com.pervasive.datarush.graphs

Class LogicalGraphFactory

java.lang.Object

com.pervasive.datarush.graphs.LogicalGraphFactory

public final class LogicalGraphFactory
extends Object

Public factory for creating initially empty logical graphs. After obtaining a graph, users define the processing of the graph by adding LogicalOperator's to it.

Method Summary

Modifier and Type	Method and Description
static LogicalGraph	newLogicalGraph() Creates an empty logical graph.
static LogicalGraph	newLogicalGraph(OperatorSettings settings) Creates an empty logical graph with specified OperatorSettings.
static LogicalGraph	newLogicalGraph(OperatorSettings settings, EngineConfig defaultConfig) Creates an empty logical graph with specified OperatorSettings and default EngineConfig.
static LogicalGraph	newLogicalGraph(String name) Creates an empty logical graph with a specified name.

Methods inherited from class java.lang.Object

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

Method Detail

newLogicalGraph

public static LogicalGraph newLogicalGraph()

Creates an empty logical graph. The graph is assigned a default name of "root".

Returns:

a new logical graph ready for defining contained operators

newLogicalGraph

public static LogicalGraph newLogicalGraph(String name)

Creates an empty logical graph with a specified name.

Parameters:

name - name of the graph, not necessarily unique

Returns:

a new logical graph ready for defining contained operators

newLogicalGraph

public static LogicalGraph newLogicalGraph(OperatorSettings settings)

Creates an empty logical graph with specified OperatorSettings. For advanced usage only; clients should generally prefer newLogicalGraph() or newLogicalGraph(String).

Parameters:

settings - the operator settings

Returns:

a new logical graph ready for defining contained operators

See Also:

OperatorSettings

newLogicalGraph

public static LogicalGraph newLogicalGraph(OperatorSettings settings,
                                           EngineConfig defaultConfig)

Creates an empty logical graph with specified OperatorSettings and default EngineConfig. For advanced usage only; clients should generally prefer newLogicalGraph() or newLogicalGraph(String).

Parameters:

settings - the operator settings

defaultConfig - the EngineConfig that will be used when the graph is compiled or run without specifying an overriding EngineConfig

Returns:

a new logical graph ready for defining contained operators

See Also:

OperatorSettings