public WDBObject getParentObject(String superClassName, ParserAdapter scda) throws Exception {
ClassDef myClass = this.getClassDef(scda);
// See if its parent of this class
if (myClass.getClass() == SubclassDef.class) {
// See if its one of my immediate superclasses.
if (parents.containsKey(superClassName)) {
return scda.getObject(superClassName, ((Integer) parents.get(superClassName)));
}
// Not immediate superclass of me. Check my parents.
Enumeration e = parents.keys();
while (e.hasMoreElements()) {
String parentClass = (String) e.nextElement();
Integer parentUid = (Integer) parents.get(parentClass);
WDBObject parent = scda.getObject(parentClass, parentUid);
WDBObject grandparent = parent.getParentObject(superClassName, scda);
if (grandparent != null) {
return grandparent;
}
}
// Not any superClass of mine!
return null;
} else {
return null;
}
}
public void PrintAttribute(PrintNode row, AttributePath attributePath, ParserAdapter scda)
throws Exception {
ClassDef myClass = this.getClassDef(scda);
if (attributePath.levelsOfIndirection() <= 0) {
if (attributePath.attribute.equals("*")) {
for (int j = 0; j < myClass.attributes.size(); j++) {
Attribute currentAttribute = (Attribute) myClass.getAttribute(j);
if (currentAttribute.getClass() == DVA.class) {
Object dvaValue = dvaValues.get(currentAttribute.name);
PrintCell cell = new PrintCell();
cell.setOutput(String.format("%s", dvaValue));
row.addCell(cell);
}
}
if (myClass.getClass() == SubclassDef.class) {
for (int i = 0; i < ((SubclassDef) myClass).numberOfSuperClasses(); i++) {
String parentClass = (String) ((SubclassDef) myClass).getSuperClass(i);
Integer parentUid = (Integer) this.parents.get(parentClass);
WDBObject parent = scda.getObject(parentClass, parentUid);
parent.PrintAttribute(row, attributePath, scda);
}
}
} else {
Attribute currentAttribute = (Attribute) myClass.getAttribute(attributePath.attribute);
Object dvaValue = getDvaValue(attributePath.attribute, scda);
PrintCell cell = new PrintCell();
cell.setOutput(String.format("%s", dvaValue));
row.addCell(cell);
}
} else {
String evaName = attributePath.getIndirection(attributePath.levelsOfIndirection() - 1);
WDBObject[] objects = this.getEvaObjects(evaName, scda);
ArrayList<PrintNode> branch = row.getBranch(evaName);
if (objects != null && objects.length > 0) {
if (branch == null) {
branch = row.newBranch(evaName, objects.length);
}
attributePath.removeIndirection(attributePath.levelsOfIndirection() - 1);
for (int i = 0; i < objects.length; i++) {
objects[i].PrintAttribute(branch.get(i), attributePath, scda);
}
attributePath.addIndirection(evaName);
} else {
if (branch == null) {
branch = row.newBranch(evaName, 1);
myClass.padAttribute(branch.get(0), attributePath, scda);
}
}
row.updateBranchCols(evaName);
}
}
public void addChildObject(WDBObject child) throws Exception {
if (!children.containsKey(child.getClassName())) {
this.children.put(child.getClassName(), child.getUid());
} else {
throw new ClassCastException(
"This entity of class \""
+ this.classDefName
+ "\" has alreadly been extended to class \""
+ child.getClassName()
+ "\"");
}
}
public void setDvaValue(String dvaName, Object value, ParserAdapter scda) throws Exception {
// See if its immediate in this class
ClassDef myClass = this.getClassDef(scda);
Attribute myAttribute = myClass.getAttribute(dvaName);
if (myAttribute != null && myAttribute.getClass() == DVA.class) {
if (value instanceof String) {
this.dvaValues.put(dvaName, value);
} else if (value instanceof Integer) {
this.dvaValues.put(dvaName, value);
} else if (value instanceof Boolean) {
this.dvaValues.put(dvaName, value);
} else {
throw new ClassCastException(
"Type verification failed: Attribute \""
+ dvaName
+ "\" type: "
+ ((DVA) myAttribute).type.toString()
