com.espertech.esper.view.std

Class GroupByViewUtil

java.lang.Object

com.espertech.esper.view.std.GroupByViewUtil

public class GroupByViewUtil
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
GroupByViewUtil()

Method Summary

Modifier and Type	Method and Description
static View	makeSubView(GroupByView groupView, java.lang.Object groupByValues, AgentInstanceViewFactoryChainContext agentInstanceContext) Instantiate subviews for the given group view and the given key value to group-by.

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupByViewUtil

public GroupByViewUtil()

Method Detail

makeSubView

public static View makeSubView(GroupByView groupView,
                               java.lang.Object groupByValues,
                               AgentInstanceViewFactoryChainContext agentInstanceContext)

Instantiate subviews for the given group view and the given key value to group-by. Makes shallow copies of each child view and its subviews up to the merge point. Sets up merge data views for merging the group-by key value back in.

Parameters:

groupView - is the parent view for which to copy subviews for

groupByValues - is the key values to group-by

agentInstanceContext - is the view services that sub-views may need

Returns:

a single view or a list of views that are copies of the original list, with copied children, with data merge views added to the copied child leaf views.