com.espertech.esper.runtime.client

Class EPRuntimeProvider

java.lang.Object

com.espertech.esper.runtime.client.EPRuntimeProvider

public final class EPRuntimeProvider
extends java.lang.Object

Factory for instances of EPRuntime.

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
EPRuntimeProvider()

Method Summary

Modifier and Type	Method and Description
static EPRuntime	getDefaultRuntime() Returns the runtime for the default URI.
static EPRuntime	getDefaultRuntime(Configuration configuration) Returns the default runtime.
static EPRuntime	getExistingRuntime(java.lang.String uri) Returns an existing runtime.
static EPRuntime	getRuntime(java.lang.String uri) Returns a runtime for a given runtime URI.
static EPRuntime	getRuntime(java.lang.String uri, Configuration configuration) Returns a runtime for a given URI.
static java.lang.String[]	getRuntimeURIs() Returns a list of known URIs.
static boolean	hasRuntime(java.lang.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 Detail

DEFAULT_RUNTIME_URI

public static final java.lang.String DEFAULT_RUNTIME_URI

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

See Also:

Constant Field Values

Constructor Detail

EPRuntimeProvider

public EPRuntimeProvider()

Method Detail

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

getRuntime

public static EPRuntime getRuntime(java.lang.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(java.lang.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

getExistingRuntime

public static EPRuntime getExistingRuntime(java.lang.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 java.lang.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(java.lang.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