PageLinkDto.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * 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 org.kaaproject.kaa.common.dto;

import java.io.Serializable;

public class PageLinkDto implements Serializable {

  public static final String ENDPOINT_GROUP_ID = "endpointGroupId";
  public static final String LIMIT = "limit";
  public static final String EQ = "=";
  public static final String AMP = "&";
  public static final String OFFSET = "offset";
  private static final long serialVersionUID = 3270625120957514502L;
  private String endpointGroupId;
  private String limit;
  private String offset;
  private String next;
  private String applicationId;

  public PageLinkDto() {
  }

  /**
   * All-args constructor.
   */
  public PageLinkDto(String endpointGroupId, String limit, String offset) {
    this.endpointGroupId = endpointGroupId;
    this.limit = limit;
    this.offset = offset;
    this.next = null;
    this.applicationId = null;
  }

  public String getLimit() {
    return limit;
  }

  public void setLimit(String limit) {
    this.limit = limit;
  }

  public String getOffset() {
    return offset;
  }

  public void setOffset(String offset) {
    this.offset = offset;
  }

  public String getNext() {
    return next;
  }

  public void setNext(String next) {
    this.next = next;
  }

  public String getEndpointGroupId() {
    return endpointGroupId;
  }

  public void setEndpointGroupId(String endpointGroupId) {
    this.endpointGroupId = endpointGroupId;
  }

  public String getApplicationId() {
    return applicationId;
  }

  public void setApplicationId(String applicationId) {
    this.applicationId = applicationId;
  }

  /**
   * Returns the next url part.
   *
   * @return next url part
   */
  public String getNextUrlPart() {
    String nextUrlPart = null;
    if (limit != null && offset != null) {
      StringBuilder sb = new StringBuilder();
      sb.append(ENDPOINT_GROUP_ID).append(EQ).append(endpointGroupId).append(AMP).append(LIMIT)
              .append(EQ).append(limit).append(AMP).append(OFFSET).append(EQ).append(offset);
      nextUrlPart = sb.toString();
    }
    return nextUrlPart;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((applicationId == null) ? 0 : applicationId.hashCode());
    result = prime * result + ((endpointGroupId == null) ? 0 : endpointGroupId.hashCode());
    result = prime * result + ((limit == null) ? 0 : limit.hashCode());
    result = prime * result + ((next == null) ? 0 : next.hashCode());
    result = prime * result + ((offset == null) ? 0 : offset.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    PageLinkDto other = (PageLinkDto) obj;
    if (applicationId == null) {
      if (other.applicationId != null) {
        return false;
      }
    } else if (!applicationId.equals(other.applicationId)) {
      return false;
    }
    if (endpointGroupId == null) {
      if (other.endpointGroupId != null) {
        return false;
      }
    } else if (!endpointGroupId.equals(other.endpointGroupId)) {
      return false;
    }
    if (limit == null) {
      if (other.limit != null) {
        return false;
      }
    } else if (!limit.equals(other.limit)) {
      return false;
    }
    if (next == null) {
      if (other.next != null) {
        return false;
      }
    } else if (!next.equals(other.next)) {
      return false;
    }
    if (offset == null) {
      if (other.offset != null) {
        return false;
      }
    } else if (!offset.equals(other.offset)) {
      return false;
    }
    return true;
  }
}