org.apache.calcite.adapter.file

Class FileTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.java.AbstractQueryableTable

org.apache.calcite.adapter.file.FileTable

All Implemented Interfaces:

QueryableTable, Table, TranslatableTable, Wrapper

class FileTable
extends AbstractQueryableTable
implements TranslatableTable

Table implementation wrapping a URL / HTML table.

Field Summary

Fields

Modifier and Type	Field and Description
private FileRowConverter	converter
private RelProtoDataType	protoRowType
private FileReader	reader

Fields inherited from class org.apache.calcite.adapter.java.AbstractQueryableTable

elementType

Constructor Summary

Constructors

Modifier	Constructor and Description
private	FileTable(Source source, String selector, Integer index, RelProtoDataType protoRowType, List<Map<String,Object>> fieldConfigs) Creates a FileTable.

Method Summary

Modifier and Type	Method and Description
<T> Queryable<T>	asQueryable(QueryProvider queryProvider, SchemaPlus schema, String tableName)
(package private) static FileTable	create(Source source, Map<String,Object> tableDef) Creates a FileTable.
RelDataType	getRowType(RelDataTypeFactory typeFactory)
Statistic	getStatistic()
Enumerable<Object>	project(int[] fields) Returns an enumerable over a given projection of the fields.
RelNode	toRel(RelOptTable.ToRelContext context, RelOptTable relOptTable)
String	toString()

Methods inherited from class org.apache.calcite.adapter.java.AbstractQueryableTable

getElementType, getExpression

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

getJdbcTableType, 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, isRolledUp, rolledUpColumnValidInsideAgg

Field Detail

protoRowType

private final RelProtoDataType protoRowType

reader

private FileReader reader

converter

private FileRowConverter converter

Constructor Detail

FileTable

private FileTable(Source source,
                  String selector,
                  Integer index,
                  RelProtoDataType protoRowType,
                  List<Map<String,Object>> fieldConfigs)
           throws Exception

Creates a FileTable.

Throws:

Exception

Method Detail

create

static FileTable create(Source source,
                        Map<String,Object> tableDef)
                 throws Exception

Creates a FileTable.

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object

getStatistic

public Statistic getStatistic()

Specified by:

getStatistic in interface Table

Overrides:

getStatistic in class AbstractTable

getRowType

public RelDataType getRowType(RelDataTypeFactory typeFactory)

Specified by:

getRowType in interface Table

asQueryable

public <T> Queryable<T> asQueryable(QueryProvider queryProvider,
                                    SchemaPlus schema,
                                    String tableName)

Specified by:

asQueryable in interface QueryableTable

project

public Enumerable<Object> project(int[] fields)

Returns an enumerable over a given projection of the fields.

toRel

public RelNode toRel(RelOptTable.ToRelContext context,
                     RelOptTable relOptTable)

Specified by:

toRel in interface TranslatableTable