/*
    * 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.syncope.core.persistence.jpa.entity.policy;
  
  import java.util.ArrayList;
  import java.util.List;
  import javax.persistence.Entity;
  import javax.persistence.FetchType;
  import javax.persistence.JoinColumn;
  import javax.persistence.JoinTable;
  import javax.persistence.ManyToMany;
  import javax.persistence.Table;
  import javax.persistence.UniqueConstraint;
  import javax.validation.constraints.NotNull;
  import org.apache.syncope.common.lib.types.IdRepoImplementationType;
  import org.apache.syncope.core.persistence.api.entity.Implementation;
  import org.apache.syncope.core.persistence.api.entity.policy.PasswordPolicy;
  import org.apache.syncope.core.persistence.jpa.entity.JPAImplementation;
  
  @Entity
  @Table(name = JPAPasswordPolicy.TABLE)
  public class JPAPasswordPolicy extends AbstractPolicy implements PasswordPolicy {
  
      private static final long serialVersionUID = 9138550910385232849L;
  
      public static final String TABLE = "PasswordPolicy";
  
      @NotNull
      private Boolean allowNullPassword = false;
  
      private int historyLength;
  
      @ManyToMany(fetch = FetchType.EAGER)
      @JoinTable(name = TABLE + "Rule",
              joinColumns =
              @JoinColumn(name = "policy_id"),
              inverseJoinColumns =
              @JoinColumn(name = "implementation_id"),
              uniqueConstraints =
              @UniqueConstraint(columnNames = { "policy_id", "implementation_id" }))
      private List<JPAImplementation> rules = new ArrayList<>();
  
      @Override
      public boolean isAllowNullPassword() {
          return allowNullPassword;
      }
  
      @Override
      public void setAllowNullPassword(final boolean allowNullPassword) {
          this.allowNullPassword = allowNullPassword;
      }
  
      @Override
      public int getHistoryLength() {
          return historyLength;
      }
  
      @Override
      public void setHistoryLength(final int historyLength) {
          this.historyLength = historyLength;
      }
  
      @Override
      public boolean add(final Implementation rule) {
          checkType(rule, JPAImplementation.class);
          checkImplementationType(rule, IdRepoImplementationType.PASSWORD_RULE);
          return rules.contains((JPAImplementation) rule) || rules.add((JPAImplementation) rule);
      }
  
      @Override
      public List<? extends Implementation> getRules() {
          return rules;
      }
  }