public List<EventBean> poll(Object[] lookupValues) {
List<EventBean> rowResult = null;
try {
Object invocationResult = method.invoke(null, lookupValues);
if (invocationResult != null) {
if (isArray) {
int length = Array.getLength(invocationResult);
if (length > 0) {
rowResult = new ArrayList<EventBean>();
for (int i = 0; i < length; i++) {
Object value = Array.get(invocationResult, i);
if (value == null) {
log.warn(
"Expected non-null return result from method '"
+ method.getName()
+ "', but received null value");
continue;
}
EventBean theEvent;
if (useMapType) {
if (!(value instanceof Map)) {
log.warn(
"Expected Map-type return result from method '"
+ method.getName()
+ "', but received type '"
+ value.getClass()
+ "'");
continue;
}
Map mapValues = (Map) value;
theEvent = eventAdapterService.adapterForTypedMap(mapValues, eventType);
} else {
theEvent = eventAdapterService.adapterForBean(value);
}
rowResult.add(theEvent);
}
}
} else {
rowResult = new LinkedList<EventBean>();
EventBean theEvent;
if (useMapType) {
if (!(invocationResult instanceof Map)) {
log.warn(
"Expected Map-type return result from method '"
+ method.getName()
+ "', but received type '"
+ invocationResult.getClass()
+ "'");
} else {
Map mapValues = (Map) invocationResult;
theEvent = eventAdapterService.adapterForTypedMap(mapValues, eventType);
rowResult.add(theEvent);
}
} else {
theEvent = eventAdapterService.adapterForBean(invocationResult);
rowResult.add(theEvent);
}
}
}
} catch (InvocationTargetException ex) {
throw new EPException(
"Method '"
+ method.getName()
+ "' of class '"
+ method.getJavaMethod().getDeclaringClass().getName()
+ "' reported an exception: "
+ ex.getTargetException(),
ex.getTargetException());
}
return rowResult;
}
private List<EventBean> execute(
PreparedStatement preparedStatement, Object[] lookupValuePerStream) {
if (ExecutionPathDebugLog.isDebugEnabled && log.isInfoEnabled()) {
log.info(".execute Executing prepared statement '" + preparedStatementText + "'");
}
// set parameters
SQLInputParameterContext inputParameterContext = null;
if (columnTypeConversionHook != null) {
inputParameterContext = new SQLInputParameterContext();
}
int count = 1;
for (int i = 0; i < lookupValuePerStream.length; i++) {
try {
Object parameter = lookupValuePerStream[i];
if (ExecutionPathDebugLog.isDebugEnabled && log.isInfoEnabled()) {
log.info(
".execute Setting parameter "
+ count
+ " to "
+ parameter
+ " typed "
+ ((parameter == null) ? "null" : parameter.getClass()));
}
if (columnTypeConversionHook != null) {
inputParameterContext.setParameterNumber(i + 1);
inputParameterContext.setParameterValue(parameter);
parameter = columnTypeConversionHook.getParameterValue(inputParameterContext);
}
setObject(preparedStatement, count, parameter);
} catch (SQLException ex) {
throw new EPException("Error setting parameter " + count, ex);
}
count++;
}
// execute
ResultSet resultSet;
if (enableJDBCLogging && jdbcPerfLog.isInfoEnabled()) {
long startTimeNS = System.nanoTime();
long startTimeMS = System.currentTimeMillis();
try {
resultSet = preparedStatement.executeQuery();
} catch (SQLException ex) {
throw new EPException("Error executing statement '" + preparedStatementText + '\'', ex);
}
long endTimeNS = System.nanoTime();
long endTimeMS = System.currentTimeMillis();
jdbcPerfLog.info(
"Statement '"
+ preparedStatementText
+ "' delta nanosec "
+ (endTimeNS - startTimeNS)
+ " delta msec "
+ (endTimeMS - startTimeMS));
} else {
try {
resultSet = preparedStatement.executeQuery();
} catch (SQLException ex) {
throw new EPException("Error executing statement '" + preparedStatementText + '\'', ex);
}
}
// generate events for result set
List<EventBean> rows = new LinkedList<EventBean>();
try {
SQLColumnValueContext valueContext = null;
if (columnTypeConversionHook != null) {
valueContext = new SQLColumnValueContext();
}
SQLOutputRowValueContext rowContext = null;
if (outputRowConversionHook != null) {
rowContext = new SQLOutputRowValueContext();
}
int rowNum = 0;
while (resultSet.next()) {
int colNum = 1;
Map<String, Object> row = new HashMap<String, Object>();
for (Map.Entry<String, DBOutputTypeDesc> entry : outputTypes.entrySet()) {
String columnName = entry.getKey();
Object value;
DatabaseTypeBinding binding = entry.getValue().getOptionalBinding();
if (binding != null) {
value = binding.getValue(resultSet, columnName);
} else {
value = resultSet.getObject(columnName);
}
if (columnTypeConversionHook != null) {
valueContext.setColumnName(columnName);
valueContext.setColumnNumber(colNum);
valueContext.setColumnValue(value);
valueContext.setResultSet(resultSet);
value = columnTypeConversionHook.getColumnValue(valueContext);
}
row.put(columnName, value);
colNum++;
}
EventBean eventBeanRow = null;
if (this.outputRowConversionHook == null) {
eventBeanRow = eventAdapterService.adapterForTypedMap(row, eventType);
} else {
rowContext.setValues(row);
rowContext.setRowNum(rowNum);
rowContext.setResultSet(resultSet);
Object rowData = outputRowConversionHook.getOutputRow(rowContext);
if (rowData != null) {
eventBeanRow =
eventAdapterService.adapterForTypedBean(rowData, (BeanEventType) eventType);
}
}
if (eventBeanRow != null) {
rows.add(eventBeanRow);
rowNum++;
}
}
} catch (SQLException ex) {
throw new EPException(
"Error reading results for statement '" + preparedStatementText + '\'', ex);
}
if (enableJDBCLogging && jdbcPerfLog.isInfoEnabled()) {
jdbcPerfLog.info("Statement '" + preparedStatementText + "' " + rows.size() + " rows");
}
try {
resultSet.close();
} catch (SQLException ex) {
throw new EPException("Error closing statement '" + preparedStatementText + '\'', ex);
}
return rows;
}