diff options
| -rw-r--r-- | odb/pgsql/query.cxx | 256 | ||||
| -rw-r--r-- | odb/pgsql/query.hxx | 1687 | ||||
| -rw-r--r-- | odb/pgsql/query.ixx | 28 | ||||
| -rw-r--r-- | odb/pgsql/query.txx | 110 | ||||
| -rw-r--r-- | odb/pgsql/result.hxx | 78 | ||||
| -rw-r--r-- | odb/pgsql/result.txx | 134 |
6 files changed, 2293 insertions, 0 deletions
diff --git a/odb/pgsql/query.cxx b/odb/pgsql/query.cxx new file mode 100644 index 0000000..ba39564 --- /dev/null +++ b/odb/pgsql/query.cxx @@ -0,0 +1,256 @@ +// file : odb/pgsql/query.cxx +// author : Constantin Michael <constantin@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#include <cstddef> // std::size_t +#include <cstring> // std::memset +#include <cassert> +#include <sstream> + +#include <odb/pgsql/query.hxx> + +using namespace std; + +namespace odb +{ + namespace pgsql + { + // query_param + // + query_param:: + ~query_param () + { + } + + query:: + query (const query& q) + : clause_ (q.clause_), + parameters_ (q.parameters_), + bind_ (q.bind_), + binding_ (0, 0), + values_ (q.values_), + lengths_ (q.lengths_), + formats_ (q.formats_), + types_ (q.types_), + native_binding_ (0, 0, 0, 0) + { + // Here and below we want to maintain up to date binding info so + // that the call to parameters_binding() below is an immutable + // operation, provided the query does not have any by-reference + // parameters. This way a by-value-only query can be shared + // between multiple threads without the need for synchronization. + // + if (size_t n = bind_.size ()) + { + binding_.bind = &bind_[0]; + binding_.count = n; + binding_.version++; + + native_binding_.values = &values_[0]; + native_binding_.lengths = &lengths_[0]; + native_binding_.formats = &formats_[0]; + native_binding_.count = n; + + assert (values_.size () == n); + assert (lengths_.size () == n); + assert (formats_.size () == n); + assert (types_.size () == n); + } + } + + query& query:: + operator= (const query& q) + { + if (this != &q) + { + clause_ = q.clause_; + parameters_ = q.parameters_; + bind_ = q.bind_; + + size_t n (bind_.size ()); + + binding_.count = n; + binding_.version++; + + values_ = q.values_; + lengths_ = q.lengths_; + formats_ = q.formats_; + types_ = q.types_; + + native_binding_.count = n; + + assert (values_.size () == n); + assert (lengths_.size () == n); + assert (formats_.size () == n); + assert (types_.size () == n); + + if (n != 0) + { + binding_.bind = &bind_[0]; + + native_binding_.values = &values_[0]; + native_binding_.lengths = &lengths_[0]; + native_binding_.formats = &formats_[0]; + } + } + + return *this; + } + + query& query:: + operator+= (const query& q) + { + size_t n (clause_.size ()); + + if (n != 0 && clause_[n - 1] != ' ' && + !q.clause_.empty () && q.clause_[0] != ' ') + clause_ += ' '; + + clause_ += q.clause_; + + // Reset parameter indexes. + // + bool unquoted (true); + for (std::size_t i (0), e (clause_.size ()), p(1); i < e; ++i) + { + // $'s are legal in identifiers in PostgreSQL. + // + if (clause_[i] == '"') + unquoted = !unquoted; + + if (unquoted && clause_[i] == '$') + { + ostringstream ss; + ss << p++; + clause_[++i] = ss.str()[0]; + } + } + + n = bind_.size (); + + parameters_.insert ( + parameters_.end (), q.parameters_.begin (), q.parameters_.end ()); + + bind_.insert ( + bind_.end (), q.bind_.begin (), q.bind_.end ()); + + values_.insert ( + values_.end (), q.values_.begin (), q.values_.end ()); + + lengths_.insert ( + lengths_.end (), q.lengths_.begin (), q.lengths_.end ()); + + formats_.insert ( + formats_.end (), q.formats_.begin (), q.formats_.end ()); + + types_.insert ( + types_.end (), q.types_.begin (), q.types_.end ()); + + if (n != bind_.size ()) + { + n = bind_.size (); + + binding_.bind = &bind_[0]; + binding_.count = n; + binding_.version++; + + assert (values_.size () == n); + assert (lengths_.size () == n); + assert (formats_.size () == n); + assert (types_.size () == n); + + native_binding_.values = &values_[0]; + native_binding_.lengths = &lengths_[0]; + native_binding_.formats = &formats_[0]; + native_binding_.count = n; + } + + return *this; + } + + void query:: + add (details::shared_ptr<query_param> p) + { + size_t n (clause_.size ()); + + if (n != 0 && clause_[n - 1] != ' ') + clause_ += ' '; + + ostringstream ss; + ss << parameters_.size () + 1; + + clause_ += '$' + ss.str (); + + parameters_.push_back (p); + bind_.push_back (bind ()); + binding_.bind = &bind_[0]; + binding_.count = bind_.size (); + binding_.version++; + + bind* b (&bind_.back ()); + memset (b, 0, sizeof (bind)); + p->bind (b); + + values_.push_back (0); + lengths_.push_back (0); + formats_.push_back (0); + native_binding_.values = &values_[0]; + native_binding_.lengths = &lengths_[0]; + native_binding_.formats = &formats_[0]; + + types_.push_back (p->oid ()); + + // native_binding_.count should always equal binding_.count. + // At this point, we know that we have added one element to + // each array, so there is no need to check. + // + native_binding_.count = binding_.count; + } + + binding& query:: + parameters_binding () const + { + size_t n (parameters_.size ()); + binding& r (binding_); + + if (n == 0) + return