Erro JasperReport + JRDataSource

[dandanfonte]

Tenho um método que gera um relatório pdf utilizando JRDataSource da seguinte maneira.

parte do método que gera o data source

[code] List abstractBeanList = getLigsBean(entrada);

            JRDataSource source = getLigacaoDataSource(abstractBeanList);
            
           //JRBeanCollectionDataSource source = new JRBeanCollectionDataSource(abstractBeanList);


            String filePath2 = filePath.replace(".xls", ".pdf");
            JasperPrint print = JasperFillManager.fillReport(getLigReportFile(),null, source);
            
            JasperExportManager.exportReportToPdfFile(print, filePath2);[/code]

[code] private List getLigsBean(List ligacoes) throws Exception {
List beans = new ArrayList();

    for (int i = 0; i < ligacoes.size(); i++) {
        EntradaAbstrata lig = ligacoes.get(i);

        LigacaoBean bean = new LigacaoBean();
        if (lig.getNumeroDeOrigem() != null) {
            bean.setNumeroDeOrigem(lig.getNumeroDeOrigem().toString());
        } else {
            bean.setNumeroDeOrigem("-");
        }
        if (lig.getDestino() != null && !lig.getDestino().toString().equals("")) {
            bean.setNumeroDeDestino(lig.getDestino().toString());
        } else {
            bean.setNumeroDeDestino("-");
        }

        if (lig.getDataOrigemLigacao() != null) {
            SimpleDateFormat formatador = new SimpleDateFormat("dd/MM/yyyy");
            String f = formatador.format(lig.getDataOrigemLigacao());
            bean.setData(f);

        } else {
            bean.setData("-");
        }
        if (lig.getDataOrigemLigacao() != null) {
            SimpleDateFormat formatador = new SimpleDateFormat("HH:mm");
            String f = formatador.format(lig.getDataOrigemLigacao());
            bean.setHora(f);

        } else {
            bean.setHora("-");
        }
        try {
            if (lig.getDuracaoLigacaoHoras() != null) {
                bean.setDuracao(lig.getDuracaoLigacaoHoras());
            } else {
                bean.setDuracao("-");
            }
        } catch (Exception exc) {
            bean.setDuracao("-");
        }
        if (lig.getCusto() != null) {
            bean.setValor(String.valueOf(lig.getCusto()));
        } else {
            bean.setValor(String.valueOf(0.0));
        }
        if (lig.getTipoDeLigacao() != null) {
            if (lig.getTipoDeLigacao().length() > 70) {
                bean.setTipo(lig.getTipoDeLigacao());
            } else {
                bean.setTipo(lig.getTipoDeLigacao());
            }
        } else {
            bean.setTipo("-");
        }


        beans.add(bean);
    }
    Collections.sort(beans, new Comparators.CompareByNumberAndValueLigacaoBean());
    return beans;
}

private JRDataSource getLigacaoDataSource(List<AbstractBean> abstractBeanList) {
    return new LigacaoDataSource(abstractBeanList);
}[/code] 

métodos chamados no método acima

[code]public class LigacaoDataSource implements JRDataSource {

private Iterator<AbstractBean> iterator;
private LigacaoBean bean;

public LigacaoDataSource(List<AbstractBean> beans) {
    iterator = beans.iterator();
}

public boolean next() throws JRException {
    boolean next = iterator.hasNext();
    if (next) {
        bean = (LigacaoBean) iterator.next();
    }

    return next;
}

public Object getFieldValue(JRField jrf) throws JRException {        
    if (jrf.getName().equals("numeroDeOrigem")) {
        return bean.getNumeroDeOrigem();
    }
    if (jrf.getName().equals("numeroDeDestino")) {
        return bean.getNumeroDeDestino();
    }
    if (jrf.getName().equals("hora")) {
        return bean.getHora();
    }
    if (jrf.getName().equals("data")) {
        return bean.getData();
    }
    if (jrf.getName().equals("duracao")) {
        return bean.getDuracao();
    }        
    if (jrf.getName().equals("valor")) {
        return bean.getValor();
    }
    if (jrf.getName().equals("tipo")) {
        return bean.getTipo();
    }
    return null;
}

