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Merge pull request #1 from misol/db-search-operator

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Db search operator
This commit is contained in:
Min-Soo Kim 2020-12-23 20:51:26 +09:00 • committed by GitHub
commit bc9408b0f5
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1 changed files with 102 additions and 18 deletions
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120
common/framework/parsers/dbquery/variablebase.php
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@ -237,24 +237,9 @@ class VariableBase
}
break;
case 'search':
$keywords = preg_split('/[\s,]+/', $value, 10, \PREG_SPLIT_NO_EMPTY);
$conditions = array();
$placeholders = implode(', ', array_fill(0, count($keywords), '?'));
foreach ($keywords as $item)
{
if (substr($item, 0, 1) === '-')
{
$conditions[] = sprintf('%s NOT LIKE ?', $column);
$item = substr($item, 1);
}
else
{
$conditions[] = sprintf('%s LIKE ?', $column);
}
$params[] = '%' . str_replace(['\\', '_', '%'], ['\\\\', '\_', '\%'], $item) . '%';
}
$conditions = implode(' AND ', $conditions);
$where = count($keywords) === 1 ? $conditions : "($conditions)";
$parsed_keywords = $this->_parseSearchKeywords($column, $value);
$where = $parsed_keywords[0];
$params = array_merge($params, $parsed_keywords[1]);
break;
case 'plus':
$where = sprintf('%s = %s + %s', $column, $column, $is_expression ? $value : '?');
@ -444,4 +429,103 @@ class VariableBase
throw new \Rhymix\Framework\Exceptions\QueryError('Variable ' . $this->var . ' for column ' . $column . ' must contain no more than ' . $this->minlength . ' characters');
}
}
/**
* Parse the search text.
*
* @param string $column
* @param string $value
* @return array
*/
protected function _parseSearchKeywords($column, $value)
{
// Initialze the return values.
$where = '';
$params = array();
// flag to mark transformed quotation mark.
$escaped_quot = false;
// parse the value (text);
if (strpos ($value, '"') !== false)
{
$escaped_quot = true;
$value = str_replace('"', '"', $value);
}
$keywords = preg_split('/(\([^\)]*\))|("[^"]*")|[\s,]+/', trim($value), 10, \PREG_SPLIT_NO_EMPTY | \PREG_SPLIT_DELIM_CAPTURE);
$conditions = array();
$operators = array('AND', 'OR', '|');
// loop the parsed keywords or operators
foreach ($keywords as $item)
{
// treat parenthesis
if (strlen($item) > 2 && substr($item, 0, 1) === '(' && substr($item, -1) === ')')
{
$parsed_keywords = $this->_parseSearchKeywords($column, substr($item, 1, -1));
$conditions[] = "(". $parsed_keywords[0] . ")";
$conditions[] = 'AND';
$params = array_merge($params, $parsed_keywords[1]);
continue;
}
// trim quotation mark
if (strlen($item) > 2 && (substr($item, 0, 1) === substr($item, -1)) && substr($item, -1) === '"')
{
$item = substr($item, 1, -1);
}
elseif (strlen($item) > 3 && (substr($item, 0, 1) === '-') && (substr($item, 1, 1) === substr($item, -1)) && substr($item, -1) === '"')
{
$item = '-' . substr($item, 2, -1);
}
// pass blank text
if (trim($item) === "")
{
continue;
}
if($escaped_quot === true)
{
$value = str_replace('"', '"', $value);
$escaped_quot = false;
}
// process 'AND' or 'OR' operator
if (in_array($item, $operators))
{
if ($item === '|')
{
$item = 'OR';
}
// remove the last point (would be an operator)
$last_condition = array_pop($conditions);
// the last condition might not be an operator.
if (!in_array($last_condition, $operators))
{
$conditions[] = $last_condition;
}
$conditions[] = sprintf('%s', $item);
}
else
{
if (substr($item, 0, 1) === '-')
{
$conditions[] = sprintf('%s NOT LIKE ?', $column);
$item = substr($item, 1);
}
else
{
$conditions[] = sprintf('%s LIKE ?', $column);
}
$params[] = '%' . str_replace(['\\', '_', '%'], ['\\\\', '\_', '\%'], $item) . '%';
// if there is no operator, assume 'AND'
$conditions[] = 'AND';
}
}
// remove the last point (would be an operator)
array_pop($conditions);
$conditions = implode(' ', $conditions);
$where = count($keywords) === 1 ? $conditions : "($conditions)";
return [$where, $params];
}
}