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java - Jasper subreport showing only one entry from the JSON data source when embedded in the Title band

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java - Jasper subreport showing only one entry from the JSON data source when embedded in the Title band

I am having issues with populating data in subreport in the title band of the main report. The data is populated correctly in subreport in the detail band of the main report. I am trying to find what could be wrong in the JSON query. Any help is appreciated.

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JSON Sample Data Source (expenses.json)

{
  "expenses": {
    "date": "8 Sep 2016",
    "accounts": [
      {
        "title": "XYZ Corp (111)",
        "accountName": "XYZ Corp",
        "accountNumber": "111",
        "transactions": [
          {
            "date": "21 Jun 2016",
            "name": "gas",
            "price": "17.50"
          },
          {
            "date": "12 May 2016",
            "name": "shopping",
            "price": "111.99"
          },
          {
            "date": "30 Apr 2016",
            "name": "movies",
            "price": "7.50"
          }
        ]
      },
      {
        "title": "ABC Corp (222)",
        "accountName": "ABC Corp",
        "accountNumber": "222",
        "transactions": [
          {
            "date": "2 Jun 2016",
            "name": "coffee",
            "price": "3.25"
          },
          {
            "date": "21 May 2016",
            "name": "tea",
            "price": "1.90"
          },
          {
            "date": "20 Apr 2016",
            "name": "juice",
            "price": "4.50"
          }
        ]
      }
    ]
  }
}

Main report (main.jrxml)

<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.3.0.final using JasperReports Library version 6.3.0  -->
<!-- 2016-09-08T14:41:09 -->
<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="expenses_main" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="8cf0f1cb-ccad-41ba-aa8a-44abd597de54">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="expenses json data"/>
    <queryString language="json">
        <![CDATA[expenses.accounts]]>
    </queryString>
    <field name="title" class="java.lang.String">
        <fieldDescription><![CDATA[title]]></fieldDescription>
    </field>
    <field name="date" class="java.lang.String">
        <fieldDescription><![CDATA[expenses.date]]></fieldDescription>
    </field>
    <background>
        <band splitType="Stretch"/>
    </background>
    <title>
        <band height="71" splitType="Stretch">
            <staticText>
                <reportElement x="2" y="0" width="201" height="16" uuid="2e947a01-8b6b-4169-beaa-6b2dac0d4141"/>
                <text><![CDATA[Expense Report]]></text>
            </staticText>
            <subreport>
                <reportElement x="2" y="44" width="550" height="22" uuid="1d364987-9047-4660-bd58-8a2bcfc8493d"/>
                <dataSourceExpression><![CDATA[((net.sf.jasperreports.engine.data.JsonDataSource)$P{REPORT_DATA_SOURCE}).subDataSource()]]></dataSourceExpression>
                <subreportExpression><![CDATA["/Users/arul/JaspersoftWorkspaceV2/reports/sub1.jasper"]]></subreportExpression>
            </subreport>
            <textField>
                <reportElement x="442" y="0" width="100" height="16" uuid="1cfbe11b-4f85-4bad-9280-d8712b80a65c"/>
                <textFieldExpression><![CDATA[$F{date}]]></textFieldExpression>
            </textField>
            <staticText>
                <reportElement x="410" y="1" width="31" height="15" uuid="ee159651-5d7b-4e0e-a52a-cb71338891cc"/>
                <text><![CDATA[Date: ]]></text>
            </staticText>
        </band>
    </title>
    <detail>
        <band height="54" splitType="Stretch">
            <textField>
                <reportElement x="2" y="10" width="550" height="20" uuid="3b6e1d4b-2a58-4684-b334-396807db1169"/>
                <textFieldExpression><![CDATA["Transactions for " + $F{title}]]></textFieldExpression>
            </textField>
            <subreport>
                <reportElement x="2" y="30" width="545" height="20" uuid="10fde2aa-2b0b-4c1c-90d5-410f2fb9369b"/>
                <dataSourceExpression><![CDATA[((net.sf.jasperreports.engine.data.JsonDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("transactions")]]></dataSourceExpression>
                <subreportExpression><![CDATA["/Users/arul/JaspersoftWorkspaceV2/reports/sub2.jasper"]]></subreportExpression>
            </subreport>
        </band>
    </detail>
</jasperReport>

