5251bf3a
 Steven de Ridder
Initial commit. d...
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
#include "ormhandler.h"
#include "dcxmlconfig.h"
#include "log.h"
#include "dbrelation.h"
#include "threadcontext.h"
#include <QSqlRecord>
#include <QSqlField>
#include <QSqlRelation>
#include <QSqlIndex>
#include <QtDebug>
using namespace osdev::components;
typedef QList<DbRelation*> Relations;
OrmHandler::OrmHandler(QObject *_parent)
: QObject( _parent )
, m_qhOrmTables()
, m_dbConnection()
, m_className( "OrmHandler" )
{
m_dbConnection.setCredentials( DCXmlConfig::Instance().getDbCredentials() );
// Check if a watchdog is required and connect those. If a database goes offline, all data should be redirected to the TransQueue.
if( DCXmlConfig::Instance().getEnableDbWatchDog() )
{
// Start the watchdog and set the interval.
m_dbConnection.startDbWatchDog( DCXmlConfig::Instance().getDbCheckInterval() );
}
}
OrmHandler::~OrmHandler()
{
}
void OrmHandler::start()
{
// connect the database.
LogInfo( m_className, "Connecting to database.." );
if( m_dbConnection.connectDatabase() )
{
// Read configuration
QStringList tableList = DCXmlConfig::Instance().getOrmTables();
if( 0 == tableList.count() )
{
tableList = m_dbConnection.getTableNames();
}
LogInfo( m_className,
QString("Connected to database %1") .arg( m_dbConnection.getDatabaseName() ) );
// First make sure we have all tables created, before we create all relations...
for( const QString& tableName : tableList )
{
createOrmObject( tableName );
}
// -------------------------------------------------
// Create all relations on the same list of tables.
for( const QString& tableName : tableList )
{
QString status;
// If creation of the object succeeded it is safe to add the relations.
switch( createOrmRelation( tableName ) )
{
case OrmStatus::OrmStatusFailed:
status = "failed.";
break;
case OrmStatus::OrmStatusNoRelation:
status = "not created (As there are none.)";
break;
case OrmStatus::OrmStatusSuccess:
status = "succeeded.";
break;
}
LogInfo( "[OrmHandler::start]", QString( "Creation of ORM Relation for table : %1 %2" ).arg( tableName ).arg( status ) );
}
}
else
{
LogInfo( m_className,
QString( "Connection to database %1 failed with error : %2" )
.arg( m_dbConnection.getDatabaseName() )
.arg( m_dbConnection.getLastError() ) );
//@todo : This will produce a SegmentationFault for now due to mutlihreaded pluginloading.
// This should be fixed in future releases by implementing a nice rolldown with locking
// mechanisms and shutdown events.
QMetaObject::invokeMethod( qApp, "quit", Qt::QueuedConnection );
}
}
bool OrmHandler::createOrmObject( const QString& _table )
{
bool l_result = false;
OrmTable *pModel = new OrmTable( m_dbConnection, this );
if ( pModel )
{
pModel->setTrackField( DCXmlConfig::Instance().getRecordTrackFieldName() );
pModel->setTable( m_dbConnection.quoteTableName( _table ) );
m_qhOrmTables.insert( _table, pModel );
// cascade connect the rejectedsignal.
connect( pModel, &OrmTable::signalRejectedData, this, &OrmHandler::signalRejectedData );
l_result = true;
}
return l_result;
}
OrmHandler::OrmStatus OrmHandler::createOrmRelation( const QString& _table )
{
OrmStatus ormResult = OrmStatus::OrmStatusFailed;
Relations lstRelations = m_dbConnection.getRelationByTableName( _table );
if( lstRelations.isEmpty() )
{
return OrmStatus::OrmStatusNoRelation;
}
// Each relation found should be added to the table.
for( auto& relation : lstRelations )
{
// Save the relation to the table administration.
m_qhOrmTables.value( _table )->saveRelation( relation->constraintName(), relation );
// Create a QSortProxyFilterModel and add to the table.
QSortFilterProxyModel *pModel = new QSortFilterProxyModel();
pModel->setSourceModel( m_qhOrmTables.value( relation->foreignTable() ) );
m_qhOrmTables.value( _table )->setRelatedTable( relation->foreignTable(), pModel );
}
// Check if the number of relations found is equal to the number of relations
// added to the ORM-table.
if( lstRelations.count() == m_qhOrmTables.value( _table )->numberOfRelations() )
{
ormResult = OrmStatus::OrmStatusSuccess;
}
else
{
LogDebug( "[OrmHandler::createOrmRelation]", QString( "Number of relations : %1 => Number of relations registered : %2" ).arg( lstRelations.count() ).arg( m_qhOrmTables.value( _table )->numberOfRelations() ) );
ormResult = OrmStatus::OrmStatusFailed;
}
return ormResult;
}
void OrmHandler::receiveData( const QSharedPointer<ORMRelData>& dataContainer )
{
ThreadContextScope tcs( dataContainer->traceId() );
LogDebug( "[OrmHandler::receiveData]", dataContainer->asString() );
// Check if we have an actual database running. *if* it died, redirect immediately
if( m_dbConnection.isOpen() )
{
if( m_qhOrmTables.contains( dataContainer->getMainTableName() ) )
{
LogDebug("[OrmHandler::receiveData]", QString("Table entry found for %1").arg( dataContainer->getMainTableName() ) );
m_qhOrmTables.value( dataContainer->getMainTableName() )->writeData( dataContainer );
}
else
{
LogWarning("[OrmHandler::receiveData]", QString("No table entry found for %1").arg( dataContainer->getMainTableName() ) );
emit signalRejectedData( dataContainer );
}
}
else
{
emit signalRejectedData( dataContainer );
}
}
QString OrmHandler::getPrimaryKey( const QString& tableName ) const
{
if( m_qhOrmTables.contains( tableName ) )
{
return m_qhOrmTables.value( tableName )->primaryKey().name();
}
return QString();
}
|
