how to form xslt for following output using key?

[vidya ksagar]

Input xml:

<?xml version="1.0" encoding="UTF-8"?>
<Order>
    <OrderLines>
        <OrderLine ChangeInOrderedQty="1">
            <Item ItemID="Item_1"/>
            <Extn ExtnLineNumber="1"/>
            <StatusBreakupForCanceledQty>
                <CanceledFrom OrderReleaseKey="1111" Status="cancel">
                    <Details ShipNode="150"/>
                </CanceledFrom>
            </StatusBreakupForCanceledQty>
        </OrderLine>
    </OrderLines>
    <OrderLines>
        <OrderLine ChangeInOrderedQty="4">
            <Item ItemID="Item_2"/>
            <Extn ExtnLineNumber="2"/>
            <StatusBreakupForCanceledQty>
                <CanceledFrom OrderReleaseKey="1121" Status="cancel">
                    <Details ShipNode="150"/>
                </CanceledFrom>
            </StatusBreakupForCanceledQty>
        </OrderLine>
    </OrderLines>
    <OrderLines>
        <OrderLine ChangeInOrderedQty="6">
            <Item ItemID="Item_3"/>
            <Extn ExtnLineNumber="3"/>
            <StatusBreakupForCanceledQty>
                <CanceledFrom OrderReleaseKey="1111" Status="cancel">
                    <Details ShipNode="150"/>
                </CanceledFrom>
            </StatusBreakupForCanceledQty>
        </OrderLine>
    </OrderLines>
    <OrderLines>
        <OrderLine ChangeInOrderedQty="2">
            <Item ItemID="Item_5"/>
            <Extn ExtnLineNumber="4"/>
            <StatusBreakupForCanceledQty>
                <CanceledFrom OrderReleaseKey="1111" Status="cancel">
                    <Details ShipNode="100"/>
                </CanceledFrom>
            </StatusBreakupForCanceledQty>
        </OrderLine>
        <OrderLines>
            <OrderLine ChangeInOrderedQty="3">
                <Item ItemID="Item_5"/>
                <Extn ExtnLineNumber="5"/>
                <StatusBreakupForCanceledQty>
                    <CanceledFrom OrderReleaseKey="1121" Status="cancel">
                        <Details ShipNode="150"/>
                    </CanceledFrom>
                </StatusBreakupForCanceledQty>
            </OrderLine>
            <OrderLine ChangeInOrderedQty="4">
                <Item ItemID="Item_5"/>
                <Extn ExtnLineNumber="6"/>
                <StatusBreakupForCanceledQty>
                    <CanceledFrom OrderReleaseKey="1121" Status="cancel">
                        <Details ShipNode="100"/>
                    </CanceledFrom>
                </StatusBreakupForCanceledQty>
            </OrderLine>
        </OrderLines>
    </OrderLines>
</Order>

Output xml:
Need to group orderlines based orderReleaseKey and ship node should be 150.

<?xml version="1.0" encoding="UTF-8"?>
<OrderReleaseList>
    <OrderReleaseDetail OrderReleaseKey="1111">
        <OrderLines>
            <OrderLine ChangeInOrderedQty="1">
                <Item ItemID="Item_1" />
                <Extn ExtnLineNumber="1" />
            </OrderLine>
        </OrderLines>
        <OrderLines>
            <OrderLine ChangeInOrderedQty="6">
                <Item ItemID="Item_3" />
                <Extn ExtnLineNumber="3" />
            </OrderLine>
        </OrderLines>
      <OrderReleaseDetail>
   <OrderReleaseDetail OrderReleaseKey="1121">
    <OrderLines>
            <OrderLine ChangeInOrderedQty="3">
                <Item ItemID="Item_5" />
                <Extn ExtnLineNumber="5" />
            </OrderLine>
        </OrderLines>
</OrderReleaseList>

[jkmyoung]

See Muenchian grouping:
http://www.jenitennison.com/xslt/gro...muenchian.html

Your filter on your nodes should be in your key and for-each.