+ ", Value type: "
+ value.getClass().toString());
}
}
// Not immediate, go check parents if I'm an object of a subclass
else if (myClass.getClass() == SubclassDef.class) {
Enumeration e = parents.keys();
while (true) {
if (parents.keySet().isEmpty()) {
break;
}
try {
String parentClass = (String) e.nextElement();
Integer parentUid = (Integer) parents.get(parentClass);
WDBObject parent = scda.getObject(parentClass, parentUid);
parent.setDvaValue(dvaName, value, scda);
// If we reached here, we set our value. Get out of here
break;
} catch (NoSuchFieldException nsfe) {
// Can't find DVA going up that parent's heirarchy. Continue on to another parent
if (!e.hasMoreElements()) {
// No more parents to try. We are here if we exausted our parent's list and
// still can't find the DVA. Throw exception
throw nsfe;
}
}
}
}
// value can't be found and I'm not a subclass. It doesn't exist in this heirarchy
else {
throw new NoSuchFieldException("Attribute \"" + dvaName + "\" is not a valid DVA");
}
this.commit(scda);
}
private void addEvaObject(EVA targetEva, WDBObject targetEvaObject, ParserAdapter scda)
throws Exception {
// TODO: Make sure we update the objects that we removed when replacing with new values
if (targetEva.cardinality.equals(EVA.MULTIVALUED)) {
ArrayList<String> targetObjectList = ((ArrayList) this.evaObjects.get(targetEva.name));
if (targetObjectList == null) {
targetObjectList = new ArrayList<String>();
}
targetObjectList.add(
new String(targetEvaObject.classDefName + ":" + targetEvaObject.getUid()));
this.evaObjects.put(targetEva.name, targetObjectList);
} else if (targetEva.cardinality.equals(EVA.SINGLEVALUED)) {
// For singlevalued EVAs, just put the UID as the value;
this.evaObjects.put(
targetEva.name,
new String(targetEvaObject.classDefName + ":" + targetEvaObject.getUid()));
} else {
throw new NoSuchFieldException(
"Attribute \"" + targetEva.name + "\" uses a invalid cardinality");
}
}
public Object getDvaValue(String dvaName, ParserAdapter scda) throws Exception {
Object value = null;
// See if its immediate in this class
ClassDef myClass = this.getClassDef(scda);
Attribute myAttribute = myClass.getAttribute(dvaName);
if (myAttribute != null && myAttribute.getClass() == DVA.class) {
value = this.dvaValues.get(dvaName);
}
// Not immediate, go check parents if I'm an object of a subclass
else if (myClass.getClass() == SubclassDef.class) {
Enumeration e = parents.keys();
while (true) {
try {
String parentClass = (String) e.nextElement();
Integer parentUid = (Integer) parents.get(parentClass);
WDBObject parent = scda.getObject(parentClass, parentUid);
value = parent.getDvaValue(dvaName, scda);
// If we reached here, we got our value. Get out of here
break;
} catch (NoSuchFieldException nsfe) {
// Can't find DVA going up that parent's heirarchy. Continue on to another parent
if (!e.hasMoreElements()) {
// No more parents to try. We are here if we exausted our parent's list and
// still can't find the DVA. Throw exception
throw nsfe;
}
}
}
}
// value can't be found and I'm not a subclass. It doesn't exist in this heirarchy
else {
throw new NoSuchFieldException("Attribute \"" + dvaName + "\" is not a valid DVA");
}
return value;
}
public WDBObject getBaseObject(ParserAdapter scda) throws Exception {
ClassDef myClass = this.getClassDef(scda);
// See if its parent of this class
if (myClass.getClass() == SubclassDef.class) {
// Check my parents.
Enumeration e = parents.keys();
while (e.hasMoreElements()) {
String parentClass = (String) e.nextElement();
Integer parentUid = (Integer) parents.get(parentClass);
WDBObject parent = scda.getObject(parentClass, parentUid);
WDBObject grandparent = parent.getBaseObject(scda);
if (grandparent != null) {
return grandparent;
}
}
// Not any superClass of mine!