Subreport1 (sub1.jrxml)

<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.3.0.final using JasperReports Library version 6.3.0  -->
<!-- 2016-09-08T14:43:35 -->
<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="expenses_summary" pageWidth="555" pageHeight="802" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="d8ef4ad1-3a01-4394-a78c-17f9d95f98de">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="expenses json data"/>
    <queryString language="JSON">
        <![CDATA[expenses.accounts]]>
    </queryString>
    <field name="accountName" class="java.lang.String">
        <fieldDescription><![CDATA[accountName]]></fieldDescription>
    </field>
    <field name="accountNumber" class="java.lang.String">
        <fieldDescription><![CDATA[accountNumber]]></fieldDescription>
    </field>
    <background>
        <band splitType="Stretch"/>
    </background>
    <title>
        <band height="21">
            <staticText>
                <reportElement x="0" y="0" width="100" height="20" uuid="258b2395-7fd1-4df0-b000-e2bfd2620fab"/>
                <textElement>
                    <font isBold="true"/>
                </textElement>
                <text><![CDATA[Account Summary]]></text>
            </staticText>
        </band>
    </title>
    <columnHeader>
        <band height="21" splitType="Stretch">
            <staticText>
                <reportElement mode="Opaque" x="0" y="0" width="100" height="20" backcolor="#DBD7D7" uuid="b04ff630-de8e-4a9b-9ea0-d402d4734ae7"/>
                <box>
                    <topPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <rightPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                </box>
                <text><![CDATA[Account Name]]></text>
            </staticText>
            <staticText>
                <reportElement mode="Opaque" x="100" y="0" width="100" height="20" backcolor="#DBD7D7" uuid="6f0d406e-8d99-4364-888c-38bc6c0fa8c6"/>
                <box>
                    <topPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <rightPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                </box>
                <text><![CDATA[Account Number]]></text>
            </staticText>
        </band>
    </columnHeader>
    <detail>
        <band height="21" splitType="Stretch">
            <textField>
                <reportElement x="0" y="0" width="100" height="20" uuid="c140795a-02a5-4334-9c5f-dc50e8a8ff6f"/>
                <box>
                    <topPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <rightPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                </box>
                <textFieldExpression><![CDATA[$F{accountName}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="100" y="0" width="100" height="20" uuid="ac7a5340-4c86-45d2-a932-b7b0e347a421"/>
                <box>
                    <topPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <rightPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                </box>
                <textFieldExpression><![CDATA[$F{accountNumber}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

Subreport2 (sub2.jrxml)

<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.3.0.final using JasperReports Library version 6.3.0  -->
<!-- 2016-09-08T14:43:55 -->
<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="expenses_subreport" pageWidth="555" pageHeight="802" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="2e39bfaf-e964-4b5d-847e-6517de5718d4">
    <field name="date" class="java.lang.String"/>
    <field name="name" class="java.lang.String"/>
    <field name="price" class="java.lang.String"/>
    <background>
        <band splitType="Stretch"/>
    </background>
    <columnHeader>
        <band height="20" splitType="Stretch">
            <staticText>
                <reportElement mode="Opaque" x="0" y="0" width="100" height="20" backcolor="#DBD7D7" uuid="8e073b78-91de-4819-886a-2527d5634067"/>
                <box>
                    <topPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="1.0"

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1 Answer

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by (71.8m points)

Your are going to deep in your initial json query

<queryString language="json">
        <![CDATA[expenses.accounts]]>
</queryString>

Date is out of scope.

