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refactored elasticsearch Querybuilder build conditions

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This commit is contained in:
Carsten Brandt
2013-11-24 02:00:27 +01:00
parent f8b53197ac
commit 58b1538b39
3 changed files with 74 additions and 84 deletions
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6
framework/yii/db/QueryBuilder.php
View File

@ -863,12 +863,12 @@ class QueryBuilder extends \yii\base\Object
* describe the interval that column value should be in.
* @param array $params the binding parameters to be populated
* @return string the generated SQL expression
* @throws Exception if wrong number of operands have been given.
* @throws InvalidParamException if wrong number of operands have been given.
*/
public function buildBetweenCondition($operator, $operands, &$params)
{
if (!isset($operands[0], $operands[1], $operands[2])) {
throw new Exception("Operator '$operator' requires three operands.");
throw new InvalidParamException("Operator '$operator' requires three operands.");
}
list($column, $value1, $value2) = $operands;
@ -983,7 +983,7 @@ class QueryBuilder extends \yii\base\Object
public function buildLikeCondition($operator, $operands, &$params)
{
if (!isset($operands[0], $operands[1])) {
throw new Exception("Operator '$operator' requires two operands.");
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $values) = $operands;

4
framework/yii/elasticsearch/Command.php
View File

@ -60,7 +60,9 @@ class Command extends Component
try {
$response = $this->db->http()->post($this->createUrl($url, $options), null, $query)->send();
} catch(ClientErrorResponseException $e) {
throw new Exception("elasticsearch error:\n\n" . $query . "\n\n" . $e->getMessage() . $e->getResponse()->getBody(true), [], 0, $e);
throw new Exception("elasticsearch error:\n\n"
. $query . "\n\n" . $e->getMessage()
. print_r(Json::decode($e->getResponse()->getBody(true)), true), [], 0, $e);
}
return Json::decode($response->getBody(true))['hits'];
}

