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## Add semantic data to in-memory (#1202)
To avoid having competing data being stored at a different point in time
during a request aimed for the same subject, property value assignments are collected
and stored in-memory before the finale `Store::updateData` process will
be invoked once.
```php
// Create in-memory ParserOutput transfer object
$parserData = ApplicationFactory::getInstance()->newParserData(
$parser->getTitle(),
$parser->getOutput()
);
$subject = $parserData->getSubject();
$property = new DIProperty( 'SomeProperty' );
// Add individual instances of a value for a known property
foreach ( $values as $value ) {
$dataValue = DataValueFactory::getInstance()->newDataValueByProperty(
$property,
trim( $value ), // Text value
false,
$subject
);
$parserData->addDataValue( $dataValue );
}
// Add individual instances of a value for a property only known by
// its textual representation
foreach ( $values as $value ) {
$dataValue = DataValueFactory::getInstance()->newDataValueByText(
$property,
trim( $value ), // Text value
false,
$subject
);
// Adds the object to the SemanticData container you could also use
// $parserData->getSemanticData()->addPropertyObjectValue( ...)
$parserData->addDataValue( $dataValue );
}
// Ensures that objects are pushed to the ParserOutput
$parserData->pushSemanticDataToParserOutput();
```
## Access semantic data currently stored in-memory
```php
// Create in-memory ParserOutput transfer object
$parserData = ApplicationFactory::getInstance()->newParserData(
$parser->getTitle(),
$parser->getOutput()
);
// Access to the data store in-memory
$semanticData = $parserData->getSemanticData();
```
## Read semantic data from DB
```php
$subject = new DIWikiPage( 'Foo', NS_MAIN );
$semanticData = ApplicationFactory::getInstance()->getStore->getSemanticData(
$subject
);
```
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