org.apache.calcite.adapter.java

Class ReflectiveSchema.ReflectiveTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.java.AbstractQueryableTable

org.apache.calcite.adapter.java.ReflectiveSchema.ReflectiveTable

All Implemented Interfaces:

QueryableTable, ScannableTable, Table, Wrapper

Direct Known Subclasses:

ReflectiveSchema.FieldTable

Enclosing class:

ReflectiveSchema

private static class ReflectiveSchema.ReflectiveTable
extends AbstractQueryableTable
implements Table, ScannableTable

Table that is implemented by reading from a Java object.

Field Summary

Fields

Modifier and Type	Field and Description
private Type	elementType
private Enumerable	enumerable

Constructor Summary

Constructors

Constructor and Description
ReflectiveTable(Type elementType, Enumerable enumerable)

Method Summary

Modifier and Type	Method and Description
<T> Queryable<T>	asQueryable(QueryProvider queryProvider, SchemaPlus schema, String tableName) Converts this table into a Queryable.
RelDataType	getRowType(RelDataTypeFactory typeFactory) Returns this table's row type.
Statistic	getStatistic() Returns a provider of statistics about this table.
Enumerable<Object[]>	scan(DataContext root) Returns an enumerator over the rows in this Table.

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, toString, wait, wait, wait

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

getJdbcTableType, isRolledUp, rolledUpColumnValidInsideAgg

Field Detail

elementType

private final Type elementType

enumerable

private final Enumerable enumerable

Constructor Detail

ReflectiveTable

ReflectiveTable(Type elementType,
                Enumerable enumerable)

Method Detail

getRowType

public RelDataType getRowType(RelDataTypeFactory typeFactory)

Description copied from interface: Table

Returns this table's row type.

This is a struct type whose fields describe the names and types of the columns in this table.

The implementer must use the type factory provided. This ensures that the type is converted into a canonical form; other equal types in the same query will use the same object.

Specified by:

getRowType in interface Table

Parameters:

typeFactory - Type factory with which to create the type

Returns:

Row type

getStatistic

public Statistic getStatistic()

Description copied from interface: Table

Returns a provider of statistics about this table.

Specified by:

getStatistic in interface Table

Overrides:

getStatistic in class AbstractTable

scan

public Enumerable<Object[]> scan(DataContext root)

Description copied from interface: ScannableTable

Returns an enumerator over the rows in this Table. Each row is represented as an array of its column values.

Specified by:

scan in interface ScannableTable

asQueryable

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

Description copied from interface: QueryableTable

Converts this table into a Queryable.

Specified by:

asQueryable in interface QueryableTable