51 lines
2.2 KiB
Java
51 lines
2.2 KiB
Java
/* Copyright 2010 Abhinav Sarkar <abhinav@abhinavsarkar.net>
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*
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* This file is a part of SpelHelper library.
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*
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* SpelHelper library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License (GNU LGPL) as
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* published by the Free Software Foundation, either version 3 of the License,
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* or (at your option) any later version.
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*
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* SpelHelper library 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with SpelHelper library. If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.abhinavsarkar.spelhelper;
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import java.lang.reflect.Constructor;
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import java.util.List;
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import org.springframework.core.convert.TypeDescriptor;
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import org.springframework.expression.AccessException;
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import org.springframework.expression.ConstructorExecutor;
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import org.springframework.expression.ConstructorResolver;
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import org.springframework.expression.EvaluationContext;
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import org.springframework.expression.spel.support.ReflectiveConstructorResolver;
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final class ImplicitConstructorResolver implements ConstructorResolver {
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private final ReflectiveConstructorResolver delegate = new ReflectiveConstructorResolver();
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@Override
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public ConstructorExecutor resolve(
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final EvaluationContext context, final String typeName,
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final List<TypeDescriptor> argumentTypes)
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throws AccessException {
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try {
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return delegate.resolve(context, typeName, argumentTypes);
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} catch (AccessException ex) {
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Object variable = ((SpelHelper) context.lookupVariable(SpelHelper.CONTEXT_LOOKUP_KEY))
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.lookupImplicitConstructor(typeName + argumentTypes.toString());
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if (variable instanceof Constructor<?>) {
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Constructor<?> constructor = (Constructor<?>) variable;
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return delegate.resolve(context, constructor.getDeclaringClass().getName(), argumentTypes);
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}
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return null;
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}
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}
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} |