File	Doc	Category	Size	Date	Package
MutableObject.java	API Doc	Example	8222	Sun Dec 14 22:47:40 GMT 2003	oreilly.hcj.datamodeling

MutableObject

• java.lang.Object

Fields Summary
private static final long	serialVersionUID Use serialVersionUID for interoperability.
private static final Map	CONSTRAINT_CACHE Holds a cache of constraints asked for. The cache is a structure of a Map of Maps. The outter map is keyed by class and contains a value which is another map. These maps are keyed by property name and have the constraint instances as values.
protected final transient oreilly.hcj.references.PropertyChangeSupport	propertyChangeSupport Utility field used by bound properties.

Constructors Summary
protected MutableObject() Creates a new instance of MutableObject

Methods Summary
public void	addPropertyChangeListener(java.beans.PropertyChangeListener listener) Adds a PropertyChangeListener to the listener list. param listener The listener to add. propertyChangeSupport.addPropertyChangeListener(listener);
public void	addPropertyChangeListener(java.lang.String property, java.beans.PropertyChangeListener listener) Adds a PropertyChangeListener to the listener list for a specific property. param property The property to listen to. param listener The listener to add. propertyChangeSupport.addPropertyChangeListener(property, listener);
protected static final java.util.Map	buildConstraintMap(java.lang.Class dataType) Creates a constraint map for the given class. param dataType The data type to create the map for. return The constructed unmodifiable constraint map. throws IllegalAccessException If there is a security violation. final int modifiers = Modifier.PUBLIC | Modifier.FINAL | Modifier.STATIC; // -- Map constraintMap = new HashMap(); final Field[] fields = dataType.getFields(); Object value = null; for (int idx = 0; idx < fields.length; idx++) { if ((fields[idx].getModifiers() & modifiers) == modifiers) { value = fields[idx].get(null); if (value instanceof ObjectConstraint) { constraintMap.put(((ObjectConstraint)value).getName(), value); } } } return Collections.unmodifiableMap(constraintMap);
public abstract boolean	equals(java.lang.Object obj) see java.lang.Object#equals(java.lang.Object)
public static oreilly.hcj.datamodeling.constraints.ObjectConstraint	getConstraint(java.lang.Class dataType, java.lang.String name) Fetch the named constraint for the given data type. param dataType The class type for which to look up the constraint. param name The name of the constraitn to look up. return The named constraint or null. Map constraintMap = getConstraintMap(dataType); return (ObjectConstraint)constraintMap.get(name);
public static final java.util.Map	getConstraintMap(java.lang.Class dataType) Return the cached constraints or index the constraints of a given class if they aren't already indexed. param dataType The class type for which to index the constraints. return The constraitn map for the given data type. throws RuntimeException If there is a problem indexing the constraints. Please see contained exception if this occurs. try { Map constraintMap = (Map)CONSTRAINT_CACHE.get(dataType); if (constraintMap == null) { constraintMap = buildConstraintMap(dataType); CONSTRAINT_CACHE.put(dataType, constraintMap); return constraintMap; } return Collections.unmodifiableMap(constraintMap); } catch (final IllegalAccessException ex) { throw new RuntimeException(ex); }
public abstract int	hashCode() see java.lang.Object#hashCode()
public void	removePropertyChangeListener(java.beans.PropertyChangeListener listener) Removes a PropertyChangeListener to the listener list. param listener The listener to add. propertyChangeSupport.removePropertyChangeListener(listener);
public void	removePropertyChangeListener(java.lang.String property, java.beans.PropertyChangeListener listener) Removes a PropertyChangeListener to the listener list for a specific property. param property The property to listen to. param listener The listener to add. propertyChangeSupport.removePropertyChangeListener(property, listener);
public java.lang.String	toString() {@inheritDoc} Creates as string containing the class name and the readable properties of the object. try { final BeanInfo info = Introspector.getBeanInfo(this.getClass(), Object.class); final PropertyDescriptor[] props = info.getPropertyDescriptors(); final StringBuffer buf = new StringBuffer(500); Object value = null; buf.append(getClass().getName()); buf.append("@"); //$NON-NLS-1$ buf.append(hashCode()); buf.append("={"); //$NON-NLS-1$ for (int idx = 0; idx < props.length; idx++) { if (idx != 0) { buf.append(", "); //$NON-NLS-1$ } buf.append(props[idx].getName()); buf.append("="); //$NON-NLS-1$ if (props[idx].getReadMethod() != null) { value = props[idx].getReadMethod() .invoke(this, null); if (value instanceof MutableObject) { buf.append("@"); //$NON-NLS-1$ buf.append(value.hashCode()); } else if (value instanceof Collection) { buf.append("{"); //$NON-NLS-1$ for (Iterator iter = ((Collection)value).iterator(); iter.hasNext();) { Object element = iter.next(); if (element instanceof MutableObject) { buf.append("@"); //$NON-NLS-1$ buf.append(element.hashCode()); } else { buf.append(element.toString()); } } buf.append("}"); //$NON-NLS-1$ } else if (value instanceof Map) { buf.append("{"); //$NON-NLS-1$ Map map = (Map)value; for (Iterator iter = map.keySet() .iterator(); iter.hasNext();) { Object key = iter.next(); Object element = map.get(key); buf.append(key.toString() + "="); if (element instanceof MutableObject) { buf.append("@"); //$NON-NLS-1$ buf.append(element.hashCode()); } else { buf.append(element.toString()); } } buf.append("}"); //$NON-NLS-1$ } else { buf.append(value); } } } buf.append("}"); //$NON-NLS-1$ return buf.toString(); } catch (Exception ex) { throw new RuntimeException(ex); }