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

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Here is the source code for org.force66.beantester.valuegens.ArrayValueGenerator.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.Array;

import org.apache.commons.lang3.Validate;

/**
 * Will generate values for arrays.
 * @author D. Ashmore
 *
 */
public class ArrayValueGenerator implements ValueGenerator<Object> {

    private Class<?> arrayType;
    private ValueGeneratorFactory valueGeneratorFactory;

    public ArrayValueGenerator(Class<?> type, ValueGeneratorFactory valueGeneratorFactory) {
        Validate.notNull(type, "Null array type not allowed");
        Validate.notNull(valueGeneratorFactory, "Null valueGeneratorFactory not allowed");
        Validate.isTrue(type.isArray(), "Provided class must be an array.  class=%s", type.getName());
        arrayType = type;
        this.valueGeneratorFactory = valueGeneratorFactory;
    }

    @Override
    public Object[] makeValues() {
        Object[] objArray = new Object[] { Array.newInstance(arrayType.getComponentType(), 1) };
        ValueGenerator<?> gen = valueGeneratorFactory.forClass(arrayType.getComponentType());
        Array.set(objArray[0], 0, gen.makeValues()[0]);
        return objArray;
    }

    @Override
    public boolean canGenerate(Class<?> targetClass) {
        if (targetClass == null)
            return false;
        return targetClass.isArray();
    }

}