The solution is to stay on expenses scope

<queryString language="json">
        <![CDATA[expenses]]>
</queryString>

The subreport 1 (sub1.jasper) you will now call with subDataSource("accounts") expression

<dataSourceExpression><![CDATA[((net.sf.jasperreports.engine.data.JsonDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("accounts")]]></dataSourceExpression>

However you will now have only 1 detail band record (expenses), to solve this issue you can introduce another subreport.

Instead of directly calling sub report 2 introduce a subreport 1_2 (sub1_2.jasper) to iterate again on accounts subDataSource("accounts"), this will display the title and include your subreport 2 (sub2.jasper) with the datasource on transaction .subDataSource("transactions")

Main report (main.jrxml)

<?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="expenses_main" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="8cf0f1cb-ccad-41ba-aa8a-44abd597de54">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="Json"/>
    <queryString language="json">
        <![CDATA[expenses]]>
    </queryString>
    <field name="date" class="java.lang.String">
        <fieldDescription><![CDATA[date]]></fieldDescription>
    </field>
    <background>
        <band splitType="Stretch"/>
    </background>
    <title>
        <band height="71" splitType="Stretch">
            <staticText>
                <reportElement x="2" y="0" width="201" height="16" uuid="2e947a01-8b6b-4169-beaa-6b2dac0d4141"/>
                <text><![CDATA[Expense Report]]></text>
            </staticText>
            <subreport>
                <reportElement x="2" y="44" width="550" height="22" uuid="1d364987-9047-4660-bd58-8a2bcfc8493d"/>
                <dataSourceExpression><![CDATA[((net.sf.jasperreports.engine.data.JsonDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("accounts")]]></dataSourceExpression>
                <subreportExpression><![CDATA["sub1.jasper"]]></subreportExpression>
            </subreport>
            <textField>
                <reportElement x="442" y="0" width="100" height="16" uuid="1cfbe11b-4f85-4bad-9280-d8712b80a65c"/>
                <textFieldExpression><![CDATA[$F{date}]]></textFieldExpression>
            </textField>
            <staticText>
                <reportElement x="410" y="1" width="31" height="15" uuid="ee159651-5d7b-4e0e-a52a-cb71338891cc"/>
                <text><![CDATA[Date: ]]></text>
            </staticText>
        </band>
    </title>
    <detail>
        <band height="36" splitType="Stretch">
            <subreport isUsingCache="false">
                <reportElement x="2" y="10" width="545" height="20" uuid="10fde2aa-2b0b-4c1c-90d5-410f2fb9369b"/>
                <dataSourceExpression><![CDATA[((net.sf.jasperreports.engine.data.JsonDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("accounts")]]></dataSourceExpression>
                <subreportExpression><![CDATA["sub1_2.jasper"]]></subreportExpression>
            </subreport>
        </band>
    </detail>
</jasperReport>

Sub report 1_2 (sub1_2.jasper)

<?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="expenses_subreport" pageWidth="555" pageHeight="802" columnWidth="555" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="2e39bfaf-e964-4b5d-847e-6517de5718d4">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="Json"/>
    <field name="title" class="java.lang.String"/>
    <background>
        <band splitType="Stretch"/>
    </background>
    <detail>
        <band height="40" splitType="Stretch">
            <property name="com.jaspersoft.studio.unit.height" value="pixel"/>
            <textField>
                <reportElement x="2" y="1" width="550" height="20" uuid="934d546e-aeeb-4760-b100-cbefed73c420"/>
                <textFieldExpression><![CDATA["Transactions for " + $F{title}]]></textFieldExpression>
            </textField>
            <subreport isUsingCache="false">
                <reportElement x="5" y="16" width="545" height="20" uuid="1b8b0487-9dfa-4b82-bfb1-13009cb74ece"/>
                <dataSourceExpression><![CDATA[((net.sf.jasperreports.engine.data.JsonDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("transactions")]]></dataSourceExpression>
                <subreportExpression><![CDATA["sub2.jasper"]]></subreportExpression>
            </subreport>
        </band>
    </detail>
</jasperReport>

Sub report 1 and 2 (sub1.jrxml and sub2.jrxml)

No changes

Result

output


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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