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authorBoris Kolpackov <boris@codesynthesis.com>2015-02-04 17:23:54 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2015-02-04 17:23:54 +0200
commit504fa38f3f71c345f41dfbb7e59b1d2f88308987 (patch)
treed4328b3cb9de151699232c9722e2f8899ac2f36b /common/view/basics/test.hxx
parentcbad49a571dfff9a046997b18776fd3cee6d7b51 (diff)
Implement object loading views
See section 10.2 in the manual for details.
Diffstat (limited to 'common/view/basics/test.hxx')
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+// file : common/view/basics/test.hxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TEST_HXX
+#define TEST_HXX
+
+#include <string>
+#include <vector>
+#include <cstddef> // std::size_t
+
+#include <odb/core.hxx>
+#include <odb/nullable.hxx>
+
+struct employer;
+
+#pragma db object
+struct country
+{
+ country (const std::string& c, std::string const& n)
+ : code (c), name (n)
+ {
+ }
+
+ country ()
+ {
+ }
+
+ #pragma db id
+ std::string code; // ISO 2-letter country code.
+
+ std::string name;
+};
+
+enum gender_type {male, female};
+
+#pragma db value
+struct measures
+{
+ measures (unsigned short w, unsigned short h) : weight (w), hight (h) {}
+ measures () {}
+
+ unsigned short weight;
+ unsigned short hight;
+};
+
+#pragma db object
+struct person
+{
+ typedef ::measures measures_type;
+
+ person (unsigned long i,
+ const std::string& fn,
+ const std::string& ln,
+ unsigned short a,
+ gender_type g,
+ const measures_type m,
+ country* r,
+ country* n)
+ : id (i),
+ first_name_ (fn),
+ last_name_ (ln),
+ age (a),
+ gender (g),
+ measures (m),
+ residence (r),
+ nationality (n),
+ husband (0)
+ {
+ }
+
+ person ()
+ {
+ }
+
+ #pragma db id
+ unsigned long id;
+
+ #pragma db column("first")
+ std::string first_name_;
+
+ #pragma db column("last")
+ std::string last_name_;
+
+ unsigned short age;
+
+ // #pragma db type("INT") - in MySQL test type pragma copying
+ gender_type gender;
+
+ measures_type measures;
+
+ #pragma db not_null
+ country* residence;
+
+ #pragma db not_null
+ country* nationality;
+
+ #pragma db inverse(employees)
+ employer* employed_by;
+
+ // A non-pointer relationship.
+ //
+ odb::nullable<std::string> previous_employer;
+
+ person* husband; // Self-reference.
+};
+
+#pragma db object
+struct employer
+{
+ employer (const std::string& n)
+ : name (n)
+ {
+ }
+
+ employer ()
+ {
+ }
+
+ #pragma db id
+ std::string name;
+ unsigned int head_count;
+ std::vector<person*> employees;
+};
+
+//
+// General view with no associated objects.
+//
+
+// Complete suffix query template.
+//
+#ifndef ODB_DATABASE_ORACLE
+# pragma db view query("SELECT first, last, age FROM t_view_b_person")
+#else
+# pragma db view query("SELECT \"first\", \"last\", \"age\" " \
+ "FROM \"t_view_b_person\"")
+#endif
+struct view1
+{
+ std::string first;
+ std::string last;
+ unsigned short age;
+};
+
+// Complete query.
+//
+#ifndef ODB_DATABASE_ORACLE
+# pragma db view query("SELECT first, last, age " \
+ "FROM t_view_b_person " \
+ "WHERE age < 31 ORDER BY age")
+#else
+# pragma db view query("SELECT \"first\", \"last\", \"age\" " \
+ "FROM \"t_view_b_person\" " \
+ "WHERE \"age\" < 31 ORDER BY \"age\"")
+#endif
+struct view1a
+{
+ std::string first;
+ std::string last;
+ unsigned short age;
+};
+
+// Complete placeholder query template.
