org.apache.calcite.rel

Interface RelInput

public interface RelInput

Context from which a relational expression can initialize itself, reading from a serialized form of the relational expression.

Method Summary

Modifier and Type	Method and Description
@Nullable Object	get(String tag)
List<AggregateCall>	getAggregateCalls(String tag)
ImmutableBitSet	getBitSet(String tag)
@Nullable List<ImmutableBitSet>	getBitSetList(String tag)
boolean	getBoolean(String tag, boolean default_)
RelOptCluster	getCluster()
RelCollation	getCollation()
RelDistribution	getDistribution()
<E extends Enum<E>> E	getEnum(String tag, Class<E> enumClass) Returns an enum value.
@Nullable RexNode	getExpression(String tag) Returns an expression.
@Nullable List<RexNode>	getExpressionList(String tag)
float	getFloat(String tag) Returns a float value.
RelNode	getInput() Returns the input relational expression.
List<RelNode>	getInputs()
@Nullable List<Integer>	getIntegerList(String tag)
@Nullable List<List<Integer>>	getIntegerListList(String tag)
RelDataType	getRowType(String tag)
RelDataType	getRowType(String expressionsTag, String fieldsTag)
@Nullable String	getString(String tag) Returns a string value.
@Nullable List<String>	getStringList(String tag)
RelOptTable	getTable(String table)
RelTraitSet	getTraitSet()
com.google.common.collect.ImmutableList<com.google.common.collect.ImmutableList<RexLiteral>>	getTuples(String tag)

Method Detail

getCluster

RelOptCluster getCluster()

getTraitSet

RelTraitSet getTraitSet()

getTable

RelOptTable getTable(String table)

getInput

RelNode getInput()

Returns the input relational expression. Throws if there is not precisely one input.

getInputs

List<RelNode> getInputs()

getExpression

@Nullable RexNode getExpression(String tag)

Returns an expression.

getBitSet

ImmutableBitSet getBitSet(String tag)

getBitSetList

@Nullable List<ImmutableBitSet> getBitSetList(String tag)

getAggregateCalls

List<AggregateCall> getAggregateCalls(String tag)

get

@Nullable Object get(String tag)

getString

@Nullable String getString(String tag)

Returns a string value. Throws if wrong type.

getFloat

float getFloat(String tag)

Returns a float value. Throws if not present or wrong type.

getEnum

<E extends Enum<E>> E getEnum(String tag,
                              Class<E> enumClass)

Returns an enum value. Throws if not a valid member.

getExpressionList

@Nullable List<RexNode> getExpressionList(String tag)

getStringList

@Nullable List<String> getStringList(String tag)

getIntegerList

@Nullable List<Integer> getIntegerList(String tag)

getIntegerListList

@Nullable List<List<Integer>> getIntegerListList(String tag)

getRowType

RelDataType getRowType(String tag)

getRowType

RelDataType getRowType(String expressionsTag,
                       String fieldsTag)

getCollation

RelCollation getCollation()

getDistribution

RelDistribution getDistribution()

getTuples

com.google.common.collect.ImmutableList<com.google.common.collect.ImmutableList<RexLiteral>> getTuples(String tag)

getBoolean

boolean getBoolean(String tag,
                   boolean default_)