br.com.objectos.way.io.SheetXlsApachePOI Maven / Gradle / Ivy

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/*
 * Copyright 2013 Objectos, Fábrica de Software LTDA.
 *
 * Licensed 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 br.com.objectos.way.io;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

import br.com.objectos.core.lang.Strings;

/**
 * @author [email protected] (Marcio Endo)
 */
class SheetXlsApachePOI extends AbstractSheetXls implements SheetXls {

  private final TableWriter delegate;

  private final List entities;

  private String name;

  public SheetXlsApachePOI(TableWriter delegate, List entities) {
    this.delegate = delegate;
    this.entities = entities;
  }

  @Override
  public SheetXls named(String name) {
    this.name = name;
    return this;
  }

  @Override
  public byte[] toByteArray() throws IOException {
    POIWorkbook wb = new POIWorkbook();

    apachePOI(wb);

    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    wb.write(stream);
    return stream.toByteArray();
  }

  @Override
  public void writeTo(File file) throws IOException {
    POIWorkbook wb = new POIWorkbook();

    apachePOI(wb);

    FileOutputStream stream = new FileOutputStream(file);
    wb.write(stream);
  }

  @Override
  void apachePOI(POIWorkbook wb) {
    POISheet sheet = Strings.isNullOrEmpty(name) ? wb.createSheet() : wb.createSheet(name);

    delegate.apachePOI(sheet);

    TableHeader header = delegate.getHeader();
    header.apachePOI(sheet);

    TableBody body = delegate.getBody();
    body.apachePOI(sheet, header.maxSize, entities);
  }

}