org.mmbase.bridge.util
Class GrowingTreeList

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractList
          java.util.AbstractSequentialList
              org.mmbase.bridge.util.AbstractSequentialBridgeList
                  org.mmbase.bridge.util.TreeList
                      org.mmbase.bridge.util.GrowingTreeList

All Implemented Interfaces:

BridgeList, java.util.Collection, java.util.List, NodeList

public class GrowingTreeList

extends TreeList

Queries a Tree from MMBase. A Tree is presented as a List of MultiLevel results (ClusterNodes), combined with a smart iterator which iterates through the elements these lists as if it was one list ordered as a Tree.

Since:

MMBase-1.7

Version:

$Id: GrowingTreeList.java,v 1.2.2.3 2004/07/29 17:19:42 michiel Exp $

Author:

Michiel Meeuwissen

Nested Class Summary

Nested classes inherited from class org.mmbase.bridge.util.TreeList

TreeList.TreeItr

Field Summary

protected Constraint	cleanConstraint
protected int	maxNumberOfSteps
protected NodeQuery	pathElementTemplate

Fields inherited from class org.mmbase.bridge.util.TreeList

cloud, foundEnd, numberOfSteps, queries, REAL_NODES, results, topQuery

Fields inherited from class java.util.AbstractList

modCount

Fields inherited from interface org.mmbase.bridge.NodeList

QUERY_PROPERTY

Constructor Summary

GrowingTreeList(NodeQuery q, int maxDepth)

GrowingTreeList(NodeQuery q, int maxDepth, NodeManager nodeManager, java.lang.String role, java.lang.String searchDir)

Method Summary

protected void	addPathElement()
protected NodeList	getList(int queryNumber) Executes one query if that did not happen yet, and stores the result in the 'results' List
Query	getTemplate() Returns the Query which is used as a template to 'grow' the query.
static void	main(java.lang.String[] args)
void	setMaxDepth(int maxDepth) As long as the tree is not 'started' yet, max depth can still be changed.
int	size()

Methods inherited from class org.mmbase.bridge.util.TreeList

doTest, getNode, getQuery, getRealNode, grow, listIterator, nodeIterator, sizeCheck, subNodeList, toString, treeIterator

Methods inherited from class org.mmbase.bridge.util.AbstractSequentialBridgeList

getProperty, setProperty, sort, sort

Methods inherited from class java.util.AbstractSequentialList

add, addAll, get, iterator, remove, set

Methods inherited from class java.util.AbstractList

add, clear, equals, hashCode, indexOf, lastIndexOf, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.mmbase.bridge.BridgeList

getProperty, setProperty, sort, sort

Methods inherited from interface java.util.List

add, add, addAll, addAll, clear, contains, containsAll, equals, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, remove, remove, removeAll, retainAll, set, subList, toArray, toArray

Field Detail

cleanConstraint

protected Constraint cleanConstraint

pathElementTemplate

protected NodeQuery pathElementTemplate

maxNumberOfSteps

protected int maxNumberOfSteps

Constructor Detail

GrowingTreeList

public GrowingTreeList(NodeQuery q,
                       int maxDepth,
                       NodeManager nodeManager,
                       java.lang.String role,
                       java.lang.String searchDir)

Parameters:

q - The 'base' query defining the minimal depth of the tree elements

maxDepth - You must supply a maximal depth of the nodes, because MMBase is basicly a network rather then a tree, so tree representations could be infinitely deep.

role -

searchDir -

Since:

MMBase-1.7.1

GrowingTreeList

public GrowingTreeList(NodeQuery q,
                       int maxDepth)

Method Detail

setMaxDepth

public void setMaxDepth(int maxDepth)

As long as the tree is not 'started' yet, max depth can still be changed.

Since:

MMBase-1.7.1

getTemplate

public Query getTemplate()

Returns the Query which is used as a template to 'grow' the query. You can change it, add sort-orders and add constraints before the tree is 'started'. All but the first step of this query are added. This query itself is never used.

Since:

MMBase-1.7.1

size

public int size()

Specified by:

size in interface java.util.List

Overrides:

size in class TreeList

getList

protected NodeList getList(int queryNumber)

Description copied from class: TreeList

Executes one query if that did not happen yet, and stores the result in the 'results' List

Overrides:

getList in class TreeList

Returns:

NodeList or null if queryNumber too big

addPathElement

protected void addPathElement()

main

public static void main(java.lang.String[] args)