dmp blueprint reference add multiple

dmp-backend/core/src/main/java/eu/eudat/commons/types/dmpblueprint/ReferenceTypeFieldEntity.java

@@ -12,6 +12,8 @@ public class ReferenceTypeFieldEntity extends FieldEntity {
     @XmlAttribute(name="referenceTypeId")
     private UUID referenceTypeId;
 
+    @XmlAttribute(name = "multipleSelect")
+    private Boolean multipleSelect;
     public UUID getReferenceTypeId() {
         return referenceTypeId;
     }
@@ -19,4 +21,12 @@ public class ReferenceTypeFieldEntity extends FieldEntity {
     public void setReferenceTypeId(UUID referenceTypeId) {
         this.referenceTypeId = referenceTypeId;
     }
+
+    public Boolean getMultipleSelect() {
+        return multipleSelect;
+    }
+
+    public void setMultipleSelect(Boolean multipleSelect) {
+        this.multipleSelect = multipleSelect;
+    }
 }

dmp-backend/core/src/main/java/eu/eudat/commons/types/dmpblueprint/importexport/ReferenceTypeFieldImportExport.java

@@ -24,6 +24,9 @@ public class ReferenceTypeFieldImportExport {
     @XmlAttribute(name = "required")
     private boolean required;
 
+    @XmlAttribute(name = "multipleSelect")
+    private Boolean multipleSelect;
+
     public UUID getId() {
         return id;
     }
@@ -80,5 +83,11 @@ public class ReferenceTypeFieldImportExport {
         this.required = required;
     }
 
+    public Boolean getMultipleSelect() {
+        return multipleSelect;
+    }
 
+    public void setMultipleSelect(Boolean multipleSelect) {
+        this.multipleSelect = multipleSelect;
+    }
 }

dmp-backend/core/src/main/java/eu/eudat/model/builder/commonmodels/dmpblueprint/ReferenceTypeFieldCommonModelBuilder.java

@@ -4,6 +4,7 @@ import eu.eudat.commonmodels.models.dmpblueprint.ReferenceTypeFieldModel;
 import eu.eudat.commons.types.dmpblueprint.ReferenceTypeFieldEntity;
 import eu.eudat.convention.ConventionService;
 import eu.eudat.model.builder.commonmodels.ReferenceTypeCommonModelBuilder;
+import eu.eudat.model.dmpblueprintdefinition.ReferenceTypeField;
 import eu.eudat.query.ReferenceTypeQuery;
 import gr.cite.tools.data.builder.BuilderFactory;
 import gr.cite.tools.data.query.QueryFactory;
@@ -31,6 +32,7 @@ public class ReferenceTypeFieldCommonModelBuilder extends FieldCommonModelBuilde
 
 	protected ReferenceTypeFieldModel buildChild(ReferenceTypeFieldEntity data, ReferenceTypeFieldModel model) {
 		if (data.getReferenceTypeId() != null ) model.setReferenceType(this.builderFactory.builder(ReferenceTypeCommonModelBuilder.class).build(this.queryFactory.query(ReferenceTypeQuery.class).ids(data.getReferenceTypeId()).first())); //TODO: Optimize
+		//model.setMultipleSelect(data.getMultipleSelect()); //TODO: add to common model
 		
 		return model;
 	}

dmp-backend/core/src/main/java/eu/eudat/model/builder/dmpblueprintdefinition/ReferenceFieldBuilder.java

@@ -42,6 +42,7 @@ public class ReferenceFieldBuilder extends FieldBuilder<ReferenceTypeField, Refe
 		FieldSet referenceTypeFields = fields.extractPrefixed(this.asPrefix(ReferenceTypeField._referenceType));
 
 		if (data.getReferenceTypeId() != null && !referenceTypeFields.isEmpty() ) model.setReferenceType(this.builderFactory.builder(ReferenceTypeBuilder.class).build(referenceTypeFields, this.queryFactory.query(ReferenceTypeQuery.class).ids(data.getReferenceTypeId()).first())); //TODO: Optimize
+		if (fields.hasField(this.asIndexer(ReferenceTypeField._multipleSelect))) model.setMultipleSelect(data.getMultipleSelect());
 		return model;
 	}
 }

dmp-backend/core/src/main/java/eu/eudat/model/dmpblueprintdefinition/ReferenceTypeField.java

@@ -9,6 +9,9 @@ public class ReferenceTypeField extends Field {
 	public final static String _referenceType = "referenceType";
 	private ReferenceType referenceType;
 
+	public final static String _multipleSelect = "multipleSelect";
+	private Boolean multipleSelect;
+
 	public ReferenceType getReferenceType() {
 		return referenceType;
 	}
@@ -16,4 +19,12 @@ public class ReferenceTypeField extends Field {
 	public void setReferenceType(ReferenceType referenceType) {
 		this.referenceType = referenceType;
 	}
+
+	public Boolean getMultipleSelect() {
+		return multipleSelect;
+	}
+
+	public void setMultipleSelect(Boolean multipleSelect) {
+		this.multipleSelect = multipleSelect;
+	}
 }

dmp-backend/core/src/main/java/eu/eudat/model/persist/dmpblueprintdefinition/ReferenceTypeFieldPersist.java

