clauses as $clause => $subclauses) {
	if (is_array($subclauses) && count($subclauses) == 1) {
	$cleaned[$clause] = array_shift($subclauses);
	} else {
	$cleaned[$clause] = $subclauses;
	}
	}
	return $cleaned;
	}

	}