Requirement.java

/*
 * #%L
 * wcm.io
 * %%
 * Copyright (C) 2019 wcm.io
 * %%
 * 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.
 * #L%
 */
package io.wcm.qa.glnm.pairwise;

class Requirement {

  private Value valueA;
  private Value valueB;

  protected Requirement(Value a, Value b) {
    if (a.getDomain() == b.getDomain()) {
      throw new IllegalArgumentException("Cannot have a requirement on a single domain.");
    }
    setValueA(a);
    setValueB(b);
  }

  /** {@inheritDoc} */
  @Override
  public String toString() {
    return "[" + getValueA() + "x" + getValueB() + "]";
  }

  protected void setValueA(Value a) {
    this.valueA = a;
  }

  protected void setValueB(Value b) {
    this.valueB = b;
  }

  Value getValueA() {
    return valueA;
  }

  Value getValueB() {
    return valueB;
  }

}