@@ -9,6 +9,7 @@ import org.springframework.context.annotation.Scope;
 import org.springframework.context.i18n.LocaleContextHolder;
 import org.springframework.stereotype.Component;
 
+import java.util.Arrays;
 import java.util.List;
 import java.util.UUID;
 
@@ -18,6 +19,11 @@ public class ReferenceTypeFieldPersist extends FieldPersist {
 
     public static final String _referenceTypeId = "referenceTypeId";
 
+    private Boolean multipleSelect;
+
+    public static final String _multipleSelect = "multipleSelect";
+
+    
     public UUID getReferenceTypeId() {
         return referenceTypeId;
     }
@@ -26,6 +32,14 @@ public class ReferenceTypeFieldPersist extends FieldPersist {
         this.referenceTypeId = referenceTypeId;
     }
 
+    public Boolean getMultipleSelect() {
+        return multipleSelect;
+    }
+
+    public void setMultipleSelect(Boolean multipleSelect) {
+        this.multipleSelect = multipleSelect;
+    }
+
     @Component(ReferenceFieldPersistPersistValidator.ValidatorName)
     @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
     public static class ReferenceFieldPersistPersistValidator extends BaseFieldPersistValidator<ReferenceTypeFieldPersist> {
@@ -44,10 +58,14 @@ public class ReferenceTypeFieldPersist extends FieldPersist {
         @Override
         protected List<Specification> specifications(ReferenceTypeFieldPersist item) {
             List<Specification> specifications = getBaseSpecifications(item);
-            specifications.add(
+            specifications.addAll(Arrays.asList(
                     this.spec()
                             .must(() -> !this.isNull(item.getReferenceTypeId()))
-                            .failOn(ReferenceTypeFieldPersist._referenceTypeId).failWith(messageSource.getMessage("Validation_Required", new Object[]{ReferenceTypeFieldPersist._referenceTypeId}, LocaleContextHolder.getLocale()))
+                            .failOn(ReferenceTypeFieldPersist._referenceTypeId).failWith(messageSource.getMessage("Validation_Required", new Object[]{ReferenceTypeFieldPersist._referenceTypeId}, LocaleContextHolder.getLocale())),
+                    this.spec()
+                            .must(() -> !this.isNull(item.getMultipleSelect()))
+                            .failOn(ReferenceTypeFieldPersist._multipleSelect).failWith(messageSource.getMessage("Validation_Required", new Object[]{ReferenceTypeFieldPersist._multipleSelect}, LocaleContextHolder.getLocale())))
+                    
             );
             return specifications;
         }

dmp-backend/core/src/main/java/eu/eudat/model/persist/dmpproperties/DmpBlueprintValuePersist.java

@@ -33,6 +33,8 @@ public class DmpBlueprintValuePersist {
     public static final String _fieldValue = "fieldValue";
     private List<ReferencePersist> references;
     public static final String _references = "references";
+    private ReferencePersist reference;
+    public static final String _reference = "reference";
 
     public UUID getFieldId() {
         return fieldId;
@@ -58,6 +60,14 @@ public class DmpBlueprintValuePersist {
         this.references = references;
     }
 
