/*

  * Copyright 2011 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 1.0 (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.opensource.org/licenses/ecl1.php

  *

  * 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.kuali.rice.core.api.criteria;

 import org.apache.commons.lang.builder.EqualsBuilder;

 import org.apache.commons.lang.builder.HashCodeBuilder;

 import org.apache.commons.lang.builder.ToStringBuilder;

 import org.kuali.rice.core.api.mo.ModelBuilder;

 import org.kuali.rice.core.api.mo.ModelObjectComplete;

 import java.io.Serializable;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.List;

 public final class GenericQueryResults<T> implements QueryResults<T>, ModelObjectComplete{

         private final List<T> results;

         private final Integer totalRowCount;

         private final boolean moreResultsAvailable;

         private GenericQueryResults(Builder<T> builder) {

                 this.results = builder.getResults() != null ? Collections.unmodifiableList(new ArrayList<T>(builder.getResults())) : Collections.<T>emptyList();

                 this.totalRowCount = builder.getTotalRowCount();

                 this.moreResultsAvailable = builder.isMoreResultsAvailable();

         }

         @Override

         public List<T> getResults() {

                 return results;

         }

         @Override

         public Integer getTotalRowCount() {

                 return totalRowCount;

         }

         @Override

         public boolean isMoreResultsAvailable() {

                 return moreResultsAvailable;

         }

     @Override

         public int hashCode() {

                 return HashCodeBuilder.reflectionHashCode(this);

         }

         @Override

         public boolean equals(Object obj) {

                 return EqualsBuilder.reflectionEquals(obj, this);

         }

         @Override

         public String toString() {

                 return ToStringBuilder.reflectionToString(this);

         }

         public static final class Builder<T> implements ModelBuilder, QueryResults<T>, Serializable {

                 private List<T> results;

                 private Integer totalRowCount;

                 private boolean moreResultsAvailable;

         public static <T> Builder create() {

             return new Builder<T>();

         }

                 private Builder() {

                         this.results = new ArrayList<T>();

                         this.moreResultsAvailable = false;

                 }

         @Override

                 public GenericQueryResults<T> build() {

                         return new GenericQueryResults<T>(this);

                 }

                 public List<T> getResults() {

                         return this.results;

                 }

                 public void setResults(List<T> results) {

                         if (results == null) {

                 throw new IllegalArgumentException("results is null");

             }

             this.results = Collections.unmodifiableList(new ArrayList<T>(results));

                 }

                 public Integer getTotalRowCount() {

                         return this.totalRowCount;

                 }

                 public void setTotalRowCount(Integer totalRowCount) {

                         if (totalRowCount != null && totalRowCount < 0) {

                 throw new IllegalArgumentException("totalRowCount < 0");

             }

             this.totalRowCount = totalRowCount;

                 }

                 public boolean isMoreResultsAvailable() {

                         return this.moreResultsAvailable;

                 }

                 public void setMoreResultsAvailable(boolean moreResultsAvailable) {

                         this.moreResultsAvailable = moreResultsAvailable;

                 }

         }

 }