r; + + bool inc_ver (false); + bind* b (&bind_[0]); + + for (size_t i (0); i < n; ++i) + { + query_param& p (*parameters_[i]); + + if (p.reference ()) + { + if (p.init ()) + { + p.bind (b + i); + inc_ver = true; + } + } + } + + if (inc_ver) + r.version++; + + return r; + } + + std::string query:: + clause () const + { + if (clause_.empty () || + clause_.compare (0, 6, "WHERE ") == 0 || + clause_.compare (0, 9, "ORDER BY ") == 0 || + clause_.compare (0, 9, "GROUP BY ") == 0 || + clause_.compare (0, 7, "HAVING ") == 0) + return clause_; + else + return "WHERE " + clause_; + } + } +} diff --git a/odb/pgsql/query.hxx b/odb/pgsql/query.hxx new file mode 100644 index 0000000..632fde5 --- /dev/null +++ b/odb/pgsql/query.hxx @@ -0,0 +1,1687 @@ +// file : odb/pgsql/query.hxx +// author : Constantin Michael <constantin@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_PGSQL_QUERY_HXX +#define ODB_PGSQL_QUERY_HXX + +#include <odb/pre.hxx> + +#include <string> +#include <vector> +#include <cstddef> // std::size_t + +#include <odb/query.hxx> + +#include <odb/pgsql/version.hxx> +#include <odb/pgsql/forward.hxx> +#include <odb/pgsql/traits.hxx> +#include <odb/pgsql/binding.hxx> +#include <odb/pgsql/pgsql-oid.hxx> + +#include <odb/details/buffer.hxx> +#include <odb/details/shared-ptr.hxx> + +#include <odb/pgsql/details/export.hxx> + +namespace odb +{ + namespace pgsql + { + template <typename T> + class val_bind + { + public: + explicit + val_bind (const T& v): val (v) {} + + const T& val; + }; + + template <typename T> + class ref_bind + { + public: + explicit + ref_bind (const T& r): ref (r) {} + + const T& ref; + }; + + struct LIBODB_PGSQL_EXPORT query_param: details::shared_base + { + virtual + ~query_param (); + + bool + reference () const + { + return value_ != 0; + } + + virtual bool + init () = 0; + + virtual void + bind (bind*) = 0; + + virtual unsigned int + oid () const = 0; + + protected: + query_param (const void* value) + : value_ (value) + { + } + + protected: + const void* value_; + }; + + // + // + template <typename T, database_type_id ID> + struct query_column; + + class LIBODB_PGSQL_EXPORT query + { + public: + query () + : binding_ (0, 0), native_binding_ (0, 0, 0, 0) + { + } + + explicit + query (const std::string& q) + : clause_ (q), binding_ (0, 0), native_binding_ (0, 0, 0, 0) + { + } + + template <typename T> + explicit + query (val_bind<T> v) + : binding_ (0, 0), native_binding_ (0, 0, 0, 0) + { + append<T, type_traits<T>::db_type_id> (v); + } + + template <typename T> + explicit + query (ref_bind<T> r) + : binding_ (0, 0), native_binding_ (0, 0, 0, 0) + { + append<T, type_traits<T>::db_type_id> (r); + } + + template <database_type_id ID> + query (const query_column<bool, ID>&); + + query (const query&); + + query& + operator= (const query&); + + public: + std::string + clause () const; + + binding& + parameters_binding () const; + + native_binding& + native_parameters_binding () const + { + return native_binding_; + } + + const unsigned int* + parameter_types () const + { + return types_.empty () ? 0 : &types_[0]; + } + + std::size_t + parameter_count () const + { + return parameters_.size (); + } + + public: + template <typename T> + static val_bind<T> + _val (const T& x) + { + return val_bind<T> (x); + } + + template <typename T> + static ref_bind<T> + _ref (const T& x) + { + return ref_bind<T> (x); + } + + public: + query& + operator+= (const query&); + + query& + operator+= (const std::string& q) + { + size_t n (clause_.size ()); + + if (n != 0 && clause_[n - 1] != ' ' && !q.empty () && q[0] != ' ') + clause_ += ' '; + + clause_ += q; + return *this; + } + + template <typename T> + query& + operator+= (val_bind<T> v) + { + append<T, type_traits<T>::db_type_id> (v); + return *this; + } + + template <typename T> + query& + operator+= (ref_bind<T> r) + { + append<T, type_traits<T>::db_type_id> (r); + return *this; + } + + public: + template <typename T, database_type_id ID> + void + append (val_bind<T>); + + template <typename T, database_type_id ID> + void + append (ref_bind<T>); + + private: + void + add (details::shared_ptr<query_param>); + + private: + typedef std::vector<details::shared_ptr<query_param> > parameters_type; + + std::string clause_; + parameters_type parameters_; + + mutable std::vector<bind> bind_; + mutable binding binding_; + + std::vector<char*> values_; + std::vector<int> lengths_; + std::vector<int> formats_; + std::vector<unsigned int> types_; + mutable native_binding native_binding_; + }; + + inline query + operator+ (const query& x, const query& y) + { + query r (x); + r += y; + return r; + } + + template <typename T> + inline query + operator+ (const query& q, val_bind<T> b) + { + query r (q); + r += b; + return r; + } + + template <typename T> + inline query + operator+ (const query& q, ref_bind<T> b) + { + query r (q); + r += b; + return r; + } + + template <typename T> + inline query + operator+ (val_bind<T> b, const query& q) + { + query r; + r += b; + r += q; + return r; + } + + template <typename T> + inline query + operator+ (ref_bind<T> b, const query& q) + { + query r; + r += b; + r += q; + return r; + } + + inline