Android Open Source - spades Selected Column

From Project

Back to project page spades.

License

The source code is released under:

Apache License

If you think the Android project spades listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

/**
 * Copyright (C) 2013 Pau Picas Sans <pau.picas@gmail.com>
 */*from  w w w.j a  v  a2  s .co m*/
 * 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 cat.picas.spades.query;

import android.provider.BaseColumns;
import cat.picas.spades.Column;
import cat.picas.spades.SqlHelper;
import cat.picas.spades.Column.ColumnId;

class SelectedColumn {

  private NameMapper mMapper = new NameMapper();
  private Column mColumn;
  private String mCustomExpression;
  private Column[] mCustomColumns;

  public SelectedColumn(Column column) {
    mColumn = column;
  }

  public SelectedColumn(String expression, Column... columns) {
    mCustomExpression = expression;
    mCustomColumns = columns;
  }

  public boolean isCustom() {
    return mCustomExpression != null;
  }

  public Column getColumn() {
    return mColumn;
  }

  public String getCustomExpression() {
    return mCustomExpression;
  }

  public Column[] getCustomColumns() {
    return mCustomColumns;
  }

  public String format() {
    if (!isCustom()) {
      return mMapper.ref(mColumn);
    } else {
      return SqlHelper.expr(mCustomExpression, mCustomColumns);
    }
  }

  static class RowIdColumn extends SelectedColumn {

    public RowIdColumn(ColumnId column) {
      super("%s as " + BaseColumns._ID, column);
    }

  }

  static class CountColumn extends SelectedColumn {

    public CountColumn() {
      super("COUNT(*)");
    }

  }

}

Java Source Code List