org.apache.storm.sql

Class AbstractStreamsProcessor

java.lang.Object

org.apache.storm.sql.AbstractStreamsProcessor

public abstract class AbstractStreamsProcessor
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected List<CompilingClassLoader>	classLoaders
protected org.apache.calcite.DataContext	dataContext
protected Stream<Values>	outputStream

Constructor Summary

Constructors

Constructor and Description
AbstractStreamsProcessor()

Method Summary

Modifier and Type	Method and Description
abstract StormTopology	build() Construct the Storm topology based on the SQL.
List<CompilingClassLoader>	getClassLoaders() Return the list of Classloaders which need to be compiled and included to the jar.
org.apache.calcite.DataContext	getDataContext() Return DataContext instance which is used with execution of query.
Stream<Values>	outputStream() Return final output stream of SQL topology structure.

Methods inherited from class java.lang.Object

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

Field Detail

outputStream

protected Stream<Values> outputStream

dataContext

protected org.apache.calcite.DataContext dataContext

classLoaders

protected List<CompilingClassLoader> classLoaders

Constructor Detail

AbstractStreamsProcessor

public AbstractStreamsProcessor()

Method Detail

outputStream

public Stream<Values> outputStream()

Return final output stream of SQL topology structure.

Returns:

the output stream of the SQL

build

public abstract StormTopology build()

Construct the Storm topology based on the SQL.

getDataContext

public org.apache.calcite.DataContext getDataContext()

Return DataContext instance which is used with execution of query.

Returns:

DataContext instance which is used with execution of query

getClassLoaders

public List<CompilingClassLoader> getClassLoaders()

Return the list of Classloaders which need to be compiled and included to the jar. They’re all chaining so the last classloader can access all classes.

Returns:

Classloaders to compile.