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<?php |
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/** |
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* This file contains the SodaDataset class |
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* |
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* @copyright 2015 Vladimir Jimenez |
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* @license https://github.com/allejo/PhpSoda/blob/master/LICENSE.md MIT |
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*/ |
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namespace allejo\Socrata; |
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use allejo\Socrata\Converters\Converter; |
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use allejo\Socrata\Exceptions\InvalidResourceException; |
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use allejo\Socrata\Utilities\StringUtilities; |
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use allejo\Socrata\Utilities\UrlQuery; |
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/** |
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* An object provided to interact with a Socrata dataset directly. Provides functionality for fetching the dataset, an |
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* individual row, or updating/replacing a dataset. |
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* |
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* @package allejo\Socrata |
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* @since 0.1.0 |
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*/ |
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class SodaDataset |
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{ |
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/** |
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* The client with all the authentication and configuration set |
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* |
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* @var SodaClient |
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*/ |
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private $sodaClient; |
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/** |
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* The object used to make URL jobs for common requests |
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* |
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* @var UrlQuery |
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*/ |
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private $urlQuery; |
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/** |
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* The 4x4 resource ID of a dataset |
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* @var string |
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*/ |
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private $resourceId; |
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/** |
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* The API version of the dataset being worked with |
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* |
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* @var int |
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*/ |
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private $apiVersion; |
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/** |
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* The API's cached metadata |
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* |
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* @var array |
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*/ |
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private $metadata; |
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/** |
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* Create an object for interacting with a Socrata dataset |
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* |
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* @param SodaClient $sodaClient The SodaClient with all of the authentication information and settings for access |
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* @param string $resourceID The 4x4 resource ID of the dataset that will be referenced |
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* |
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* @throws InvalidResourceException If the given resource ID does not match the pattern of a resource ID |
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* |
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* @since 0.1.0 |
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*/ |
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public function __construct ($sodaClient, $resourceID) |
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{ |
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StringUtilities::validateResourceID($resourceID); |
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if (!($sodaClient instanceof SodaClient)) |
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{ |
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throw new \InvalidArgumentException("The first variable is expected to be a SodaClient object"); |
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} |
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$this->apiVersion = 0; |
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$this->sodaClient = $sodaClient; |
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$this->resourceId = $resourceID; |
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$this->urlQuery = new UrlQuery($this->buildResourceUrl(), $this->sodaClient->getToken(), $this->sodaClient->getEmail(), $this->sodaClient->getPassword()); |
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$this->urlQuery->setOAuth2Token($this->sodaClient->getOAuth2Token()); |
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} |
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/** |
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* Get the API version this dataset is using |
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* |
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* @since 0.1.0 |
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* |
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* @return double The API version number |
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*/ |
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public function getApiVersion () |
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{ |
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// If we don't have the API version set, send a dummy query with limit 0 since we only care about the headers |
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if ($this->apiVersion == 0) |
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{ |
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$soql = new SoqlQuery(); |
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$soql->limit(0); |
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// When we fetch a dataset, the API version is stored |