return null;
} else if (myClass.getClass() == ClassDef.class) {
return this;
} else {
return null;
}
}
public WDBObject newInstance(WDBObject baseParent, Adapter scda) throws Exception {
Integer newUid = new Integer(Math.abs((new UID()).hashCode()));
WDBObject newObject =
new WDBObject(
new Hashtable<String, Integer>(),
new Hashtable<String, Integer>(),
new Hashtable<String, Object>(),
new Hashtable<String, Object>(),
this.name,
newUid);
for (int i = 0; i < this.superClasses.size(); i++) {
ClassDef superClass = scda.getClass((String) this.superClasses.get(i));
WDBObject parent;
if (baseParent == null || !superClass.name.equals(baseParent.getClassName())) {
if (superClass.getClass() == SubclassDef.class) {
// If this super class is another subclass, then create a new instance of one of those
// with this object as the child and the parent we want to attach to
parent = superClass.newInstance(baseParent, scda);
} else {
// If this super class is a base class, then create a new isntance but don't pass the
// parent we want to attach since its a base class
parent = superClass.newInstance(null, scda);
}
} else {
// The base parent is my immediate parent
parent = baseParent;
}
WDBObject childObject = parent.getChildObject(this.name, scda);
if (childObject != null) {
// Parent alreadly extended to this class, just return the child instance
return childObject;
}
parent.addChildObject(newObject);
parent.commit(scda);
newObject.addParentObject(parent);
}
this.addInstance(newUid);
this.commit(scda);
return newObject;
}
public WDBObject newInstance(WDBObject parent) throws Exception {
if (parent != null) {
throw new IllegalArgumentException(
"Failed to add parent object of class \""
+ parent.getClassName()
+ "\" to base class "
+ this.name);
}
Integer newUid = new Integer(Math.abs((new UID()).hashCode()));
WDBObject newObject =
new WDBObject(
new Hashtable<String, Integer>(),
new Hashtable<String, Integer>(),
new Hashtable<String, Object>(),
new Hashtable<String, Object>(),
this.name,
newUid);
this.addInstance(newUid);
return newObject;
}
private Boolean removeEvaObject(EVA targetEva, WDBObject targetEvaObject, ParserAdapter scda)
throws Exception {
if (targetEva.cardinality.equals(EVA.MULTIVALUED)) {
ArrayList targetObjectList = ((ArrayList) this.evaObjects.get(targetEva.name));
if (targetObjectList == null) {
return false;
}
Boolean result =
targetObjectList.remove(
new String(targetEvaObject.classDefName + ":" + targetEvaObject.getUid()));
this.evaObjects.put(targetEva.name, targetObjectList);
return result;
} else if (targetEva.cardinality.equals(EVA.SINGLEVALUED)) {
// For singlevalued EVAs, just put the UID as the value;
Boolean result = (this.evaObjects.remove(targetEva.name)) != null;
return result;
} else {
throw new NoSuchFieldException("Attribute \"" + targetEva + "\" uses a invalid cardinality");
}
}
/*
private void addEvaInverse(EVA ownerEva, ClassDef ownerEvaClass, WDBObject ownerEvaObject, ParserAdapter scda) throws Exception
{
//Try to see if other class's inverse EVA is declared on my side
ClassDef myClass = this.getClassDef(scda);
Attribute myAttribute = myClass.getAttribute(ownerEva.inverseEVA);
if(myAttribute != null && myAttribute.getClass() == EVA.class)
{
//Oh it is, good. Use the declared settings
if(((EVA)myAttribute).cardinality == EVA.MULTIVALUED)
{
ArrayList targetObjectList = ((ArrayList)this.evaObjects.get(myAttribute.name));
if(targetObjectList == null)
{
targetObjectList = new ArrayList();
}
targetObjectList.add(ownerEvaObject.getUid());
this.evaObjects.put(myAttribute.name, targetObjectList);
}
else if(((EVA)myAttribute).cardinality == EVA.SINGLEVALUED)
{
//For singlevalued EVAs, just put the UID as the value;
this.evaObjects.put(myAttribute.name, ownerEvaObject.getUid());
}
else
{
throw new NoSuchFieldException("Attribute \"" + myAttribute.name + "\" uses a invalid cardinality");
}
}
else
{
throw new Exception("Implication of target class inverse EVAs is not implemented");
//The inverse EVA is not defined in this class or there is no inverse EVA specified
//We have to infer the cardinality of our inverse based on the cardinality EVA from the owner's class
if(ownerEva.cardinality == EVA.SINGLEVALUED)
{
//Imply MV UNIQUE
if(myAttribute != null)
{
ArrayList targetObjectList = ((ArrayList)this.evaObjects.get(myAttribute.name));
if(targetObjectList == null)
{
targetObjectList = new ArrayList();
}
targetObjectList.add(ownerEvaObject.getUid());
}
}
}
this.commit(scda);
}
*/
public WDBObject[] getEvaObjects(String evaName, ParserAdapter scda) throws Exception {
ClassDef myClass = this.getClassDef(scda);
Attribute myAttribute = myClass.getAttribute(evaName);
WDBObject[] evaObjects = new WDBObject[0];
if (myAttribute != null && myAttribute.getClass() == EVA.class) {
if (((EVA) myAttribute).cardinality.equals(EVA.MULTIVALUED)) {