+//
+#ifndef ODB_DATABASE_ORACLE
+# pragma db view query("SELECT first, last, age " \
+ "FROM t_view_b_person " \
+ "WHERE age < 31 AND (?) ORDER BY age")
+#else
+# pragma db view query("SELECT \"first\", \"last\", \"age\" " \
+ "FROM \"t_view_b_person\" " \
+ "WHERE \"age\" < 31 AND (?) ORDER BY \"age\"")
+#endif
+struct view1b
+{
+ std::string first;
+ std::string last;
+ unsigned short age;
+};
+
+// Runtime query.
+//
+#pragma db view //query()
+struct view1c
+{
+ std::string first;
+ std::string last;
+ unsigned short age;
+};
+
+// Assembled SELECT and FROM-lists.
+//
+#pragma db view table("t_view_b_person")
+struct view1d
+{
+ #pragma db column("first")
+ std::string first;
+
+ #pragma db column("last")
+ std::string last;
+
+ #pragma db column("age")
+ unsigned short age;
+};
+
+//
+// Count view plus associated object.
+//
+
+// Complete suffix query.
+//
+#ifndef ODB_DATABASE_ORACLE
+# pragma db view object(person) \
+ query("SELECT count(id) FROM t_view_b_person")
+#else
+# pragma db view object(person) \
+ query("SELECT count(\"id\") FROM \"t_view_b_person\"")
+#endif
+struct view2
+{
+ std::size_t count;
+};
+
+// Generated query, literal column.
+//
+#pragma db view object(person)
+struct view2a
+{
+#ifndef ODB_DATABASE_ORACLE
+ #pragma db column("count(id)")
+#else
+ #pragma db column("count(\"id\")")
+#endif
+ std::size_t count;
+};
+
+// Generated query, qualified literal column.
+//
+#pragma db view object(person)
+struct view2b
+{
+#ifndef ODB_DATABASE_ORACLE
+ #pragma db column("count(t_view_b_person.id)")
+#else
+ #pragma db column("count(\"t_view_b_person\".\"id\")")
+#endif
+ std::size_t count;
+};
+
+// Generated query, expression column.
+//
+#pragma db view object(person)
+struct view2c
+{
+ #pragma db column("count(" + person::id + ")")
+ std::size_t count;
+};
+
+//
+// Aggregate view plus associated object with a custom alias.
+//
+
+// Complete suffix query.
+//
+#ifndef ODB_DATABASE_ORACLE
+# pragma db view object(person = test) \
+ query("SELECT last, count(last) " \
+ "FROM t_view_b_person " \
+ "GROUP BY last")
+#else
+# pragma db view object(person = test) \
+ query("SELECT \"last\", count(\"last\") " \
+ "FROM \"t_view_b_person\" " \
+ "GROUP BY \"last\"")
+#endif
+struct view3
+{
+ std::string last_name;
+ std::size_t count;
+};
+
+// Generated query with integrated query condition and placeholder.
+//
+#pragma db view object(person = test) \
+ query((?) + "GROUP BY" + test::last_name_)
+struct view3a
+{
+ // Automatically resolved to test::last_name_.
+ //
+ std::string last_name;
+
+ #pragma db column("count(" + test::last_name_ + ")")
+ std::size_t count;
+};
+
+//
+// JOIN view plus associated objects, some with custom aliases.
+//
+
+// Complete suffix query.
+//
+#ifndef ODB_DATABASE_ORACLE
+# pragma db view object(person) object(country = residence) \
+ query("SELECT first, last, residence.name " \
+ "FROM t_view_b_person " \
+ "LEFT JOIN t_view_b_country AS residence " \
+ "ON t_view_b_person.residence = residence.code")
+#else
+# pragma db view object(person) object(country = residence) \
+ query("SELECT \"first\", \"last\", \"residence\".\"name\" " \
+ "FROM \"t_view_b_person\" " \
+ "LEFT JOIN \"t_view_b_country\" \"residence\" " \
+ "ON \"t_view_b_person\".\"residence\" = \"residence\".\"code\"")
+#endif
+struct view4
+{
+ std::string first_name;
+ std::string last_name;
+ std::string name;
+};
+
+// Generated query.
+//
+#pragma db view object(person) \
+ object(country = residence: person::residence)
+struct view4a
+{
+ std::string first_name;
+ std::string last_name;
+ std::string name;
+};
+
+//
+// JOIN the same object twice.