+    public ReferencePersist getReference() {
+        return reference;
+    }
+
+    public void setReference(ReferencePersist reference) {
+        this.reference = reference;
+    }
+
     @Component(DmpBlueprintValuePersistValidator.ValidatorName)
     @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
     public static class DmpBlueprintValuePersistValidator extends BaseValidator<DmpBlueprintValuePersist> {
@@ -97,16 +107,27 @@ public class DmpBlueprintValuePersist {
                             .must(() -> !this.isEmpty(item.getFieldValue()))
                             .failOn(DmpBlueprintValuePersist._fieldValue).failWith(messageSource.getMessage("Validation_Required", new Object[]{fieldEntity.getLabel()}, LocaleContextHolder.getLocale())),
                     this.spec()
-                            .iff(() -> fieldEntity.getCategory().equals(DmpBlueprintFieldCategory.ReferenceType) && this.isEmpty(item.getFieldValue()) && required)
+                            .iff(() -> fieldEntity.getCategory().equals(DmpBlueprintFieldCategory.ReferenceType) && this.isEmpty(item.getFieldValue()) && ((ReferenceTypeFieldEntity)fieldEntity).getMultipleSelect() && required)
                             .must(() -> !this.isListNullOrEmpty(item.getReferences()))
                             // TODO: Cast Exception
 //                            .failOn(DmpBlueprintValuePersist._references).failWith(messageSource.getMessage("Validation_Required", new Object[]{!this.isEmpty(fieldEntity.getLabel()) ? fieldEntity.getLabel() : this.getReferenceTypeName(fieldEntity)}, LocaleContextHolder.getLocale())),
                             .failOn(DmpBlueprintValuePersist._references).failWith(messageSource.getMessage("Validation_Required", new Object[]{!this.isEmpty(fieldEntity.getLabel()) ? fieldEntity.getLabel() : DmpBlueprintValuePersist._references}, LocaleContextHolder.getLocale())),
+                    this.spec()
+                            .iff(() -> fieldEntity.getCategory().equals(DmpBlueprintFieldCategory.ReferenceType) && this.isEmpty(item.getFieldValue()) && !((ReferenceTypeFieldEntity)fieldEntity).getMultipleSelect() && required)
+                            .must(() -> !this.isNull(item.getReference()))
+                            // TODO: Cast Exception
+//                            .failOn(DmpBlueprintValuePersist._references).failWith(messageSource.getMessage("Validation_Required", new Object[]{!this.isEmpty(fieldEntity.getLabel()) ? fieldEntity.getLabel() : this.getReferenceTypeName(fieldEntity)}, LocaleContextHolder.getLocale())),
+                            .failOn(DmpBlueprintValuePersist._reference).failWith(messageSource.getMessage("Validation_Required", new Object[]{!this.isEmpty(fieldEntity.getLabel()) ? fieldEntity.getLabel() : DmpBlueprintValuePersist._reference}, LocaleContextHolder.getLocale())),
                     this.navSpec()
                             .iff(() -> !this.isListNullOrEmpty(item.getReferences()))
                             .on(DmpBlueprintValuePersist._references)
                             .over(item.getReferences())
-                            .using((itm) -> this.validatorFactory.validator(ReferencePersist.ReferenceWithoutTypePersistValidator.class))
+                            .using((itm) -> this.validatorFactory.validator(ReferencePersist.ReferenceWithoutTypePersistValidator.class)),
+                    this.refSpec()
+                            .iff(() -> !this.isNull(item.getReference()))
+                            .on(DmpBlueprintValuePersist._reference)
+                            .over(item.getReferences())
+                            .using(() -> this.validatorFactory.validator(ReferencePersist.ReferenceWithoutTypePersistValidator.class))
             );
         }
 

dmp-backend/core/src/main/java/eu/eudat/service/dmp/DmpServiceImpl.java

@@ -750,6 +750,10 @@ public class DmpServiceImpl implements DmpService {
         List<DmpReferencePersist> dmpReferencePersists = new ArrayList<>();
         if (persist.getDmpBlueprintValues() != null && !persist.getDmpBlueprintValues().isEmpty()){
             for (DmpBlueprintValuePersist fieldValuePersist: persist.getDmpBlueprintValues().values()) {
+                if (fieldValuePersist.getReference() != null) {
+                    if (fieldValuePersist.getReferences() == null) fieldValuePersist.setReferences(new ArrayList<>());
+                    fieldValuePersist.getReferences().add(fieldValuePersist.getReference());
+                }
                 if (this.conventionService.isNullOrEmpty(fieldValuePersist.getFieldValue()) && !this.conventionService.isListNullOrEmpty( fieldValuePersist.getReferences())) {
                     for (ReferencePersist referencePersist : fieldValuePersist.getReferences()) {
                         DmpReferencePersist dmpReferencePersist = new DmpReferencePersist();

dmp-backend/core/src/main/java/eu/eudat/service/dmpblueprint/DmpBlueprintServiceImpl.java

@@ -265,6 +265,7 @@ public class DmpBlueprintServiceImpl implements DmpBlueprintService {
             case ReferenceType -> {
                 ReferenceTypeFieldEntity dataTyped = new ReferenceTypeFieldEntity();
                 dataTyped.setReferenceTypeId(((ReferenceTypeFieldPersist) persist).getReferenceTypeId());
+                dataTyped.setMultipleSelect(((ReferenceTypeFieldPersist) persist).getMultipleSelect());
                 data = dataTyped;
             }
             default -> throw new  InternalError("unknown type: " + persist.getCategory());
@@ -540,6 +541,7 @@ public class DmpBlueprintServiceImpl implements DmpBlueprintService {
         xml.setDescription(entity.getDescription());
         xml.setOrdinal(entity.getOrdinal());
         xml.setRequired(entity.isRequired());
+        xml.setMultipleSelect(entity.getMultipleSelect());
         return xml;
     }
 
@@ -670,6 +672,7 @@ public class DmpBlueprintServiceImpl implements DmpBlueprintService {
         persist.setDescription(importXml.getDescription());
         persist.setOrdinal(importXml.getOrdinal());
         persist.setRequired(importXml.isRequired());
+        persist.setMultipleSelect(importXml.getMultipleSelect());
         return persist;
     }
 

dmp-frontend/src/app/core/model/dmp-blueprint/dmp-blueprint.ts

@@ -60,6 +60,7 @@ export interface ExtraFieldInSection extends FieldInSection {
 
 export interface ReferenceTypeFieldInSection extends FieldInSection {
 	referenceType: ReferenceType;
+	multipleSelect: boolean;
 }
 