ArrayList<Object> targetObjectList = ((ArrayList) this.evaObjects.get(evaName));
ArrayList<WDBObject> targetObjects = new ArrayList<WDBObject>();
if (targetObjectList != null) {
for (int i = 0; i < targetObjectList.size(); i++) {
String[] targetKey = ((String) targetObjectList.get(i)).split(":");
String targetClass = targetKey[0];
Integer targetUid = Integer.valueOf(targetKey[1]);
WDBObject targetObject = scda.getObject(targetClass, targetUid);
targetObjects.add(targetObject);
}
evaObjects = ((WDBObject[]) targetObjects.toArray(evaObjects));
}
} else if (((EVA) myAttribute).cardinality.equals(EVA.SINGLEVALUED)) {
if (this.evaObjects.get(evaName) != null) {
String[] targetKey = ((String) this.evaObjects.get(evaName)).split(":");
String targetClass = targetKey[0];
Integer targetUid = Integer.valueOf(targetKey[1]);
WDBObject targetObject = scda.getObject(targetClass, targetUid);
if (targetObject != null) {
WDBObject[] targetObjs = {((WDBObject) targetObject)};
evaObjects = targetObjs;
}
}
} else {
throw new NoSuchFieldException("Attribute \"" + evaName + "\" uses a invalid cardinality");
}
} else if (myClass.getClass() == SubclassDef.class) {
Enumeration e = parents.keys();
while (true) {
try {
String parentClass = (String) e.nextElement();
Integer parentUid = (Integer) parents.get(parentClass);
WDBObject parent = scda.getObject(parentClass, parentUid);
return parent.getEvaObjects(evaName, scda);
// If we reached here, we get our value. Get out of here
// break;
} catch (NoSuchFieldException nsfe) {
// Can't find DVA going up that parent's heirarchy. Continue on to another parent
if (!e.hasMoreElements()) {
// No more parents to try. We are here if we exausted our parent's list and
// still can't find the DVA. Throw exception
throw nsfe;
}
}
}
}
// value can't be found and I'm not a subclass. It doesn't exist in this heirarchy
else {
throw new NoSuchFieldException("Attribute \"" + evaName + "\" is not a valid EVA");
}
return evaObjects;
}
public void removeEvaObjects(
String evaName, String targetClass, WDBObject[] targetObjects, ParserAdapter scda)
throws Exception {
// Don't do anything if the target objects to remove is null
if (targetObjects != null) {
ClassDef myClass = this.getClassDef(scda);
Attribute myAttribute = myClass.getAttribute(evaName);
if (myAttribute != null && myAttribute.getClass() == EVA.class) {
ClassDef targetClassDef = scda.getClass(targetClass);
if (targetClassDef.name.equals(((EVA) myAttribute).baseClassName)
|| targetClassDef.isSubclassOf((((EVA) myAttribute).baseClassName), scda)) {
ClassDef baseClassDef = scda.getClass(((EVA) myAttribute).baseClassName);
WDBObject baseObject;
for (int i = 0; i < targetObjects.length; i++) {
// See if we can remove it from our end first
if (this.removeEvaObject((EVA) myAttribute, targetObjects[i], scda)) {
// Get the object that belongs to the base class of the EVA
if ((((EVA) myAttribute).baseClassName).equals(targetClassDef.name)) {
baseObject = targetObjects[i];
} else {
baseObject =
targetObjects[i].getParentObject((((EVA) myAttribute).baseClassName), scda);
}
// Get the inverse EVA, if there is one
Attribute inverseAttribute =
baseClassDef.getAttribute(((EVA) myAttribute).inverseEVA);
// Put myself as a reference in the target's EVA
if (inverseAttribute != null && inverseAttribute.getClass() == EVA.class) {
baseObject.removeEvaObject((EVA) inverseAttribute, this, scda);
} else {
throw new Exception("Implication of target class inverse EVAs is not implemented");
}
// Update the object
baseObject.commit(scda);
}
}
}
}
// Not immediate, go check parents if I'm an object of a subclass
else if (myClass.getClass() == SubclassDef.class) {
Enumeration e = parents.keys();
while (true) {
try {
String parentClass = (String) e.nextElement();
Integer parentUid = (Integer) parents.get(parentClass);
WDBObject parent = scda.getObject(parentClass, parentUid);
parent.removeEvaObjects(evaName, targetClass, targetObjects, scda);
// If we reached here, we set our value. Get out of here
break;
} catch (NoSuchFieldException nsfe) {
// Can't find DVA going up that parent's heirarchy. Continue on to another parent
if (!e.hasMoreElements()) {
// No more parents to try. We are here if we exausted our parent's list and
// still can't find the DVA. Throw exception
throw nsfe;
}
}
}
}
// value can't be found and I'm not a subclass. It doesn't exist in this heirarchy
else {
throw new NoSuchFieldException("Attribute \"" + evaName + "\" is not a valid EVA");
}
this.commit(scda);
}
}
public void removeChildObject(WDBObject child) throws Exception {
this.children.remove(child.getClassName());
}
public void removeParentObject(WDBObject parent) throws Exception {
this.parents.remove(parent.getClassName());
}
public void addParentObject(WDBObject parent) throws Exception {
this.parents.put(parent.getClassName(), parent.getUid());
}