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/** |
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$Id$ |
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Copyright (C) 2012 Nicklas Nordborg |
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This file is part of BASE - BioArray Software Environment. |
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Available at http://base.thep.lu.se/ |
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BASE 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 3 |
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of the License, or (at your option) any later version. |
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|
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BASE 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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|
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You should have received a copy of the GNU General Public License |
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along with BASE. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package net.sf.basedb.util.overview.extensions; |
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import java.lang.reflect.Field; |
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|
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import net.sf.basedb.util.ClassUtil; |
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import net.sf.basedb.util.extensions.ActionFactory; |
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import net.sf.basedb.util.extensions.InvokationContext; |
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/** |
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Factory implementation for validation rule actions that uses reflection |
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to access the value of a public static field and return that as the validation |
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rule. The public static field must be a {@link ValidationRuleAction} object. |
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<p> |
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This factory has one configuration parameter <code>field</code> which is |
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the fully qualified name for the field. Failure to access or use the class and/or |
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field disabled the action and is reported to the log only. |
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|
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@author nicklas |
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@since 3.2 |
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*/ |
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public class ReflectValidationRuleActionFactory |
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implements ActionFactory<ValidationRuleAction> |
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{ |
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|
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private String fullFieldName; |
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private ValidationRuleAction rule; |
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|
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public ReflectValidationRuleActionFactory() |
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{} |
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|
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/* |
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From the ActionFactory interface |
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-------------------------------- |
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*/ |
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@Override |
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public boolean prepareContext(InvokationContext<? super ValidationRuleAction> context) |
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{ |
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return getValidationRule(context) != null; |
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} |
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|
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@Override |
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public ValidationRuleAction[] getActions(InvokationContext<? super ValidationRuleAction> context) |
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{ |
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return new ValidationRuleAction[] { rule }; |
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} |
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// ---------------------------------- |
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|
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|
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public void setField(String fullFieldName) |
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{ |
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this.fullFieldName = fullFieldName; |
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} |
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private ValidationRuleAction getValidationRule(InvokationContext<? super ValidationRuleAction> context) |
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{ |
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if (rule == null && fullFieldName != null) |
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{ |
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int lastDot = fullFieldName.lastIndexOf('.'); |
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String clazzName = fullFieldName.substring(0, lastDot); |
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String fieldName = fullFieldName.substring(lastDot+1); |
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|
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try |
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{ |
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Class<?> clazz = ClassUtil.checkAndLoadClass(context.getClassLoader(), clazzName, false, null); |
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Field ruleField = clazz.getField(fieldName); |
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rule = (ValidationRuleAction)ruleField.get(null); |
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} |
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catch (Exception ex) |
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{ |
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ex.printStackTrace(); |
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fullFieldName = null; |
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} |
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} |
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return rule; |
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} |
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} |