Android Open Source - jpdroid Jpdroid Matrix Cursor Converter

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License

The source code is released under:

GNU General Public License

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Java Source Code

package br.com.rafael.jpdroid.converters;
/*from   w w w  . ja  v  a  2 s .c o m*/
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;

import android.database.MatrixCursor;
import br.com.rafael.jpdroid.annotations.Column;
import br.com.rafael.jpdroid.annotations.Ignorable;
import static br.com.rafael.jpdroid.core.JpdroidObjectMap.*;

/**
 * Classe respons?vel pela convers?o objetos para um MatrixCursor.
 * 
 * @author Rafael Centenaro
 */
public class JpdroidMatrixCursorConverter {

  public static MatrixCursor toMatrixCursor(Object entity) {
    return toMatrixCursor(entity, true);
  }

  /**
   * Retorna um MatrixCursor gerado com base na entidade passada por par?metro.
   * 
   * @param entity
   * @return MatrixCursor <BR>
   *         Ex:SimpleCursorAdapter dataAdapter = new SimpleCursorAdapter(this, R.layout.activity_simple_list,
   *         matrixCursor, columns, to, 0);
   */
  @SuppressWarnings("unchecked")
  public static MatrixCursor toMatrixCursor(Object entity, boolean onlyColumn) {
    MatrixCursor matrixCursor = null;
    try {
      String[] columns;

      List<Object> row = new ArrayList<Object>();

      if (entity instanceof List) {
        if (onlyColumn) {
          columns = getColumns(((List<?>) entity).get(0).getClass());
        } else {
          columns = getColumns(((List<?>) entity).get(0).getClass(),Column.class,Ignorable.class);
        }
        matrixCursor = new MatrixCursor(columns);

        for (Object item : ((List<?>) entity)) {
          row = new ArrayList<Object>();
          Field[] fields = null;
          if (onlyColumn) {
            fields = getFieldsByAnnotation(item, Column.class);
          } else {
            fields = getFieldsByAnnotation(item, Column.class, Ignorable.class);
          }
          for (Field field : fields) {
            field.setAccessible(true);
            row.add(field.get(item));

          }
          matrixCursor.addRow(row);
        }
      } else {
        columns = getColumns(entity.getClass());
        matrixCursor = new MatrixCursor(columns);

        Field[] fields = null;
        if (onlyColumn) {
          fields = getFieldsByAnnotation(entity, Column.class);
        } else {
          fields = getFieldsByAnnotation(entity, Column.class, Ignorable.class);
        }
        for (Field field : fields) {
          field.setAccessible(true);
          row.add(field.get(entity));

        }
        matrixCursor.addRow(row);
      }

    } catch (Exception e) {

      e.printStackTrace();
    }
    return matrixCursor;
  }
}

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