JSONArray filters;
Integer maxSize;
boolean isMaxResultsLimitBlocking;
IDataStore dataStore;
JDBCDataSet dataSet;
JSONDataWriter dataSetWriter;
Query query;
IStatement statement;
Integer resultNumber;
JSONObject gridDataFeed = new JSONObject();
Monitor totalTimeMonitor = null;
Monitor errorHitsMonitor;
logger.debug("IN");
try {
super.service(request, response);
totalTimeMonitor = MonitorFactory.start("QbeEngine.executeQueryAction.totalTime");
start = getAttributeAsInteger( START );
logger.debug("Parameter [" + START + "] is equals to [" + start + "]");
limit = getAttributeAsInteger( LIMIT );
logger.debug("Parameter [" + LIMIT + "] is equals to [" + limit + "]");
filters = getAttributeAsJSONArray( FILTERS );
logger.debug("Parameter [" + FILTERS + "] is equals to [" + filters + "]");
Assert.assertNotNull(filters, "Parameter [" + FILTERS + "] cannot be null");
Assert.assertTrue(filters.length() > 0, "GroupBy fileds list cannot be empty");
maxSize = QbeEngineConfig.getInstance().getResultLimit();
logger.debug("Configuration setting [" + "QBE.QBE-SQL-RESULT-LIMIT.value" + "] is equals to [" + (maxSize != null? maxSize: "none") + "]");
isMaxResultsLimitBlocking = QbeEngineConfig.getInstance().isMaxResultLimitBlocking();
logger.debug("Configuration setting [" + "QBE.QBE-SQL-RESULT-LIMIT.isBlocking" + "] is equals to [" + isMaxResultsLimitBlocking + "]");
Assert.assertNotNull(getEngineInstance(), "It's not possible to execute " + this.getActionName() + " service before having properly created an instance of EngineInstance class");
// STEP 1: modify the query according to the input that come from the form
query = getEngineInstance().getQueryCatalogue().getFirstQuery();
// ... query transformation goes here
logger.debug("Making a deep copy of the original query...");
String store = ((JSONObject)SerializerFactory.getSerializer("application/json").serialize(query, getEngineInstance().getDataSource(), getLocale())).toString();
Query copy = SerializerFactory.getDeserializer("application/json").deserializeQuery(store, getEngineInstance().getDataSource());
logger.debug("Deep copy of the original query produced");
String jsonEncodedFormState = getAttributeAsString( FORM_STATE );
logger.debug("Form state retrieved as a string: " + jsonEncodedFormState);
JSONObject formState = new JSONObject(jsonEncodedFormState);
logger.debug("Form state converted into a valid JSONObject: " + formState.toString(3));
JSONObject template = (JSONObject) getEngineInstance().getFormState().getConf();
logger.debug("Form viewer template retrieved.");
FormViewerQueryTransformer formViewerQueryTransformer = new FormViewerQueryTransformer();
formViewerQueryTransformer.setFormState(formState);
formViewerQueryTransformer.setTemplate(template);
logger.debug("Applying Form Viewer query transformation...");
query = formViewerQueryTransformer.execTransformation(copy);
logger.debug("Applying Form Viewer query transformation...");
updatePromptableFiltersValue(query);
getEngineInstance().setActiveQuery(query);
// STEP 2: prepare statment and obtain the corresponding sql query
statement = getEngineInstance().getStatment();
statement.setParameters( getEnv() );
String jpaQueryStr = statement.getQueryString();
String sqlQuery = statement.getSqlQueryString();
logger.debug("Executable query (HQL/JPQL): [" + jpaQueryStr+ "]");
//logger.debug("Executable query (SQL): [" + sqlQuery + "]");
UserProfile userProfile = (UserProfile)getEnv().get(EngineConstants.ENV_USER_PROFILE);
//auditlogger.info("[" + userProfile.getUserId() + "]:: HQL: " + hqlQuery);
//auditlogger.info("[" + userProfile.getUserId() + "]:: SQL: " + sqlQuery);
