refactor ChargePointSelect to use OcppProtocol

this DTO should include the protocol which contains transport and version info.
this would enable to unify some logic wrt. Invoker and Client classes.

Author: goekay

src/main/java/de/rwth/idsg/steve/ocpp/OcppProtocol.java

@@ -65,4 +65,13 @@ public static OcppProtocol fromCompositeValue(String v) {
         }
         throw new IllegalArgumentException(v);
     }
+
+    public static OcppProtocol from(OcppVersion version, OcppTransport transport) {
+        for (OcppProtocol value : OcppProtocol.values()) {
+            if (value.getVersion() == version && value.getTransport() == transport) {
+                return value;
+            }
+        }
+        throw new IllegalArgumentException("Could not find OcppProtocol for " + version + " and " + transport);
+    }
 }

src/main/java/de/rwth/idsg/steve/repository/dto/ChargePointSelect.java

@@ -18,6 +18,7 @@
  */
 package de.rwth.idsg.steve.repository.dto;
 
+import de.rwth.idsg.steve.ocpp.OcppProtocol;
 import de.rwth.idsg.steve.ocpp.OcppTransport;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
@@ -29,21 +30,21 @@
 @RequiredArgsConstructor
 @Getter
 public final class ChargePointSelect {
-    private final OcppTransport ocppTransport;
+    private final OcppProtocol ocppProtocol;
     private final String chargeBoxId;
     private final String endpointAddress;
 
-    public ChargePointSelect(OcppTransport ocppTransport, String chargeBoxId) {
+    public ChargePointSelect(OcppProtocol ocppProtocol, String chargeBoxId) {
         // Provide a non-null value (or placeholder if you will) to frontend for JSON charge points.
         // This is clearly a hack. Not my proudest moment.
-        this(ocppTransport, chargeBoxId, "-");
+        this(ocppProtocol, chargeBoxId, "-");
     }
 
     public boolean isEndpointAddressSet() {
         return !("-".equals(endpointAddress));
     }
 
     public boolean isSoap() {
-        return OcppTransport.SOAP == ocppTransport;
+        return OcppTransport.SOAP == ocppProtocol.getTransport();
     }
 }

src/main/java/de/rwth/idsg/steve/repository/impl/ChargePointRepositoryImpl.java

@@ -100,7 +100,7 @@ public List<ChargePointSelect> getChargePointSelect(OcppProtocol protocol, List<
                   .and(CHARGE_BOX.REGISTRATION_STATUS.in(inStatusFilter))
                   .and(chargeBoxIdCondition)
                   .fetch()
-                  .map(r -> new ChargePointSelect(protocol.getTransport(), r.value1(), r.value2()));
+                  .map(r -> new ChargePointSelect(protocol, r.value1(), r.value2()));
     }
 
     @Override

src/main/java/de/rwth/idsg/steve/service/ChargePointHelperService.java

@@ -229,8 +229,10 @@ private List<ChargePointSelect> getChargePoints(OcppProtocol protocol, List<Regi
             ? jsonEndpoint.getChargeBoxIdList()
             : jsonEndpoint.getChargeBoxIdList().stream().filter(chargeBoxIdFilter::contains).collect(Collectors.toList());
 
+        var jsonProtocol = OcppProtocol.from(jsonEndpoint.getVersion(), OcppTransport.JSON);
+
         for (String chargeBoxId : chargeBoxIdList) {
-            returnList.add(new ChargePointSelect(OcppTransport.JSON, chargeBoxId));
+            returnList.add(new ChargePointSelect(jsonProtocol, chargeBoxId));
         }
 
         return returnList;

src/main/java/de/rwth/idsg/steve/web/ChargePointSelectEditor.java

@@ -18,7 +18,7 @@
  */
 package de.rwth.idsg.steve.web;
 
-import de.rwth.idsg.steve.ocpp.OcppTransport;
+import de.rwth.idsg.steve.ocpp.OcppProtocol;
 import de.rwth.idsg.steve.repository.dto.ChargePointSelect;
 
 import java.beans.PropertyEditorSupport;
@@ -34,11 +34,11 @@ public void setAsText(String text) {
         if (!text.isEmpty()) {
             String[] chargePointItem = text.split(";");
 
-            // chargePointItem[0] : ocpp transport type
+            // chargePointItem[0] : ocpp protocol
             // chargePointItem[1] : chargebox id
             // chargePointItem[2] : endpoint (IP) address
             ChargePointSelect cps = new ChargePointSelect(
-                    OcppTransport.fromName(chargePointItem[0]),
+                    OcppProtocol.fromCompositeValue(chargePointItem[0]),
                     chargePointItem[1],
                     chargePointItem[2]
             );

src/main/resources/webapp/WEB-INF/views/00-cp-multiple.jsp

@@ -27,7 +27,7 @@
 		<td>
 			<form:select path="chargePointSelectList" size="5" multiple="true">
 				<c:forEach items="${cpList}" var="cp">
-					<form:option value="${cp.ocppTransport};${cp.chargeBoxId};${cp.endpointAddress}" label="${cp.chargeBoxId}"/>
+					<form:option value="${cp.ocppProtocol};${cp.chargeBoxId};${cp.endpointAddress}" label="${cp.chargeBoxId}"/>
 				</c:forEach>
 			</form:select>
 		</td>

src/main/resources/webapp/WEB-INF/views/00-cp-single.jsp

@@ -25,7 +25,7 @@
 		<td>
 			<form:select path="chargePointSelectList" size="5" multiple="false">
 				<c:forEach items="${cpList}" var="cp">
-					<form:option value="${cp.ocppTransport};${cp.chargeBoxId};${cp.endpointAddress}" label="${cp.chargeBoxId}"/>
+					<form:option value="${cp.ocppProtocol};${cp.chargeBoxId};${cp.endpointAddress}" label="${cp.chargeBoxId}"/>
 				</c:forEach>
 			</form:select>
 		</td>