bigtop-master/bigtop-data-generators/bigpetstore-data-generator/src/main/java/org/apache/bigtop/datagenerators/bigpetstore/generators/products/rules/FieldPredicate.java
/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.bigtop.datagenerators.bigpetstore.generators.products.rules;

import java.util.Arrays;
import java.util.Collection;

import org.apache.bigtop.datagenerators.bigpetstore.datamodels.Product;

public class FieldPredicate implements Rule
{
	String fieldName;
	Collection<String> allowedValues;

	public FieldPredicate(String fieldName, String ... allowedValues)
	{
		this.fieldName = fieldName;
		this.allowedValues = Arrays.asList(allowedValues);
	}

	@Override
	public boolean ruleMatches(Product product)
	{
		if(! product.getFieldNames().contains(fieldName))
		{
			throw new IllegalArgumentException("Product (" + product.toString() +
					") does not contain field name (" + fieldName + ")");
		}

		Object seenValue = product.getFieldValue(fieldName);

		return allowedValues.contains(seenValue);
	}

}
