org.apache.calcite.adapter.enumerable

Class EnumUtils

java.lang.Object

org.apache.calcite.adapter.enumerable.EnumUtils

public class EnumUtils
extends Object

Utilities for generating programs in the Enumerable (functional) style.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static boolean	BRIDGE_METHODS
static List<String>	LEFT_RIGHT
(package private) static List<Expression>	NO_EXPRS
(package private) static List<ParameterExpression>	NO_PARAMS
private static com.google.common.base.Function<RexNode,Type>	REX_TO_INTERNAL_TYPE

Constructor Summary

Constructors

Modifier	Constructor and Description
private	EnumUtils()

Method Summary

Modifier and Type	Method and Description
(package private) static Expression	enforce(Type storageType, Expression e)
(package private) static List<RelDataType>	fieldRowTypes(RelDataType inputRowType, List<? extends RexNode> extraInputs, List<Integer> argList)
(package private) static List<Type>	fieldTypes(JavaTypeFactory typeFactory, List<? extends RelDataType> inputTypes)
(package private) static List<Expression>	fromInternal(Class<?>[] targetTypes, List<Expression> expressions)
(package private) static Expression	fromInternal(Expression e, Class<?> targetType) Converts from internal representation to JDBC representation used by arguments of user-defined functions.
(package private) static Type	fromInternal(Type type)
(package private) static List<Type>	internalTypes(List<? extends RexNode> operandList)
(package private) static Type	javaClass(JavaTypeFactory typeFactory, RelDataType type)
(package private) static Class	javaRowClass(JavaTypeFactory typeFactory, RelDataType type)
(package private) static Expression	joinSelector(JoinRelType joinType, PhysType physType, List<PhysType> inputPhysTypes)
static MethodDeclaration	overridingMethodDecl(Method method, Iterable<ParameterExpression> parameters, BlockStatement body) Declares a method that overrides another method.
(package private) static Type	toInternal(RelDataType type)

Methods inherited from class java.lang.Object

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

Field Detail

REX_TO_INTERNAL_TYPE

private static final com.google.common.base.Function<RexNode,Type> REX_TO_INTERNAL_TYPE

BRIDGE_METHODS

static final boolean BRIDGE_METHODS

See Also:

Constant Field Values

NO_PARAMS

static final List<ParameterExpression> NO_PARAMS

NO_EXPRS

static final List<Expression> NO_EXPRS

LEFT_RIGHT

public static final List<String> LEFT_RIGHT

Constructor Detail

EnumUtils

private EnumUtils()

Method Detail

overridingMethodDecl

public static MethodDeclaration overridingMethodDecl(Method method,
                                                     Iterable<ParameterExpression> parameters,
                                                     BlockStatement body)

Declares a method that overrides another method.

javaClass

static Type javaClass(JavaTypeFactory typeFactory,
                      RelDataType type)

javaRowClass

static Class javaRowClass(JavaTypeFactory typeFactory,
                          RelDataType type)

fieldTypes

static List<Type> fieldTypes(JavaTypeFactory typeFactory,
                             List<? extends RelDataType> inputTypes)

fieldRowTypes

static List<RelDataType> fieldRowTypes(RelDataType inputRowType,
                                       List<? extends RexNode> extraInputs,
                                       List<Integer> argList)

joinSelector

static Expression joinSelector(JoinRelType joinType,
                               PhysType physType,
                               List<PhysType> inputPhysTypes)

fromInternal

static Expression fromInternal(Expression e,
                               Class<?> targetType)

Converts from internal representation to JDBC representation used by arguments of user-defined functions. For example, converts date values from int to Date.

fromInternal

static List<Expression> fromInternal(Class<?>[] targetTypes,
                                     List<Expression> expressions)

fromInternal

static Type fromInternal(Type type)

toInternal

static Type toInternal(RelDataType type)

internalTypes

static List<Type> internalTypes(List<? extends RexNode> operandList)

enforce

static Expression enforce(Type storageType,
                          Expression e)