visad.data
Class DataVisitor

java.lang.Object
  visad.data.DataVisitor

public abstract class DataVisitor
extends Object

Abstract class for visiting a VisAD data object. The derived, concrete subclasses are data-form dependent. The default action upon visiting a VisAD data object is to do nothing and tell the caller to continue.

Constructor Summary

DataVisitor()

Method Summary

boolean	visit(FlatField field) Visit a VisAD FlatField.
boolean	visit(TupleIface tuple) Visit a VisAD Tuple.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataVisitor

public DataVisitor()

Method Detail

visit

public boolean visit(TupleIface tuple)
              throws BadFormException,
                     VisADException,
                     RemoteException

Visit a VisAD Tuple.

Parameters:

tuple - The VisAD Tuple being visited.

Throws:

BadFormException - The Tuple doesn't fit the data model used by the visitor.

VisADException - Core VisAD problem (probably couldn't create a VisAD object).

RemoteException

See Also:

DataNode

Precondition:

tuple is non-null.

Postcondition:

tuple has been visited.

visit

public boolean visit(FlatField field)
              throws BadFormException,
                     VisADException,
                     RemoteException

Visit a VisAD FlatField.

Parameters:

field - The VisAD FlatField being visited.

Throws:

BadFormException - The Tuple doesn't fit the data model used by the visitor.

VisADException - Core VisAD problem (probably couldn't create a VisAD object).

RemoteException

See Also:

DataNode

Precondition:

field is non-null.

Postcondition:

field has been visited.