org.umlg.runtime.collection.persistent.UmlgAssociationClassBagImpl Maven / Gradle / Ivy
package org.umlg.runtime.collection.persistent;
import org.apache.tinkerpop.gremlin.structure.Edge;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils;
import org.umlg.runtime.adaptor.UMLG;
import org.umlg.runtime.collection.UmlgCollection;
import org.umlg.runtime.collection.UmlgRuntimeProperty;
import org.umlg.runtime.domain.UmlgNode;
import org.umlg.runtime.util.PathTree;
import java.util.Iterator;
import java.util.List;
/**
* This set is used for navigating from a class to its related association classes.
* Date: 2013/06/22
* Time: 10:08 AM
*/
public class UmlgAssociationClassBagImpl extends UmlgBagImpl {
private PropertyTree associationClassPropertyTree;
public UmlgAssociationClassBagImpl(UmlgNode owner, PropertyTree propertyTree, PropertyTree associationClassPropertyTree) {
super(owner, propertyTree);
this.associationClassPropertyTree = associationClassPropertyTree;
}
public UmlgAssociationClassBagImpl(UmlgNode owner, PropertyTree propertyTree, PropertyTree associationClassPropertyTree, boolean loaded) {
super(owner, propertyTree, loaded);
this.associationClassPropertyTree = associationClassPropertyTree;
}
public UmlgAssociationClassBagImpl(UmlgNode owner, UmlgRuntimeProperty runtimeProperty) {
super(owner, runtimeProperty);
}
@Override
protected void loadUmlgNodes() {
List pathTrees = this.propertyTree.traversal(UMLG.get().getUnderlyingGraph(), this.vertex);
for (PathTree pathTree : pathTrees) {
try {
pathTree.loadUmlgAssociationClassNodes(owner, this.associationClassPropertyTree);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
/**
* This gets invoked from the opposite side in addInternal.
* It is called before the edge is created so the new element will not be loaded by loadFromVertex
*
* @param e
* @return
*/
@Override
public boolean inverseAdder(AssociationClassNode e) {
if (!this.loaded) {
//Do not call the regular loadFromVertex
//Association classes are loaded via the edge to the member end.
//On inverseAdder that edge exist but the association class vertex has not yet been set as we do not want
//to load the AssociationClass from the db.
//The point of the inverseAdder is to keep the current object in memory
associationClassLoadFromVertex();
}
return this.internalCollection.add(e);
}
@SuppressWarnings({"unchecked", "rawtypes"})
private void associationClassLoadFromVertex() {
if (!isOnePrimitive() && getDataTypeEnum() == null) {
for (Iterator iter = getEdges(); iter.hasNext(); ) {
Edge edge = iter.next();
if (IteratorUtils.list(edge.properties()).contains(UmlgCollection.ASSOCIATION_CLASS_VERTEX_ID)) {
AssociationClassNode node;
try {
Class c = this.getClassToInstantiate(edge);
if (c.isEnum()) {
throw new RuntimeException();
// Object value = this.getVertexForDirection(edge).value(getPersistentName());
// node = (AssociationClassNode) Enum.valueOf((Class) c, (String) value);
// putToInternalMap(node, this.getVertexForDirection(edge));
} else if (UmlgNode.class.isAssignableFrom(c)) {
node = (AssociationClassNode) c.getConstructor(Vertex.class).newInstance(this.getVertexForDirection(edge));
} else {
throw new RuntimeException();
// Object value = this.getVertexForDirection(edge).value(getPersistentName());
// node = (AssociationClassNode) value;
// putToInternalMap(value, this.getVertexForDirection(edge));
}
this.internalCollection.add(node);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
}
} else if (getDataTypeEnum() != null && getDataTypeEnum().isDateTime()) {
throw new RuntimeException("fix me");
// String s = this.vertex.value(getLabel());
// if (s != null) {
// AssociationClassNode property = (AssociationClassNode) new DateTime(s);
// this.internalCollection.add(property);
// }
} else if (getDataTypeEnum() != null && getDataTypeEnum().isDate()) {
throw new RuntimeException("fix me");
// String s = this.vertex.value(getLabel());
// if (s != null) {
// AssociationClassNode property = (AssociationClassNode) new LocalDate(s);
// this.internalCollection.add(property);
// }
} else if (getDataTypeEnum() != null && getDataTypeEnum().isTime()) {
throw new RuntimeException("fix me");
// String s = this.vertex.value(getLabel());
// if (s != null) {
// AssociationClassNode property = (AssociationClassNode) new LocalTime(s);
// this.internalCollection.add(property);
// }
} else {
AssociationClassNode property = this.vertex.value(getLabel());
if (property != null) {
this.internalCollection.add(property);
}
}
this.loaded = true;
}
@Override
protected Class getClassToInstantiate(Edge edge) {
try {
String value = edge.value(UmlgCollection.ASSOCIATION_CLASS_VERTEX_ID);
Vertex associationClassVertex = UMLG.get().traversal().V(value).next();
return Class.forName((String) associationClassVertex.value("className"));
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
@Override
protected Vertex getVertexForDirection(Edge edge) {
String value = edge.value(UmlgCollection.ASSOCIATION_CLASS_VERTEX_ID);
Vertex associationClassVertex = UMLG.get().traversal().V(value).next();
return associationClassVertex;
}
@Override
public boolean add(AssociationClassNode e) {
throw new RuntimeException("The collection to an association class is immutable!");
}
@Override
public boolean remove(Object o) {
throw new RuntimeException("The collection to an association class is immutable!");
}
}