Examples with ObjectId org.apache.cayenne.ObjectId used on opensource projects

Example 71 with ObjectId

use of org.apache.cayenne.ObjectId in project cayenne by apache.

the class ObjectContextQueryAction method interceptRelationshipQuery.

protected boolean interceptRelationshipQuery() {
    if (query instanceof RelationshipQuery) {
        RelationshipQuery relationshipQuery = (RelationshipQuery) query;
        if (!relationshipQuery.isRefreshing()) {
            if (targetContext == null && relationshipQuery.getRelationship(actingContext.getEntityResolver()).isToMany()) {
                return !DONE;
            }
            ObjectId id = relationshipQuery.getObjectId();
            Object object = actingContext.getGraphManager().getNode(id);
            if (object != null) {
                ClassDescriptor descriptor = actingContext.getEntityResolver().getClassDescriptor(id.getEntityName());
                if (!descriptor.isFault(object)) {
                    ArcProperty property = (ArcProperty) descriptor.getProperty(relationshipQuery.getRelationshipName());
                    if (!property.isFault(object)) {
                        Object related = property.readPropertyDirectly(object);
                        List result;
                        // null to-one
                        if (related == null) {
                            result = new ArrayList(1);
                        } else // to-many List
                        if (related instanceof List) {
                            result = (List) related;
                        } else // to-many Set
                        if (related instanceof Set) {
                            result = new ArrayList((Set) related);
                        } else // to-many Map
                        if (related instanceof Map) {
                            result = new ArrayList(((Map) related).values());
                        } else // non-null to-one
                        {
                            result = new ArrayList(1);
                            result.add(related);
                        }
                        this.response = new ListResponse(result);
                        return DONE;
                    }
                    /**
                     * Workaround for CAY-1183. If a Relationship query is being sent
                     * from child context, we assure that local object is not NEW and
                     * relationship - unresolved (this way exception will occur). This
                     * helps when faulting objects that were committed to parent
                     * context (this), but not to database. Checking type of context's
                     * channel is the only way to ensure that we are on the top level
                     * of context hierarchy (there might be more than one-level-deep
                     * nested contexts).
                     */
                    if (((Persistent) object).getPersistenceState() == PersistenceState.NEW && !(actingContext.getChannel() instanceof BaseContext)) {
                        this.response = new ListResponse();
                        return DONE;
                    }
                }
            }
        }
    }
    return !DONE;
}

Example 72 with ObjectId

use of org.apache.cayenne.ObjectId in project cayenne by apache.

the class ObjectDetachOperation method detach.

/**
 * "Detaches" an object from its context by creating an unattached copy. The copy is
 * created using target descriptor of this operation that may be different from the
 * object descriptor passed to this method.
 */
public Object detach(Object object, ClassDescriptor descriptor, final PrefetchTreeNode prefetchTree) {
    if (!(object instanceof Persistent)) {
        throw new CayenneRuntimeException("Expected Persistent, got: %s", object);
    }
    final Persistent source = (Persistent) object;
    ObjectId id = source.getObjectId();
    // sanity check
    if (id == null) {
        throw new CayenneRuntimeException("Server returned an object without an id: %s", source);
    }
    Object seenTarget = seen.get(id);
    if (seenTarget != null) {
        return seenTarget;
    }
    descriptor = descriptor.getSubclassDescriptor(source.getClass());
    // presumably id's entity name should be of the right subclass.
    final ClassDescriptor targetDescriptor = targetResolver.getClassDescriptor(id.getEntityName());
    final Persistent target = (Persistent) targetDescriptor.createObject();
    target.setObjectId(id);
    seen.put(id, target);
    descriptor.visitProperties(new PropertyVisitor() {

        private void fillReverseRelationship(Object destinationTarget, ArcProperty property) {
            ArcProperty clientProperty = (ArcProperty) targetDescriptor.getProperty(property.getName());
            if (clientProperty != null) {
                ArcProperty clientReverse = clientProperty.getComplimentaryReverseArc();
                if (clientReverse instanceof ToOneProperty) {
                    clientReverse.writeProperty(destinationTarget, null, target);
                }
            }
        }

        public boolean visitToOne(ToOneProperty property) {
            if (prefetchTree != null) {
                PrefetchTreeNode child = prefetchTree.getNode(property.getName());
                if (child != null) {
                    Object destinationSource = property.readProperty(source);
                    Object destinationTarget = destinationSource != null ? detach(destinationSource, property.getTargetDescriptor(), child) : null;
                    if (destinationTarget != null) {
                        fillReverseRelationship(destinationTarget, property);
                    }
                    ToOneProperty targetProperty = (ToOneProperty) targetDescriptor.getProperty(property.getName());
                    Object oldTarget = targetProperty.isFault(target) ? null : targetProperty.readProperty(target);
                    targetProperty.writeProperty(target, oldTarget, destinationTarget);
                }
            }
            return true;
        }

        public boolean visitToMany(ToManyProperty property) {
            if (prefetchTree != null) {
                PrefetchTreeNode child = prefetchTree.getNode(property.getName());
                if (child != null) {
                    Object value = property.readProperty(source);
                    Object targetValue;
                    if (property instanceof ToManyMapProperty) {
                        Map<?, ?> map = (Map) value;
                        Map targetMap = new HashMap();
                        for (Entry entry : map.entrySet()) {
                            Object destinationSource = entry.getValue();
                            Object destinationTarget = destinationSource != null ? detach(destinationSource, property.getTargetDescriptor(), child) : null;
                            if (destinationTarget != null) {
                                fillReverseRelationship(destinationTarget, property);
                            }
                            targetMap.put(entry.getKey(), destinationTarget);
                        }
                        targetValue = targetMap;
                    } else {
                        Collection collection = (Collection) value;
                        Collection targetCollection = new ArrayList(collection.size());
                        for (Object destinationSource : collection) {
                            Object destinationTarget = destinationSource != null ? detach(destinationSource, property.getTargetDescriptor(), child) : null;
                            if (destinationTarget != null) {
                                fillReverseRelationship(destinationTarget, property);
                            }
                            targetCollection.add(destinationTarget);
                        }
                        targetValue = targetCollection;
                    }
                    ToManyProperty targetProperty = (ToManyProperty) targetDescriptor.getProperty(property.getName());
                    targetProperty.writeProperty(target, null, targetValue);
                }
            }
            return true;
        }