}[/code] classe que implementa o JRDataSource

[code]public class LigacaoBean implements AbstractBean {

private String NUMERODEORIGEM;
private String NUMERODESTINO;
private String DATA;
private String HORA;
private String DURACAO;
private String VALORTOTAL;
private String TIPO;

public LigacaoBean() {
}

public LigacaoBean(String numeroDeOrigem, String numeroDeDestino, String data, String hora, String duracao, String valor, String tipo) {
    this.NUMERODEORIGEM = numeroDeOrigem;
    this.NUMERODESTINO = numeroDeDestino;
    this.DATA = data;
    this.HORA = hora;
    this.DURACAO = duracao;
    this.VALORTOTAL = valor;
    this.TIPO = tipo;
}

public String getNumeroDeDestino() {
    return NUMERODESTINO;
}

public void setNumeroDeDestino(String numeroDeDestino) {
    this.NUMERODESTINO = numeroDeDestino;
}

public String getNumeroDeOrigem() {
    return NUMERODEORIGEM;
}

public void setNumeroDeOrigem(String numeroDeOrigem) {
    this.NUMERODEORIGEM = numeroDeOrigem;
}    

public String getTipo() {
    return TIPO;
}

public void setTipo(String tipo) {
    this.TIPO = tipo;
}

public String getValor() {
    return VALORTOTAL;
}

public void setValor(String valor) {
    this.VALORTOTAL = valor;
}

public String getData() {
    return DATA;
}

public void setData(String data) {
    this.DATA = data;
}

public String getDuracao() {
    return DURACAO;
}

public void setDuracao(String duracao) {
    this.DURACAO = duracao;
}

public String getHora() {
    return HORA;
}

public void setHora(String hora) {
    this.HORA = hora;
}

}[/code]
meu objeto bean

java.lang.NullPointerException at java.lang.Class.isAssignableFrom(Native Method) at net.sf.jasperreports.engine.fill.JRFillTextField.getFormat(JRFillTextField.java:706) at net.sf.jasperreports.engine.fill.JRFillTextField.evaluateText(JRFillTextField.java:394) at net.sf.jasperreports.engine.fill.JRFillTextField.evaluate(JRFillTextField.java:368) at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:258) at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:499) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2036) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:760) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:270) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:946) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:864) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:84) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:624) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:540)
Erro gerado.

Já tentei de tudo, e tenho métodos que fazem a mesma coisa para outros relatórios que funcionam.
Se alguem puder dar uma luz.

A o xml do relatório é esse.

