89 lines
2.4 KiB
PHP
89 lines
2.4 KiB
PHP
<?php
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// IDbResult.php
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// Created: 2021-05-02
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// Updated: 2022-02-16
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namespace Index\Data;
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use Index\AString;
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use Index\ICloseable;
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use Index\WString;
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use Index\IO\Stream;
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/**
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* Represents a database result set.
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*/
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interface IDbResult extends ICloseable {
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/**
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* Fetches the next result set.
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*
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* @return bool true if the result set was loaded, false if no more results are available.
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*/
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function next(): bool;
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/**
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* Checks if a given index has a NULL value.
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*
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* @param int|string $index Target index.
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* @return bool true if the value is null, false if not.
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*/
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function isNull(int|string $index): bool;
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/**
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* Gets the value from the target index without any additional casting.
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*
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* @param int|string $index Target index.
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* @return mixed Target value.
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*/
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function getValue(int|string $index): mixed;
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/**
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* Gets the value from the target index cast as a native string.
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*
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* @param int|string $index Target index.
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* @return string Returns a string of the value.
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*/
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function getString(int|string $index): string;
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/**
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* Gets the value from the target index cast as an ASCII string.
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*
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* @param int|string $index Target index.
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* @return AString Returns an AString of the value.
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*/
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function getAString(int|string $index): AString;
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/**
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* Gets the value from the target index cast as a multi-byte string.
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*
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* @param int|string $index Target index.
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* @param string $encoding Encoding of the string.
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* @return WString Returns an WString of the value.
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*/
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function getWString(int|string $index, string $encoding): WString;
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/**
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* Gets the value from the target index cast as an integer.
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*
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* @param int|string $index Target index.
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* @return int Returns the value cast to an integer.
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*/
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function getInteger(int|string $index): int;
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/**
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* Gets the value from the target index cast as a floating point number.
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*
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* @param int|string $index Target index.
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* @return float Returns the value cast to a floating point number.
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*/
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function getFloat(int|string $index): float;
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/**
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* Gets the value from the target index as a Stream.
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*
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* @param int|string $index Target index.
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* @return ?Stream A Stream if data is available, null if not.
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*/
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function getStream(int|string $index): ?Stream;
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}
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