+//
+#pragma db view object(person) \
+ object(country = residence: person::residence) \
+ object(country = nationality: person::nationality) \
+ query((?) + "ORDER BY" + person::age)
+struct view5
+{
+ std::string first_name;
+ std::string last_name;
+
+ #pragma db column(residence::name)
+ std::string rname;
+
+ #pragma db column(nationality::name)
+ std::string nname;
+};
+
+//
+// JOIN via one(i)-to-many relationship.
+//
+
+// Automatic relationship discovery.
+//
+#pragma db view object(person) object(employer)
+struct view6
+{
+ std::string first_name;
+ std::string last_name;
+
+ #pragma db column(::employer::name)
+ std::string employer;
+};
+
+// Manual relationship specification, left side.
+//
+#pragma db view object(person) object(employer: person::employed_by)
+struct view6a
+{
+ std::string first_name;
+ std::string last_name;
+
+ #pragma db column(::employer::name)
+ std::string employer;
+};
+
+// Manual relationship specification, right side.
+//
+#pragma db view object(person) object(employer: employer::employees)
+struct view6b
+{
+ std::string first_name;
+ std::string last_name;
+
+ #pragma db column(::employer::name)
+ std::string employer;
+};
+
+// The same using tables.
+//
+#if defined(ODB_DATABASE_ORACLE)
+#pragma db view table("t_view_b_person" = "p") \
+ table("t_view_b_employer_employees" = "ee": "\"ee\".\"value\" = \"p\".\"id\"")\
+ table("t_view_b_employer" = "e": "\"ee\".\"object_id\" = \"e\".\"name\"")
+#elif defined(ODB_DATABASE_MSSQL)
+#pragma db view table("t_view_b_person" = "p") \
+ table("t_view_b_employer_employees" = "ee": "ee.value = p.id") \
+ table("t_view_b_employer" = "e": "[ee].[object_id] = e.name")
+#elif defined(ODB_DATABASE_MYSQL)
+#pragma db view table("t_view_b_person" = "p") \
+ table("t_view_b_employer_employees" = "ee": "ee.value = p.id") \
+ table("t_view_b_employer" = "e": "`ee`.`object_id` = e.name")
+#else
+#pragma db view table("t_view_b_person" = "p") \
+ table("t_view_b_employer_employees" = "ee": "ee.value = p.id") \
+ table("t_view_b_employer" = "e": "\"ee\".\"object_id\" = e.name")
+#endif
+struct view6c
+{
+ #pragma db column("p.first")
+ std::string first_name;
+
+ #pragma db column("p.last")
+ std::string last_name;
+
+ #pragma db column("e"."name")
+ std::string employer;
+};
+
+//
+// JOIN via a custom condition.
+//
+#pragma db view object(person) \
+ object(employer: person::previous_employer == employer::name)\
+ query((?) + "ORDER BY" + person::age)
+struct view7
+{
+ std::string first_name;
+ std::string last_name;
+
+ odb::nullable<unsigned int> head_count;
+};
+
+//
+// Self-JOIN.
+//
+#pragma db view object(person = wife) object(person = husb) \
+ query (wife::husband.is_not_null ())
+struct view8
+{
+ #pragma db column(wife::first_name_)
+ std::string wife_name;
+
+ #pragma db column(husb::first_name_)
+ std::string husb_name;
+};
+
+//
+// Enum mapping.
+//
+#pragma db view object(person)
+struct view9
+{
+ std::string first_name;
+ std::string last_name;
+ gender_type gender;
+};
+
+//
+// Composite in view.
+//
+#pragma db view object(person) query((?) + "ORDER BY" + person::age)
+struct view10
+{
+ std::string last_name;
+ ::measures measures;
+};
+
+//
+// Composite in object.
+//
+#pragma db view object(person) \
+ query((person::measures.weight > 60 && person::measures.hight < 190 && (?)) \
+ + "ORDER BY" + person::age)
+struct view11
+{
+ std::string last_name;
+
+ #pragma db column(person::measures.hight)
+ unsigned short hight;
+};
+
+//
+// Extract object pointer as object id.
+//
+#pragma db view object(person)
+struct view12
+{
+ std::string residence;
+};
+
+#endif // TEST_HXX