160 lines
3.9 KiB
C
160 lines
3.9 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-operation.h"
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#include "sql-value.h"
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/**
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* SECTION: sql-operation
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* @Short_description: operations between #SqlExpr
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* @Title: SqlOperation
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*
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* Any operation over or between one or more #SqlExpr is represented by the
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* #SqlOperation of the corresponding type. To see the different types of
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* #SqlOperation see #SqlOperationType.
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**/
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G_DEFINE_TYPE (SqlOperation, sql_operation, SQL_TYPE_EXPR);
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SqlOperation * sql_operation_new (SqlOperationType type)
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{
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return g_object_new (SQL_TYPE_OPERATION, "type", type, NULL);
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Private
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static const gchar * SQL_OPERATION_TYPE[] =
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{
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"*"
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,"/"
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,"+"
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,"-"
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,"NOT"
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,"IS"
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,"="
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,"!="
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,">="
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,">"
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,"<="
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,"<"
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,"LIKE"
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,"AND"
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,"OR"
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,"XOR"
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};
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static void sql_operation_render (SqlOperation * obj, SqlRender * render)
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{
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sql_render_add_espace (render);
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sql_render_append (render, "(");
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sql_render_add_list (render, T, NULL, obj->expr,
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SQL_OPERATION_TYPE[obj->type]);
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sql_render_append (render, ")");
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}
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static gboolean sql_operation_is_ready (SqlOperation * obj)
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{
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GSList * n;
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for (n = obj->expr; n; n = n->next)
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if (!sql_object_is_ready (n->data))
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return FALSE;
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return TRUE;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Public
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/**
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* sql_operation_add_expr:
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* @obj: an #SqlOperation.
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* @expr: an #SqlExpr.
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*
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* Adds an expression to an existing operation.
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**/
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void sql_operation_add_expr (SqlOperation * obj, SqlExpr * expr)
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{
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g_return_if_fail (SQL_IS_OPERATION (obj));
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g_return_if_fail (SQL_IS_EXPR (expr));
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sql_object_list_add (SQL_OBJECT (obj), &obj->expr, SQL_OBJECT (expr));
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Properties
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enum
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{
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PROP_TYPE = 1
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,PROP_COUNT
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};
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static void sql_operation_set_property (SqlOperation * 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_TYPE:
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obj->type = g_value_get_int (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_operation_get_property (SqlOperation * 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_TYPE:
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g_value_set_int (value, obj->type);
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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_operation_init (SqlOperation * obj)
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{
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obj->expr = NULL;
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}
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static void sql_operation_finalize (SqlOperation * obj)
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{
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sql_object_list_free (SQL_OBJECT (obj), obj->expr);
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G_OBJECT_CLASS (sql_operation_parent_class)->finalize (G_OBJECT (obj));
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}
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static void sql_operation_class_init (SqlOperationClass * klass)
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{
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GObjectClass * k = G_OBJECT_CLASS (klass);
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k->finalize = (GObjectFinalizeFunc) sql_operation_finalize;
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k->set_property = (GObjectSetPropertyFunc) sql_operation_set_property;
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k->get_property = (GObjectGetPropertyFunc) sql_operation_get_property;
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SQL_OBJECT_CLASS (klass)->render = (SqlRenderFunc) sql_operation_render;
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SQL_OBJECT_CLASS (klass)->is_ready = (SqlObjectIsReadyFunc) sql_operation_is_ready;
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g_object_class_install_property (k, PROP_TYPE,
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g_param_spec_int ("type"
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,"Type"
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,"The type of the operation"
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,0, SQL_OPERATION_TYPE_COUNT, 0
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,G_PARAM_READWRITE
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));
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}
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