Examples with ObjEntity org.apache.cayenne.map.ObjEntity used on opensource projects

Example 6 with ObjEntity

use of org.apache.cayenne.map.ObjEntity in project cayenne by apache.

the class DataContext method objectFromDataRow.

/**
 * Creates a DataObject from DataRow.
 *
 * @see DataRow
 * @since 3.1
 */
public <T extends Persistent> T objectFromDataRow(Class<T> objectClass, DataRow dataRow) {
    ObjEntity entity = this.getEntityResolver().getObjEntity(objectClass);
    if (entity == null) {
        throw new CayenneRuntimeException("Unmapped Java class: %s", objectClass);
    }
    ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(entity.getName());
    List<T> list = objectsFromDataRows(descriptor, Collections.singletonList(dataRow));
    return list.get(0);
}

Example 7 with ObjEntity

use of org.apache.cayenne.map.ObjEntity in project cayenne by apache.

the class DataContext method registerNewObject.

/**
 * Registers a transient object with the context, recursively registering
 * all transient persistent objects attached to this object via
 * relationships.
 * <p>
 * <i>Note that since 3.0 this method takes Object as an argument instead of
 * a {@link DataObject}.</i>
 *
 * @param object
 *            new object that needs to be made persistent.
 */
@Override
public void registerNewObject(Object object) {
    if (object == null) {
        throw new NullPointerException("Can't register null object.");
    }
    ObjEntity entity = getEntityResolver().getObjEntity((Persistent) object);
    if (entity == null) {
        throw new IllegalArgumentException("Can't find ObjEntity for Persistent class: " + object.getClass().getName() + ", class is likely not mapped.");
    }
    final Persistent persistent = (Persistent) object;
    // sanity check - maybe already registered
    if (persistent.getObjectId() != null) {
        if (persistent.getObjectContext() == this) {
            // already registered, just ignore
            return;
        } else if (persistent.getObjectContext() != null) {
            throw new IllegalStateException("Persistent is already registered with another DataContext. " + "Try using 'localObjects()' instead.");
        }
    } else {
        persistent.setObjectId(ObjectId.of(entity.getName()));
    }
    ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(entity.getName());
    if (descriptor == null) {
        throw new IllegalArgumentException("Invalid entity name: " + entity.getName());
    }
    injectInitialValue(object);
    // now we need to find all arc changes, inject missing value holders and
    // pull in
    // all transient connected objects
    descriptor.visitProperties(new PropertyVisitor() {

        public boolean visitToMany(ToManyProperty property) {
            property.injectValueHolder(persistent);
            if (!property.isFault(persistent)) {
                Object value = property.readProperty(persistent);
                @SuppressWarnings("unchecked") Collection<Map.Entry> collection = (value instanceof Map) ? ((Map) value).entrySet() : (Collection) value;
                for (Object target : collection) {
                    if (target instanceof Persistent) {
                        Persistent targetDO = (Persistent) target;
                        // make sure it is registered
                        registerNewObject(targetDO);
                        getObjectStore().arcCreated(persistent.getObjectId(), targetDO.getObjectId(), new ArcId(property));
                    }
                }
            }
            return true;
        }

        public boolean visitToOne(ToOneProperty property) {
            Object target = property.readPropertyDirectly(persistent);
            if (target instanceof Persistent) {
                Persistent targetDO = (Persistent) target;
                // make sure it is registered
                registerNewObject(targetDO);
                getObjectStore().arcCreated(persistent.getObjectId(), targetDO.getObjectId(), new ArcId(property));
            }
            return true;
        }

        public boolean visitAttribute(AttributeProperty property) {
            return true;
        }
    });
}

Example 8 with ObjEntity

use of org.apache.cayenne.map.ObjEntity in project cayenne by apache.

the class BaseDataObject method validateForSave.

