@Override
public void visit(DerivedColumn obj) {
if (obj.getExpression() instanceof Function) {
visitNode(obj.getExpression());
} else {
ColumnReference column = (ColumnReference) obj.getExpression();
this.selectedColumns.add(column.getMetadataObject().getName());
}
}
public ObjectExecution(
Select query,
@SuppressWarnings("unused") RuntimeMetadata metadata,
ObjectExecutionFactory factory,
ObjectConnection connection,
ExecutionContext executionContext)
throws TranslatorException {
this.factory = factory;
this.query = query;
this.connection = connection;
this.executionContext = executionContext;
projects = new ArrayList<CompiledScript>(query.getDerivedColumns().size());
for (DerivedColumn dc : query.getDerivedColumns()) {
ColumnReference cr = (ColumnReference) dc.getExpression();
String name = null;
if (cr.getMetadataObject() != null) {
Column c = cr.getMetadataObject();
name = getNameInSource(c);
} else {
name = cr.getName();
}
if (name.equalsIgnoreCase("this")) { // $NON-NLS-1$
projects.add(null);
} else {
try {
projects.add(scriptEngine.compile(OBJECT_NAME + "." + name)); // $NON-NLS-1$
} catch (ScriptException e) {
throw new TranslatorException(e);
}
}
}
}
@Override
public void visit(DerivedColumn obj) {
this.currentAlias = buildAlias(obj.getAlias());
visitNode(obj.getExpression());
Column column = (Column) this.onGoingExpression.pop();
String CF = column.getProperty(AccumuloMetadataProcessor.CF, false);
String CQ = column.getProperty(AccumuloMetadataProcessor.CQ, false);
if (CQ != null) {
this.keybasedColumnMap.put(CF + "/" + CQ, column); // $NON-NLS-1$
} else {
this.keybasedColumnMap.put(CF, column);
}
// no expressions in select are allowed.
this.selectColumns.add(column);
}