org.apache.calcite.adapter.file

Class CsvTranslatableTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.file.CsvTable

org.apache.calcite.adapter.file.CsvTranslatableTable

All Implemented Interfaces:

org.apache.calcite.schema.QueryableTable, org.apache.calcite.schema.Table, org.apache.calcite.schema.TranslatableTable, org.apache.calcite.schema.Wrapper

public class CsvTranslatableTable
extends CsvTable
implements org.apache.calcite.schema.QueryableTable, org.apache.calcite.schema.TranslatableTable

Table based on a CSV file.

Copied from CsvTranslatableTable in demo CSV adapter, with more advanced features.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.adapter.file.CsvTable

CsvTable.Flavor

Field Summary

Fields inherited from class org.apache.calcite.adapter.file.CsvTable

protoRowType, source

Method Summary

Modifier and Type	Method and Description
<T> org.apache.calcite.linq4j.Queryable<T>	asQueryable(org.apache.calcite.linq4j.QueryProvider queryProvider, org.apache.calcite.schema.SchemaPlus schema, String tableName)
Type	getElementType()
org.apache.calcite.linq4j.tree.Expression	getExpression(org.apache.calcite.schema.SchemaPlus schema, String tableName, Class clazz)
org.apache.calcite.linq4j.Enumerable<Object>	project(org.apache.calcite.DataContext root, int[] fields) Returns an enumerable over a given projection of the fields.
org.apache.calcite.rel.RelNode	toRel(org.apache.calcite.plan.RelOptTable.ToRelContext context, org.apache.calcite.plan.RelOptTable relOptTable)
String	toString()

Methods inherited from class org.apache.calcite.adapter.file.CsvTable

getFieldTypes, getRowType, isStream

Methods inherited from class org.apache.calcite.schema.impl.AbstractTable

getJdbcTableType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg, unwrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.schema.Table

getJdbcTableType, getRowType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

Methods inherited from interface org.apache.calcite.schema.Wrapper

maybeUnwrap, unwrapOrThrow

Method Detail

toString

public String toString()

Overrides:

toString in class Object

project

public org.apache.calcite.linq4j.Enumerable<Object> project(org.apache.calcite.DataContext root,
                                                            int[] fields)

Returns an enumerable over a given projection of the fields.

getExpression

public org.apache.calcite.linq4j.tree.Expression getExpression(org.apache.calcite.schema.SchemaPlus schema,
                                                               String tableName,
                                                               Class clazz)

Specified by:

getExpression in interface org.apache.calcite.schema.QueryableTable

getElementType

public Type getElementType()

Specified by:

getElementType in interface org.apache.calcite.schema.QueryableTable

asQueryable

public <T> org.apache.calcite.linq4j.Queryable<T> asQueryable(org.apache.calcite.linq4j.QueryProvider queryProvider,
                                                              org.apache.calcite.schema.SchemaPlus schema,
                                                              String tableName)

Specified by:

asQueryable in interface org.apache.calcite.schema.QueryableTable

toRel

public org.apache.calcite.rel.RelNode toRel(org.apache.calcite.plan.RelOptTable.ToRelContext context,
                                            org.apache.calcite.plan.RelOptTable relOptTable)

Specified by:

toRel in interface org.apache.calcite.schema.TranslatableTable