/**
 * Performs property validation of the object, appending any validation
 * failures to the provided validationResult object. This method is invoked
 * from "validateFor.." before committing a NEW or MODIFIED object to the
 * database. Validation includes checking for null values and value sizes.
 * CayenneDataObject subclasses may override this method, calling super.
 *
 * @since 1.1
 */
protected void validateForSave(ValidationResult validationResult) {
    ObjEntity objEntity = getObjectContext().getEntityResolver().getObjEntity(this);
    if (objEntity == null) {
        throw new CayenneRuntimeException("No ObjEntity mapping found for DataObject %s", getClass().getName());
    }
    // validate mandatory attributes
    Map<String, ValidationFailure> failedDbAttributes = null;
    for (ObjAttribute next : objEntity.getAttributes()) {
        // TODO: andrus, 2/20/2007 - handle embedded attribute
        if (next instanceof EmbeddedAttribute) {
            continue;
        }
        DbAttribute dbAttribute = next.getDbAttribute();
        if (dbAttribute == null) {
            throw new CayenneRuntimeException("ObjAttribute '%s" + "' does not have a corresponding DbAttribute", next.getName());
        }
        // pk may still be generated
        if (dbAttribute.isPrimaryKey()) {
            continue;
        }
        Object value = this.readPropertyDirectly(next.getName());
        if (dbAttribute.isMandatory()) {
            ValidationFailure failure = BeanValidationFailure.validateNotNull(this, next.getName(), value);
            if (failure != null) {
                if (failedDbAttributes == null) {
                    failedDbAttributes = new HashMap<>();
                }
                failedDbAttributes.put(dbAttribute.getName(), failure);
                continue;
            }
        }
        // validate length
        if (value != null && dbAttribute.getMaxLength() > 0) {
            if (value.getClass().isArray()) {
                int len = Array.getLength(value);
                if (len > dbAttribute.getMaxLength()) {
                    String message = "\"" + next.getName() + "\" exceeds maximum allowed length (" + dbAttribute.getMaxLength() + " bytes): " + len;
                    validationResult.addFailure(new BeanValidationFailure(this, next.getName(), message));
                }
            } else if (value instanceof CharSequence) {
                int len = ((CharSequence) value).length();
                if (len > dbAttribute.getMaxLength()) {
                    String message = "\"" + next.getName() + "\" exceeds maximum allowed length (" + dbAttribute.getMaxLength() + " chars): " + len;
                    validationResult.addFailure(new BeanValidationFailure(this, next.getName(), message));
                }
            }
        }
    }
    // validate mandatory relationships
    for (final ObjRelationship relationship : objEntity.getRelationships()) {
        List<DbRelationship> dbRels = relationship.getDbRelationships();
        if (dbRels.isEmpty()) {
            continue;
        }
        // see ObjRelationship.recalculateReadOnlyValue() for more info
        if (relationship.isSourceIndependentFromTargetChange()) {
            continue;
        }
        // if db relationship is not based on a PK and is based on mandatory
        // attributes, see if we have a target object set
        // relationship will be validated only if all db path has mandatory
        // db relationships
        boolean validate = true;
        for (DbRelationship dbRelationship : dbRels) {
            for (DbJoin join : dbRelationship.getJoins()) {
                DbAttribute source = join.getSource();
                if (source.isMandatory()) {
                    // clear attribute failures...
                    if (failedDbAttributes != null && !failedDbAttributes.isEmpty()) {
                        failedDbAttributes.remove(source.getName());
                    }
                } else {
                    // do not validate if the relation is based on
                    // multiple keys with some that can be nullable.
                    validate = false;
                }
            }
        }
        if (validate) {
            Object value = this.readPropertyDirectly(relationship.getName());
            ValidationFailure failure = BeanValidationFailure.validateNotNull(this, relationship.getName(), value);
            if (failure != null) {
                validationResult.addFailure(failure);
            }
        }
    }
    // deal with previously found attribute failures...
    if (failedDbAttributes != null && !failedDbAttributes.isEmpty()) {
        for (ValidationFailure failure : failedDbAttributes.values()) {
            validationResult.addFailure(failure);
        }
    }
}

Example 9 with ObjEntity

use of org.apache.cayenne.map.ObjEntity in project cayenne by apache.

the class BaseDataObject method unsetReverseRelationship.

/**
 * Removes current object from reverse relationship of object
 * <code>val</code> to this object.
 */
protected void unsetReverseRelationship(String relName, DataObject val) {
    EntityResolver resolver = objectContext.getEntityResolver();
    ObjEntity entity = resolver.getObjEntity(objectId.getEntityName());
    if (entity == null) {
        throw new IllegalStateException("DataObject's entity is unmapped, objectId: " + objectId);
    }
    ObjRelationship rel = entity.getRelationship(relName);
    ObjRelationship revRel = rel.getReverseRelationship();
    if (revRel != null) {
        if (revRel.isToMany()) {
            val.removeToManyTarget(revRel.getName(), this, false);
        } else {
            val.setToOneTarget(revRel.getName(), null, false);
        }
    }
}

Example 10 with ObjEntity

use of org.apache.cayenne.map.ObjEntity in project cayenne by apache.

the class BaseContext method injectInitialValue.

/**
 * If ObjEntity qualifier is set, asks it to inject initial value to an
 * object. Also performs all Persistent initialization operations
 */
protected void injectInitialValue(Object obj) {
    // must follow this exact order of property initialization per CAY-653,
    // i.e. have
    // the id and the context in place BEFORE setPersistence is called
    Persistent object = (Persistent) obj;
    object.setObjectContext(this);
    object.setPersistenceState(PersistenceState.NEW);
    GraphManager graphManager = getGraphManager();
    synchronized (graphManager) {
        graphManager.registerNode(object.getObjectId(), object);
        graphManager.nodeCreated(object.getObjectId());
    }
    ObjEntity entity;
    try {
        entity = getEntityResolver().getObjEntity(object.getClass());
    } catch (CayenneRuntimeException ex) {
        // ObjEntity cannot be fetched, ignored
        entity = null;
    }
    if (entity != null) {
        if (entity.getDeclaredQualifier() instanceof ValueInjector) {
            ((ValueInjector) entity.getDeclaredQualifier()).injectValue(object);
        }
    }
    // invoke callbacks
    getEntityResolver().getCallbackRegistry().performCallbacks(LifecycleEvent.POST_ADD, object);
}