 //
@@ -120,4 +121,5 @@ export interface ExtraFieldInSectionPersist extends FieldInSectionPersist {
 
 export interface ReferenceTypeFieldInSectionPersist extends FieldInSectionPersist {
 	referenceTypeId: Guid;
+	multipleSelect: boolean;
 }

dmp-frontend/src/app/core/model/dmp/dmp.ts

@@ -95,6 +95,7 @@ export interface DmpBlueprintValuePersist {
 	fieldId: Guid;
 	fieldValue: string;
 	references: DmpReferencePersist[];
+	reference: DmpReferencePersist;
 }
 
 export interface DmpContactPersist {

dmp-frontend/src/app/ui/admin/dmp-blueprint/editor/dmp-blueprint-editor.component.html

@@ -178,6 +178,12 @@
 																				<mat-error *ngIf="field.get('semantics').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
 																			</mat-form-field>
 																		</div>
+
+																		<div class="col-auto section-field" *ngIf="field.get('category').value === dmpBlueprintSectionFieldCategory.ReferenceType">
+																			<mat-checkbox [disabled]="formGroup.disabled" [checked]="field.get('multipleSelect').value" (change)="field.get('multipleSelect').setValue($event.checked)"><span>{{'DMP-BLUEPRINT-EDITOR.FIELDS.FIELD-MULTIPLE-SELECT' | translate}}</span></mat-checkbox>
+																			<mat-error *ngIf="field.get('multipleSelect')?.hasError('backendError')">{{field.get('multipleSelect')?.getError('backendError').message}}</mat-error>
+																			<mat-error *ngIf="field.get('multipleSelect')?.hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+																		</div>
 																	</div>
 																</div>
 																<div class="col-12 col-xl-auto">

dmp-frontend/src/app/ui/admin/dmp-blueprint/editor/dmp-blueprint-editor.model.ts

@@ -71,6 +71,7 @@ export class DmpBlueprintEditorModel extends BaseEditorModel implements DmpBluep
 		const field: FieldInSectionEditorModel = new FieldInSectionEditorModel(this.validationErrorModel);
 		field.id = Guid.create();
 		field.ordinal = index + 1;
+		field.multipleSelect = false;
 		return field.buildForm({ rootPath: 'definition.sections[' + sectionIndex + '].fields[' + index + '].' });
 	}
 
@@ -308,6 +309,7 @@ export class FieldInSectionEditorModel implements FieldInSectionPersist {
 	public dataType: DmpBlueprintExtraFieldDataType;
 	public systemFieldType: DmpBlueprintSystemFieldType;
 	public referenceTypeId: Guid;
+	public multipleSelect: boolean;
 
 	static get alwaysRequiredSystemFieldTypes(): DmpBlueprintSystemFieldType[] {
 		return [DmpBlueprintSystemFieldType.Title, DmpBlueprintSystemFieldType.Description, DmpBlueprintSystemFieldType.Language, DmpBlueprintSystemFieldType.AccessRights];
@@ -338,6 +340,7 @@ export class FieldInSectionEditorModel implements FieldInSectionPersist {
 			this.dataType = (item as ExtraFieldInSection).dataType;
 		} else if (this.category == DmpBlueprintFieldCategory.ReferenceType) {
 			this.referenceTypeId = (item as ReferenceTypeFieldInSection).referenceType?.id;
+			this.multipleSelect= (item as ReferenceTypeFieldInSection).multipleSelect;
 		}
 
 		return this;
@@ -369,6 +372,7 @@ export class FieldInSectionEditorModel implements FieldInSectionPersist {
 			dataType: [{ value: this.dataType, disabled: disabled }, context.getValidation('dataType').validators],
 			systemFieldType: [{ value: this.systemFieldType, disabled: disabled }, context.getValidation('systemFieldType').validators],
 			referenceTypeId: [{ value: this.referenceTypeId, disabled: disabled }, context.getValidation('referenceTypeId').validators],
+			multipleSelect: [{ value: this.multipleSelect, disabled: disabled }, context.getValidation('multipleSelect').validators],
 		});
 	}
 
@@ -394,6 +398,7 @@ export class FieldInSectionEditorModel implements FieldInSectionPersist {
 		baseValidationArray.push({ key: 'dataType', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}dataType`)] });
 		baseValidationArray.push({ key: 'systemFieldType', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}systemFieldType`)] });
 		baseValidationArray.push({ key: 'referenceTypeId', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}referenceTypeId`)] });
+		baseValidationArray.push({ key: 'multipleSelect', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}multipleSelect`)] });
 
 		baseContext.validation = baseValidationArray;
 		return baseContext;
@@ -411,7 +416,7 @@ export class FieldInSectionEditorModel implements FieldInSectionPersist {
 			validationErrorModel
 		});
 
