Examples with FetchPlan io.jmix.core.FetchPlan used on opensource projects

Example 61 with FetchPlan

use of io.jmix.core.FetchPlan in project jmix by jmix-framework.

the class ResponseBuilder method buildResponse.

/**
 * Convert loaded entity to data fetcher return format (Map<String, Object>)
 *
 * @param entity loaded entity
 * @param fetchPlan loaded entity properties
 * @param metaClass entity meta class
 * @param props we need pass full set of properties to have information about system props such '_instanceName'
 * @return entity converted to response as Map<String, Object>
 */
public Map<String, Object> buildResponse(Entity entity, FetchPlan fetchPlan, MetaClass metaClass, Set<String> props) {
    Map<String, Object> entityAsMap = new HashMap<>();
    // check and evaluate _instanceName, if required
    if (environmentUtils.hasInstanceNameProperty(props)) {
        entityAsMap.put(NamingUtils.SYS_ATTR_INSTANCE_NAME, metadataTools.getInstanceName(entity));
    }
    // must include id
    writeIdField(entity, entityAsMap);
    // compose result object by iterating over fetch plan props
    fetchPlan.getProperties().forEach(prop -> {
        String propName = prop.getName();
        MetaProperty metaProperty = metaClass.getProperty(propName);
        Object fieldValue = EntityValues.getValue(entity, propName);
        Range propertyRange = metaProperty.getRange();
        if (fieldValue == null) {
            entityAsMap.put(propName, null);
            return;
        }
        if (propertyRange.isDatatype() || propertyRange.isEnum()) {
            entityAsMap.put(propName, fieldValue);
            return;
        }
        if (propertyRange.isClass()) {
            Set<String> nestedProps = environmentUtils.getNestedProps(props, propName);
            if (fieldValue instanceof Entity) {
                entityAsMap.put(propName, buildResponse((Entity) fieldValue, prop.getFetchPlan(), propertyRange.asClass(), nestedProps));
                return;
            }
            if (fieldValue instanceof Collection) {
                Collection<Object> values = ((Collection<Entity>) fieldValue).stream().map(e -> buildResponse(e, prop.getFetchPlan(), propertyRange.asClass(), nestedProps)).collect(Collectors.toList());
                entityAsMap.put(propName, values);
                return;
            }
        }
        log.warn("buildResponse: failed for {}.{} unsupported range type ", metaClass.getName(), prop.getName());
        throw new IllegalStateException("Unsupported range type " + propertyRange);
    });
    return entityAsMap;
}