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What is a Field Type

• Base building block of all content in eZ Publish • Collection of methods to store, read and validate content

• Object oriented architecture of content model

• Content type – blueprint of a single piece of content • Collection of class attributes, which are of some (data)type

• Content – a single piece of content • Instance of a class • Collection of Fields, values of FieldDefinitions

What is a datatype (aka FieldType)

Updated Glossary

eZ Publish 4 eZ Publish 5 Content object Content Content class Content Type Content object attribute Field Content class attribute Field Definition Object attribute content Field Value Datatype Field Type

How it is consumed

FieldType API

eZ\Publish\SPI\FieldType\FieldType • getFieldTypeIdentifier • acceptValue / getEmptyValue • fromHash / toHash • fromPersistenceValue / toPersistenceValue • getSettingsSchema /

getValidatorConfigurationSchema • validateFieldSettings / validateValidatorConfiguration • validate • getName • isSearchable

FieldType SPI (interfaces to implement)

•eZ\Publish\SPI\FieldType\FieldStorage • storeFieldData • getFieldData • deleteFieldData • hasFieldData • getIndexData

•eZ\Publish\SPI\FieldType\Indexable

•eZ\Publish\SPI\FieldType\ValidationError

FieldType API abstract classes

eZ\Publish\Core\FieldType\FieldType • Abstract that implements …\SPI\FieldType\FieldType • Default behavior of some methods + validator handling

Needed for Legacy Storage Engine:

eZ\Publish\Core\FieldType\GatewayBasedStorage • Abstract that implements …\SPI\FieldType\FieldStorage

eZ\Publish\Core\FieldType\StorageGateway

• Abstract for gateways to external storage • Used by GatewayBasedStorage

eZ\Publish\Core\Persistence\Legacy\Content\FieldValue\Con

verter

FieldType API abstract classes #2

•eZ\Publish\Core\FieldType\Value • Abstract for field value

•eZ\Publish\Core\FieldType\ValidationError

• Implementation of …\SPI\FieldType\ValidationError

•eZ\Publish\Core\FieldType\Validator

• Abstract for all validators to extend

•eZ\Publish\Core\IO\IOService • Binary files IO handling

FieldType standardized unit/integration tests

•API integration tests

• Using real world implementation of repository • Tests if our field type plays well with others • eZ\Publish\API\Repository\Tests\FieldType\TextLineIntegrationTest.php

•SPI integration tests • Hooks directly into persistence implementation • Tests if our field type stores and loads data correctly • eZ\Publish\SPI\Tests\FieldType\TextLineIntegrationTest.php

•Unit testing of the field type • Tests the field type methods (units), one by one • eZ\Publish\Core\FieldType\Tests\TextLineTest.php

•TDD is your friend. Really!

What about BC

•Right now: Think dual kernel

• Datatype [legacy] for the backoffice

• FieldType [5.x] for the front

•Yes, you currently have to write both

The end

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