org.force66.beantester.valuegens.TemporalValueGenerator.java Source code

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Here is the source code for org.force66.beantester.valuegens.TemporalValueGenerator.java

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/*
 * This software is licensed under the Apache License, Version 2.0
 * (the "License") agreement; 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.force66.beantester.valuegens;

import java.lang.reflect.Constructor;

import org.apache.commons.lang3.Validate;
import org.force66.beantester.utils.BeanTesterException;

public class TemporalValueGenerator implements ValueGenerator<Object> {

    private Class<?> temporalType;
    private Constructor<?> longConstructor;

    public TemporalValueGenerator(Class<?> type) {
        this.temporalType = type;
        Constructor<?>[] allConstructors = type.getDeclaredConstructors();
        for (Constructor<?> ctor : allConstructors) {
            if (ctor.getParameterTypes().length == 1 && ctor.getParameterTypes()[0].getName().equals("long")) {
                longConstructor = ctor;
            }
        }

        Validate.notNull(longConstructor,
                "Not a temporal object with a long constructor.   class=" + type.getName());
    }

    @Override
    public Object[] makeValues() {
        Object obj = null;
        try {
            obj = longConstructor.newInstance(System.currentTimeMillis());
        } catch (Exception e) {
            throw new BeanTesterException("Error instantiating temporal object with long constructor")
                    .addContextValue("class", temporalType.getName());
        }
        return new Object[] { obj };
    }

    @Override
    public boolean canGenerate(Class<?> targetClass) {
        return temporalType.equals(targetClass);
    }

}