org.apache.calcite.materialize

Class Lattice.Builder

java.lang.Object

org.apache.calcite.materialize.Lattice.Builder

Enclosing class:

Lattice

public static class Lattice.Builder
extends Object

Lattice builder.

Constructor Summary

Constructors

Constructor and Description
Builder(org.apache.calcite.materialize.LatticeSpace space, CalciteSchema schema, String sql)

Method Summary

Modifier and Type	Method and Description
boolean	addMeasure(Lattice.Measure measure) Adds a measure, if it does not already exist.
void	addTile(Lattice.Tile tile)
Lattice.Builder	algorithm(boolean algorithm) Sets the "algorithm" attribute (default false).
Lattice.Builder	algorithmMaxMillis(long algorithmMaxMillis) Sets the "algorithmMaxMillis" attribute (default -1).
Lattice.Builder	auto(boolean auto) Sets the "auto" attribute (default true).
Lattice	build() Builds a lattice.
Lattice.Column	column(int table, int column)
Lattice.Column	expression(RexNode e, String alias, List<String> tableAliases) Adds a lattice column based on a SQL expression, or returns a column based on the same expression seen previously.
com.google.common.collect.ImmutableList<Lattice.Column>	resolveArgs(@Nullable Object args) Resolves the arguments of a JsonMeasure.
Lattice.Column	resolveColumn(Object name)
Lattice.Measure	resolveMeasure(String aggName, boolean distinct, @Nullable Object args)
Lattice.Builder	rowCountEstimate(double rowCountEstimate) Sets the "rowCountEstimate" attribute (default null).
Lattice.Builder	statisticProvider(@Nullable String statisticProvider) Sets the "statisticProvider" attribute.
void	use(Lattice.Column column, boolean measure) Records a use of a column.

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder(org.apache.calcite.materialize.LatticeSpace space,
               CalciteSchema schema,
               String sql)

Method Detail

auto

public Lattice.Builder auto(boolean auto)

Sets the "auto" attribute (default true).

algorithm

public Lattice.Builder algorithm(boolean algorithm)

Sets the "algorithm" attribute (default false).

algorithmMaxMillis

public Lattice.Builder algorithmMaxMillis(long algorithmMaxMillis)

Sets the "algorithmMaxMillis" attribute (default -1).

rowCountEstimate

public Lattice.Builder rowCountEstimate(double rowCountEstimate)

Sets the "rowCountEstimate" attribute (default null).

statisticProvider

public Lattice.Builder statisticProvider(@Nullable String statisticProvider)

Sets the "statisticProvider" attribute.

If not set, the lattice will use Lattices.CACHED_SQL.

build

public Lattice build()

Builds a lattice.

resolveArgs

public com.google.common.collect.ImmutableList<Lattice.Column> resolveArgs(@Nullable Object args)

Resolves the arguments of a JsonMeasure. They must either be null, a string, or a list of strings. Throws if the structure is invalid, or if any of the columns do not exist in the lattice.

resolveColumn

public Lattice.Column resolveColumn(Object name)

resolveMeasure

public Lattice.Measure resolveMeasure(String aggName,
                                      boolean distinct,
                                      @Nullable Object args)

addMeasure

public boolean addMeasure(Lattice.Measure measure)

Adds a measure, if it does not already exist. Returns false if an identical measure already exists.

addTile

public void addTile(Lattice.Tile tile)

column

public Lattice.Column column(int table,
                             int column)

expression

public Lattice.Column expression(RexNode e,
                                 String alias,
                                 List<String> tableAliases)

Adds a lattice column based on a SQL expression, or returns a column based on the same expression seen previously.

use

public void use(Lattice.Column column,
                boolean measure)

Records a use of a column.

Parameters:

column - Column

measure - Whether this use is as an argument to a measure; e.g. "sum(x + y)" is a measure use of the expression "x + y"; "group by x + y" is not