net.lshift.diffa.participant.scanning.SetConstraint Maven / Gradle / Ivy

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Diffa Participant Support provides tools for implementing Diffa participants in Java (and other JVM languages)

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/**
 * Copyright (C) 2010-2011 LShift Ltd.
 *
 * 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 net.lshift.diffa.participant.scanning;

import java.util.Set;

/**
 * A constraint whereby the value of a given attribute must be within a given set of values.
 */
public class SetConstraint extends AbstractScanConstraint {
  private final Set values;

  public SetConstraint(String name, Set values) {
    super(name);

    this.values = values;
  }

  public Set getValues() {
    return values;
  }

  public boolean contains(String value) {
    return values.contains(value);
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    if (!super.equals(o)) return false;

    SetConstraint that = (SetConstraint) o;

    if (values != null ? !values.equals(that.values) : that.values != null) return false;

    return true;
  }

  @Override
  public int hashCode() {
    int result = super.hashCode();
    result = 31 * result + (values != null ? values.hashCode() : 0);
    return result;
  }

  @Override
  public String toString() {
    return "SetConstraint{" +
        "name=" + getAttributeName() +
        ", values=" + values +
        '}';
  }
}