Hi,
I'm creating a custom adapter by
1. Implementing org.apache.calcite.schema.SchemaFactory
2. Create schema that directly implments org.apache.calcite.schema.Schema
3. Inside the schema, tables that extends
org.apache.calcite.schema.impl.AbstractTable
Inside my schema implemenation, i'm overriding the below methods
import org.apache.calcite.schema.Table;
private Map<String, Table> tableMap;
@Override
protected Map<String, Table> getTableMap() {
if (tableMap == null) {
tableMap = createTableMap();
}
return tableMap;
}
@Override
public Table getTable(String name) {
return new AzStorageTable(this,name);
}
This adapter will be querying set of files stored in a location. And i don't
want to pre-populate all the file paths in the getTableMap() method. Is there a
way to add filepath to this during the query time dynamically ?
Overriding getTable(String name) has no effect because the validation layer
takes the list of table names form tableMap.
Few articles on the internet mention that Apache drill does something similar
with hdfs paths. But I'm unable to understand how Apache Drill is able to
achieve it.
I need help in achieving this. Thanks for the help/suggestions in advance.
Thanks
Arun
