Package 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, Wrapper

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	Description
static class	MaterializedViewTable.MaterializedViewTableMacro	Table function that returns the table that materializes a view.

Field Summary

Fields

Modifier and Type	Field	Description
static final 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	Description
MaterializedViewTable(Type elementType, RelProtoDataType relDataType, String viewSql, List<String> viewSchemaPath, @Nullable List<String> viewPath, MaterializationKey key)

Method Summary

Modifier and Type	Method	Description
static MaterializedViewTable.MaterializedViewTableMacro	create(CalciteSchema schema, String viewSql, @Nullable List<String> viewSchemaPath, List<String> viewPath, @Nullable String suggestedTableName, boolean existing)	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, getViewPath, getViewSql, viewMacro, viewMacro, viewMacro

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

getElementType, getExpression

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

getStatistic, 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

getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

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

maybeUnwrap, unwrapOrThrow

Field Details

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 Details

MaterializedViewTable

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

Method Details

create

public static MaterializedViewTable.MaterializedViewTableMacro create(CalciteSchema schema,
 String viewSql,
 @Nullable List<String> viewSchemaPath,
 List<String> viewPath,
 @Nullable String suggestedTableName,
 boolean existing)

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