org.apache.druid.catalog.model.table

Class BaseInputSourceDefn.PartialTableFunction

java.lang.Object

org.apache.druid.catalog.model.table.BaseTableFunction

org.apache.druid.catalog.model.table.BaseInputSourceDefn.PartialTableFunction

All Implemented Interfaces:

TableFunction

Enclosing class:

BaseInputSourceDefn

public class BaseInputSourceDefn.PartialTableFunction
extends BaseTableFunction

The "partial" table function that starts with a catalog external table spec, then uses SQL function arguments to "complete" (i.e. fill in) the missing properties to produce a complete table which is then converted to an external table which Calcite can use.

The set of parameters depends on the input source and on whether or not the catalog spec provides a format.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.druid.catalog.model.table.BaseTableFunction

BaseTableFunction.Parameter

Nested classes/interfaces inherited from interface org.apache.druid.catalog.model.table.TableFunction

TableFunction.ParameterDefn, TableFunction.ParameterType

Constructor Summary

Constructors

Constructor and Description
PartialTableFunction(ResolvedExternalTable table, List<TableFunction.ParameterDefn> params)

Method Summary

Modifier and Type	Method and Description
ExternalTableSpec	apply(String fnName, Map<String,Object> args, List<ColumnSpec> columns, com.fasterxml.jackson.databind.ObjectMapper jsonMapper)

Methods inherited from class org.apache.druid.catalog.model.table.BaseTableFunction

parameters, requireSchema

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PartialTableFunction

public PartialTableFunction(ResolvedExternalTable table,
                            List<TableFunction.ParameterDefn> params)

Method Detail

apply

public ExternalTableSpec apply(String fnName,
                               Map<String,Object> args,
                               List<ColumnSpec> columns,
                               com.fasterxml.jackson.databind.ObjectMapper jsonMapper)