        public boolean visitAttribute(AttributeProperty property) {
            PropertyDescriptor targetProperty = targetDescriptor.getProperty(property.getName());
            targetProperty.writeProperty(target, null, property.readProperty(source));
            return true;
        }
    });
    return target;
}

Example 73 with ObjectId

use of org.apache.cayenne.ObjectId in project cayenne by apache.

the class ShallowMergeOperation method merge.

public <T extends Persistent> T merge(T peerInParentContext) {
    if (peerInParentContext == null) {
        throw new IllegalArgumentException("Null peerInParentContext");
    }
    // handling of HOLLOW peer state is here for completeness... Wonder if we ever
    // have a case where it is applicable.
    int peerState = peerInParentContext.getPersistenceState();
    ObjectId id = peerInParentContext.getObjectId();
    ClassDescriptor descriptor = context.getEntityResolver().getClassDescriptor(id.getEntityName());
    GraphManager graphManager = context.getGraphManager();
    // messing up dataobjects per CAY-845.
    synchronized (graphManager) {
        T object = (T) graphManager.getNode(id);
        // merge into an existing object
        if (object == null) {
            object = (T) descriptor.createObject();
            object.setObjectContext(context);
            object.setObjectId(id);
            if (peerState == PersistenceState.HOLLOW) {
                object.setPersistenceState(PersistenceState.HOLLOW);
            } else {
                object.setPersistenceState(PersistenceState.COMMITTED);
            }
            graphManager.registerNode(id, object);
        }
        // TODO: Andrus, 1/24/2006 implement smart merge for modified objects...
        if (peerState != PersistenceState.HOLLOW && object.getPersistenceState() != PersistenceState.MODIFIED && object.getPersistenceState() != PersistenceState.DELETED) {
            descriptor.shallowMerge(peerInParentContext, object);
            if (object.getPersistenceState() == PersistenceState.HOLLOW) {
                object.setPersistenceState(PersistenceState.COMMITTED);
            }
        }
        return object;
    }
}

Example 74 with ObjectId

use of org.apache.cayenne.ObjectId in project cayenne by apache.

the class SimpleNode method encodeScalarAsEJBQL.

/**
 * <p>
 * This is a utility method that can represent the supplied scalar as either
 * an EJBQL literal into the supplied {@link java.io.PrintWriter} or is able
 * to add the scalar to the parameters and to instead write a positional
 * parameter to the EJBQL written to the {@link java.io.PrintWriter}. If the
 * parameters are null and the scalar object is not able to be represented
 * as an EJBQL literal then the method will throw a runtime exception to
 * indicate that it has failed to produce valid EJBQL.
 * </p>
 */
protected static void encodeScalarAsEJBQL(List<Object> parameterAccumulator, Appendable out, Object scalar) throws IOException {
    if (null == scalar) {
        out.append("null");
        return;
    }
    if (scalar instanceof Boolean) {
        if ((Boolean) scalar) {
            out.append("true");
        } else {
            out.append("false");
        }
        return;
    }
    if (null != parameterAccumulator) {
        parameterAccumulator.add(scalar);
        out.append('?');
        // parameters start at 1
        out.append(Integer.toString(parameterAccumulator.size()));
        return;
    }
    if (scalar instanceof Integer || scalar instanceof Long || scalar instanceof Float || scalar instanceof Double) {
        out.append(scalar.toString());
        return;
    }
    if (scalar instanceof Persistent) {
        ObjectId id = ((Persistent) scalar).getObjectId();
        Object encode = (id != null) ? id : scalar;
        appendAsEscapedString(out, String.valueOf(encode));
        return;
    }
    if (scalar instanceof Enum<?>) {
        Enum<?> e = (Enum<?>) scalar;
        out.append("enum:");
        out.append(e.getClass().getName()).append(".").append(e.name());
        return;
    }
    if (scalar instanceof String) {
        out.append('\'');
        appendAsEscapedString(out, scalar.toString());
        out.append('\'');
        return;
    }
    throw new IllegalStateException("the scalar type '" + scalar.getClass().getSimpleName() + "' is not supported as a scalar type in EJBQL");
}

Example 75 with ObjectId

use of org.apache.cayenne.ObjectId in project cayenne by apache.

the class SimpleNode method appendScalarAsString.

/**
 * Utility method that encodes an object that is not an expression Node to
 * String.
 */
protected static void appendScalarAsString(Appendable out, Object scalar, char quoteChar) throws IOException {
    boolean quote = scalar instanceof String;
    if (quote) {
        out.append(quoteChar);
    }
    // TODO: should we use UUID here?
    if (scalar instanceof Persistent) {
        ObjectId id = ((Persistent) scalar).getObjectId();
        Object encode = (id != null) ? id : scalar;
        appendAsEscapedString(out, String.valueOf(encode));
    } else if (scalar instanceof Enum<?>) {
        Enum<?> e = (Enum<?>) scalar;
        out.append("enum:");
        out.append(e.getClass().getName()).append(".").append(e.name());
    } else {
        appendAsEscapedString(out, String.valueOf(scalar));
    }
    if (quote) {
        out.append(quoteChar);
    }
}