org.apache.calcite.rel.type

Class RelCrossType

java.lang.Object

org.apache.calcite.rel.type.RelDataTypeImpl

org.apache.calcite.rel.type.RelCrossType

All Implemented Interfaces:

RelDataType, RelDataTypeFamily

public class RelCrossType
extends RelDataTypeImpl

Type of the cartesian product of two or more sets of records.

Its fields are those of its constituent records, but unlike a RelRecordType, those fields' names are not necessarily distinct.

Field Summary

Fields

Modifier and Type	Field and Description
com.google.common.collect.ImmutableList<RelDataType>	types

Fields inherited from class org.apache.calcite.rel.type.RelDataTypeImpl

digest, fieldList

Fields inherited from interface org.apache.calcite.rel.type.RelDataType

PRECISION_NOT_SPECIFIED, SCALE_NOT_SPECIFIED

Constructor Summary

Constructors

Constructor and Description
RelCrossType(List<RelDataType> types, List<RelDataTypeField> fields) Creates a cartesian product type.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	generateTypeString(StringBuilder sb, boolean withDetail) Generates a string representation of this type.
List<RelDataTypeField>	getFieldList() Gets the fields in a struct type.
boolean	isStruct() Queries whether this is a structured type.

Methods inherited from class org.apache.calcite.rel.type.RelDataTypeImpl

computeDigest, equals, extra, getCharset, getCollation, getComparability, getComponentType, getFamily, getField, getFieldCount, getFieldNames, getFullTypeString, getIntervalQualifier, getKeyType, getPrecedenceList, getPrecision, getScale, getSqlIdentifier, getSqlTypeName, getValueType, hashCode, isNullable, proto, proto, proto, proto, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

types

public final com.google.common.collect.ImmutableList<RelDataType> types

Constructor Detail

RelCrossType

public RelCrossType(List<RelDataType> types,
            List<RelDataTypeField> fields)

Creates a cartesian product type. This should only be called from a factory method.

Method Detail

isStruct

public boolean isStruct()

Description copied from interface: RelDataType

Queries whether this is a structured type.

Specified by:

isStruct in interface RelDataType

Overrides:

isStruct in class RelDataTypeImpl

Returns:

whether this type has fields; examples include rows and user-defined structured types in SQL, and classes in Java

getFieldList

public List<RelDataTypeField> getFieldList()

Description copied from interface: RelDataType

Gets the fields in a struct type. The field count is equal to the size of the returned list.

Specified by:

getFieldList in interface RelDataType

Overrides:

getFieldList in class RelDataTypeImpl

Returns:

read-only list of fields

generateTypeString

protected void generateTypeString(StringBuilder sb,
                      boolean withDetail)

Description copied from class: RelDataTypeImpl

Generates a string representation of this type.

Specified by:

generateTypeString in class RelDataTypeImpl

Parameters:

sb - StringBuffer into which to generate the string

withDetail - when true, all detail information needed to compute a unique digest (and return from getFullTypeString) should be included;