<table1>
    <row>
        <person>person1</person>
        <value>10</value>
    </row>
    <row>
        <person>person2</person>
        <value>20</value>
    </row>
    <row>
        <person>person1</person>
        <value>5</value>
    </row>
</table1>
<summaryTable>
    <row>
        <person>person1</person>
        <value_total/>
    </row>
    <row>
        <person>person2</person>
        <value_total/>
    </row>
</summaryTable>

<xf:bind id="bind_table1"
    nodeset="table1" repeatableElement="row">
    <xf:bind id="bind_head_table1" nodeset="head" />
    <xf:bind id="bind_row_table1" nodeset="row">
        <xf:bind id="bind_person" nodeset="person"  type="xf:string" />
        <xf:bind id="bind_value" nodeset="value"    type="xf:integer" />
    </xf:bind>
</xf:bind>
<xf:bind id="bind_summaryTable"
    nodeset="summaryTable"
    repeatableElement="row">
    <xf:bind id="bind_head_summaryTable" nodeset="head" />
    <xf:bind id="bind_row_summaryTable" nodeset="row">
        <xf:bind id="bind_person_name" nodeset="person_name" type="xf:string" readonly="true"/>
        <xf:bind id="bind_value_total" nodeset="value_total" type="xf:integer" readonly="true" calculate="SUM(//table1/row[person/text() = ../person_name/text()]/value)"/>
    </xf:bind>
</xf:bind>

<xf:bind id="bind_value_total" nodeset="value_total" type="xf:integer" readonly="true" calculate="SUM(//table1/row[person/text() = 'person1']/value)"/>