org.eclipse.mat.internal.snapshot.inspections

Class Path2GCRootsQuery.Tree

java.lang.Object

org.eclipse.mat.internal.snapshot.inspections.Path2GCRootsQuery.Tree

All Implemented Interfaces:

IDecorator, IIconProvider, IResult, IResultTree, ISelectionProvider, IStructuredResult

Enclosing class:

Path2GCRootsQuery

public static final class Path2GCRootsQuery.Tree
extends Object
implements IResultTree, IIconProvider, IDecorator, ISelectionProvider

Field Summary

Fields inherited from interface org.eclipse.mat.query.IIconProvider

EMPTY

Fields inherited from interface org.eclipse.mat.query.ISelectionProvider

EMPTY

Constructor Summary

Constructors

Constructor and Description
Tree(ISnapshot snapshot, int objectId, IPathsFromGCRootsComputer computer)

Method Summary

Modifier and Type	Method and Description
List<?>	addNextPath()
List<?>	getChildren(Object parent) Returns the child elements of the given parent.
Column[]	getColumns() The columns of the tree or table.
Object	getColumnValue(Object row, int columnIndex) Returns the (unformatted) value of a table/tree cell.
IContextObject	getContext(Object row) The default context of the row which is used to display information in the object inspector.
List<?>	getElements() Returns the root elements of the tree.
URL	getIcon(Object row)
int	getNumberOfPaths()
ResultMetaData	getResultMetaData() (Optionally) Return meta data of the result needed to fine-tune the display of the result.
boolean	hasChildren(Object element) Returns whether the given element has children.
boolean	isExpanded(Object row) Should this node be expanded.
boolean	isSelected(Object row) Has the user selected this row?
boolean	morePathsAvailable()
String	prefix(Object row) Add before the object for example <local>
String	suffix(Object row) Add after the object

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Tree

public Tree(ISnapshot snapshot,
            int objectId,
            IPathsFromGCRootsComputer computer)

Method Detail

addNextPath

public List<?> addNextPath()
                    throws SnapshotException

Returns:

the ancestors of the first newly created object

Throws:

SnapshotException

morePathsAvailable

public boolean morePathsAvailable()

getNumberOfPaths

public int getNumberOfPaths()

getResultMetaData

public ResultMetaData getResultMetaData()

Description copied from interface: IResult

(Optionally) Return meta data of the result needed to fine-tune the display of the result. This could include an additional context, an additional query to run on selected data from the result , additional calculated columns, or an indication that the results are already presorted.

Specified by:

getResultMetaData in interface IResult

Returns:

the metadata for the result, used to obtain extra data

getColumns

public final Column[] getColumns()

Description copied from interface: IStructuredResult

The columns of the tree or table.

Specified by:

getColumns in interface IStructuredResult

Returns:

an array of all the columns

getElements

public List<?> getElements()

Description copied from interface: IResultTree

Returns the root elements of the tree.

Specified by:

getElements in interface IResultTree

Returns:

list of elements which can be passed to IResultTree.getChildren(Object) or IStructuredResult.getContext(Object) or IStructuredResult.getColumnValue(Object, int).

getChildren

public List<?> getChildren(Object parent)

Description copied from interface: IResultTree

Returns the child elements of the given parent.

Specified by:

getChildren in interface IResultTree

Parameters:

parent - The row object as returned by the IResultTree.getElements() or IResultTree.getChildren(Object) methods.

Returns:

a list of children of this branch of the tree

hasChildren

public boolean hasChildren(Object element)

Description copied from interface: IResultTree

Returns whether the given element has children.

Specified by:

hasChildren in interface IResultTree

Parameters:

element - the opaque object used to indicate which branch

Returns:

true if this element has children

getColumnValue

public final Object getColumnValue(Object row,
                                   int columnIndex)

Description copied from interface: IStructuredResult

Returns the (unformatted) value of a table/tree cell.

Specified by:

getColumnValue in interface IStructuredResult

Parameters:

row - The row object as returned by the IResultTable.getRow(int) or IResultTree.getElements() or IResultTree.getChildren(Object) methods

columnIndex - The index of the column.

Returns:

the cell value

getContext

public final IContextObject getContext(Object row)

Description copied from interface: IStructuredResult

The default context of the row which is used to display information in the object inspector. Unless no context provider is given via the ResultMetaData, it is also used for the context menu on a row.

Specified by:

getContext in interface IStructuredResult

Parameters:

row - The row object as returned by the IResultTable.getRow(int) or IResultTree.getElements() or IResultTree.getChildren(Object) methods.

Returns:

a context object holding details about that row

getIcon

public URL getIcon(Object row)

Specified by:

getIcon in interface IIconProvider

isExpanded

public boolean isExpanded(Object row)

Description copied from interface: ISelectionProvider

Should this node be expanded.

Specified by:

isExpanded in interface ISelectionProvider

Parameters:

row - the chosen row

Returns:

true if it should be expanded.

isSelected

public boolean isSelected(Object row)

Description copied from interface: ISelectionProvider

Has the user selected this row?

Specified by:

isSelected in interface ISelectionProvider

Parameters:

row - the chosen row

Returns:

true if selected

prefix

public final String prefix(Object row)

Description copied from interface: IDecorator

Add before the object for example <local>

Specified by:

prefix in interface IDecorator

Parameters:

row - used to find the row

Returns:

the prefix or null

suffix

public final String suffix(Object row)

Description copied from interface: IDecorator

Add after the object

Specified by:

suffix in interface IDecorator

Parameters:

row - used to find the row

Returns:

the suffix or null