DocumentFilter.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the 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.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.turro.financials.document;
 
import java.util.Collection;
import java.util.List;
import org.turro.elephant.db.WhereClause;
import org.turro.financials.db.FinancialsPU;
import org.turro.financials.entity.Document;
import org.turro.jpa.Dao;
import org.turro.plugin.filter.IFilterValue;
import org.turro.zkoss.grid.GroupExtended;
import org.zkoss.zul.Grid;
import org.zkoss.zul.Group;
 
public class DocumentFilter {
 
  private String mainOrderField;
 
  private long lastId = 0;
 
  public DocumentFilter() {
  }
 
  public Collection getDocuments(List<IFilterValue> values, boolean onlyIds) {
    lastId = 0;
    Dao dao = new FinancialsPU();
    WhereClause wc = createCriteria(values, onlyIds);
    return dao.getResultList(wc);
  }
 
  public void checkGroup(Grid grid, Document doc, boolean open) {
    if("doc.contract.id".equals(mainOrderField)) {
      if(lastId == 0 || lastId != doc.getContract().getId()) {
        lastId = doc.getContract().getId();
        Group group = new GroupExtended(doc.getContract().getFullDescription());
        group.setOpen(open);
        grid.getRows().appendChild(group);
      }
    } else if("doc.documentDefinition.id".equals(mainOrderField)) {
      if(lastId == 0 || lastId != doc.getDocumentDefinition().getId()) {
        lastId = doc.getDocumentDefinition().getId();
        Group group = new GroupExtended(doc.getDocumentDefinition().getName());
        group.setOpen(open);
        grid.getRows().appendChild(group);
      }
    }
  }
 
  private WhereClause createCriteria(List<IFilterValue> values, boolean onlyIds) {
    mainOrderField = "doc.contract.id";
    WhereClause wc = new WhereClause();
    if(onlyIds) {
      wc.addClause("select doc.id from Document as doc");
    } else {
      wc.addClause("select doc from Document as doc");
    }
    wc.addClause("where 1=1");
    for(IFilterValue v : values) {
      if(v.hasValue() && "Contract".equals(v.getLabel())) {
        mainOrderField = "doc.documentDefinition.id";
      }
      v.addConstraint(wc);
    }
    wc.addClause("order by " + mainOrderField + ", doc.documentDate, doc.documentNumber");
    return wc;
  }
 
}