query + operator+ (const query& q, const std::string& s) + { + query r (q); + r += s; + return r; + } + + inline query + operator+ (const std::string& s, const query& q) + { + query r (s); + r += q; + return r; + } + + template <typename T> + inline query + operator+ (const std::string& s, val_bind<T> b) + { + query r (s); + r += b; + return r; + } + + template <typename T> + inline query + operator+ (const std::string& s, ref_bind<T> b) + { + query r (s); + r += b; + return r; + } + + template <typename T> + inline query + operator+ (val_bind<T> b, const std::string& s) + { + query r; + r += b; + r += s; + return r; + } + + template <typename T> + inline query + operator+ (ref_bind<T> b, const std::string& s) + { + query r; + r += b; + r += s; + return r; + } + + inline query + operator&& (const query& x, const query& y) + { + query r ("("); + r += x; + r += ") AND ("; + r += y; + r += ")"; + return r; + } + + inline query + operator|| (const query& x, const query& y) + { + query r ("("); + r += x; + r += ") OR ("; + r += y; + r += ")"; + return r; + } + + inline query + operator! (const query& x) + { + query r ("NOT ("); + r += x; + r += ")"; + return r; + } + + // query_column + // + + template <typename T, typename T2> + class copy_bind: public val_bind<T> + { + public: + explicit + copy_bind (const T2& v): val_bind<T> (val), val (v) {} + + const T val; + }; + + template <typename T> + const T& + type_instance (); + + template <typename T, database_type_id ID> + struct query_column + { + explicit + query_column (const char* name) + : name_ (name) + { + } + + const char* + name () const + { + return name_; + } + + // is_null, is_not_null + // + public: + query + is_null () const + { + query q (name_); + q += "IS NULL"; + return q; + } + + query + is_not_null () const + { + query q (name_); + q += "IS NOT NULL"; + return q; + } + + // in + // + public: + query + in (const T&, const T&) const; + + query + in (const T&, const T&, const T&) const; + + query + in (const T&, const T&, const T&, const T&) const; + + query + in (const T&, const T&, const T&, const T&, const T&) const; + + template <typename I> + query + in_range (I begin, I end) const; + + // = + // + public: + query + equal (const T& v) const + { + return equal (val_bind<T> (v)); + } + + query + equal (val_bind<T> v) const + { + query q (name_); + q += "="; + q.append<T, ID> (v); + return q; + } + + template <typename T2> + query + equal (val_bind<T2> v) const + { + copy_bind<T, T2> c (v.val); + return equal (c); + } + + query + equal (ref_bind<T> r) const + { + query q (name_); + q += "="; + q.append<T, ID> (r); + return q; + } + + friend query + operator== (const query_column& c, const T& v) + { + return c.equal (v); + } + + friend query + operator== (const T& v, const query_column& c) + { + return c.equal (v); + } + + friend query + operator== (const query_column& c, val_bind<T> v) + { + return c.equal (v); + } + + friend query + operator== (val_bind<T> v, const query_column& c) + { + return c.equal (v); + } + + template <typename T2> + friend query + operator== (const query_column& c, val_bind<T2> v) + { + return c.equal (v); + } + + template <typename T2> + friend query + operator== (val_bind<T2> v, const query_column& c) + { + return c.equal (v); + } + + friend query + operator== (const query_column& c, ref_bind<T> r) + { + return c.equal (r); + } + + friend query + operator== (ref_bind<T> r, const query_column& c) + { + return c.equal (r); + } + + // != + // + public: + query + unequal (const T& v) const + { + return unequal (val_bind<T> (v)); + } + + query + unequal (val_bind<T> v) const + { + query q (name_); + q += "!="; + q.append<T, ID> (v); + return q; + } + + template <typename T2> + query + unequal (val_bind<T2> v) const + { + copy_bind<T, T2> c (v.val); + return unequal (c); + } + + query + unequal (ref_bind<T> r) const + { + query q (name_); + q += "!="; + q.append<T, ID> (r); + return q; + } + + friend query + operator!= (const query_column& c, const T& v) + { + return c.unequal (v); + } + + friend query + operator!= (const T& v, const query_column& c) + { + return c.unequal (v); + } + + friend query + operator!= (const query_column& c, val_bind<T> v) + { + return c.unequal (v); + } + + friend query + operator!= (val_bind<T> v, const query_column& c) + { + return c.unequal (v); + } + + template <typename T2> + friend query + operator!= (const query_column& c, val_bind<T2> v) + { + return c.unequal (v); + } + + template <typename T2> + friend query + operator!= (val_bind<T2> v, const query_column& c) + { + return c.unequal (v); + } + + friend query + operator!= (const query_column& c, ref_bind<T> r) + { + return c.unequal (r); + } + + friend query + operator!