/*
* Copyright (C) 2015 Arthur Gregorio, AG.Software
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package br.com.webbudget.application.component.table;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import lombok.Getter;
import org.apache.commons.lang3.StringUtils;
import org.primefaces.model.SortMeta;
/**
* Builder para producao dos filtros da pesquisa lazy
*
* @author Arthur Gregorio
*
* @version 1.1.0
* @since 2.1.0, 05/09/2015
*/
public class PageRequest {
@Getter
private int firstResult;
@Getter
private int pageSize;
@Getter
private SortDirection sortDirection;
@Getter
private boolean multiSort;
private List<MultiSortField> multiSortFields;
private String sortField;
private String defaultField;
/**
* Inicializa o que for necessario
*/
public PageRequest() {
this.sortDirection = SortDirection.DESC;
}
/**
* @param first o primeiro resultado
* @return o builder
*/
public PageRequest setFirstResult(int first) {
this.firstResult = first;
return this;
}
/**
* @param size o tamanho maximo da pagina
* @return o builder
*/
public PageRequest withPageSize(int size) {
this.pageSize = size;
return this;
}
/**
* @param field o campo a ser usado como ordenador
* @param defaultField o campo a ser usado como ordenador padrao
* @return o builder
*/
public PageRequest sortingBy(String field, String defaultField) {
this.multiSort = false;
this.multiSortFields = null;
this.sortField = field;
this.defaultField = defaultField;
return this;
}
/**
* Metodo utilizado quando o multisort da datatable esta habilitado
*
* @param sortMetas os campos para sort
* @param defaultField o campo default
* @return
*/
public PageRequest multiSortingBy(List<SortMeta> sortMetas, String defaultField) {
this.multiSort = true;
this.multiSortFields = this.sortMetaToSortFields(sortMetas);
this.defaultField = defaultField;
return this;
}
/**
* @param direction a direcao de ordenacao da tabela
* @return o builder
*/
public PageRequest withDirection(String direction) {
switch (direction) {
case "ASCENDING":
this.sortDirection = SortDirection.ASC;
break;
case "DESCENDING":
this.sortDirection = SortDirection.DESC;
break;
default:
throw new IllegalArgumentException(
"Invalid sort direction: " + direction);
}
return this;
}
/**
* @return por qual campos estamos fazendo sort na tabela
*/
public String getSortField() {
return StringUtils.isBlank(this.sortField) ? this.defaultField : this.sortField;
}
/**
* @return a lista de campos para sort da pesquisa
*/
public List<MultiSortField> getMultiSortFields() {
this.multiSortFields.add(new MultiSortField("inclusion", "DESCENDING"));
return Collections.unmodifiableList(this.multiSortFields);
}
/**
* Converte as metas de sort do primefaces para uma lista legivel pela
* camada de dominio do sistema
*
* @param metas as metas vindas das view
* @return a lista de campos para sort
*/
private List<MultiSortField> sortMetaToSortFields(List<SortMeta> metas) {
final List<MultiSortField> fields = new ArrayList<>();
if (metas != null) {
metas.forEach(meta -> {
fields.add(new MultiSortField(meta.getSortField(),
meta.getSortOrder().name()));
});
}
return fields;
}
/**
* A direcao de sort do filtro
*/
public enum SortDirection {
ASC, DESC;
}
/**
* Um encapsulamento da logica de multisorting do primefaces para hibernate
*/
public class MultiSortField {
@Getter
private final String sortField;
@Getter
private final SortDirection direction;
/**
*
* @param sortField
* @param direction
*/
public MultiSortField(String sortField, String direction) {
this.sortField = sortField;
switch (direction) {
case "ASCENDING":
this.direction = SortDirection.ASC;
break;
case "DESCENDING":
this.direction = SortDirection.DESC;
break;
default:
throw new IllegalArgumentException(
"Invalid sort direction: " + direction);
}
}
}
}