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/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* or .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.web.json.scaffold.util;
import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import jakarta.xml.bind.annotation.XmlAccessType;
import jakarta.xml.bind.annotation.XmlAccessorType;
import jakarta.xml.bind.annotation.XmlAnyElement;
import jakarta.xml.bind.annotation.XmlElement;
import jakarta.xml.bind.annotation.XmlRootElement;
import org.smallmind.nutsnbolts.util.Mutation;
@XmlRootElement(name = "page", namespace = "http://org.smallmind/web/json/scaffold/fault")
@XmlAccessorType(XmlAccessType.PROPERTY)
public class Page implements Iterable {
private T[] values;
private long totalResults;
private long firstResult;
private int maxResults;
private int resultSize;
public Page () {
}
public Page (List listOfValues, long firstResult, int maxResults, long totalResults) {
this(fromList(listOfValues), firstResult, maxResults, totalResults);
}
public Page (T[] values, long firstResult, int maxResults, long totalResults) {
this.values = values;
this.firstResult = firstResult;
this.maxResults = maxResults;
this.totalResults = totalResults;
resultSize = values.length;
}
public static Page empty (Class arrayClass) {
return new Page<>((T[])Array.newInstance(arrayClass, 0), 0, 0, 0);
}
private static T[] fromList (List listOfValues) {
T[] values = (T[])new Object[(listOfValues == null) ? 0 : listOfValues.size()];
if (listOfValues != null) {
listOfValues.toArray(values);
}
return values;
}
public Page mutate (Class outType, Mutation mutation)
throws Exception {
U[] outArray = (U[])Array.newInstance(outType, values.length);
int index = 0;
for (T inType : this) {
outArray[index++] = mutation.apply(inType);
}
return new Page<>(outArray, firstResult, maxResults, totalResults);
}
public Page jsonConvert (Class componentClass) {
if ((values == null) || (!values.getClass().getComponentType().equals(componentClass))) {
T[] convertedArray = (T[])Array.newInstance(componentClass, (values == null) ? 0 : values.length);
int index = 0;
for (Object obj : getValues()) {
convertedArray[index++] = JsonCodec.convert(obj, componentClass);
}
values = convertedArray;
}
return this;
}
@Override
public Iterator iterator () {
return Arrays.asList(values).iterator();
}
@XmlElement(name = "firstResult", required = true, nillable = false)
public long getFirstResult () {
return firstResult;
}
public void setFirstResult (long firstResult) {
this.firstResult = firstResult;
}
@XmlElement(name = "maxResults", required = true, nillable = false)
public int getMaxResults () {
return maxResults;
}
public void setMaxResults (int maxResults) {
this.maxResults = maxResults;
}
@XmlElement(name = "resultSize", required = true, nillable = false)
public int getResultSize () {
return resultSize;
}
public void setResultSize (int resultSize) {
this.resultSize = resultSize;
}
@XmlElement(name = "totalResults", required = true, nillable = false)
public long getTotalResults () {
return totalResults;
}
public void setTotalResults (long totalResults) {
this.totalResults = totalResults;
}
@XmlAnyElement()
public T[] getValues () {
return values;
}
public void setValues (T[] values) {
this.values = values;
}
}
