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Diffstat (limited to 'projects/net.wotonomy.persistence/src/main/java/net/wotonomy/control/EOFaultHandler.java')
| -rw-r--r-- | projects/net.wotonomy.persistence/src/main/java/net/wotonomy/control/EOFaultHandler.java | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/projects/net.wotonomy.persistence/src/main/java/net/wotonomy/control/EOFaultHandler.java b/projects/net.wotonomy.persistence/src/main/java/net/wotonomy/control/EOFaultHandler.java new file mode 100644 index 0000000..19dc2df --- /dev/null +++ b/projects/net.wotonomy.persistence/src/main/java/net/wotonomy/control/EOFaultHandler.java @@ -0,0 +1,102 @@ +/* +Wotonomy: OpenStep design patterns for pure Java applications. +Copyright (C) 2001 Michael Powers + +This library is free software; you can redistribute it and/or +modify it under the terms of the GNU Lesser General Public +License as published by the Free Software Foundation; either +version 2.1 of the License, or (at your option) any later version. + +This library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public +License along with this library; if not, see http://www.gnu.org +*/ + +package net.wotonomy.control; + +/** +* EOFaultHandler defines the contract for objects that can +* create and populate faults. In wotonomy, this interface is +* currently only a marker interface. +* +* @author michael@mpowers.net +* @author $Author: cgruber $ +* @version $Revision: 893 $ +*/ +public abstract class EOFaultHandler { + + protected Class _targetClass; + + public EOFaultHandler() { + super(); + } + + public static EOFaultHandler handlerForFault(Object obj) { + if (!(obj instanceof EOFaulting)) + throw new IllegalArgumentException("Object must implement EOFaulting"); + return ((EOFaulting)obj).faultHandler(); + } + + public static boolean isFault(Object obj) { + if (obj == null) + return false; + boolean isit = (obj instanceof EOFaulting); + if (isit) + isit = ((EOFaulting)obj).isFault(); + return isit; + } + + public static void makeObjectIntoFault(Object obj, EOFaultHandler handler) { + if (!(obj instanceof EOFaulting)) + throw new IllegalArgumentException("Object must implement EOFaulting"); + ((EOFaulting)obj).turnIntoFault(handler); + } + + public static void clearFault(Object obj) { + if (!(obj instanceof EOFaulting)) + throw new IllegalArgumentException("Object must implement EOFaulting"); + ((EOFaulting)obj).clearFault(); + } + + public Class targetClass() { + return _targetClass; + } + + public Object createFaultForDeferredFault(Object fault, EOEnterpriseObject source) { + return fault; + } + + public String descriptionForObject(Object obj) { + if (obj == null) + return "<null>"; + return obj.toString(); + } + + public String eoShallowDescription(Object obj) { + return null; + } + + public abstract void completeInitializationOfObject(Object obj); + + public abstract void faultWillFire(Object obj); + +} + +/* + * $Log$ + * Revision 1.1 2006/02/16 13:19:57 cgruber + * Check in all sources in eclipse-friendly maven-enabled packages. + * + * Revision 1.2 2003/08/19 01:53:12 chochos + * EOObjectStore had some incompatible return types (Object instead of EOEnterpriseObject, in fault methods mostly). It's internally consistent but I hope it doesn't break anything based on this, even though fault methods mostly throw exceptions for now. + * + * Revision 1.1 2001/11/13 04:13:59 mpowers + * Added interfaces needed to begin work on EOCustomObject. + * + */ + + |
