server/src/main/java/org/apache/abdera/protocol/server/impl/SimpleCategoriesInfo.java

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  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.  For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.abdera.protocol.server.impl;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.abdera.model.Categories;
import org.apache.abdera.protocol.server.CategoriesInfo;
import org.apache.abdera.protocol.server.CategoryInfo;
import org.apache.abdera.protocol.server.RequestContext;

public class SimpleCategoriesInfo 
  implements CategoriesInfo, 
             Serializable {
  
  private static final long serialVersionUID = 8732335394387909260L;
  
  private final String href;
  private final String scheme;
  private final boolean fixed;
  private final List<CategoryInfo> list = new ArrayList<CategoryInfo>();
  
  public SimpleCategoriesInfo() {
    this(null,false);
  }
  
  public SimpleCategoriesInfo(boolean fixed) {
    this(null,fixed);
  }
  
  public SimpleCategoriesInfo(
    String href) {
      this.href = href;
      this.scheme = null;
      this.fixed = false;
  }
  
  public SimpleCategoriesInfo(
    String scheme, 
    boolean fixed,
    CategoryInfo... categories) {
      this.href = null;
      this.scheme = scheme;
      this.fixed = fixed;
      addCategoryInfo(categories);
  }
  
  public String getHref(RequestContext request) {
    return href;
  }
  
  public String getScheme(RequestContext request) {
    return scheme;
  }
  
  public boolean isFixed(RequestContext request) {
    return fixed;
  }
  
  public Iterator<CategoryInfo> iterator() {
    return list.iterator();
  }
  
  public SimpleCategoriesInfo addCategoryInfo(CategoryInfo... categories) {
    for (CategoryInfo cat : categories)
      list.add(cat);
    return this;
  }
  
  public SimpleCategoriesInfo setCategoryInfo(CategoryInfo... categories) {
    list.clear();
    return addCategoryInfo(categories);
  }

  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + (fixed ? 1231 : 1237);
    result = prime * result + ((href == null) ? 0 : href.hashCode());
    result = prime * result + ((list == null) ? 0 : list.hashCode());
    result = prime * result + ((scheme == null) ? 0 : scheme.hashCode());
    return result;
  }
 
  public boolean equals(Object obj) {
    if (this == obj) return true;
    if (obj == null) return false;
    if (getClass() != obj.getClass()) return false;
    final SimpleCategoriesInfo other = (SimpleCategoriesInfo) obj;
    if (fixed != other.fixed) return false;
    if (href == null) {
      if (other.href != null) return false;
    } else if (!href.equals(other.href)) return false;
    if (list == null) {
      if (other.list != null) return false;
    } else if (!list.equals(other.list)) return false;
    if (scheme == null) {
      if (other.scheme != null) return false;
    } else if (!scheme.equals(other.scheme)) return false;
    return true;
  }
  
  public Categories asCategoriesElement(RequestContext request) {
    Categories cats = request.getAbdera().getFactory().newCategories();
    if (href != null) cats.setHref(href);
    else {
      cats.setFixed(fixed);
      cats.setScheme(scheme);
      for (CategoryInfo cat : this)
        cats.addCategory(
          cat.asCategoryElement(request));
    }
    return cats;
  }
}