-		['id', 'category', 'dataType', 'systemFieldType', 'referenceTypeId', 'label', 'placeholder', 'description', 'semantics', 'required', 'ordinal'].forEach(keyField => {
+		['id', 'category', 'dataType', 'systemFieldType', 'referenceTypeId', 'multipleSelect', 'label', 'placeholder', 'description', 'semantics', 'required', 'ordinal'].forEach(keyField => {
 			const control = formGroup?.get(keyField);
 			control?.clearValidators();
 			if (keyField == 'label') {
@@ -419,7 +424,10 @@ export class FieldInSectionEditorModel implements FieldInSectionPersist {
 			} else if (keyField == 'referenceTypeId') {
 				if (formGroup.get('category').value === DmpBlueprintFieldCategory.ReferenceType) control?.addValidators([Validators.required, ...context.getValidation('referenceTypeId').validators]);
 				else control?.addValidators([...context.getValidation('referenceTypeId').validators]);
-			} else if (keyField == 'systemFieldType') {
+			} else if (keyField == 'multipleSelect') {
+				if (formGroup.get('category').value === DmpBlueprintFieldCategory.ReferenceType) control?.addValidators([Validators.required, ...context.getValidation('multipleSelect').validators]);
+				else control?.addValidators([...context.getValidation('multipleSelect').validators]);
+			}else if (keyField == 'systemFieldType') {
 				if (formGroup.get('category').value === DmpBlueprintFieldCategory.System) control?.addValidators([Validators.required, ...context.getValidation('systemFieldType').validators]);
 				else control?.addValidators([...context.getValidation('systemFieldType').validators]);
 			} else if (keyField == 'dataType') {

dmp-frontend/src/app/ui/admin/dmp-blueprint/editor/dmp-blueprint-editor.resolver.ts

@@ -42,6 +42,7 @@ export class DmpBlueprintEditorResolver extends BaseEditorResolver {
 			[nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.referenceType), nameof<ReferenceType>(x => x.id)].join('.'),
 			[nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.referenceType), nameof<ReferenceType>(x => x.name)].join('.'),
 			[nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.referenceType), nameof<ReferenceType>(x => x.code)].join('.'),
+			[nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.multipleSelect)].join('.'),
 
 			[nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.descriptionTemplates), nameof<DescriptionTemplatesInSection>(x => x.descriptionTemplateGroupId)].join('.'),
 			[nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.descriptionTemplates), nameof<DescriptionTemplatesInSection>(x => x.label)].join('.'),

dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.component.html

@@ -249,9 +249,12 @@
 														</div>
 													</div>
 													<div *ngIf="field.category === dmpBlueprintSectionFieldCategoryEnum.ReferenceType">
-														<div>
+														<ng-container *ngIf="field.multipleSelect">
-															<app-reference-field-component [form]="formGroup.get('properties').get('dmpBlueprintValues').get(field.id).get('references')" [dependencies]="formGroup.get('properties').get('dmpBlueprintValues')" [label]= "field.label" [placeholder]="field.placeholder ?? field.label" [referenceType]="field.referenceType"></app-reference-field-component>
+															<app-reference-field-component [form]="formGroup.get('properties').get('dmpBlueprintValues').get(field.id).get('references')" [dependencies]="formGroup.get('properties').get('dmpBlueprintValues')" [label]= "field.label" [placeholder]="field.placeholder ?? field.label" [referenceType]="field.referenceType" [multiple]="true"></app-reference-field-component>
-														</div>
+														</ng-container>
+														<ng-container *ngIf="!(field.multipleSelect)">
+															<app-reference-field-component [form]="formGroup.get('properties').get('dmpBlueprintValues').get(field.id).get('reference')" [dependencies]="formGroup.get('properties').get('dmpBlueprintValues')" [label]= "field.label" [placeholder]="field.placeholder ?? field.label" [referenceType]="field.referenceType" [multiple]="false"></app-reference-field-component>
+														</ng-container>
 													</div>
 													<div *ngIf="field.category === dmpBlueprintSectionFieldCategoryEnum.Extra">
 														<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.Text">

dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.model.ts

@@ -6,7 +6,7 @@ import { DmpStatus } from "@app/core/common/enum/dmp-status";
 import { DmpUserRole } from "@app/core/common/enum/dmp-user-role";
 import { DmpUserType } from "@app/core/common/enum/dmp-user-type";
 import { IsActive } from "@app/core/common/enum/is-active.enum";
-import { DmpBlueprint, FieldInSection } from "@app/core/model/dmp-blueprint/dmp-blueprint";
+import { DmpBlueprint, FieldInSection, ReferenceTypeFieldInSection } from "@app/core/model/dmp-blueprint/dmp-blueprint";
 import { Dmp, DmpBlueprintValue, DmpBlueprintValuePersist, DmpContact, DmpContactPersist, DmpDescriptionTemplate, DmpDescriptionTemplatePersist, DmpPersist, DmpProperties, DmpPropertiesPersist, DmpReferenceDataPersist, DmpReferencePersist, DmpUser, DmpUserPersist } from "@app/core/model/dmp/dmp";
 import { DmpReference } from "@app/core/model/dmp/dmp-reference";
 import { ReferencePersist } from "@app/core/model/reference/reference";
@@ -291,7 +291,8 @@ export class DmpPropertiesEditorModel implements DmpPropertiesPersist {
 				formGroup: control as UntypedFormGroup,
 				rootPath: `${rootPath}dmpBlueprintValues[${key}].`,
 				validationErrorModel: validationErrorModel,
-				isRequired: params.blueprint.definition.sections.flatMap(x => x.fields).find(x => x.id.toString() == key).required
+				isRequired: params.blueprint.definition.sections.flatMap(x => x.fields).find(x => x.id.toString() == key).required,
+				multipleSelect: (params.blueprint.definition.sections.flatMap(x => x.fields).find(x => x.id.toString() == key)  as ReferenceTypeFieldInSection).multipleSelect
 			})
 		});
 