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$this->getDataset($soql); |
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} |
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return $this->apiVersion; |
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} |
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/** |
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* Get the metadata of a dataset |
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* |
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* @param bool $forceFetch Set to true if the cached metadata for the dataset is outdata or needs to be refreshed |
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* |
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* @see SodaClient::enableAssociativeArrays() |
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* @see SodaClient::disableAssociativeArrays() |
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* |
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* @since 0.1.0 |
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* |
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* @return array The metadata as a PHP array. The array will contain associative arrays or stdClass objects from |
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* the decoded JSON received from the data set. |
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*/ |
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public function getMetadata ($forceFetch = false) |
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{ |
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if (empty($this->metadata) || $forceFetch) |
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{ |
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$metadataUrlQuery = new UrlQuery($this->buildViewUrl(), $this->sodaClient->getToken(), $this->sodaClient->getEmail(), $this->sodaClient->getPassword()); |
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$metadataUrlQuery->setOAuth2Token($this->sodaClient->getOAuth2Token()); |
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$this->metadata = $metadataUrlQuery->sendGet("", $this->sodaClient->associativeArrayEnabled()); |
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} |
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return $this->metadata; |
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} |
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/** |
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* Fetch a dataset based on a resource ID. |
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* |
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* @param string|SoqlQuery $filterOrSoqlQuery A simple filter or a SoqlQuery to filter the results |
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* |
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* @see SodaClient::enableAssociativeArrays() |
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* @see SodaClient::disableAssociativeArrays() |
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* |
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* @since 0.1.0 |
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* |
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* @return array The data set as a PHP array. The array will contain associative arrays or stdClass objects from |
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* the decoded JSON received from the data set. |
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*/ |
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public function getDataset ($filterOrSoqlQuery = "") |
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{ |
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$headers = array(); |
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if (!($filterOrSoqlQuery instanceof SoqlQuery) && StringUtilities::isNullOrEmpty($filterOrSoqlQuery)) |
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{ |
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$filterOrSoqlQuery = new SoqlQuery(); |
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} |
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$dataset = $this->urlQuery->sendGet($filterOrSoqlQuery, $this->sodaClient->associativeArrayEnabled(), $headers); |
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$this->setApiVersion($headers); |
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return $dataset; |
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} |
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/** |
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* Delete an individual row based on their row identifier. For deleting more than a single row, use an upsert |
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* instead. |
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* |
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* @param int|string $rowID The row identifier of the row to fetch; if no identifier is set for the dataset, the |
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* internal row identifier should be used |
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* |
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* @link http://dev.socrata.com/publishers/direct-row-manipulation.html#deleting-a-row Deleting a Row |
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* |
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* @see SodaClient::enableAssociativeArrays() |
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* @see SodaClient::disableAssociativeArrays() |
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* @see upsert() |
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* |
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* @since 0.1.2 |
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* |
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* @return mixed An object with information about the deletion. The array will contain associative arrays or |
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* stdClass objects from the decoded JSON received from the data set. |
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*/ |
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public function deleteRow ($rowID) |
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{ |
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return $this->individualRow($rowID, "delete"); |
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} |
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/** |
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* Fetch an individual row from a dataset. |
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* |
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* @param int|string $rowID The row identifier of the row to fetch; if no identifier is set for the dataset, the |
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* internal row identifier should be used |
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* |
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* @link http://dev.socrata.com/publishers/direct-row-manipulation.html#retrieving-an-individual-row Retrieving |
