120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/*
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* Copyright (C) 2012 - Juan Ferrer Toribio
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "sql-subquery.h"
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/**
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* SECTION: sql-subquery
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* @Short_description: an #SqlTarget containing an #SqlSelect
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* @Title: SqlSubquery
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*
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* An #SqlTarget containing an #SqlSelect, used to add a sub-query to the
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* targets field in an SQL query.
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**/
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G_DEFINE_TYPE (SqlSubquery, sql_subquery, SQL_TYPE_TARGET);
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SqlObject * sql_subquery_new (SqlSelect * select)
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{
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return g_object_new (SQL_TYPE_SUBQUERY, "select", select, NULL);
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Private
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static void sql_subquery_render (SqlSubquery * obj, SqlRender * render)
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{
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if (obj->select)
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{
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sql_render_append (render, "(");
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sql_render_add_item (render, TRUE, NULL, obj->select);
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sql_render_append (render, ")");
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}
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Public
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void sql_subquery_set_select (SqlSubquery * obj, SqlSelect * select)
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{
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g_return_if_fail (SQL_IS_SUBQUERY (obj));
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g_return_if_fail (SQL_IS_SELECT (select) || !select);
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sql_object_remove (obj, obj->select);
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obj->select = sql_object_add (obj, select);
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Properties
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enum
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{
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PROP_SELECT = 1
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};
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static void sql_subquery_set_property (SqlSubquery * obj, guint id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (id)
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{
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case PROP_SELECT:
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sql_subquery_set_select (obj, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
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}
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}
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static void sql_subquery_get_property (SqlSubquery * obj, guint id,
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GValue * value, GParamSpec * pspec)
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{
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switch (id)
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{
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case PROP_SELECT:
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g_value_set_object (value, obj->select);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
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}
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class
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static void sql_subquery_init (SqlSubquery * obj)
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{
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obj->select = NULL;
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}
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static void sql_subquery_finalize (SqlSubquery * obj)
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{
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sql_object_remove (obj, obj->select);
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G_OBJECT_CLASS (sql_subquery_parent_class)->finalize (G_OBJECT (obj));
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}
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static void sql_subquery_class_init (SqlSubqueryClass * klass)
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{
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GObjectClass * k = G_OBJECT_CLASS (klass);
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k->finalize = (GObjectFinalizeFunc) sql_subquery_finalize;
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k->set_property = (GObjectSetPropertyFunc) sql_subquery_set_property;
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k->get_property = (GObjectGetPropertyFunc) sql_subquery_get_property;
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SQL_OBJECT_CLASS (klass)->render = (SqlRenderFunc) sql_subquery_render;
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g_object_class_install_property (k, PROP_SELECT,
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sql_param_object ("select"
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,("Select")
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,("The SELECT statement")
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,SQL_TYPE_SELECT
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,G_PARAM_READWRITE
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));
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}
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