@@ -309,7 +310,9 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 	fieldId: Guid;
 	fieldValue: string;
 	references: DmpReferencePersist[] = [];
+	reference: DmpReferencePersist;
 	isRequired: boolean = false;
+	multipleSelect: boolean = false;
 	category: DmpBlueprintFieldCategory;
 
 	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();
@@ -321,7 +324,7 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 	fromModel(item: DmpBlueprintValue, dmpReferences: DmpReference[], field: FieldInSection): DmpBlueprintValueEditorModel {
 		this.fieldId = item.fieldId;
 		this.fieldValue = item.fieldValue;
-		this.references = dmpReferences?.filter(x => x.data.blueprintFieldId == this.fieldId && x.isActive == IsActive.Active).map(x => {
+		const references = dmpReferences?.filter(x => x.data.blueprintFieldId == this.fieldId && x.isActive == IsActive.Active).map(x => {
 			return {
 				data: x.data,
 				reference: {
@@ -337,7 +340,18 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 				}
 			}
 		});
+		if ((field as ReferenceTypeFieldInSection).multipleSelect) {
+			this.references = references;
+			this.multipleSelect = true;
+		} else {
+			if (references?.length == 1) this.reference = references[0];
+			if (references?.length > 1) {
+				console.error("multiple references on single reference field: " + references);
+				this.reference = references[0];
+			}
+			this.multipleSelect = false;
 
+		}
 		this.isRequired = field.required;
 		if (this.isRequired) console.log(field);
 		this.category = field.category;
@@ -355,7 +369,8 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 			context = DmpBlueprintValueEditorModel.createValidationContext({
 				validationErrorModel: this.validationErrorModel,
 				rootPath,
-				isRequired: this.isRequired
+				isRequired: this.isRequired,
+				multipleSelect: this.multipleSelect
 			});
 		}
 
@@ -365,6 +380,7 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 		switch (this.category) {
 			case DmpBlueprintFieldCategory.ReferenceType:
 				formGroup.addControl('references', new FormControl({ value: this.references?.map(x => x.reference), disabled: disabled }, context.getValidation('references').validators));
+				formGroup.addControl('reference', new FormControl({ value: this.reference?.reference, disabled: disabled }, context.getValidation('reference').validators));
 				break;
 			case DmpBlueprintFieldCategory.System:
 			case DmpBlueprintFieldCategory.Extra:
@@ -378,6 +394,7 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 	static createValidationContext(params: {
 		rootPath?: string,
 		validationErrorModel: ValidationErrorModel,
+		multipleSelect: boolean,
 		isRequired: boolean,
 	}): ValidationContext {
 		const { rootPath = '', validationErrorModel } = params;
@@ -386,7 +403,8 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 		const baseValidationArray: Validation[] = new Array<Validation>();
 		baseValidationArray.push({ key: 'fieldId', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}fieldId`)] });
 		baseValidationArray.push({ key: 'fieldValue', validators: params.isRequired ? [Validators.required, BackendErrorValidator(validationErrorModel, `${rootPath}fieldValue`)] : [BackendErrorValidator(validationErrorModel, `${rootPath}fieldValue`)] });
-		baseValidationArray.push({ key: 'references', validators: params.isRequired ? [Validators.required, BackendErrorValidator(validationErrorModel, `${rootPath}references`)] : [BackendErrorValidator(validationErrorModel, `${rootPath}references`)] });
+		baseValidationArray.push({ key: 'references', validators: params.isRequired && params.multipleSelect ? [Validators.required, BackendErrorValidator(validationErrorModel, `${rootPath}references`)] : [BackendErrorValidator(validationErrorModel, `${rootPath}references`)] });
+		baseValidationArray.push({ key: 'reference', validators: params.isRequired && !params.multipleSelect ? [Validators.required, BackendErrorValidator(validationErrorModel, `${rootPath}reference`)] : [BackendErrorValidator(validationErrorModel, `${rootPath}reference`)] });
 
 		baseContext.validation = baseValidationArray;
 		return baseContext;
@@ -397,13 +415,15 @@ export class DmpBlueprintValueEditorModel implements DmpBlueprintValuePersist {
 		validationErrorModel: ValidationErrorModel,
 		rootPath: string,
 		isRequired: boolean
+		multipleSelect: boolean
 	}): void {
 
 		const { formGroup, rootPath, validationErrorModel } = params;
 		const context = DmpBlueprintValueEditorModel.createValidationContext({
 			rootPath,
 			validationErrorModel,
-			isRequired: params.isRequired
+			isRequired: params.isRequired,
+			multipleSelect: params.multipleSelect
 		});
 