= (ref_bind<T> r, const query_column& c) + { + return c.unequal (r); + } + + // < + // + public: + query + less (const T& v) const + { + return less (val_bind<T> (v)); + } + + query + less (val_bind<T> v) const + { + query q (name_); + q += "<"; + q.append<T, ID> (v); + return q; + } + + template <typename T2> + query + less (val_bind<T2> v) const + { + copy_bind<T, T2> c (v.val); + return less (c); + } + + query + less (ref_bind<T> r) const + { + query q (name_); + q += "<"; + q.append<T, ID> (r); + return q; + } + + friend query + operator< (const query_column& c, const T& v) + { + return c.less (v); + } + + friend query + operator< (const T& v, const query_column& c) + { + return c.greater (v); + } + + friend query + operator< (const query_column& c, val_bind<T> v) + { + return c.less (v); + } + + friend query + operator< (val_bind<T> v, const query_column& c) + { + return c.greater (v); + } + + template <typename T2> + friend query + operator< (const query_column& c, val_bind<T2> v) + { + return c.less (v); + } + + template <typename T2> + friend query + operator< (val_bind<T2> v, const query_column& c) + { + return c.greater (v); + } + + friend query + operator< (const query_column& c, ref_bind<T> r) + { + return c.less (r); + } + + friend query + operator< (ref_bind<T> r, const query_column& c) + { + return c.greater (r); + } + + // > + // + public: + query + greater (const T& v) const + { + return greater (val_bind<T> (v)); + } + + query + greater (val_bind<T> v) const + { + query q (name_); + q += ">"; + q.append<T, ID> (v); + return q; + } + + template <typename T2> + query + greater (val_bind<T2> v) const + { + copy_bind<T, T2> c (v.val); + return greater (c); + } + + query + greater (ref_bind<T> r) const + { + query q (name_); + q += ">"; + q.append<T, ID> (r); + return q; + } + + friend query + operator> (const query_column& c, const T& v) + { + return c.greater (v); + } + + friend query + operator> (const T& v, const query_column& c) + { + return c.less (v); + } + + friend query + operator> (const query_column& c, val_bind<T> v) + { + return c.greater (v); + } + + friend query + operator> (val_bind<T> v, const query_column& c) + { + return c.less (v); + } + + template <typename T2> + friend query + operator> (const query_column& c, val_bind<T2> v) + { + return c.greater (v); + } + + template <typename T2> + friend query + operator> (val_bind<T2> v, const query_column& c) + { + return c.less (v); + } + + friend query + operator> (const query_column& c, ref_bind<T> r) + { + return c.greater (r); + } + + friend query + operator> (ref_bind<T> r, const query_column& c) + { + return c.less (r); + } + + // <= + // + public: + query + less_equal (const T& v) const + { + return less_equal (val_bind<T> (v)); + } + + query + less_equal (val_bind<T> v) const + { + query q (name_); + q += "<="; + q.append<T, ID> (v); + return q; + } + + template <typename T2> + query + less_equal (val_bind<T2> v) const + { + copy_bind<T, T2> c (v.val); + return less_equal (c); + } + + query + less_equal (ref_bind<T> r) const + { + query q (name_); + q += "<="; + q.append<T, ID> (r); + return q; + } + + friend query + operator<= (const query_column& c, const T& v) + { + return c.less_equal (v); + } + + friend query + operator<= (const T& v, const query_column& c) + { + return c.greater_equal (v); + } + + friend query + operator<= (const query_column& c, val_bind<T> v) + { + return c.less_equal (v); + } + + friend query + operator<= (val_bind<T> v, const query_column& c) + { + return c.greater_equal (v); + } + + template <typename T2> + friend query + operator<= (const query_column& c, val_bind<T2> v) + { + return c.less_equal (v); + } + + template <typename T2> + friend query + operator<= (val_bind<T2> v, const query_column& c) + { + return c.greater_equal (v); + } + + friend query + operator<= (const query_column& c, ref_bind<T> r) + { + return c.less_equal (r); + } + + friend query + operator<= (ref_bind<T> r, const query_column& c) + { + return c.greater_equal (r); + } + + // >= + // + public: + query + greater_equal (const T& v) const + { + return greater_equal (val_bind<T> (v)); + } + + query + greater_equal (val_bind<T> v) const + { + query q (name_); + q += ">="; + q.append<T, ID> (v); + return q; + } + + template <typename T2> + query + greater_equal (val_bind<T2> v) const + { + copy_bind<T, T2> c (v.val); + return greater_equal (c); + } + + query + greater_equal (ref_bind<T> r) const + { + query q (name_); + q += ">="; + q.append<T, ID> (r); + return q; + } + + friend query + operator>= (const query_column& c, const T& v) + { + return c.greater_equal (v); + } + + friend query + operator>= (const T& v, const query_column& c) + { + return c.less_equal (v); + } + + friend query + operator>= (const query_column& c, val_bind<T> v) + { + return c.greater_equal (v); + } + + friend query + operator>= (val_bind<T> v, const query_column& c) + { + return c.less_equal (v); + } + + template <typename T2> + friend query + operator>= (const query_column& c, val_bind<T2> v) + { + return c.greater_equal (v); + } + + template <typename T2> + friend query + operator>= (val_bind<T2> v, const query_column& c) + { + return c.less_equal (v); + } + + friend query + operator>= (const query_column& c, ref_bind<T> r) + { + return c.greater_equal (r); + } + + friend query + operator>= (ref_bind<T> r, const query_column& c) + { + return c.less_equal (r); + } + + // Column comparison. + // + public: + template <typename T2, database_type_id ID2> + query + operator== (const query_column<T2, ID2>& c) const + { + // We can compare columns only if we can compare their C++ types. + // + (void) (sizeof (type_instance<T> () == type_instance<T2> ())); + + query q (name_); + q += "="; + q += c.name (); + return q; + } + + template <typename T2, database_type_id ID2> + query + operator!