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/** |
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$Id$ |
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Copyright (C) 2007 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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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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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.jep.convert; |
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import net.sf.basedb.core.query.Expression; |
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import net.sf.basedb.core.query.Expressions; |
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import net.sf.basedb.core.query.Restriction; |
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/** |
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Abstract superclass implementing the {@link JepConversionFunction} |
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interface. This class throws an {@link UnsupportedOperationException} |
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for the {@link #toExpression(Object)} and {@link #toRestriction(Object)} |
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methods. A subclass should override at least one of the methods. |
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@author nicklas |
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@version 2.4 |
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@base.modified $Date$ |
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*/ |
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public abstract class AbstractJepConversionFunction<T> |
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implements JepConversionFunction<T> |
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{ |
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protected AbstractJepConversionFunction() |
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{} |
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|
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/* |
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From the JepConversionFunction interface |
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------------------------------------------- |
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*/ |
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/** |
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@return Always FALSE |
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*/ |
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@Override |
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public boolean isFunction() |
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{ |
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return false; |
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} |
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/** |
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@return Always FALSE |
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*/ |
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@Override |
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public boolean isOperator() |
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{ |
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return false; |
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} |
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/** |
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@return Always null |
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*/ |
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@Override |
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public String getName() |
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{ |
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return null; |
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} |
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/** |
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@return Always null |
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*/ |
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@Override |
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public String getDescription() |
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{ |
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return null; |
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} |
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/** |
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Convert to a restriction and then use {@link Expressions#bool(Restriction)} |
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to create a boolean expression. |
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*/ |
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@Override |
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public Expression toExpression(T node) |
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{ |
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return Expressions.bool(toRestriction(node)); |
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} |
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|
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/** |
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@throws UnsupportedOperationException Always |
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*/ |
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@Override |
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public Restriction toRestriction(T node) |
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{ |
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throw new UnsupportedOperationException(getClass() + ".toRestriction()"); |
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} |
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// ------------------------------------------- |
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|
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} |