 		['fieldId', 'fieldValue', 'references'].forEach(keyField => {

dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.resolver.ts

@@ -121,6 +121,7 @@ export class DmpEditorResolver extends BaseEditorResolver {
 			(prefix ? prefix + '.' : '') + [nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.referenceType), nameof<ReferenceType>(x => x.id)].join('.'),
 			(prefix ? prefix + '.' : '') + [nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.referenceType), nameof<ReferenceType>(x => x.name)].join('.'),
 			(prefix ? prefix + '.' : '') + [nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.referenceType), nameof<ReferenceType>(x => x.code)].join('.'),
+			(prefix ? prefix + '.' : '') + [nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.multipleSelect)].join('.'),
 			(prefix ? prefix + '.' : '') + [nameof<DmpBlueprint>(x => x.definition), nameof<DmpBlueprintDefinition>(x => x.sections), nameof<DmpBlueprintDefinitionSection>(x => x.fields), nameof<ReferenceTypeFieldInSection>(x => x.referenceType), nameof<ReferenceType>(x => x.definition), nameof<ReferenceTypeDefinition>(x=> x.sources), nameof<ExternalFetcherBaseSourceConfiguration>(x=> x.referenceTypeDependencies) , nameof<ReferenceType>(x => x.id)].join('.'),
 		]
 	}

dmp-frontend/src/app/ui/reference/reference-field/reference-field.component.ts

@@ -14,6 +14,7 @@ import { ReferenceSearchLookup } from '@app/core/query/reference-search.lookup';
 import { Guid } from '@common/types/guid';
 import { nameof } from 'ts-simple-nameof';
 import { Subscription } from 'rxjs';
+import { FormService } from '@common/forms/form-service';
 
 @Component({
 	selector: 'app-reference-field-component',
@@ -42,6 +43,7 @@ export class ReferenceFieldComponent extends BaseComponent implements OnInit, On
 	constructor(
 		private referenceService: ReferenceService,
 		public enumUtils: EnumUtils,
+		public formService: FormService,
 		private dialog: MatDialog,
 	) { super(); }
 
@@ -75,7 +77,9 @@ export class ReferenceFieldComponent extends BaseComponent implements OnInit, On
 		const referenceToUse : Reference[]= [];
 		Object.keys(this.dependencies.controls).forEach(controlName => {
 			// (this.dependencies.get(controlName).get('references').value as Reference[]).filter(x=> sourcesWithDependencies.some(y => y.referenceTypeDependencies) x.type.id == this.referenceType.id &&)
-			const foudReferences: any[] = this.dependencies.get(controlName).get('references')?.value;
+			const ctrlValue = this.formService.getValue(this.dependencies.get(controlName).value);
+			const foudReferences: any[] = ctrlValue?.references || [];
+			if (ctrlValue?.reference) foudReferences.push(ctrlValue?.reference);
 			if (foudReferences != null) {
 				for (let i = 0; i < foudReferences.length; i++) {
 					const foudReference = foudReferences[i];
@@ -106,7 +110,7 @@ export class ReferenceFieldComponent extends BaseComponent implements OnInit, On
 		if (!isInitial && (!referenceToUse.map(x => x.reference).every(x => this.referenceToUse.map(y => y.reference).includes(x)) ||
 			!this.referenceToUse.map(x => x.reference).every(x => referenceToUse.map(y => y.reference).includes(x)))) {
 				this.referenceToUse = referenceToUse;
-				this.form.setValue([]);
+				this.form.setValue(this.multiple ? [] : null);
 				this.form.updateValueAndValidity();
 		} else {
 			this.referenceToUse = referenceToUse;
@@ -145,10 +149,14 @@ export class ReferenceFieldComponent extends BaseComponent implements OnInit, On
 					.pipe(takeUntil(this._destroyed))
 					.subscribe(newResult => {
 						if (!newResult) { return; }
+						if (this.multiple) {
 							let results = this.form.value as ReferencePersist[];
 							if (results == undefined) results = [];
 							results.push(newResult);
 							this.form.setValue(results);
+						} else {
+							this.form.setValue(newResult);
+						}
 					});
 			}
 		);

dmp-frontend/src/assets/i18n/de.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Type",
 			"DATATYPE": "Data Type",
 			"REQUIRED": "Pflichtfeld",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Autocomplete Data",
 				"MULTIPLE-AUTOCOMPLETE": "Multiple Autocomplete",

dmp-frontend/src/assets/i18n/en.json

@@ -1355,6 +1355,7 @@
 			"DATA-TYPE": "Data Type",
 			"CATEGORY": "Field Type",
 			"FIELD-REQUIRED": "Required",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"SEMANTICS": "Semantics",
 			"DESCRIPTION-TEMPLATES": "Description Templates",
 			"DESCRIPTION-TEMPLATE": "Description Template",