= (const query_column<T2, ID2>& c) const + { + // We can compare columns only if we can compare their C++ types. + // + (void) (sizeof (type_instance<T> () != type_instance<T2> ())); + + query q (name_); + q += "!="; + q += c.name (); + return q; + } + + template <typename T2, database_type_id ID2> + query + operator< (const query_column<T2, ID2>& c) const + { + // We can compare columns only if we can compare their C++ types. + // + (void) (sizeof (type_instance<T> () < type_instance<T2> ())); + + query q (name_); + q += "<"; + q += c.name (); + return q; + } + + template <typename T2, database_type_id ID2> + query + operator> (const query_column<T2, ID2>& c) const + { + // We can compare columns only if we can compare their C++ types. + // + (void) (sizeof (type_instance<T> () > type_instance<T2> ())); + + query q (name_); + q += ">"; + q += c.name (); + return q; + } + + template <typename T2, database_type_id ID2> + query + operator<= (const query_column<T2, ID2>& c) const + { + // We can compare columns only if we can compare their C++ types. + // + (void) (sizeof (type_instance<T> () <= type_instance<T2> ())); + + query q (name_); + q += "<="; + q += c.name (); + return q; + } + + template <typename T2, database_type_id ID2> + query + operator>= (const query_column<T2, ID2>& c) const + { + // We can compare columns only if we can compare their C++ types. + // + (void) (sizeof (type_instance<T> () >= type_instance<T2> ())); + + query q (name_); + q += ">="; + q += c.name (); + return q; + } + + private: + const char* name_; + }; + + // + // + template <typename T, database_type_id> + struct query_param_impl; + + // BOOLEAN + // + template <typename T> + struct query_param_impl<T, id_boolean>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + init (*static_cast<const T*> (value_)); + return false; + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::boolean; + b->buffer = &image_; + } + + virtual unsigned int + oid () const + { + return bool_oid; + } + + private: + void + init (const T& v) + { + bool dummy; + value_traits<T, id_boolean>::set_image (image_, dummy, v); + } + + private: + bool image_; + }; + + // SMALLINT + // + template <typename T> + struct query_param_impl<T, id_smallint>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + init (*static_cast<const T*> (value_)); + return false; + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::smallint; + b->buffer = &image_; + } + + virtual unsigned int + oid () const + { + return int2_oid; + } + + private: + void + init (const T& v) + { + bool dummy; + value_traits<T, id_smallint>::set_image (image_, dummy, v); + } + + private: + short image_; + }; + + // INTEGER + // + template <typename T> + struct query_param_impl<T, id_integer>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + init (*static_cast<const T*> (value_)); + return false; + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::integer; + b->buffer = &image_; + } + + virtual unsigned int + oid () const + { + return int4_oid; + } + + private: + void + init (const T& v) + { + bool dummy; + value_traits<T, id_integer>::set_image (image_, dummy, v); + } + + private: + int image_; + }; + + // BIGINT + // + template <typename T> + struct query_param_impl<T, id_bigint>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + init (*static_cast<const T*> (value_)); + return false; + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::bigint; + b->buffer = &image_; + } + + virtual unsigned int + oid () const + { + return int8_oid; + } + + private: + void + init (const T& v) + { + bool dummy; + value_traits<T, id_bigint>::set_image (image_, dummy, v); + } + + private: + long long image_; + }; + + // REAL + // + template <typename T> + struct query_param_impl<T, id_real>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + init (*static_cast<const T*> (value_)); + return false; + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::real; + b->buffer = &image_; + } + + virtual unsigned int + oid () const + { + return float4_oid; + } + + private: + void + init (const T& v) + { + bool dummy; + value_traits<T, id_real>::set_image (image_, dummy, v); + } + + private: + float image_; + }; + + // DOUBLE + // + template <typename T> + struct query_param_impl<T, id_double>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + init (*static_cast<const T*> (value_)); + return false; + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::double_; + b->buffer = &image_; + } + + virtual unsigned int + oid () const + { + return float8_oid; + } + + private: + void + init (const T& v) + { + bool dummy; + value_traits<T, id_double>::set_image (image_, dummy, v); + } + + private: + double image_; + }; + + // @@ NUMERIC + // + // template <typename T> + // struct query_param_impl<T, id_numeric>: query_param + // { + // query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + // query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + // virtual bool + // init () + // { + // return init (*static_cast<const T*> (value_)); + // } + + // virtual void + // bind (pgsql::bind* b) + // { + // b->type = bind::numeric; + // b->buffer = buffer_.data (); + // b->buffer_length = static_cast<unsigned long> (buffer_.capacity ()); + // b->length = &size_; + // } + + // private: + // bool + // init (const T& v) + // { + // bool dummy; + // std::size_t size, cap (buffer_.capacity ()); + // value_traits<T, id_decimal>::set_image (buffer_, size, dummy, v); + // size_ = static_cast<unsigned long> (size); + // return cap != buffer_.capacity (); + // } + + // private: + // details::buffer buffer_; + // unsigned long size_; + // }; + + // @@ DATE + // + // template <typename T> + // struct query_param_impl<T, id_date>: query_param + // { + // query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + // query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + // virtual bool + // init () + // { + // init (*static_cast<const T*> (value_)); + // return false; + // } + + // virtual void + // bind (MYSQL_BIND* b) + // { + // b->buffer_type = MYSQL_TYPE_DATE; + // b->buffer = &image_; + // } + + // private: + // void + // init (const T& v) + // { + // bool dummy; + // value_traits<T, id_date>::set_image (image_, dummy, v); + // } + + // private: + // MYSQL_TIME image_; + // }; + + // @@ TIME + // + // template <typename T> + // struct query_param_impl<T, id_time>: query_param + // { + // query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + // query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + // virtual bool + // init () + // { + // init (*static_cast<const T*> (value_)); + // return false; + // } + + // virtual void + // bind (MYSQL_BIND* b) + // { + // b->buffer_type = MYSQL_TYPE_TIME; + // b->buffer = &image_; + // } + + // private: + // void + // init (const T& v) + // { + // bool dummy; + // value_traits<T, id_time>::set_image (image_, dummy, v); + // } + + // private: + // MYSQL_TIME image_; + // }; + + // @@ TIMESTAMP + // + // template <typename T> + // struct query_param_impl<T, id_timestamp>: query_param + // { + // query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + // query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + // virtual bool + // init () + // { + // init (*static_cast<const T*> (value_)); + // return false; + // } + + // virtual void + // bind (MYSQL_BIND* b) + // { + // b->buffer_type = MYSQL_TYPE_TIMESTAMP; + // b->buffer = &image_; + // } + + // private: + // void + // init (const T& v) + // { + // bool dummy; + // value_traits<T, id_timestamp>::set_image (image_, dummy, v); + // } + + // private: + // MYSQL_TIME image_; + // }; + + // STRING + // + template <typename T> + struct query_param_impl<T, id_string>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + return init (*static_cast<const T*> (value_)); + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::text; + b->buffer = buffer_.data (); + b->capacity = buffer_.capacity (); + b->size = &size_; + } + + virtual unsigned int + oid () const + { + return text_oid; + } + + private: + bool + init (const T& v) + { + bool dummy; + std::size_t size, cap (buffer_.capacity ()); + value_traits<T, id_string>::set_image (buffer_, size, dummy, v); + size_ = size; + return cap != buffer_.capacity (); + } + + private: + details::buffer buffer_; + std::size_t size_; + }; + + // BYTEA + // + template <typename T> + struct query_param_impl<T, id_bytea>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + return init (*static_cast<const T*> (value_)); + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::bytea; + b->buffer = buffer_.data (); + b->capacity = buffer_.capacity (); + b->size = &size_; + } + + virtual unsigned int + oid () const + { + return bytea_oid; + } + + private: + bool + init (const T& v) + { + bool dummy; + std::size_t size, cap (buffer_.capacity ()); + value_traits<T, id_bytea>::set_image (buffer_, size, dummy, v); + size_ = size; + return cap != buffer_.capacity (); + } + + private: + details::buffer buffer_; + std::size_t size_; + }; + + // @@ BIT + // + // template <typename T> + // struct query_param_impl<T, id_bit>: query_param + // { + // query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + // query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + // virtual bool + // init () + // { + // init (*static_cast<const T*> (value_)); + // return false; + // } + + // virtual void + // bind (pgsql::bind* b) + // { + // b->type = bind::bit; + // b->buffer = buffer_; + // b->capacity = sizeof (buffer_); + // b->size = &size_; + // } + + // private: + // void + // init (const T& v) + // { + // bool dummy; + // std::size_t size; + // value_traits<T, id_bit>::set_image ( + // buffer_, sizeof (buffer_), size, dummy, v); + // size_ = static_cast<unsigned long> (size); + // } + + // private: + // // Max 64 bit. + // // + // unsigned char buffer_[8]; + // unsigned long size_; + // }; + + // VARBIT + // + template <typename T> + struct query_param_impl<T, id_varbit>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + return init (*static_cast<const