// STEP 3: transform the sql query
FilterQueryTransformer transformer = new FilterQueryTransformer();
List selectFields = SqlUtils.getSelectFields(sqlQuery);
List queryFields = query.getDataMartSelectFields(true);
for(int i = 0; i < queryFields.size(); i++) {
ISelectField queryField = (ISelectField)queryFields.get(i);
String[] f = (String[])selectFields.get(i);
transformer.addColumn(f[1]!=null? f[1]:f[0], f[1]!=null? f[1]:f[0]);
}
for(int i = 0; i < filters.length(); i++) {
JSONObject filter = filters.getJSONObject(i);
String columnName = filter.getString("columnName");
String value = filter.getString("value");
int fieldIndex = query.getSelectFieldIndex(columnName);
String[] f = (String[])selectFields.get(fieldIndex);
transformer.addFilter(f[1]!=null? f[1]:f[0], value);
}
sqlQuery = (String)transformer.transformQuery(sqlQuery);
// put the query into session
this.setAttributeInSession(LAST_DETAIL_QUERY, sqlQuery);
// STEP 4: execute the query
try {
logger.debug("Executing query: [" + sqlQuery + "]");
auditlogger.info("[" + userProfile.getUserId() + "]:: SQL: " + sqlQuery);
dataSet = new JDBCDataSet();
//Session session = getDatamartModel().getDataSource().getSessionFactory().openSession();
ConnectionDescriptor connection = (ConnectionDescriptor)getDataSource().getConfiguration().loadDataSourceProperties().get("connection");
DataSource dataSource = new DataSource();
dataSource.setJndi(connection.getJndiName());
dataSource.setHibDialectName(connection.getDialect());
dataSource.setUrlConnection(connection.getUrl());
dataSource.setDriver(connection.getDriverClass());
dataSource.setUser(connection.getUsername());
dataSource.setPwd(connection.getPassword());
dataSet.setDataSource(dataSource);
dataSet.setQuery(sqlQuery);
dataSet.loadData(start, limit, -1);
dataStore = dataSet.getDataStore();
IDataStoreMetaData dataStoreMetadata = dataStore.getMetaData();
for(int i = 0; i < dataStoreMetadata.getFieldCount(); i++) {
ISelectField queryField = (ISelectField)queryFields.get(i);
dataStoreMetadata.changeFieldAlias(i, queryField.getAlias());
}
} catch (Exception e) {
logger.debug("Query execution aborted because of an internal exceptian");
SpagoBIEngineServiceException exception;
String message;
message = "An error occurred in " + getActionName() + " service while executing query: [" + statement.getQueryString() + "]";
exception = new SpagoBIEngineServiceException(getActionName(), message, e);
exception.addHint("Check if the query is properly formed: [" + statement.getQueryString() + "]");
exception.addHint("Check connection configuration");
exception.addHint("Check the qbe jar file");
throw exception;
}
logger.debug("Query executed succesfully");
//dataStore.getMetaData().setProperty("resultNumber", new Integer( (int)dataStore.getRecordsCount() ));
resultNumber = (Integer)dataStore.getMetaData().getProperty("resultNumber");
Assert.assertNotNull(resultNumber, "property [resultNumber] of the dataStore returned by loadData method of the class [" + dataSet.getClass().getName()+ "] cannot be null");
logger.debug("Total records: " + resultNumber);
boolean overflow = maxSize != null && resultNumber >= maxSize;
if (overflow) {
logger.warn("Query results number [" + resultNumber + "] exceeds max result limit that is [" + maxSize + "]");
auditlogger.info("[" + userProfile.getUserId() + "]:: max result limit [" + maxSize + "] exceeded with SQL: " + sqlQuery);
}
dataSetWriter = new JSONDataWriter();
gridDataFeed = (JSONObject)dataSetWriter.write(dataStore);
try {
writeBackToClient( new JSONSuccess(gridDataFeed) );
} catch (IOException e) {
String message = "Impossible to write back the responce to the client";