dmp-frontend/src/assets/i18n/es.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Tipo",
 			"DATATYPE": "Tipo de datos",
 			"REQUIRED": "Obligatorio",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Datos autocompletados",
 				"MULTIPLE-AUTOCOMPLETE": "Multiple Autocomplete",

dmp-frontend/src/assets/i18n/gr.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Τύπος",
 			"DATATYPE": "Τύπος Δεδομένων",
 			"REQUIRED": "Υποχρεωτικά",
+			"FIELD-MULTIPLE-SELECT": "Πολλαπλό",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Αυτόματη Συμπλήρωση Δεδομένων",
 				"MULTIPLE-AUTOCOMPLETE": "Πολλαπλή Αυτόματη Συμπλήρωση",

dmp-frontend/src/assets/i18n/hr.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Vrsta",
 			"DATATYPE": "Tip podataka",
 			"REQUIRED": "Obavezno",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Automatski unos podataka",
 				"MULTIPLE-AUTOCOMPLETE": "Višestruki automatski unos",

dmp-frontend/src/assets/i18n/pl.json

@@ -1020,6 +1020,7 @@
             "TYPE": "Typ",
             "DATATYPE": "Typ danych",
             "REQUIRED": "Wymagane",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
             "EXTERNAL-AUTOCOMPLETE": {
                 "TITLE": "Autouzupełnanie danych",
                 "MULTIPLE-AUTOCOMPLETE": "Wielokrotne autouzupełnianie",

dmp-frontend/src/assets/i18n/pt.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Tipo",
 			"DATATYPE": "Tipo de Dados",
 			"REQUIRED": "Obrigatório",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Autocompletar Dados",
 				"MULTIPLE-AUTOCOMPLETE": "Autopreenchimento Múltiplo",

dmp-frontend/src/assets/i18n/sk.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Typ",
 			"DATATYPE": "Typ dát",
 			"REQUIRED": "Povinné",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Automatické dopĺňanie údajov",
 				"MULTIPLE-AUTOCOMPLETE": "Viacnásobné automatické dokončenie",

dmp-frontend/src/assets/i18n/sr.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Tip",
 			"DATATYPE": "Tip podataka",
 			"REQUIRED": "Obavezno",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Automatski unos podataka",
 				"MULTIPLE-AUTOCOMPLETE": "Višestruki automatski unos",

dmp-frontend/src/assets/i18n/tr.json

@@ -1020,6 +1020,7 @@
 			"TYPE": "Tip",
 			"DATATYPE": "Veri Tipi",
 			"REQUIRED": "Gerekli",
+			"FIELD-MULTIPLE-SELECT": "Multiple",
 			"EXTERNAL-AUTOCOMPLETE": {
 				"TITLE": "Verileri Otomatik Tamamla",
 				"MULTIPLE-AUTOCOMPLETE": "Çoklu Otomatik Tamamlama",

dmp-migration-tool/web/src/main/java/eu/old/eudat/migration/DmpBlueprintXmlMigrationService.java

@@ -183,12 +183,30 @@ public class DmpBlueprintXmlMigrationService {
                 case ACCESS_RIGHTS -> dataTyped.setType(DmpBlueprintSystemFieldType.AccessRights);
                 case CONTACT -> dataTyped.setType(DmpBlueprintSystemFieldType.Contact);
                 case LANGUAGE -> dataTyped.setType(DmpBlueprintSystemFieldType.Language);
-                case FUNDER -> referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Funder);
+                case FUNDER -> {
-                case GRANT -> referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Grants);
+                    referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Funder);
-                case LICENSE -> referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.License);
+                    referenceTypeFieldEntity.setMultipleSelect(false);
-                case ORGANIZATIONS -> referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Organizations);
+                }
-                case PROJECT -> referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Project);
+                case GRANT -> {
-                case RESEARCHERS -> referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Researcher);
+                    referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Grants);
+                    referenceTypeFieldEntity.setMultipleSelect(false);
+                }
+                case LICENSE -> {
+                    referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.License);
+                    referenceTypeFieldEntity.setMultipleSelect(true);
+                }
+                case ORGANIZATIONS -> {
+                    referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Organizations);
+                    referenceTypeFieldEntity.setMultipleSelect(true);
+                }
+                case PROJECT -> {
+                    referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Project);
+                    referenceTypeFieldEntity.setMultipleSelect(false);
+                }
+                case RESEARCHERS -> {
+                    referenceTypeFieldEntity.setReferenceTypeId(ReferenceTypeIds.Researcher);
+                    referenceTypeFieldEntity.setMultipleSelect(true);
+                }
                 default -> throw  new MyApplicationException("Type not found " + systemField.getType());
             }
             if (systemField.getType().equals(SystemFieldType.TEXT) || systemField.getType().equals(SystemFieldType.HTML_TEXT) ||