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4e2300f095
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5186 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
65 lines
2.6 KiB
Java
65 lines
2.6 KiB
Java
/*
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* Copyright (C) 2005-2007 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing"
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*/
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package org.alfresco.service.cmr.dictionary;
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/**
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* The interface for classes that implement constraints on property values.
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* <p>
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* Implementations of the actual constraint code should must not synchronize
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* or in any other way block threads. Concurrent access of the evaluation
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* method is expected, but will always occur after initialization has completed.
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* <p>
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* Attention to performance is <u>crucial</u> for all implementations as
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* instances of this class are heavily used.
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* <p>
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* The constraint implementations can provide standard setter methods that will
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* be populated by bean setter injection. Once all the available properties have
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* been set, the contraint will be initialized.
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*
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* @author Derek Hulley
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*/
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public interface Constraint
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{
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/**
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* Initializes the constraint with appropriate values, which will depend
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* on the implementation itself. This method can be implemented as a
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* once-off, i.e. reinitialization does not have to be supported.
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*
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* @param parameters constraint parameters
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*/
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public void initialize();
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/**
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* Evaluates a property value according to the implementation and initialization
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* parameters provided.
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*
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* @param value the property value to check
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*
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* @throws ConstraintException if the value doesn't pass all constraints
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*/
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public void evaluate(Object value);
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}
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