org.apache.calcite.linq4j.tree

Class FunctionExpression<F extends Function<?>>

java.lang.Object

org.apache.calcite.linq4j.tree.AbstractNode

org.apache.calcite.linq4j.tree.Expression

org.apache.calcite.linq4j.tree.LambdaExpression

org.apache.calcite.linq4j.tree.FunctionExpression<F>

Type Parameters:

F - Function type

All Implemented Interfaces:

Node

public final class FunctionExpression<F extends Function<?>>
extends LambdaExpression

Represents a strongly typed lambda expression as a data structure in the form of an expression tree. This class cannot be inherited.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FunctionExpression.Invokable Function that can be invoked with a variable number of arguments.

Field Summary

Fields

Modifier and Type	Field and Description
BlockStatement	body
private F	dynamicFunction
F	function
private int	hash Cache the hash code for the expression
List<ParameterExpression>	parameterList

Fields inherited from class org.apache.calcite.linq4j.tree.AbstractNode

nodeType, type

Constructor Summary

Constructors

Modifier	Constructor and Description
	FunctionExpression(Class<F> type, BlockStatement body, List<ParameterExpression> parameters)
private	FunctionExpression(Class<F> type, F function, BlockStatement body, List<ParameterExpression> parameterList)
	FunctionExpression(F function)

Method Summary

Modifier and Type	Method and Description
(package private) void	accept(ExpressionWriter writer, int lprec, int rprec)
Expression	accept(Shuttle shuttle)
<R> R	accept(Visitor<R> visitor)
FunctionExpression.Invokable	compile()
boolean	equals(Object o)
private Method	getAbstractMethod()
private String	getAbstractMethodName()
F	getFunction()
int	hashCode()
private boolean	isAbstractMethodPrimitive()

Methods inherited from class org.apache.calcite.linq4j.tree.Expression

canReduce

Methods inherited from class org.apache.calcite.linq4j.tree.AbstractNode

accept, accept0, evaluate, getNodeType, getType, toString

Methods inherited from class java.lang.Object

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

Field Detail

function

public final F extends Function<?> function

body

public final BlockStatement body

parameterList

public final List<ParameterExpression> parameterList

dynamicFunction

private F extends Function<?> dynamicFunction

hash

private int hash

Cache the hash code for the expression

Constructor Detail

FunctionExpression

private FunctionExpression(Class<F> type,
                           F function,
                           BlockStatement body,
                           List<ParameterExpression> parameterList)

FunctionExpression

public FunctionExpression(F function)

FunctionExpression

public FunctionExpression(Class<F> type,
                          BlockStatement body,
                          List<ParameterExpression> parameters)

Method Detail

accept

public Expression accept(Shuttle shuttle)

Specified by:

accept in interface Node

Overrides:

accept in class LambdaExpression

accept

public <R> R accept(Visitor<R> visitor)

Specified by:

accept in interface Node

Overrides:

accept in class LambdaExpression

compile

public FunctionExpression.Invokable compile()

getFunction

public F getFunction()

accept

void accept(ExpressionWriter writer,
            int lprec,
            int rprec)

Overrides:

accept in class AbstractNode

isAbstractMethodPrimitive

private boolean isAbstractMethodPrimitive()

getAbstractMethodName

private String getAbstractMethodName()

getAbstractMethod

private Method getAbstractMethod()

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractNode

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractNode