POIM-PDU-Description {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) poi(103916) poim(0) major-version-1 (1) minor-version-1 (1)} 

DEFINITIONS AUTOMATIC TAGS ::= BEGIN

IMPORTS 

ItsPduHeader
FROM ETSI-ITS-CDD {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts (102894) cdd (2) major-version-4 (4) minor-version-1 (1)} WITH SUCCESSORS

ParkingAvailabilityBlock
FROM POIM-ParkingAvailability {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) poi(103916) parkingAvailability(1) major-version-1 (1) minor-version-1 (1)}  WITH SUCCESSORS

-- other block imports from separate standards to be added here when needed.
;

/** 
 * This type represents the POIM PDU.
 *
 * It shall include the following components: 
 *
 * @field header: the header of the POIM PDU.
 *
 * @field payload: the payload of the POIM PDU.
*/

POIM ::= SEQUENCE { 
    header  	ItsPduHeader (WITH COMPONENTS {... , protocolVersion (1), messageId(poim)}),        
    payload     WrappedPoiInformationBlocks
} 

/**
 * This DF represents a list of POI information blocks, each with their type identifier. 
*/
WrappedPoiInformationBlocks::= SEQUENCE (SIZE (1..8,...)) OF WrappedPoiInformationBlock

/**
 * This information object class is an abstract template to instantiate POI Information Blocks.
 *
 * It shall include the following components: 
 *
 * @field &id: the identifier of the block type.
 *
 * @field &Type: the block content.
 *
*/
BLOCK-TYPE ::= CLASS {
    &id        PoiType,
    &Content
} WITH SYNTAX {&Content IDENTIFIED BY &id} 

/**
 * This DE represents the identifier of the container type. 
 *
*/
PoiType::= INTEGER(1..128,...)

/**
 * These value assignements represent specific values of the block type identifier. 
*/
parkingAvailability    PoiType ::= 1

/**
 * This information object set represents the association between the block type and the block content.
*/

PoiInformationSet BLOCK-TYPE ::= {
   {ParkingAvailabilityBlock    IDENTIFIED BY parkingAvailability}, ...
}

/**
 * This DF represents a POI Information Block preceded by its type identifier and a lenght indicator.
 *
 * It shall include the following components: 
 *
 * @field poiType: the identifier of the POI Information Block type.
 *
 * @field poiBlock: the POI Information Block.
 *
*/
WrappedPoiInformationBlock ::= SEQUENCE {
    poiType      BLOCK-TYPE.&id({PoiInformationSet}),
    poiBlock     BLOCK-TYPE.&Content({PoiInformationSet}{@poiType})
}

END