org.springjutsu.validation.spel.NamedAttributeAccessorPropertyAccessor.java Source code

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Here is the source code for org.springjutsu.validation.spel.NamedAttributeAccessorPropertyAccessor.java

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/*
 * Copyright 2010-2013 Duplichien, Wicksell, Springjutsu.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springjutsu.validation.spel;

import org.springframework.expression.AccessException;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.PropertyAccessor;
import org.springframework.expression.TypedValue;

/**
 * Property accessor which provides map like access
 * to map like objects configured using the AbstractNamedAttributeAccessor
 * base class.
 * @author Clark Duplichien
 *
 */
public class NamedAttributeAccessorPropertyAccessor implements PropertyAccessor {

    /**
     * Applies specifically to objects whose class extend the
     * AbstractNamedAttributeAccessor class.
     */
    @Override
    @SuppressWarnings("rawtypes")
    public Class[] getSpecificTargetClasses() {
        return new Class[] { AbstractNamedAttributeAccessor.class };
    }

    @Override
    public boolean canRead(EvaluationContext context, Object target, String name) throws AccessException {
        return target != null && ((AbstractNamedAttributeAccessor) target).get(name) != null;
    }

    @Override
    public TypedValue read(EvaluationContext context, Object target, String name) throws AccessException {
        return new TypedValue(((AbstractNamedAttributeAccessor) target).get(name));
    }

    @Override
    public boolean canWrite(EvaluationContext context, Object target, String name) throws AccessException {
        return ((AbstractNamedAttributeAccessor) target).isWritable();
    }

    @Override
    public void write(EvaluationContext context, Object target, String name, Object newValue)
            throws AccessException {
        ((AbstractNamedAttributeAccessor) target).set(name, newValue);
    }

}