X-Git-Url: https://git.teslayout.com/public/public/public/?a=blobdiff_plain;f=source%2Fdbms.mysql%2FOutputBind.cpp;fp=source%2Fdbms.mysql%2FOutputBind.cpp;h=016b9e9dfb131980d7db3def65465ca0c79ae09b;hb=78be86969d2f26a9084b0c4af6ce43d5fa4ed3fd;hp=0000000000000000000000000000000000000000;hpb=a3b95648bd76140ef55e0b5941d423eee6c3856f;p=anna.git

diff --git a/source/dbms.mysql/OutputBind.cpp b/source/dbms.mysql/OutputBind.cpp
new file mode 100644
index 0000000..016b9e9
--- /dev/null
+++ b/source/dbms.mysql/OutputBind.cpp
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+// ANNA - Anna is Not Nothingness Anymore                                                         //
+//                                                                                                //
+// (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
+//                                                                                                //
+// See project site at http://redmine.teslayout.com/projects/anna-suite                           //
+// See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //
+
+
+#include <mysql/mysql.h>
+
+#include <anna/config/defines.hpp>
+#include <anna/core/tracing/Logger.hpp>
+#include <anna/core/DataBlock.hpp>
+
+#include <anna/dbms/Float.hpp>
+#include <anna/dbms/ShortBlock.hpp>
+#include <anna/dbms/LongBlock.hpp>
+#include <anna/dbms/String.hpp>
+#include <anna/dbms/Date.hpp>
+#include <anna/dbms/TimeStamp.hpp>
+
+#include <anna/dbms.mysql/mysql.hpp>
+
+using namespace anna;
+using namespace std;
+
+OutputBind::OutputBind(const char* name, dbms::Data& data) :
+  dbms::OutputBind(name, data),
+  BaseBind(data) {
+  a_blob = (data.getType() == Data::Type::LongBlock) ? new Blob : NULL;
+}
+
+OutputBind::~OutputBind() {
+  delete a_blob;
+}
+
+/*
+ * El dato de LONG BLOB se recoge según cuenta:
+ * http://dev.mysql.com/doc/refman/4.1/en/mysql-stmt-fetch.html.
+ */
+void OutputBind::prepare(anna::dbms::Statement* dbmsStmt, anna::dbms::Connection*, const int pos)
+throw(RuntimeException) {
+  st_mysql_bind* bind = static_cast <dbms::mysql::Statement*>(dbmsStmt)->getBindResults() + pos;
+  Data& data = anna::dbms::Bind::getData();
+  BaseBind::setupBind(*bind, data);
+
+  if(data.getType() == Data::Type::LongBlock) {
+    dbms::mysql::Statement* myStmt = static_cast <dbms::mysql::Statement*>(dbmsStmt);
+    a_blob->stmt = *myStmt;
+    a_blob->binds = myStmt->getBindResults();
+    a_blob->pos = pos;
+    bind->buffer_type = MYSQL_TYPE_BLOB;
+    bind->buffer = NULL;
+    bind->buffer_length = 0;
+    bind->length = &a_length;
+  }
+}
+
+/*
+ * Transfiere la información del los MYSQL_BIND del API C de MySQL a las
+ * estructuras dbms::Data de nuestro programa C++.
+ */
+void OutputBind::decode() const
+throw(RuntimeException) {
+  OutputBind* _this = const_cast <OutputBind*>(this);
+  char* str;
+  Data& data = _this->getData();
+  data.setNull(a_nullIndicator == true);
+
+  switch(data.getType()) {
+  case Data::Type::String:
+    str = (char*) data.getBuffer();
+
+    if(data.isNull() == true)
+      *str = 0;
+    else
+      dbms::String::strip(str);
+
+    break;
+  case Data::Type::Float:
+
+    if(data.isNull() == true)
+      static_cast <dbms::Float&>(data) = 0.0;
+
+    break;
+  case Data::Type::Date:
+  case Data::Type::TimeStamp:
+    _this->decodeDate(data);
+    break;
+  case Data::Type::Integer:
+    throw RuntimeException("anna::dbms::mysql::OutputBind::decode not implemented for Data::Type::Integer", ANNA_FILE_LOCATION);
+    break;
+  case Data::Type::ShortBlock:
+    throw RuntimeException("anna::dbms::mysql::OutputBind::decode not implemented for Data::Type::ShortBlock", ANNA_FILE_LOCATION);
+    break;
+  case Data::Type::LongBlock:
+
+    try {
+      _this->decodeLongBlob(data);
+    } catch(dbms::DatabaseException& edb) {
+      throw RuntimeException(edb);
+    }
+
+    break;
+  }
+}
+
+void OutputBind::do_write(const dbms::LongBlock&) const
+throw(RuntimeException, dbms::DatabaseException) {
+}
+
+/*
+ * El m�todo BaseBind::setupBind asocia� el contenido de la variable
+ * a_time al buffer de salida de la sentencia SQL, as� que el contenido
+ * de la columna est� contenido ah�. S�lo tendremos que copiar dichos
+ * contenidos en la variable C++ de nuestro entorno.
+ */
+void OutputBind::decodeDate(dbms::Data& data)
+throw() {
+  if(data.isNull() == true)
+    return;
+
+  Date& date = static_cast <Date&>(data);
+  date.setYear(a_time->year);
+  date.setMonth(a_time->month);
+  date.setDay(a_time->day);
+  date.setHour(a_time->hour);
+  date.setMinute(a_time->minute);
+  date.setSecond(a_time->second);
+
+  if(data.getType() == Data::Type::TimeStamp)
+    static_cast <dbms::TimeStamp&>(data).setFractionalSecond(a_time->second_part);
+}
+
+/*
+ * Según http://dev.mysql.com/doc/refman/4.1/en/mysql-stmt-fetch.html
+ *
+ * Recoge el contenido total de BLOB en partes que va componiendo sobre el
+ * DataBlock final asociado al anna::dbms::LongBlock sobre el que trabaja el
+ * programador final.
+ */
+void OutputBind::decodeLongBlob(dbms::Data& data) const
+throw(RuntimeException, dbms::DatabaseException) {
+  const int bufferSize = a_blob->buffer.getMaxSize();
+  st_mysql_bind& bind = a_blob->binds [a_blob->pos];
+  DataBlock& target = static_cast <dbms::LongBlock&>(data).getValue();
+  const int maxloop = *bind.length / bufferSize;
+  const int remainder = *bind.length % bufferSize;
+  int offset = 0;
+  target.clear();
+  bind.buffer = (void*) a_blob->buffer.getData();
+
+  for(int iloop = 0; iloop < maxloop; iloop ++) {
+    bind.buffer_length = bufferSize;
+    anna_dbms_mysql_check(
+      mysql_stmt_fetch_column(a_blob->stmt, a_blob->binds, a_blob->pos, offset), a_blob->stmt
+    );
+    target += DataBlock((const char*) bind.buffer, bind.buffer_length, false);
+    offset += bufferSize;
+  }
+
+  if(remainder) {
+    bind.buffer_length = remainder;
+    anna_dbms_mysql_check(
+      mysql_stmt_fetch_column(a_blob->stmt, a_blob->binds, a_blob->pos, offset), a_blob->stmt
+    );
+    target += DataBlock((const char*) bind.buffer, remainder, false);
+  }
+}
+
+OutputBind::Blob::Blob() :
+  buffer(true) {
+  buffer.allocate(64 * 1024);
+}