New SQLite function to decode struct JSON

�� Automatic code style fixes

�� Automatic code style fixes

do not say sqlite is missing if it fails to init

reintroduce init method

Some plugins (structpublish) overwrite it in their own class.

streamline database loading

This removes the init() method in the helper and handles all database
initialization in getDB(), lazyloading it only when accessed.

If an exception happens during the in

streamline database loading

This removes the init() method in the helper and handles all database
initialization in getDB(), lazyloading it only when accessed.

If an exception happens during the initialization it is logged before
signaling the no sqlite cause.

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adjust method call for getting PDO access

Use new \dokuwiki\plugin\sqlite\SQLiteDB class for DB access

Replace boolean with integer in queries

Better sqlite compatibility

Add event to allow other plugins to supply custom sqlite functions

Dummy IS_PUBLISHER check with test

Manual coding style fixes

Method and variable visibility, camel case method names. Some exclusions due to inheritance

Automatic coding style fixes

�� Fix fatal error if no sqlite adapter is available

If the sqlite plugin is installed and active, but no sqlite is available to the php binary (e.g. if
the extension is not installed or not enabled

�� Fix fatal error if no sqlite adapter is available

If the sqlite plugin is installed and active, but no sqlite is available to the php binary (e.g. if
the extension is not installed or not enabled) then that would cause a fatal error, because
getAdapter returns null and that case and trying to access getName on null doesn't work.

Closes #440

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better handling of failing sqlite plugin init. fixes #200

renamed JSON to STRUCT_JSON. fixes #157

Reinitialize db if $conf['meta'] changed

register a JSON function in sqlite

This way types could select multiple columns into a single return value.

It probably makes sense to register a similar function as a AGGREGATE
function as well.

use one multivalue table per schema

first go at data searching

a very first basic version of the schema editor works

a first go at the overall structure. far from complete

initial wizard generated structure