Android Open Source - ShareList-Android No Id Cursor Wrapper

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License

The source code is released under:

GNU General Public License

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Java Source Code

package org.mybop.sharelist.app.database;
/*  w  w w. j  a  v a2s  .  c  o  m*/
import android.database.Cursor;
import android.database.CursorWrapper;
import android.widget.ListView;

/**
 * A {@link CursorWrapper} implementation that allows a {@link Cursor} without a
 * field named "_id" to be used with various Android {@link ListView} classes
 * that expect a column named "_id". This is done by specifying an alias field
 * name to be used in place of "_id".
 */
public class NoIdCursorWrapper extends CursorWrapper {
    private int idColumnIndex;

    /**
     * Create a NoIdCursorWrapper using the alias column index.
     *
     * @param c             the cursor to wrap
     * @param idColumnIndex the column index to use as the _id column alias
     */
    public NoIdCursorWrapper(Cursor c, int idColumnIndex) {
        super(c);
        this.idColumnIndex = idColumnIndex;
    }

    /**
     * Create a NoIdCursorWrapper using the alias column name.
     *
     * @param c            the cursor to wrap
     * @param idColumnName the column name to use as the _id column alias
     */
    public NoIdCursorWrapper(Cursor c, String idColumnName) {
        super(c);
        idColumnIndex = c.getColumnIndex(idColumnName);
    }

    @Override
    public int getColumnIndex(String columnName) {
        int index = super.getColumnIndex(columnName);
        if (index < 0 && "_id".equals(columnName)) {
            index = idColumnIndex;
        }
        return index;
    }

    ;

    @Override
    public int getColumnIndexOrThrow(String columnName) throws IllegalArgumentException {
        int index = getColumnIndex(columnName);
        if (index >= 0) {
            return index;
        }
        // let the AbstractCursor generate the exception
        return super.getColumnIndexOrThrow(columnName);
    }

    ;
}

Java Source Code List