@CliCommand(value = "columns", help = "list all streams querys into engine")
public String listQuerys(
@CliOption(
key = {"stream"},
help = "The stream name",
mandatory = true,
optionContext = "stream")
final String streamName) {
// XXX create new renderer to render this table
try {
List<ColumnNameTypeValue> columnsValues = ssaw.api().columnsFromStream(streamName);
List<String> columns = Arrays.asList("Column", "Type");
List<Map<String, Object>> data = new ArrayList<>();
for (ColumnNameTypeValue columnValue : columnsValues) {
Map<String, Object> row = new HashMap<>();
row.put("Column", columnValue.getColumn());
row.put("Type", columnValue.getType());
data.add(row);
}
return TableRenderer.renderMapDataAsTable(data, columns);
} catch (StratioStreamingException e) {
throw new StreamingShellException(e);
}
}
public int enlargeStream(
String streamName, List<ColumnNameTypeValue> columns, Boolean raiseException)
throws ServiceException {
int addedColumns = 0;
StreamDefinition streamMetaData = siddhiManager.getStreamDefinition(streamName);
for (ColumnNameTypeValue columnNameTypeValue : columns) {
if (!SiddhiUtils.columnAlreadyExistsInStream(
columnNameTypeValue.getColumn(), streamMetaData)) {
addedColumns++;
// JPFM -- Updating the columns in streamStatusDao
streamStatusDao.addColumn(streamName, columnNameTypeValue);
streamMetaData.attribute(
columnNameTypeValue.getColumn(), getSiddhiType(columnNameTypeValue.getType()));
} else {
if (raiseException) {
throw new ServiceException(
String.format(
"Alter stream error, Column %s already " + "exists.",
columnNameTypeValue.getColumn()));
}
}
}
return addedColumns;
}
public void createInternalStream(String streamName, List<ColumnNameTypeValue> columns) {
StreamDefinition newStream = QueryFactory.createStreamDefinition().name(streamName);
for (ColumnNameTypeValue column : columns) {
newStream.attribute(column.getColumn(), getSiddhiType(column.getType()));
}
siddhiManager.defineStream(newStream);
streamStatusDao.createInferredStream(streamName, columns);
}