Package com.espertech.esper.runtime.client

Class EPRuntimeProvider

java.lang.Object

com.espertech.esper.runtime.client.EPRuntimeProvider

public final class EPRuntimeProvider
extends Object

Factory for instances of EPRuntime.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_RUNTIME_URI	For the default runtime instance the URI value is "default".

Constructor Summary

Constructors

Constructor	Description
EPRuntimeProvider()

Method Summary

Modifier and Type	Method	Description
static EPRuntime	getDefaultRuntime()	Returns the runtime for the default URI.
static EPRuntime	getDefaultRuntime(Configuration configuration)	Returns the default runtime.
static EPRuntime	getDefaultRuntime(Configuration configuration, EPRuntimeOptions options)	Returns the default runtime.
static EPRuntime	getExistingRuntime(String uri)	Returns an existing runtime.
static EPRuntime	getRuntime(String uri)	Returns a runtime for a given runtime URI.
static EPRuntime	getRuntime(String uri, Configuration configuration)	Returns a runtime for a given URI.
static EPRuntime	getRuntime(String uri, Configuration configuration, EPRuntimeOptions options)	Returns a runtime for a given URI.
static String[]	getRuntimeURIs()	Returns a list of known URIs.
static boolean	hasRuntime(String uri)	Returns an indicator whether a runtime for the given URI is allocated (true) or is not allocated (false)

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_RUNTIME_URI

public static final String DEFAULT_RUNTIME_URI

For the default runtime instance the URI value is "default".

See Also:

• Constant Field Values

Constructor Details

EPRuntimeProvider

public EPRuntimeProvider()

Method Details

getDefaultRuntime

public static EPRuntime getDefaultRuntime()

Returns the runtime for the default URI. The URI value for the runtime returned is "default".

Returns:

default runtime

getDefaultRuntime

public static EPRuntime getDefaultRuntime(Configuration configuration)
                                   throws ConfigurationException

Returns the default runtime. The URI value for the runtime returned is "default".

Parameters:

configuration - is the configuration for the runtime

Returns:

default instance of the runtime.

Throws:

ConfigurationException - to indicate a configuration problem

getDefaultRuntime

public static EPRuntime getDefaultRuntime(Configuration configuration,
 EPRuntimeOptions options)
                                   throws ConfigurationException

Returns the default runtime. The URI value for the runtime returned is "default".

Parameters:

configuration - is the configuration for the runtime

options - runtime options

Returns:

default instance of the runtime.

Throws:

ConfigurationException - to indicate a configuration problem

getRuntime

public static EPRuntime getRuntime(String uri)

Returns a runtime for a given runtime URI.

Use the URI of "default" or null to return the default runtime.

Parameters:

uri - - the URI

Returns:

runtime for the given URI.

getRuntime

public static EPRuntime getRuntime(String uri,
 Configuration configuration)
                            throws ConfigurationException

Returns a runtime for a given URI. Use the URI of "default" or null to return the default runtime.

Parameters:

uri - - the runtime URI. If null provided it assumes "default".

configuration - is the configuration for the runtime

Returns:

Runtime for the given URI.

Throws:

ConfigurationException - to indicate a configuration problem

getRuntime

public static EPRuntime getRuntime(String uri,
 Configuration configuration,
 EPRuntimeOptions options)
                            throws ConfigurationException

Returns a runtime for a given URI. Use the URI of "default" or null to return the default runtime.

Parameters:

uri - - the runtime URI. If null provided it assumes "default".

configuration - is the configuration for the runtime

options - runtime startup options

Returns:

Runtime for the given URI.

Throws:

ConfigurationException - to indicate a configuration problem

getExistingRuntime

public static EPRuntime getExistingRuntime(String uri)

Returns an existing runtime. Returns null if the runtime for the given URI has not been initialized or the runtime for the given URI is in destroyed state.

Parameters:

uri - - the URI. If null provided it assumes "default".

Returns:

Runtime for the given URI.

getRuntimeURIs

public static String[] getRuntimeURIs()

Returns a list of known URIs.

Returns a the value "default" for the default runtime.

Returns:

array of URI strings

hasRuntime

public static boolean hasRuntime(String uri)

Returns an indicator whether a runtime for the given URI is allocated (true) or is not allocated (false)

Parameters:

uri - runtime uri

Returns:

indicator