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    • org.umlg.runtime.adaptor.UmlgTransactionEventHandlerImpl Maven / Gradle / Ivy

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    package org.umlg.runtime.adaptor;

import org.apache.tinkerpop.gremlin.structure.VertexProperty;
import org.umlg.runtime.collection.UmlgCollection;
import org.umlg.runtime.domain.AssociationClassNode;
import org.umlg.runtime.domain.UmlgNode;
import org.umlg.runtime.notification.ChangeHolder;
import org.umlg.runtime.notification.NotificationListener;
import org.umlg.runtime.validation.UmlgConstraintViolation;
import org.umlg.runtime.validation.UmlgConstraintViolationException;

import java.util.List;
import java.util.Map;

/**
 * This class validates what is being committed.
 * On every UmlgNode is calls validateMultiplicities.
 * futher it validates that a non root class has one and only one composite parent
 */
public class UmlgTransactionEventHandlerImpl implements UmlgTransactionEventHandler {

    public UmlgTransactionEventHandlerImpl() {
        super();
    }

    @Override
    public void beforeCommit() {
        try {
            if (!TransactionThreadBypassValidationVar.get() && UMLG.get() != null && !UMLG.get().isInBatchMode()) {
//                ((UmlgAdminGraph) UMLG.get()).incrementTransactionCount();
                List entities = TransactionThreadEntityVar.get();
                for (UmlgNode umlgNode : entities) {
                    if (umlgNode instanceof AssociationClassNode) {
                        VertexProperty vertexProperty = umlgNode.getVertex().property(UmlgCollection.ASSOCIATION_CLASS_EDGE_ID);
                        if (!vertexProperty.isPresent() || vertexProperty.value() == null) {
                            throw new IllegalStateException(String.format("AssociationClass entity %s %s property %s is not set. This happens when the association end is a Set and was already present.", umlgNode.getClass().getSimpleName(), umlgNode.getId(), UmlgCollection.ASSOCIATION_CLASS_EDGE_ID));
                        }
                    }
                    List requiredConstraintViolations = umlgNode.validateMultiplicities();
                    requiredConstraintViolations.addAll(umlgNode.checkClassConstraints());
                    if (!requiredConstraintViolations.isEmpty()) {
                        throw new UmlgConstraintViolationException(requiredConstraintViolations);
                    }
                    if (!umlgNode.isTinkerRoot() && (!umlgNode.hasOnlyOneCompositeParent() || umlgNode.getOwningObject() == null)) {
                        throw new IllegalStateException(String.format("Entity %s %s does not have a composite owner", umlgNode.getClass().getSimpleName(), umlgNode.getId()));
                    }
                    umlgNode.doBeforeCommit();
                }
                for (Map.Entry> notificationListenerSetEntry : TransactionThreadNotificationVar.get().entrySet()) {
                    NotificationListener notificationListener = notificationListenerSetEntry.getKey();
                    List changeHolders = notificationListenerSetEntry.getValue();
                    for (ChangeHolder changeHolder : changeHolders) {
                        notificationListener.notifyChanged(
                                NotificationListener.COMMIT_TYPE.BEFORE_COMMIT,
                                changeHolder.getUmlgNode(),
                                changeHolder.getUmlgRuntimeProperty(),
                                changeHolder.getChangeType(),
                                changeHolder.getValue());
                    }
                }
            }
        } finally {
            TransactionThreadEntityVar.remove();
            TransactionThreadBypassValidationVar.remove();
            TransactionThreadMetaNodeVar.remove();
            TransactionThreadBypassValidationVar.remove();
        }
    }

    @Override
    public void afterCommit() {
        try {
            for (Map.Entry> notificationListenerSetEntry : TransactionThreadNotificationVar.get().entrySet()) {
                NotificationListener notificationListener = notificationListenerSetEntry.getKey();
                List changeHolders = notificationListenerSetEntry.getValue();
                for (ChangeHolder changeHolder : changeHolders) {
                    new Thread(() -> {
                        notificationListener.notifyChanged(
                                NotificationListener.COMMIT_TYPE.AFTER_COMMIT,
                                changeHolder.getUmlgNode(),
                                changeHolder.getUmlgRuntimeProperty(),
                                changeHolder.getChangeType(),
                                changeHolder.getValue());
                    }, changeHolder.getUmlgNode().getQualifiedName() + changeHolder.getUmlgRuntimeProperty().getQualifiedName()).start();
                }
            }
        } finally {
            TransactionThreadNotificationVar.remove();
        }
    }

}
    
    
    
    

    




    
    
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