org.apache.calcite.schema.impl

Class MaterializedViewTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.java.AbstractQueryableTable

org.apache.calcite.schema.impl.ViewTable

org.apache.calcite.schema.impl.MaterializedViewTable

All Implemented Interfaces:

QueryableTable, Table, TranslatableTable

public class MaterializedViewTable
extends ViewTable

Table that is a materialized view.

It can exist in two states: materialized and not materialized. Over time, a given materialized view may switch states. How it is expanded depends upon its current state. State is managed by MaterializationService.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MaterializedViewTable.MaterializedViewTableMacro Table function that returns the table that materializes a view.

Field Summary

Fields

Modifier and Type	Field and Description
static CalciteConnection	MATERIALIZATION_CONNECTION Internal connection, used to execute queries to materialize views.

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

elementType

Constructor Summary

Constructors

Constructor and Description
MaterializedViewTable(Type elementType, RelProtoDataType relDataType, String viewSql, List<String> viewSchemaPath, MaterializationKey key)

Method Summary

Methods

Modifier and Type	Method and Description
static MaterializedViewTable.MaterializedViewTableMacro	create(CalciteSchema schema, String viewSql, List<String> viewSchemaPath, String tableName) Table macro that returns a materialized view.
RelNode	toRel(RelOptTable.ToRelContext context, RelOptTable relOptTable) Converts this table into a relational expression.

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

asQueryable, getJdbcTableType, getRowType, getSchemaPath, getViewSql, viewMacro

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

getElementType, getExpression

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

getStatistic

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

getStatistic

Field Detail

MATERIALIZATION_CONNECTION

public static final CalciteConnection MATERIALIZATION_CONNECTION

Internal connection, used to execute queries to materialize views. To be used only by Calcite internals. And sparingly.

Constructor Detail

MaterializedViewTable

public MaterializedViewTable(Type elementType,
                     RelProtoDataType relDataType,
                     String viewSql,
                     List<String> viewSchemaPath,
                     MaterializationKey key)

Method Detail

create

public static MaterializedViewTable.MaterializedViewTableMacro create(CalciteSchema schema,
                                                      String viewSql,
                                                      List<String> viewSchemaPath,
                                                      String tableName)

Table macro that returns a materialized view.

toRel

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

Description copied from interface: TranslatableTable

Converts this table into a relational expression.

Specified by:

toRel in interface TranslatableTable

Overrides:

toRel in class ViewTable