/**
* Constructs a handle for a model workspace item of the specified type, with the given parent
* item and name.
*
* @param type - one of the constants defined in ModelWorkspaceItem
* @exception IllegalArgumentException if the type is not one of the valid model workspace item
* type constants
*/
protected ModelWorkspaceItemImpl(
final int type, final ModelWorkspaceItem parent, final String name)
throws IllegalArgumentException {
if (type < MINIMUM_VALID_TYPE || type > MAXIMUM_VALID_TYPE) {
throw new IllegalArgumentException(
ModelerCore.Util.getString("element.invalidType")); // $NON-NLS-1$
}
// ArgCheck.isNotNull(name); // Should be done in subclasses, not here
// ArgCheck.isNotZeroLength(name); // Should be done in subclasses, not here
fType = type;
fParent = (ModelWorkspaceItemImpl) parent;
fName = name;
if (fParent != null) {
try {
ModelWorkspaceItemInfo info = (ModelWorkspaceItemInfo) fParent.getItemInfo();
info.addChild(this);
} catch (ModelWorkspaceException e) {
ModelerCore.Util.log(
IStatus.ERROR,
e,
ModelerCore.Util.getString(
"ModelWorkspaceItemImpl.Error_trying_to_create_a_modelWorksapceItem_{0}_under_the_parent_{1}_1",
name, fParent.getItemName())); // $NON-NLS-1$
}
}
}
/** Debugging purposes */
protected void toStringAncestors(StringBuffer buffer) {
ModelWorkspaceItemImpl parent = (ModelWorkspaceItemImpl) this.getParent();
if (parent != null && parent.getParent() != null) {
buffer.append(" [in "); // $NON-NLS-1$
parent.toStringInfo(0, buffer, NO_INFO);
parent.toStringAncestors(buffer);
buffer.append("]"); // $NON-NLS-1$
}
}
/**
* Removes all cached info from the Model Workspace, including all children, but does not close
* this element.
*/
protected void removeInfo() {
Object info = ModelWorkspaceManager.getModelWorkspaceManager().peekAtInfo(this);
if (info != null) {
ModelWorkspaceItem[] children = ((ModelWorkspaceItemInfo) info).getChildren();
for (int i = 0, size = children.length; i < size; ++i) {
ModelWorkspaceItemImpl child = (ModelWorkspaceItemImpl) children[i];
child.removeInfo();
}
ModelWorkspaceManager.getModelWorkspaceManager().removeInfo(this);
}
}
/**
* Returns the hash code for this model workspace item. By default, the hash code for an element
* is a combination of its name and parent's hash code. Elements with other requirements must
* override this method.
*/
@Override
public int hashCode() {
if (fParent == null) {
return super.hashCode();
}
return HashCodeUtil.hashCode(fParent.hashCode(), fName.hashCode());
}
/** @see Openable */
public void close() throws ModelWorkspaceException {
this.closing = true;
boolean wasVerbose = ModelWorkspaceManager.VERBOSE;
try {
Object info = ModelWorkspaceManager.getModelWorkspaceManager().peekAtInfo(this);
if (info != null) {
if (ModelWorkspaceManager.VERBOSE) {
System.out.println(
"CLOSING Element ("
+ Thread.currentThread()
+ "): "
+ this.toStringWithAncestors()); // $NON-NLS-1$//$NON-NLS-2$
wasVerbose = true;
ModelWorkspaceManager.VERBOSE = false;
}
ModelWorkspaceItem[] children = ((ModelWorkspaceItemInfo) info).getChildren();
for (int i = 0, size = children.length; i < size; ++i) {
ModelWorkspaceItemImpl child = (ModelWorkspaceItemImpl) children[i];
child.close();
}
closing(info);
ModelWorkspaceManager.getModelWorkspaceManager().removeInfo(this);
if (wasVerbose) {
System.out.println(
"-> Package cache size = "
+ ModelWorkspaceManager.getModelWorkspaceManager()
.cache
.pkgSize()); //$NON-NLS-1$
}
}
} catch (ModelWorkspaceException e) {
throw e;
} catch (Throwable t) {
ModelerCore.Util.log(t);
} finally {
ModelWorkspaceManager.VERBOSE = wasVerbose;
this.closing = false;
}
}
/**
* Returns true if this handle represents the same model workspace item as the given handle. By
* default, two handles represent the same element if they are identical or if they represent the
* same type of element, have equal names, parents, and occurrence counts.
*
* <p>If a subclass has other requirements for equality, this method must be overridden.
*
* @see Object#equals
*/
@Override
public boolean equals(Object o) {
if (this == o) return true;
// Model parent is null
if (fParent == null) return super.equals(o);
if (o instanceof ModelWorkspaceItemImpl) {
ModelWorkspaceItemImpl other = (ModelWorkspaceItemImpl) o;
if (fType != other.fType) return false;
return fName.equals(other.fName)
&& fParent.equals(other.fParent)
&& occurrenceCount == other.occurrenceCount;
}
return false;
}