org.apache.flink.table.client.gateway.local

Class ExecutionContext<T>

java.lang.Object

org.apache.flink.table.client.gateway.local.ExecutionContext<T>

Type Parameters:

T - cluster id

public class ExecutionContext<T>
extends Object

Context for executing table programs. This class caches everything that can be cached across multiple queries as long as the session context does not change. This must be thread-safe as it might be reused across different query submissions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	ExecutionContext.EnvironmentInstance ExecutionEnvironment and StreamExecutionEnvironment cannot be reused across multiple queries because they are stateful.

Constructor Summary

Constructors

Constructor and Description
ExecutionContext(Environment defaultEnvironment, SessionContext sessionContext, List<URL> dependencies, Configuration flinkConfig, org.apache.commons.cli.Options commandLineOptions, List<CustomCommandLine<?>> availableCommandLines)

Method Summary

Modifier and Type	Method and Description
ClusterDescriptor<T>	createClusterDescriptor()
ExecutionContext.EnvironmentInstance	createEnvironmentInstance()
ClassLoader	getClassLoader()
T	getClusterId()
ClusterSpecification	getClusterSpec()
Environment	getMergedEnvironment()
SessionContext	getSessionContext()
Map<String,TableSink<?>>	getTableSinks()
Map<String,TableSource<?>>	getTableSources()
<R> R	wrapClassLoader(java.util.function.Supplier<R> supplier) Executes the given supplier using the execution context's classloader as thread classloader.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExecutionContext

public ExecutionContext(Environment defaultEnvironment,
                        SessionContext sessionContext,
                        List<URL> dependencies,
                        Configuration flinkConfig,
                        org.apache.commons.cli.Options commandLineOptions,
                        List<CustomCommandLine<?>> availableCommandLines)

Method Detail

getSessionContext

public SessionContext getSessionContext()

getClassLoader

public ClassLoader getClassLoader()

getMergedEnvironment

public Environment getMergedEnvironment()

getClusterSpec

public ClusterSpecification getClusterSpec()

getClusterId

public T getClusterId()

createClusterDescriptor

public ClusterDescriptor<T> createClusterDescriptor()
                                             throws Exception

Throws:

Exception

createEnvironmentInstance

public ExecutionContext.EnvironmentInstance createEnvironmentInstance()

getTableSources

public Map<String,TableSource<?>> getTableSources()

getTableSinks

public Map<String,TableSink<?>> getTableSinks()

wrapClassLoader

public <R> R wrapClassLoader(java.util.function.Supplier<R> supplier)

Executes the given supplier using the execution context's classloader as thread classloader.