org.apache.calcite.interpreter

Class Interpreter

java.lang.Object

org.apache.calcite.linq4j.DefaultEnumerable<T>

org.apache.calcite.linq4j.AbstractEnumerable<Object[]>

org.apache.calcite.interpreter.Interpreter

All Implemented Interfaces:

Iterable<Object[]>, Enumerable<Object[]>, ExtendedEnumerable<Object[]>, ExtendedOrderedEnumerable<Object[]>, OrderedEnumerable<Object[]>, RawEnumerable<Object[]>

public class Interpreter
extends AbstractEnumerable<Object[]>

Interpreter.

Contains the context for interpreting relational expressions. In particular it holds working state while the data flow graph is being assembled.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Interpreter.Compiler Walks over a tree of RelNode and, for each, creates a Node that can be executed in the interpreter.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.calcite.interpreter.Interpreter.ScalarCompiler	scalarCompiler

Constructor Summary

Constructors

Constructor and Description
Interpreter(DataContext dataContext, RelNode rootRel)

Method Summary

Methods

Modifier and Type	Method and Description
Scalar	compile(List<RexNode> nodes, RelDataType inputRowType) Compiles an expression to an executable form.
Context	createContext()
Enumerator<Object[]>	enumerator()
DataContext	getDataContext()
Sink	sink(RelNode rel)
Source	source(RelNode rel, int ordinal)

Methods inherited from class org.apache.calcite.linq4j.AbstractEnumerable

iterator

Methods inherited from class org.apache.calcite.linq4j.DefaultEnumerable

aggregate, aggregate, aggregate, all, any, any, asEnumerable, asOrderedQueryable, asQueryable, average, average, average, average, average, average, average, average, average, average, cast, concat, contains, contains, correlateJoin, count, count, createOrderedEnumerable, defaultIfEmpty, defaultIfEmpty, distinct, distinct, elementAt, elementAtOrDefault, except, except, first, first, firstOrDefault, firstOrDefault, foreach, getThis, getThisOrdered, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupJoin, groupJoin, intersect, intersect, into, join, join, join, last, last, lastOrDefault, lastOrDefault, longCount, longCount, max, max, max, max, max, max, max, max, max, max, max, max, min, min, min, min, min, min, min, min, min, min, min, min, ofType, orderBy, orderBy, orderByDescending, orderByDescending, reverse, select, select, selectMany, selectMany, selectMany, selectMany, sequenceEqual, sequenceEqual, single, single, singleOrDefault, singleOrDefault, skip, skipWhile, skipWhile, sum, sum, sum, sum, sum, sum, sum, sum, sum, sum, take, takeWhile, takeWhile, thenBy, thenBy, thenByDescending, thenByDescending, toList, toLookup, toLookup, toLookup, toLookup, toMap, toMap, toMap, toMap, union, union, where, where, zip

Methods inherited from class java.lang.Object

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

Field Detail

scalarCompiler

protected final org.apache.calcite.interpreter.Interpreter.ScalarCompiler scalarCompiler

Constructor Detail

Interpreter

public Interpreter(DataContext dataContext,
           RelNode rootRel)

Method Detail

enumerator

public Enumerator<Object[]> enumerator()

compile

public Scalar compile(List<RexNode> nodes,
             RelDataType inputRowType)

Compiles an expression to an executable form.

source

public Source source(RelNode rel,
            int ordinal)

sink

public Sink sink(RelNode rel)

createContext

public Context createContext()

getDataContext

public DataContext getDataContext()