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* An Individual Row |
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* |
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* @see SodaClient::enableAssociativeArrays() |
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* @see SodaClient::disableAssociativeArrays() |
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* |
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* @since 0.1.2 |
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* |
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* @return array The data set as a PHP array. The array will contain associative arrays or stdClass objects from |
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* the decoded JSON received from the data set. |
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*/ |
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public function getRow ($rowID) |
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{ |
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return $this->individualRow($rowID, "get"); |
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} |
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/** |
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* Replace the entire dataset with the new payload provided |
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* |
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* Data will always be transmitted as JSON to Socrata even though different forms are accepted. In order to pass |
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* other forms of data, you must use a Converter class that has a `toJson()` method, such as the CsvConverter. |
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* |
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* @param array|Converter|JSON $payload The data that will be upserted to the Socrata dataset as a PHP array, an |
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* instance of a Converter child class, or a JSON string |
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* |
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* @link http://dev.socrata.com/publishers/replace.html Replacing a dataset with Replace |
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* |
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* @see Converter |
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* @see CsvConverter |
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* |
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* @since 0.1.0 |
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* |
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* @return mixed |
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*/ |
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public function replace ($payload) |
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{ |
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$upsertData = $this->handleJson($payload); |
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return $this->urlQuery->sendPut($upsertData, $this->sodaClient->associativeArrayEnabled()); |
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} |
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/** |
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* Create, update, and delete rows in a single operation, using their row identifiers. |
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* |
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* Data will always be transmitted as JSON to Socrata even though different forms are accepted. In order to pass |
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* other forms of data, you must use a Converter class that has a `toJson()` method, such as the CsvConverter. |
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* |
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* @param array|Converter|JSON $payload The data that will be upserted to the Socrata dataset as a PHP array, an |
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* instance of a Converter child class, or a JSON string |
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* |
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* @link http://dev.socrata.com/publishers/upsert.html Updating Rows in Bulk with Upsert |
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* |
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* @see Converter |
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* @see CsvConverter |
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* |
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* @since 0.1.0 |
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* |
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* @return mixed |
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*/ |
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public function upsert ($payload) |
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{ |
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$upsertData = $this->handleJson($payload); |
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return $this->urlQuery->sendPost($upsertData, $this->sodaClient->associativeArrayEnabled()); |
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} |
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/** |
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* Build the API URL that will be used to access the dataset |
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* |
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* @return string The apt API URL |
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*/ |
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private function buildResourceUrl () |
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{ |
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return $this->buildApiUrl("resource"); |
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} |
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/** |
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* Build the API URL that will be used to access the metadata for the dataset |
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* |
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* @return string The apt API URL |
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*/ |
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private function buildViewUrl () |
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{ |
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return $this->buildApiUrl("views"); |
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} |
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/** |
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* Build the URL that will be used to access the API for the respective action |
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* |
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* @param string $location The location of where to get information from |
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* @param string|null $identifier The part of the URL that will end with .json. This will either be the resource |
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* ID or it will be a row ID prepended with the resource ID |
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* |
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* @return string The API URL |
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*/ |
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private function buildApiUrl ($location, $identifier = NULL) |
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{ |
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if ($identifier === NULL) |
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{ |
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$identifier = $this->resourceId; |
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} |
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return sprintf("%s://%s/%s/%s.json", UrlQuery::DEFAULT_PROTOCOL, $this->sodaClient->getDomain(), $location, $identifier); |
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} |
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/** |
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* Handle different forms of data to be returned in JSON format so it can be sent to Socrata. |
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* |
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* Data will always be transmitted as JSON to Socrata even though different forms are accepted. |
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* |
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* @param array|Converter|JSON $payload The data that will be upserted to the Socrata dataset as a PHP array, an |
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* instance of a Converter child class, or a JSON string |
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* |
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* @return string A JSON encoded string available to be used for UrlQuery requsts |
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*/ |
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private function handleJson ($payload) |
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{ |
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$uploadData = $payload; |
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if (is_array($payload)) |
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{ |
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$uploadData = json_encode($payload); |
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} |
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else if ($payload instanceof Converter) |
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{ |
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$uploadData = $payload->toJson(); |
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} |
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else if (!StringUtilities::isJson($payload)) |
|
322
|
|
|
{ |
|
323
|
|
|
throw new \InvalidArgumentException("The given data is not valid JSON"); |
|
324
|
|
|
} |
|
325
|
|
|
|
|
326
|
|
|
return $uploadData; |
|
327
|
|
|
} |
|
328
|
|
|
|
|
329
|
|
|
/** |
|
330
|
|
|
* Interact with an individual row. Either to retrieve it or to delete it; both actions use the same API endpoint |
|
331
|
|
|
* with the exception of what type of request is sent. |
|
332
|
|
|
* |
|
333
|
|
|
* @param string $rowID The 4x4 resource ID of the dataset to work with |
|
334
|
|
|
* @param string $method Either `get` or `delete` |
|
335
|
|
|
* |
|
336
|
|
|
* @return mixed |
|
337
|
|
|
*/ |
|
338
|
|
|
private function individualRow ($rowID, $method) |
|
339
|
|
|
{ |
|
340
|
|
|
$headers = array(); |
|
341
|
|
|
|
|
342
|
|
|
// For a single row, the format is the `resourceID/rowID.json`, so we'll use that as the "location" of the Api URL |
|
343
|
|
|
$apiEndPoint = $this->buildApiUrl("resource", $this->resourceId . "/" . $rowID); |
|
344
|
|
|
|
|
345
|
|
|
$urlQuery = new UrlQuery($apiEndPoint, $this->sodaClient->getToken(), $this->sodaClient->getEmail(), $this->sodaClient->getPassword()); |
|
346
|
|
|
$urlQuery->setOAuth2Token($this->sodaClient->getOAuth2Token()); |
|
347
|
|
|
|
|
348
|
|
|
$result = $this->sendIndividualRequest($urlQuery, $method, $this->sodaClient->associativeArrayEnabled(), $headers); |
|
349
|
|
|
|
|
350
|
|
|
$this->setApiVersion($headers); |
|
351
|
|
|
|
|
352
|
|
|
return $result; |
|
353
|
|
|
} |
|
354
|
|
|
|
|
355
|
|
|
/** |
|
356
|
|
|
* Send the appropriate request header based on the method that's required |
|
357
|
|
|
* |
|
358
|
|
|
* @param UrlQuery $urlQuery The object for the API endpoint |
|
359
|
|
|
* @param string $method Either `get` or `delete` |
|
360
|
|
|
* @param bool $associativeArrays Whether or not to return the information as an associative array |
|
361
|
|
|
* @param array $headers An array with the cURL headers received |
|
362
|
|
|
* |
|
363
|
|
|
* @return mixed |
|
364
|
|
|
*/ |
|
365
|
|
|
private function sendIndividualRequest ($urlQuery, $method, $associativeArrays, &$headers) |
|
366
|
|
|
{ |
|
367
|
|
|
if ($method === "get") |
|
368
|
|
|
{ |
|
369
|
|
|
return $urlQuery->sendGet("", $associativeArrays, $headers); |
|
370
|
|
|
} |
|
371
|
|
|
else if ($method === "delete") |
|
372
|
|
|
{ |
|
373
|
|
|
return $urlQuery->sendDelete($associativeArrays, $headers); |
|
374
|
|
|
} |
|
375
|
|
|
|
|
376
|
|
|
throw new \InvalidArgumentException("Invalid request method"); |
|
377
|
|
|
} |
|
378
|
|
|
|
|
379
|
|
|
/** |
|
380
|
|
|
* Determine and save the API version if it does not exist for easy access later |
|
381
|
|
|
* |
|
382
|
|
|
* @param array $headers An array with the cURL headers received |
|
383
|
|
|
*/ |
|
384
|
|
|
private function setApiVersion ($headers) |
|
385
|
|
|
{ |
|
386
|
|
|
// Only set the API version number if it hasn't been set yet |
|
387
|
|
|
if ($this->apiVersion == 0) |
|
388
|
|
|
{ |
|
389
|
|
|
$this->apiVersion = $this->parseApiVersion($headers); |
|
|
|
|
|
|
390
|
|
|
} |
|
391
|
|
|
} |
|
392
|
|
|
|
|
393
|
|
|
/** |
|
394
|
|
|
* Determine the version number of the API this dataset is using |
|
395
|
|
|
* |
|
396
|
|
|
* @param array $responseHeaders An array with the cURL headers received |
|
397
|
|
|
* |
|
398
|
|
|
* @return double The Socrata API version number this dataset uses |
|
|
|
|
|
|
399
|
|
|
*/ |
|
400
|
|
|
private function parseApiVersion ($responseHeaders) |
|
401
|
|
|
{ |
|
402
|
|
|
// A header that's unique to the legacy API |
|
403
|
|
|
if (array_key_exists('X-SODA2-Legacy-Types', $responseHeaders) && $responseHeaders['X-SODA2-Legacy-Types']) |
|
404
|
|
|
{ |
|
405
|
|
|
return 1; |
|
406
|
|
|
} |
|
407
|
|
|
|
|
408
|
|
|
// A header that's unique to the new API |
|
409
|
|
|
if (array_key_exists('X-SODA2-Truth-Last-Modified', $responseHeaders)) |
|
410
|
|
|
{ |
|
411
|
|
|
if (empty($this->metadata)) |
|
412
|
|
|
{ |
|
413
|
|
|
$this->getMetadata(); |
|
414
|
|
|
} |
|
415
|
|
|
|
|
416
|
|
|
if ($this->metadata['newBackend']) |
|
417
|
|
|
{ |
|
418
|
|
|
return 2.1; |
|
419
|
|
|
} |
|
420
|
|
|
|
|
421
|
|
|
return 2; |
|
422
|
|
|
} |
|
423
|
|
|
|
|
424
|
|
|
return 0; |
|
425
|
|
|
} |
|
426
|
|
|
} |
|
427
|
|
|
|
This check compares the return type specified in the
@returnannotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch.