Eu mencionei abaixo 4 arquivos xml nos quais eu tenho state & key & BuildDate. Eu preciso representar as informações de "estado" da "chave" em um gráfico baseado no BuildDate.

O eixo x deve ter passado 6 dias (com a data atual. Suponha que hoje seja 7 de setembro, a entrada deve ser de 1 a 6 de setembro). Se houver uma entrada para a data correspondente no campo BuildDate, o estado deverá ser exibido em vermelho ou verde (Falha - vermelho, Sucesso - verde). Caso contrário, o preto deve ser exibido.

Estou lutando principalmente para agregar valor e exibir de acordo com a data.

Como posso fazer isso via jfreechart? (StackedBarChart?)

        inupt_1.xml:

        <?xml version="1.0" encoding="UTF-8"?>
        <results>
        <result id="1" number="10" lifeCycleState="Finished" state="Failed" key="PLAN-A" BuildDate="2014 Sept 1">
        </result>
        <result id="2" number="20" lifeCycleState="Finished" state="Success" key="PLAN-A" BuildDate="2014 Sept 2">
        </result>
        <result id="3" number="30" lifeCycleState="Finished" state="Failed" key="PLAN-A" BuildDate="2014 Sept 3">
        </result>
        <result id="4" number="40" lifeCycleState="Finished" state="Success" key="PLAN-A" BuildDate="2014 Sept 4">
        </result>
        <result id="5" number="50" lifeCycleState="Finished" state="Failed" key="PLAN-A" BuildDate="2014 Sept 5">
        </result>
        <result id="6" number="60" lifeCycleState="Finished" state="Failed" key="PLAN-A" BuildDate="2014 Sept 7">
        </result>
        </results>


       inupt_2.xml:

        <?xml version="1.0" encoding="UTF-8"?>
        <results>
        <result id="1" number="10" lifeCycleState="Finished" state="Success" key="PLAN-B" BuildDate="2014 Sept 1">
        </result>
        <result id="2" number="20" lifeCycleState="Finished" state="Failed" key="PLAN-B" BuildDate="2014 Sept 2">
        </result>
        <result id="3" number="30" lifeCycleState="Finished" state="Success" key="PLAN-B" BuildDate="2014 Sept 4">
        </result>
        <result id="4" number="40" lifeCycleState="Finished" state="Success" key="PLAN-B" BuildDate="2014 Sept 5">
        </result>
        <result id="5" number="50" lifeCycleState="Finished" state="Failed" key="PLAN-B" BuildDate="2014 Sept 6">
        </result>
        <result id="6" number="60" lifeCycleState="Finished" state="Failed" key="PLAN-B" BuildDate="2014 Sept 7">
        </result>
        </results>


        inupt_3.xml:

        <?xml version="1.0" encoding="UTF-8"?>
        <results>
        <result id="1" number="10" lifeCycleState="Finished" state="Failed" key="PLAN-C" BuildDate="2014 Sept 1">
        </result>
        <result id="2" number="20" lifeCycleState="Finished" state="Success" key="PLAN-C" BuildDate="2014 Sept 3">
        </result>
        <result id="3" number="30" lifeCycleState="Finished" state="Failed" key="PLAN-C" BuildDate="2014 Sept 4">
        </result>
        <result id="4" number="40" lifeCycleState="Finished" state="Success" key="PLAN-C" BuildDate="2014 Sept 5">
        </result>
        <result id="5" number="50" lifeCycleState="Finished" state="Success" key="PLAN-C" BuildDate="2014 Sept 6">
        </result>
        <result id="6" number="60" lifeCycleState="Finished" state="Failed" key="PLAN-C" BuildDate="2014 Sept 7">
        </result>
        </results>

        inupt_4.xml:

        <?xml version="1.0" encoding="UTF-8"?>
        <results>
        <result id="1" number="10" lifeCycleState="Finished" state="Failed" key="PLAN-D" BuildDate="2014 Sept 1">
        </result>
        <result id="2" number="20" lifeCycleState="Finished" state="Success" key="PLAN-D" BuildDate="2014 Sept 2">
        </result>
        <result id="3" number="30" lifeCycleState="Finished" state="Success" key="PLAN-D" BuildDate="2014 Sept 4">
        </result>
        <result id="4" number="40" lifeCycleState="Finished" state="Success" key="PLAN-D" BuildDate="2014 Sept 5">
        </result>
        <result id="6" number="60" lifeCycleState="Finished" state="Failed" key="PLAN-D" BuildDate="2014 Sept 7">
        </result>
        </results>

Gráfico: