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<?php |
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/** |
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* Created by PhpStorm. |
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* User: hooklife |
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* Date: 2019/3/19 |
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* Time: 10:18 AM |
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*/ |
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namespace Hoooklife\DynamodbPodm; |
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class ComparisonOperator |
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{ |
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const EQ = 'EQ'; |
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const GT = 'GT'; |
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const GE = 'GE'; |
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const LT = 'LT'; |
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const LE = 'LE'; |
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const IN = 'IN'; |
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const NE = 'NE'; |
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const BEGINS_WITH = 'BEGINS_WITH'; |
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const BETWEEN = 'BETWEEN'; |
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const NOT_CONTAINS = 'NOT_CONTAINS'; |
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const CONTAINS = 'CONTAINS'; |
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const NULL = 'NULL'; |
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const NOT_NULL = 'NOT_NULL'; |
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public static function getOperatorMapping() |
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{ |
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return [ |
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'=' => static::EQ, |
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'>' => static::GT, |
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'>=' => static::GE, |
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'<' => static::LT, |
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'<=' => static::LE, |
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'in' => static::IN, |
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'!=' => static::NE, |
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'begins_with' => static::BEGINS_WITH, |
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'between' => static::BETWEEN, |
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'not_contains' => static::NOT_CONTAINS, |
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'contains' => static::CONTAINS, |
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'null' => static::NULL, |
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'not_null' => static::NOT_NULL, |
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]; |
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} |
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public static function getSupportedOperators() |
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{ |
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return array_keys(static::getOperatorMapping()); |
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} |
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public static function isValidOperator($operator) |
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{ |
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$operator = strtolower($operator); |
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$mapping = static::getOperatorMapping(); |
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return isset($mapping[$operator]); |
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} |
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public static function getDynamoDbOperator($operator) |
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{ |
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$mapping = static::getOperatorMapping(); |
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$operator = strtolower($operator); |
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return $mapping[$operator]; |
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} |
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public static function getQuerySupportedOperators($isRangeKey = false) |
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{ |
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if ($isRangeKey) { |
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return [ |
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static::EQ, |
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static::LE, |
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static::LT, |
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static::GE, |
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static::GT, |
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static::BEGINS_WITH, |
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static::BETWEEN, |
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]; |
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} |
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return [static::EQ]; |
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} |
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public static function isValidQueryOperator($operator, $isRangeKey = false) |
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{ |
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$dynamoDbOperator = static::getDynamoDbOperator($operator); |
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return static::isValidQueryDynamoDbOperator($dynamoDbOperator, $isRangeKey); |
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} |
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public static function isValidQueryDynamoDbOperator($dynamoDbOperator, $isRangeKey = false) |
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{ |
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return in_array($dynamoDbOperator, static::getQuerySupportedOperators($isRangeKey)); |
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} |
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public static function is($op, $dynamoDbOperator) |
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{ |
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$mapping = static::getOperatorMapping(); |
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return $mapping[strtolower($op)] === $dynamoDbOperator; |
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} |
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} |
hooklife /
DynamoDBODM
