collect From Cursor - Android Database

Android examples for Database:Cursor

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Description

collect From Cursor

Demo Code

/*/*from  w  ww.  j  av  a  2s.com*/
 * Copyright 2013 Cyber Eagle
 *
 *    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.
 */
import java.util.List;
import android.database.Cursor;

public class Main{
    private static final String REQUIRED_CONSTRUCTOR_MESSAGE = "O objeto deve possuir um construtor p?blico sem argumentos";
    public static <T> void collectFromCursor(List<T> objects,
            Cursor cursor, ObjectFiller<T> objectFiller, Class<T> clazz) {
        int i = 0;
        for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor
                .moveToNext(), i++) {
            T object = null;
            if (i < objects.size()) {
                object = objects.get(i);
            } else {
                try {
                    object = (T) clazz.newInstance();
                    objects.add(object);
                } catch (InstantiationException e) {
                    throw new IllegalArgumentException(
                            REQUIRED_CONSTRUCTOR_MESSAGE);
                } catch (IllegalAccessException e) {
                    throw new IllegalArgumentException(
                            REQUIRED_CONSTRUCTOR_MESSAGE);
                }
            }
            objectFiller.fill(object, cursor);
        }
    }
}

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