Examples with MetaCollectionType io.crnk.meta.model.MetaCollectionType used on opensource projects

Example 1 with MetaCollectionType

use of io.crnk.meta.model.MetaCollectionType in project crnk-framework by crnk-project.

the class ResourceMetaFilter method onInitialized.

@Override
public void onInitialized(MetaElement element) {
    if (element instanceof MetaResourceBase) {
        MetaResourceBase metaResource = (MetaResourceBase) element;
        ResourceInformation information = getResourceInformation(metaResource, true);
        PreconditionUtil.assertNotNull(information.getResourceType(), metaResource);
        for (ResourceField field : information.getRelationshipFields()) {
            if (field.getOppositeName() != null) {
                String oppositeType = field.getOppositeResourceType();
                MetaResource oppositeMeta = (MetaResource) context.getMetaElement(partition.getId(oppositeType)).get();
                MetaAttribute attr = metaResource.getAttribute(field.getUnderlyingName());
                MetaAttribute oppositeAttr = oppositeMeta.getAttribute(field.getOppositeName());
                PreconditionUtil.assertNotNull(attr.getId() + " opposite not found", oppositeAttr);
                attr.setOppositeAttribute(oppositeAttr);
            }
        }
        ResourceField idField = information.getIdField();
        if (idField != null) {
            MetaAttribute idAttr = metaResource.getAttribute(idField.getUnderlyingName());
            idAttr.setPrimaryKeyAttribute(true);
            if (metaResource.getSuperType() == null || metaResource.getSuperType().getPrimaryKey() == null) {
                MetaPrimaryKey primaryKey = new MetaPrimaryKey();
                primaryKey.setName(metaResource.getName() + "$primaryKey");
                primaryKey.setName(metaResource.getId() + "$primaryKey");
                primaryKey.setElements(Arrays.asList(idAttr));
                primaryKey.setUnique(true);
                primaryKey.setParent(metaResource, true);
                metaResource.setPrimaryKey(primaryKey);
                partition.addElement(null, primaryKey);
            }
        }
    }
    if (element instanceof MetaAttribute && element.getParent() instanceof MetaResourceBase) {
        MetaAttribute attr = (MetaAttribute) element;
        MetaResourceBase parent = (MetaResourceBase) attr.getParent();
        ResourceInformation information = getResourceInformation(parent, true);
        ResourceField field = information.findFieldByUnderlyingName(attr.getName());
        PreconditionUtil.assertNotNull(attr.getName(), field);
        if (field.getResourceFieldType() == ResourceFieldType.RELATIONSHIP) {
            String oppositeType = field.getOppositeResourceType();
            String oppositeId = partition.getId(oppositeType);
            Optional<MetaElement> optOppositeMeta = context.getMetaElement(oppositeId);
            if (!optOppositeMeta.isPresent()) {
                throw new IllegalStateException("opposite meta element '" + oppositeId + "' for element '" + element.getId() + "' not found");
            }
            MetaResource oppositeMeta = (MetaResource) optOppositeMeta.get();
            if (field.isCollection()) {
                boolean isSet = Set.class.isAssignableFrom(field.getType());
                String suffix = (isSet ? "$set" : "$list");
                Optional<MetaElement> optMetaCollection = context.getMetaElement(oppositeId + suffix);
                MetaCollectionType metaCollection;
                if (optMetaCollection.isPresent()) {
                    metaCollection = (MetaCollectionType) optMetaCollection.get();
                } else {
                    metaCollection = isSet ? new MetaSetType() : new MetaListType();
                    metaCollection.setId(oppositeMeta.getId() + suffix);
                    metaCollection.setName(oppositeMeta.getName() + suffix);
                    metaCollection.setImplementationType(field.getGenericType());
                    metaCollection.setElementType(oppositeMeta);
                    partition.addElement(null, metaCollection);
                }
                attr.setType(metaCollection);
            } else {
                attr.setType(oppositeMeta);
            }
        } else {
            Type implementationType = field.getGenericType();
            MetaElement metaType = partition.allocateMetaElement(implementationType).get();
            attr.setType(metaType.asType());
        }
    } else if (element instanceof MetaAttribute && element.getParent() instanceof MetaJsonObject) {
        MetaAttribute attr = (MetaAttribute) element;
        MetaDataObject parent = attr.getParent();
        Type implementationType = PropertyUtils.getPropertyType(parent.getImplementationClass(), attr.getName());
        MetaElement metaType = partition.allocateMetaElement(implementationType).get();
        attr.setType(metaType.asType());
    }
}

Example 2 with MetaCollectionType

use of io.crnk.meta.model.MetaCollectionType in project crnk-framework by crnk-project.

the class JpaMetaProviderAttributeTest method testRelationMany.

@Test
public void testRelationMany() {
    MetaEntity meta = metaProvider.discoverMeta(TestEntity.class);
    MetaAttribute attr = meta.getAttribute(TestEntity.ATTR_manyRelatedValues);
    Assert.assertTrue(attr.isAssociation());
    Assert.assertEquals(TestEntity.ATTR_manyRelatedValues, attr.getName());
    Assert.assertEquals(TestEntity.class.getName() + "." + TestEntity.ATTR_manyRelatedValues, attr.getId());
    Assert.assertFalse(attr.isDerived());
    Assert.assertFalse(attr.isVersion());
    Assert.assertTrue(attr.isLazy());
    Assert.assertNotNull(attr.getOppositeAttribute());
    MetaCollectionType colType = attr.getType().asCollection();
    Assert.assertTrue(colType.isCollection());
    Assert.assertEquals(RelatedEntity.class, colType.getElementType().getImplementationClass());
    Assert.assertEquals(RelatedEntity.class, attr.getType().getElementType().getImplementationClass());
}