Feature: #68094 - Database Query DataProcessor

See forge#68094


A new Database Query DataProcessor has been introduced, which can be used to fetch data from the Database to be handled by a ContentObject implementing the processors, e.g. the FLUIDTEMPLATE ContentObject.

The Database Query Processor works like the code from the Content Object CONTENT, except for just handing over the result as array. A FLUIDTEMPLATE can then simply iterate over processed data automatically.

tt_content.mycontent.20 = FLUIDTEMPLATE
tt_content.mycontent.20 {
        file = EXT:myextension/Resources/Private/Templates/ContentObjects/MyContent.html

        dataProcessing.10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
        dataProcessing.10 {
                # regular if syntax
                if.isTrue.field = records

                # the table name from which the data is fetched from
                # + stdWrap
                table = tt_address

                # All properties from .select can be used directly
                # + stdWrap
                colPos = 1
                pidInList = 13,14

                # The target variable to be handed to the ContentObject again, can be used
                # in Fluid e.g. to iterate over the objects. defaults to "records" when not defined
                # + stdWrap
                as = myrecords

                # The fetched records can also be processed by DataProcessors.
                # All configured processors are applied to every row of the result.
                dataProcessing {
                        10 = TYPO3\CMS\Frontend\DataProcessing\FilesProcessor
                        10 {
                                references.fieldName = image

In the Fluid template then iterate over the files:

<f:for each="{myrecords}" as="record">
                <f:image image="{record.files.0}" />
                <a href="{record.data.www}">{record.data.first_name} {record.data.last_name}</a>