148
framework/yii/elasticsearch/QueryBuilder.php
View File

@ -55,8 +55,19 @@ class QueryBuilder extends \yii\base\Object
$parts['from'] = (int) $query->offset;
}
$this->buildCondition($parts, $query->where);
$this->buildOrderBy($parts, $query->orderBy);
$filters = empty($query->filter) ? [] : [$query->filter];
$whereFilter = $this->buildCondition($query->where);
if (!empty($whereFilter)) {
$filters[] = $whereFilter;
}
if (!empty($filters)) {
$parts['filter'] = count($filters) > 1 ? ['and' => $filters] : $filters[0];
}
$sort = $this->buildOrderBy($query->orderBy);
if (!empty($sort)) {
$parts['sort'] = $sort;
}
if (empty($parts['query'])) {
$parts['query'] = ["match_all" => (object)[]];
@ -75,12 +86,12 @@ class QueryBuilder extends \yii\base\Object
/**
* adds order by condition to the query
*/
public function buildOrderBy(&$query, $columns)
public function buildOrderBy($columns)
{
if (empty($columns)) {
return;
return [];
}
$orders = array();
$orders = [];
foreach ($columns as $name => $direction) {
// allow elasticsearch extended syntax as described in http://www.elasticsearch.org/guide/reference/api/search/sort/
if (is_array($direction)) {
@ -91,7 +102,7 @@ class QueryBuilder extends \yii\base\Object
$orders[] = array($name => ($direction === SORT_DESC ? 'desc' : 'asc'));
}
}
$query['sort'] = $orders;
return $orders;
}
/**
@ -102,121 +113,102 @@ class QueryBuilder extends \yii\base\Object
* @return string the generated SQL expression
* @throws \yii\db\Exception if the condition is in bad format
*/
public function buildCondition(&$query, $condition)
public function buildCondition($condition)
{
static $builders = array(
'AND' => 'buildAndCondition',
'OR' => 'buildAndCondition',
'BETWEEN' => 'buildBetweenCondition',
'NOT BETWEEN' => 'buildBetweenCondition',
'IN' => 'buildInCondition',
'NOT IN' => 'buildInCondition',
'LIKE' => 'buildLikeCondition',
'NOT LIKE' => 'buildLikeCondition',
'OR LIKE' => 'buildLikeCondition',
'OR NOT LIKE' => 'buildLikeCondition',
'and' => 'buildAndCondition',
'or' => 'buildAndCondition',
'between' => 'buildBetweenCondition',
'not between' => 'buildBetweenCondition',
'in' => 'buildInCondition',
'not in' => 'buildInCondition',
'like' => 'buildLikeCondition',
'not like' => 'buildLikeCondition',
'or like' => 'buildLikeCondition',
'or not like' => 'buildLikeCondition',
);
if (empty($condition)) {
return;
return [];
}
if (!is_array($condition)) {
throw new NotSupportedException('String conditions in where() are not supported by elasticsearch.');
}
if (isset($condition[0])) { // operator format: operator, operand 1, operand 2, ...
$operator = strtoupper($condition[0]);
$operator = strtolower($condition[0]);
if (isset($builders[$operator])) {
$method = $builders[$operator];
array_shift($condition);
$this->$method($query, $operator, $condition);
return $this->$method($operator, $condition);
} else {
throw new InvalidParamException('Found unknown operator in query: ' . $operator);
}
} else { // hash format: 'column1' => 'value1', 'column2' => 'value2', ...
$this->buildHashCondition($query, $condition);
return $this->buildHashCondition($condition);
}
}
private function buildHashCondition(&$query, $condition)
private function buildHashCondition($condition)
{
$parts = [];
foreach($condition as $attribute => $value) {
// ['query']['filteredQuery']
$query['filter']['bool']['must'][] = array(
'term' => array($attribute => $value),
);
}
return; // TODO more
$parts = array();
foreach ($condition as $column => $value) {
if (is_array($value)) { // IN condition
$parts[] = $this->buildInCondition('IN', array($column, $value), $params);
$parts[] = ['in' => [$attribute => $value]];
} else {
if ($value === null) {
$parts[] = "$column IS NULL"; // TODO null
} elseif ($value instanceof Expression) {
$parts[] = "$column=" . $value->expression;
foreach ($value->params as $n => $v) {
$params[$n] = $v;
}
$parts[] = ['missing' => ['field' => $attribute, 'existence' => true, 'null_value' => true]];
} else {
$phName = self::PARAM_PREFIX . count($params);
$parts[] = "$column=$phName";
$params[$phName] = $value;
$parts[] = ['term' => [$attribute => $value]];
}
}
}
return count($parts) === 1 ? $parts[0] : '(' . implode(') AND (', $parts) . ')';
return count($parts) === 1 ? $parts[0] : ['and' => $parts];
}
private function buildAndCondition($operator, $operands, &$params)
private function buildAndCondition($operator, $operands)
{
$parts = array();
$parts = [];
foreach ($operands as $operand) {
if (is_array($operand)) {
$operand = $this->buildCondition($operand, $params);
$operand = $this->buildCondition($operand);
}
if ($operand !== '') {
if (!empty($operand)) {
$parts[] = $operand;
}
}
if (!empty($parts)) {
return '(' . implode(") $operator (", $parts) . ')';
return [$operator => $parts];
} else {
return '';
return [];
}
}
private function buildBetweenCondition($operator, $operands, &$params)
private function buildBetweenCondition($operator, $operands)
{
if (!isset($operands[0], $operands[1], $operands[2])) {
throw new Exception("Operator '$operator' requires three operands.");
throw new InvalidParamException("Operator '$operator' requires three operands.");
}
list($column, $value1, $value2) = $operands;
if (strpos($column, '(') === false) {
$column = $this->db->quoteColumnName($column);
$filter = ['range' => [$column => ['gte' => $value1, 'lte' => $value2]]];
if ($operator == 'not between') {
$filter = ['not' => $filter];
}
$phName1 = self::PARAM_PREFIX . count($params);
$params[$phName1] = $value1;
$phName2 = self::PARAM_PREFIX . count($params);
$params[$phName2] = $value2;
return "$column $operator $phName1 AND $phName2";
return $filter;
}
private function buildInCondition($operator, $operands, &$params)
{
if (!isset($operands[0], $operands[1])) {
throw new Exception("Operator '$operator' requires two operands.");
throw new InvalidParamException("Operator '$operator' requires two operands.");
}
list($column, $values) = $operands;
$values = (array)$values;
if (empty($values) || $column === array()) {
return $operator === 'IN' ? '0=1' : '';
if (empty($values) || $column === []) {
return $operator === 'in' ? ['script' => ['script' => '0=1']] : [];
}
if (count($column) > 1) {
@ -224,37 +216,33 @@ class QueryBuilder extends \yii\base\Object
} elseif (is_array($column)) {
$column = reset($column);
}
$canBeNull = false;
foreach ($values as $i => $value) {
if (is_array($value)) {
$value = isset($value[$column]) ? $value[$column] : null;
$values[$i] = $value = isset($value[$column]) ? $value[$column] : null;
}
if ($value === null) {
$values[$i] = 'NULL';
} elseif ($value instanceof Expression) {
$values[$i] = $value->expression;
foreach ($value->params as $n => $v) {
$params[$n] = $v;
}
} else {
$phName = self::PARAM_PREFIX . count($params);
$params[$phName] = $value;
$values[$i] = $phName;
$canBeNull = true;
unset($values[$i]);
}
}
if (strpos($column, '(') === false) {
$column = $this->db->quoteColumnName($column);
}
if (count($values) > 1) {
return "$column $operator (" . implode(', ', $values) . ')';
if (empty($values) && $canBeNull) {
return ['missing' => ['field' => $column, 'existence' => true, 'null_value' => true]];
} else {
$operator = $operator === 'IN' ? '=' : '<>';
return "$column$operator{$values[0]}";
$filter = ['in' => [$column => $values]];
if ($canBeNull) {
$filter = ['or' => [$filter, ['missing' => ['field' => $column, 'existence' => true, 'null_value' => true]]]];
}
if ($operator == 'not in') {
$filter = ['not' => $filter];
}
return $filter;
}
}
protected function buildCompositeInCondition($operator, $columns, $values, &$params)
{
throw new NotSupportedException('composite in is not supported by elasticsearch.');
$vss = array();
foreach ($values as $value) {
$vs = array();