com.redhat.rhn.frontend.filter

Class TreeFilter

java.lang.Object

com.redhat.rhn.frontend.filter.TreeFilter

All Implemented Interfaces:

ResultsFilter

public class TreeFilter
extends java.lang.Object
implements ResultsFilter

TreeFilter

Constructor Summary

Constructors

Constructor and Description
TreeFilter()

Method Summary

Modifier and Type	Method and Description
void	filterData(DataResult dr, java.lang.String filterData, java.lang.String filterColumn) There are some preconditions We expect each element of DataResult to implement "DepthAware".
protected void	handleOrphans(DataResult result) Handle the unavailable channels/systems by adding fake nodes.
void	setMatcher(Matcher m) Set a matcher to match individual elements.

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeFilter

public TreeFilter()

Method Detail

setMatcher

public void setMatcher(Matcher m)

Set a matcher to match individual elements. This facility was added so that we could evaluate things like if a given DTO had a condition x match on column X, else match on column Y.

Parameters:

m - the matcher that evaluates individual elements.

filterData

public void filterData(DataResult dr,
                       java.lang.String filterData,
                       java.lang.String filterColumn)

There are some preconditions We expect each element of DataResult to implement "DepthAware". The depth value has to be >=0 with 0 being the root depth. We need this keep track of the parents. Another assumption is that the list is ordered depthwise For example A data result with - {(C1,0), (C2,1), (C3,2), (C4,1), (C5,2), (D1,0), (D2,1), (D3,1), (E1,0), (E2,1), (E3,1) } will resemble the following tree ( Note - In our notation (X,Y), the X = content while Y = depth, while 2nd is a unique id) C1 D1 E1 / \ / \ / \ C2 C4 D2 D3 E2 E3 / \ C3 C5

Specified by:

filterData in interface ResultsFilter

Parameters:

dr - DataResult to be filtered

filterData - String to filter the DataResult with

filterColumn - column to filter on

handleOrphans

protected void handleOrphans(DataResult result)

Handle the unavailable channels/systems by adding fake nodes.

Parameters:

result - list of nodes to solve