T*> (value_)); + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::varbit; + b->buffer = buffer_.data (); + b->capacity = buffer_.capacity (); + b->size = &size_; + } + + virtual unsigned int + oid () const + { + return varbit_oid; + } + + private: + bool + init (const T& v) + { + bool dummy; + std::size_t size, cap (buffer_.capacity ()); + value_traits<T, id_varbit>::set_image (buffer_, size, dummy, v); + size_ = size; + return cap != buffer_.capacity (); + } + + private: + details::buffer buffer_; + std::size_t size_; + }; + + // UUID + // + template <typename T> + struct query_param_impl<T, id_uuid>: query_param + { + query_param_impl (ref_bind<T> r) : query_param (&r.ref) {} + query_param_impl (val_bind<T> v) : query_param (0) {init (v.val);} + + virtual bool + init () + { + init (*static_cast<const T*> (value_)); + return false; + } + + virtual void + bind (pgsql::bind* b) + { + b->type = bind::uuid; + b->buffer = buffer_; + } + + virtual unsigned int + oid () const + { + return uuid_oid; + } + + private: + void + init (const T& v) + { + bool dummy; + value_traits<T, id_uuid>::set_image (buffer_, dummy, v); + } + + private: + unsigned char buffer_[16]; + }; + } +} + +// odb::query specialization for PostgreSQL. +// +namespace odb +{ + template <typename T> + class query<T, pgsql::query>: public object_traits<T>::query_type + { + public: + // We don't define any typedefs here since they may clash with + // column names defined by our base type. + // + + query () + { + } + + explicit + query (const std::string& q) + : object_traits<T>::query_type (q) + { + } + + template <typename T2> + explicit + query (pgsql::val_bind<T2> v) + : object_traits<T>::query_type (pgsql::query (v)) + { + } + + template <typename T2> + explicit + query (pgsql::ref_bind<T2> r) + : object_traits<T>::query_type (pgsql::query (r)) + { + } + + query (const pgsql::query& q) + : object_traits<T>::query_type (q) + { + } + + template <pgsql::database_type_id ID> + query (const pgsql::query_column<bool, ID>& qc) + : object_traits<T>::query_type (qc) + { + } + }; +} + +#include <odb/pgsql/query.ixx> +#include <odb/pgsql/query.txx> + +#include <odb/post.hxx> + +#endif // ODB_PGSQL_QUERY_HXX diff --git a/odb/pgsql/query.ixx b/odb/pgsql/query.ixx new file mode 100644 index 0000000..05561a2 --- /dev/null +++ b/odb/pgsql/query.ixx @@ -0,0 +1,28 @@ +// file : odb/pgsql/query.ixx +// author : Constantin Michael <constantin@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +namespace odb +{ + namespace pgsql + { + template <typename T, database_type_id ID> + inline void query:: + append (val_bind<T> v) + { + add ( + details::shared_ptr<query_param> ( + new (details::shared) query_param_impl<T, ID> (v))); + } + + template <typename T, database_type_id ID> + inline void query:: + append (ref_bind<T> r) + { + add ( + details::shared_ptr<query_param> ( + new (details::shared) query_param_impl<T, ID> (r))); + } + } +} diff --git a/odb/pgsql/query.txx b/odb/pgsql/query.txx new file mode 100644 index 0000000..7d80f2b --- /dev/null +++ b/odb/pgsql/query.txx @@ -0,0 +1,110 @@ +// file : odb/pgsql/query.txx +// author : Constantin Michael <constantin@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +namespace odb +{ + namespace pgsql + { + // query + // + + template <database_type_id ID> + query:: + query (const query_column<bool, ID>& c) + : clause_ (c.name ()), binding_ (0, 0), native_binding_ (0, 0, 0, 0) + { + // Cannot use IS TRUE here since database type can be a non- + // integral type. + // + clause_ += " = "; + append<bool, ID> (val_bind<bool> (true)); + } + + // query_column + // + template <typename T, database_type_id ID> + query query_column<T, ID>:: + in (const T& v1, const T& v2) const + { + query q (name_); + q += "IN ("; + q.append<T, ID> (val_bind<T> (v1)); + q += ","; + q.append<T, ID> (val_bind<T> (v2)); + q += ")"; + return q; + } + + template <typename T, database_type_id ID> + query query_column<T, ID>:: + in (const T& v1, const T& v2, const T& v3) const + { + query q (name_); + q += "IN ("; + q.append<T, ID> (val_bind<T> (v1)); + q += ","; + q.append<T, ID> (val_bind<T> (v2)); + q += ","; + q.append<T, ID> (val_bind<T> (v3)); + q += ")"; + return q; + } + + template <typename T, database_type_id ID> + query query_column<T, ID>:: + in (const T& v1, const T& v2, const T& v3, const T& v4) const + { + query q (name_); + q += "IN ("; + q.append<T, ID> (val_bind<T> (v1)); + q += ","; + q.append<T, ID> (val_bind<T> (v2)); + q += ","; + q.append<T, ID> (val_bind<T> (v3)); + q += ","; + q.append<T, ID> (val_bind<T> (v4)); + q += ")"; + return q; + } + + template <typename T, database_type_id ID> + query query_column<T, ID>:: + in (const T& v1, const T& v2, const T& v3, const T& v4, const T& v5) const + { + query q (name_); + q += "IN ("; + q.append<T, ID> (val_bind<T> (v1)); + q += ","; + q.append<T, ID> (val_bind<T> (v2)); + q += ","; + q.append<T, ID> (val_bind<T> (v3)); + q += ","; + q.append<T, ID> (val_bind<T> (v4)); + q += ","; + q.append<T, ID> (val_bind<T> (v5)); + q += ")"; + return q; + } + + template <typename T, database_type_id ID> + template <typename I> + query query_column<T, ID>:: + in_range (I begin, I end) const + { + query q (name_); + q += "IN ("; + + for (I i (begin); i != end; ++i) + { + if (i != begin) + q += ","; + + q.append<T, ID> (val_bind<T> (*i)); + } + q += ")"; + return q; + } + } +} diff --git a/odb/pgsql/result.hxx b/odb/pgsql/result.hxx new file mode 100644 index 0000000..9510680 --- /dev/null +++ b/odb/pgsql/result.hxx @@ -0,0 +1,78 @@ +// file : odb/pgsql/result.hxx +// author : Constantin Michael <constantin@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_PGSQL_RESULT_HXX +#define ODB_PGSQL_RESULT_HXX + +#include <odb/pre.hxx> + +#include <cstddef> // std::size_t + +#include <odb/result.hxx> +#include <odb/details/shared-ptr.hxx> + +#include <odb/pgsql/version.hxx> +#include <odb/pgsql/forward.hxx> // query, query_params +#include <odb/pgsql/statement.hxx> + +#include <odb/pgsql/details/export.hxx> + +namespace odb +{ + namespace pgsql + { + template <typename T> + class result_impl: public odb::result_impl<T> + { + public: + typedef typename odb::result_impl<T>::pointer_type pointer_type; + typedef typename odb::result_impl<T>::pointer_traits pointer_traits; + + typedef typename odb::result_impl<T>::object_type object_type; + typedef typename odb::result_impl<T>::id_type id_type; + typedef typename odb::result_impl<T>::object_traits object_traits; + + + virtual + ~result_impl (); + + result_impl (const query&, + details::shared_ptr<select_statement>, + object_statements<object_type>&); + + virtual void + load (object_type&); + + virtual id_type + load_id (); + + virtual void + next (); + + virtual void + cache (); + + virtual std::size_t + size (); + + using odb::result_impl<T>::current; + + private: + void + load_image (); + + private: + details::shared_ptr<select_statement> statement_; + object_statements<object_type>& statements_; + std::size_t count_; + }; + } +} + +#include <odb/pgsql/result.txx> + +#include <odb/post.hxx> + +#endif // ODB_PGSQL_RESULT_HXX diff --git a/odb/pgsql/result.txx b/odb/pgsql/result.txx new file mode 100644 index 0000000..f96fe81 --- /dev/null +++ b/odb/pgsql/result.txx @@ -0,0 +1,134 @@ +// file : odb/pgsql/result.txx +// author : Constantin Michael <constantin@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#include <odb/exceptions.hxx> + +namespace odb +{ + namespace pgsql + { + template <typename T> + result_impl<T>:: + ~result_impl () + { + } + + template <typename T> + result_impl<T>:: + result_impl (const query&, + details::shared_ptr<select_statement> st, + object_statements<object_type>& sts) + : odb::result_impl<T> (sts.connection ().database ()), + statement_ (st), + statements_ (sts), + count_ (0) + { + } + + template <typename T> + void result_impl<T>:: + load (object_type& obj) + { + load_image (); + + // This is a top-level call so the statements cannot be locked. + // + assert (!statements_.locked ()); + typename object_statements<object_type>::auto_lock l (statements_); + + typename object_traits::image_type& i (statements_.image ()); + object_traits::init (obj, i, this->database ()); + + // Initialize the id image and binding and load the rest of the object + // (containers, etc). + // + typename object_traits::id_image_type& idi (statements_.id_image ()); + object_traits::init (idi, object_traits::id (i)); + + binding& idb (statements_.id_image_binding ()); + if (idi.version != statements_.id_image_version () || idb.version == 0) + { + object_traits::bind (idb.bind, idi); + statements_.id_image_version (idi.version); + idb.version++; + } + + object_traits::load_ (statements_, obj); + + statements_.load_delayed (); + l.unlock (); + } + + template <typename T> + typename result_impl<T>::id_type result_impl<T>:: + load_id () + { + load_image (); + return object_traits::id (statements_.image ()); + } + + template <typename T> + void result_impl<T>:: + next () + { + this->current (pointer_type ()); + + // Increment the position and postpone the actual row fetching + // until later. This way if the same object is loaded in between + // iteration, the image won't be messed up. + // + if (++count_ > statement_->result_size ()) + this->end_ = true; + } + + template <typename T> + void result_impl<T>:: + load_image () + { + // The image can grow between calls to load() as a result of other + // statements execution. + // + typename object_traits::image_type& im (statements_.image ()); + + if (im.version != statements_.out_image_version ()) + { + binding& b (statements_.out_image_binding ()); + object_traits::bind (b.bind, im, true); + statements_.out_image_version (im.version); + b.version++; + } + + select_statement::result r (statement_->fetch ()); + + if (r == select_statement::truncated) + { + if (object_traits::grow (im, statements_.out_image_truncated ())) + im.version++; + + if (im.version != statements_.out_image_version ()) + { + binding& b (statements_.out_image_binding ()); + object_traits::bind (b.bind, im, true); + statements_.out_image_version (im.version); + b.version++; + statement_->refetch (); + } + } + } + + template <typename T> + void result_impl<T>:: + cache () + { + } + + template <typename T> + std::size_t result_impl<T>:: + size () + { + return statement_->result_size (); + } + } +} |