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="TotalReport" language="groovy" pageWidth="842" pageHeight="595" orientation="Landscape" columnWidth="802" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
	<property name="ireport.zoom" value="1.1000000000000025"/>
	<property name="ireport.x" value="49"/>
	<property name="ireport.y" value="0"/>
	<style name="table">
		<box>
			<pen lineWidth="0.25" lineColor="#000000"/>
		</box>
	</style>
	<style name="table_TH" mode="Opaque" backcolor="#F0F8FF">
		<box>
			<pen lineWidth="0.5" lineColor="#000000"/>
		</box>
	</style>
	<style name="table_CH" mode="Opaque" backcolor="#BFE1FF">
		<box>
			<pen lineWidth="0.5" lineColor="#000000"/>
		</box>
	</style>
	<style name="table_TD" mode="Opaque" backcolor="#FFFFFF">
		<box>
			<pen lineWidth="0.5" lineColor="#000000"/>
		</box>
	</style>
	<subDataset name="Table Dataset 1"/>
	<queryString>
		<![CDATA[]]>
	</queryString>
	<field name="data" class="java.lang.String">
		<fieldDescription><![CDATA[data]]></fieldDescription>
	</field>
	<field name="duracao" class="java.lang.String">
		<fieldDescription><![CDATA[duracao]]></fieldDescription>
	</field>
	<field name="hora" class="java.lang.String">
		<fieldDescription><![CDATA[hora]]></fieldDescription>
	</field>
	<field name="numeroDeDestino" class="java.lang.String">
		<fieldDescription><![CDATA[numeroDeDestino]]></fieldDescription>
	</field>
	<field name="numeroDeOrigem" class="java.lang.String">
		<fieldDescription><![CDATA[numeroDeOrigem]]></fieldDescription>
	</field>
	<field name="tipo" class="java.lang.String">
		<fieldDescription><![CDATA[tipo]]></fieldDescription>
	</field>
	<field name="valor" class="java.lang.String">
		<fieldDescription><![CDATA[valor]]></fieldDescription>
	</field>
	<background>
		<band splitType="Stretch"/>
	</background>
	<title>
		<band splitType="Stretch"/>
	</title>
	<pageHeader>
		<band height="36" splitType="Stretch"/>
	</pageHeader>
	<columnHeader>
		<band height="15" splitType="Stretch">
			<staticText>
				<reportElement style="table" mode="Transparent" x="95" y="0" width="183" height="15"/>
				<textElement verticalAlignment="Middle">
					<font fontName="Arial" size="10" isBold="true"/>
				</textElement>
				<text><![CDATA[Número de Destino]]></text>
			</staticText>
			<staticText>
				<reportElement style="table" mode="Transparent" x="0" y="0" width="95" height="15"/>
				<textElement verticalAlignment="Middle">
					<font fontName="Arial" size="10" isBold="true"/>
				</textElement>
				<text><![CDATA[Número de Origem]]></text>
			</staticText>
			<staticText>
				<reportElement style="table" mode="Transparent" x="278" y="0" width="64" height="15"/>
				<textElement textAlignment="Center" verticalAlignment="Middle">
					<font fontName="Arial" size="10" isBold="true"/>
				</textElement>
				<text><![CDATA[Data]]></text>
			</staticText>
			<staticText>
				<reportElement style="table" mode="Transparent" x="342" y="0" width="64" height="15"/>
				<textElement textAlignment="Center" verticalAlignment="Middle">
					<font fontName="Arial" size="10" isBold="true"/>
				</textElement>
				<text><![CDATA[Hora]]></text>
			</staticText>
			<staticText>
				<reportElement style="table" mode="Transparent" x="508" y="0" width="92" height="15"/>
				<textElement textAlignment="Center" verticalAlignment="Middle">
					<font fontName="Arial" size="10" isBold="true"/>
				</textElement>
				<text><![CDATA[Valor Total]]></text>
			</staticText>
			<staticText>
				<reportElement style="table" mode="Transparent" x="600" y="0" width="92" height="15"/>
				<textElement textAlignment="Center" verticalAlignment="Middle">
					<font fontName="Arial" size="10" isBold="true"/>
				</textElement>
				<text><![CDATA[Tipo de Ligação]]></text>
			</staticText>
			<staticText>
				<reportElement style="table" mode="Transparent" x="406" y="0" width="102" height="15"/>
				<textElement verticalAlignment="Middle">
					<font fontName="Arial" size="10" isBold="true"/>
				</textElement>
				<text><![CDATA[Duração]]></text>
			</staticText>
		</band>
	</columnHeader>
	<detail>
		<band height="18" splitType="Stretch">
			<textField pattern="" isBlankWhenNull="false">
				<reportElement style="table" stretchType="RelativeToTallestObject" mode="Transparent" x="95" y="0" width="183" height="17"/>
				<textElement textAlignment="Center" verticalAlignment="Middle"/>
				<textFieldExpression><![CDATA[$F{numeroDeDestino}]]></textFieldExpression>
			</textField>
			<textField pattern="" isBlankWhenNull="false">
				<reportElement style="table" stretchType="RelativeToTallestObject" mode="Transparent" x="0" y="0" width="95" height="17"/>
				<textElement textAlignment="Center" verticalAlignment="Middle"/>
				<textFieldExpression><![CDATA[$F{numeroDeOrigem}]]></textFieldExpression>
			</textField>
			<textField pattern="" isBlankWhenNull="false">
				<reportElement style="table" stretchType="RelativeToTallestObject" mode="Transparent" x="278" y="0" width="64" height="17"/>
				<textElement textAlignment="Center" verticalAlignment="Middle"/>
				<textFieldExpression><![CDATA[$F{data}]]></textFieldExpression>
			</textField>
			<textField pattern="" isBlankWhenNull="false">
				<reportElement style="table" mode="Transparent" x="342" y="0" width="64" height="17"/>
				<textElement textAlignment="Center" verticalAlignment="Middle"/>
				<textFieldExpression><![CDATA[$F{hora}]]></textFieldExpression>
			</textField>
			<textField isBlankWhenNull="true">
				<reportElement style="table" x="508" y="0" width="92" height="17"/>
				<textElement textAlignment="Center" verticalAlignment="Middle"/>
				<textFieldExpression><![CDATA[$F{valor}]]></textFieldExpression>
			</textField>
			<textField pattern="" isBlankWhenNull="false">
				<reportElement style="table" x="600" y="0" width="92" height="17"/>
				<textElement textAlignment="Center" verticalAlignment="Middle"/>
				<textFieldExpression><![CDATA[$F{tipo}]]></textFieldExpression>
			</textField>
			<textField pattern="" isBlankWhenNull="false">
				<reportElement style="table" mode="Transparent" x="406" y="0" width="102" height="17"/>
				<textElement textAlignment="Center" verticalAlignment="Middle"/>
				<textFieldExpression><![CDATA[$F{duracao}]]></textFieldExpression>
			</textField>
		</band>
	</detail>
	<columnFooter>
		<band splitType="Stretch"/>
	</columnFooter>
	<pageFooter>
		<band splitType="Stretch"/>
	</pageFooter>
	<summary>
		<band splitType="Stretch"/>
	</summary>
</jasperReport>

[jaziel.rc]

Bom dia,
não sei se resolve o seu caso, mas eu tive esse mesmo erro, e solucionei ele acertando as libs do jasperreports. Eu estava usando uma versão diferente do editor irreport e no meu projeto. Não sei se irá resolver no seu caso, mas é algo a se tentar. No meu caso foi tentativa e erro mesmo, pq o erro apresentado tem nada a ver com versões de lib( no meu ponto de vista).

[dandanfonte]

no caso eu estou usando o ireport contido no netbeans, e já tentei mudar as libs contidas no projeto.

Ninguém teria alguma idéia sobre como resolver o problema