gnosygnu_xowa/140_dbs/src/gplx/dbs/Db_sql_select.java

/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.dbs; import gplx.*;
import gplx.core.criterias.*;
interface Db_sql_qry {
	String Tbl_main();
}
class Db_sql_qry__select {
	public Db_sql_qry__select(String from) {this.from = from;}
	public String			From() {return from;} private final    String from;
	public Db_sql_col[]		Select() {return select;} private Db_sql_col[] select;
//		public Criteria			Where() {return where;} private Criteria where;
//		public Db_sql_col[]		Group_bys() {return group_bys;} private Db_sql_col[] group_bys;
//		public Db_sql_col[]		Order_bys() {return order_bys;} private Db_sql_col[] order_bys;
//		public int				Limit() {return limit;} private int limit;
//		public int				Offset() {return offset;} private int offset;
	public Db_sql_qry__select Select_all_()						{this.select = Db_sql_col_.Ary(new Db_sql_col__all(0, from)); return this;}
	public Db_sql_qry__select Select_flds_(String... ary)	{this.select = Db_sql_col_bldr.Instance.new_fld_many(ary); return this;}
	public static Db_sql_qry__select new_(String from) {return new Db_sql_qry__select(from);}
}
class Db_sql_bldr {
	public void Test() {
//			Db_sql_qry__select qry = null;
//			qry = Db_sql_qry__select.new_("tbl").Select_all_();
//			qry = Db_sql_qry__select.new_("tbl").Select_flds_("fld1", "fld2");
//			qry = Db_sql_qry__select.new_("tbl").Select_flds_("fld1", "fld2").Where_("fld3");
//				, String_.Ary("col1", "col2"), String_.Ary("col3")).Limit_(10).;
//			Db_sql_qry__select qry = Db_sql_qry__select_.new_("tbl").Cols_("col1", "col2").Where_eq_one("col3").Limit_(10);
	}
}
interface Db_sql_col {
	int Ord();
	String Alias();
}
class Db_sql_col_ {
	public static Db_sql_col[] Ary(Db_sql_col... v) {return v;}
}
class Db_sql_col_bldr {
	private final    List_adp tmp_list = List_adp_.New();
	public Db_sql_col[] new_fld_many(String[] ary) {
		tmp_list.Clear();
		int ord = -1;
		for (int i = 0; i < ary.length; ++i) {
			String fld_key = ary[i];
			if (fld_key == Dbmeta_fld_itm.Key_null) continue;
			Db_sql_col__name fld = new Db_sql_col__name(++ord, fld_key);
			tmp_list.Add(fld);
		}
		return (Db_sql_col[])tmp_list.To_ary_and_clear(Db_sql_col.class);
	}
        public static final    Db_sql_col_bldr Instance = new Db_sql_col_bldr(); Db_sql_col_bldr() {}
}
class Db_sql_col__name {
	public Db_sql_col__name(int ord, String key) {this.ord = ord; this.key = key;}
	public int Ord() {return ord;} private final    int ord;
	public String Key() {return key;} private final    String key;
}
class Db_sql_col__all implements Db_sql_col {
	public Db_sql_col__all(int ord, String tbl) {this.ord = ord; this.tbl = tbl;}
	public int Ord() {return ord;} private final    int ord;
        public String Tbl() {return tbl;} private final    String tbl;
	public String Alias() {return "*";}
}