Package org.apache.calcite.adapter.enumerable

Class EnumUtils

java.lang.Object

org.apache.calcite.adapter.enumerable.EnumUtils

public class EnumUtils
extends java.lang.Object

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

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static boolean	BRIDGE_METHODS
static java.util.List<java.lang.String>	LEFT_RIGHT
(package private) static java.util.List<Expression>	NO_EXPRS
(package private) static java.util.List<ParameterExpression>	NO_PARAMS

Constructor Summary

Constructors

Modifier	Constructor	Description
private	EnumUtils()

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Detail

BRIDGE_METHODS

static final boolean BRIDGE_METHODS

See Also:

Constant Field Values

NO_PARAMS

static final java.util.List<ParameterExpression> NO_PARAMS

NO_EXPRS

static final java.util.List<Expression> NO_EXPRS

LEFT_RIGHT

public static final java.util.List<java.lang.String> LEFT_RIGHT

Constructor Detail

EnumUtils

private EnumUtils()

Method Detail

overridingMethodDecl

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

Declares a method that overrides another method.

javaClass

static java.lang.reflect.Type javaClass(JavaTypeFactory typeFactory,
                                        RelDataType type)

javaRowClass

static java.lang.Class javaRowClass(JavaTypeFactory typeFactory,
                                    RelDataType type)

fieldTypes

static java.util.List<java.lang.reflect.Type> fieldTypes(JavaTypeFactory typeFactory,
                                                         java.util.List<? extends RelDataType> inputTypes)

fieldRowTypes

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

joinSelector

static Expression joinSelector(SemiJoinType semiJoinType,
                               PhysType physType,
                               java.util.List<PhysType> inputPhysTypes)

joinSelector

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

fromInternal

static Expression fromInternal(Expression e,
                               java.lang.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 java.util.List<Expression> fromInternal(java.lang.Class<?>[] targetTypes,
                                               java.util.List<Expression> expressions)

fromInternal

static java.lang.reflect.Type fromInternal(java.lang.reflect.Type type)

toInternal

static java.lang.reflect.Type toInternal(RelDataType type)

internalTypes

static java.util.List<java.lang.reflect.Type> internalTypes(java.util.List<? extends RexNode> operandList)

enforce

static Expression enforce(java.lang.reflect.Type storageType,
                          Expression e)