Question

我一直在尝试创建一个启用了多项选择的列表框报告参数。我正在尝试根据此参数过滤我的报告。我写了类似这样的代码，但它没有用;

importPackage(Packages.java.util.logging);
var fileHandler = new FileHandler("/tmp/birt.log", true);
var rootLogger = Logger.getLogger("");
rootLogger.addHandler(fileHandler);

var queryString = "";
queryString = "select * from public.r_"+params["rid"]+"_0 where (r_date_1 >= '"+params["startdate"]+"' and r_date_2 <'"+params["enddate"]+"')";
queryString += " and (r_vchar_3=";

filterIPLength = reportContext.getParameterValue("filterIP").length;
Logger.getAnonymousLogger().info("Parameter Count: "+filterIPLength);


for(i = 0; i<filterIPLength; i++) {
    queryString  += "'"+reportContext.getParameterValue("filterIP")[i]+"'";

    if (i != filterIPLength - 1) {
        queryString += "or r_vchar_3=";
    }
}

queryString += ")";
this.queryText = queryString;

这里的问题是，reportContext.getParameterValue("filterIP").length;行总是返回1，即使我选择了多个参数，报告也只显示了第一个选定的数据，因为for循环只运行一次。

可能导致此问题的原因是什么？我该如何调试和解决它？

任何想法将不胜感激。

Answer 1

你的脚本应该可以工作，至少它适用于我的BIRT版本（2.6，Eclipse 3.6，Win-32）。我写了一个小的简约报告（可以工作）来追踪问题，可能它可以帮助你调试。：

<?xml version="1.0" encoding="UTF-8"?> <report xmlns="http://www.eclipse.org/birt/2005/design" version="3.2.22" id="1"> <property name="createdBy">Eclipse BIRT Designer Version 2.6.1.v20100902 Build <2.6.1.v20100915-1750></property> <property name="units">in</property> <property name="iconFile">/templates/blank_report.gif</property> <property name="bidiLayoutOrientation">ltr</property> <property name="imageDPI">120</property> <parameters> <scalar-parameter name="NewParameter" id="7"> <property name="valueType">static</property> <property name="dataType">string</property> <property name="distinct">true</property> <list-property name="selectionList"> <structure> <property name="value">123</property> <property name="label">test</property> </structure> <structure> <property name="value">124</property> <property name="label">test2</property> </structure> </list-property> <property name="paramType">multi-value</property> <property name="controlType">list-box</property> <property name="mustMatch">true</property> <property name="fixedOrder">true</property> <structure name="format"> <property name="category">Unformatted</property> </structure> </scalar-parameter> </parameters> <data-sources> <script-data-source name="Data Source" id="95"> <method name="beforeOpen"><![CDATA[paramLength = reportContext.getParameterValue("NewParameter").length;]]></method> </script-data-source> </data-sources> <data-sets> <script-data-set name="Data Set" id="96"> <list-property name="resultSetHints"> <structure> <property name="position">0</property> <property name="name">test</property> <property name="dataType">string</property> </structure> </list-property> <list-property name="columnHints"> <structure> <property name="columnName">test</property> </structure> </list-property> <structure name="cachedMetaData"> <list-property name="resultSet"> <structure> <property name="position">1</property> <property name="name">test</property> <property name="dataType">string</property> </structure> </list-property> </structure> <property name="dataSource">Data Source</property> </script-data-set> </data-sets> <styles> <style name="report" id="4"> <property name="fontFamily">sans-serif</property> <property name="fontSize">10pt</property> </style> <style name="crosstab-cell" id="5"> <property name="borderBottomColor">#CCCCCC</property> <property name="borderBottomStyle">solid</property> <property name="borderBottomWidth">1pt</property> <property name="borderLeftColor">#CCCCCC</property> <property name="borderLeftStyle">solid</property> <property name="borderLeftWidth">1pt</property> <property name="borderRightColor">#CCCCCC</property> <property name="borderRightStyle">solid</property> <property name="borderRightWidth">1pt</property> <property name="borderTopColor">#CCCCCC</property> <property name="borderTopStyle">solid</property> <property name="borderTopWidth">1pt</property> </style> <style name="crosstab" id="6"> <property name="borderBottomColor">#CCCCCC</property> <property name="borderBottomStyle">solid</property> <property name="borderBottomWidth">1pt</property> <property name="borderLeftColor">#CCCCCC</property> <property name="borderLeftStyle">solid</property> <property name="borderLeftWidth">1pt</property> <property name="borderRightColor">#CCCCCC</property> <property name="borderRightStyle">solid</property> <property name="borderRightWidth">1pt</property> <property name="borderTopColor">#CCCCCC</property> <property name="borderTopStyle">solid</property> <property name="borderTopWidth">1pt</property> </style> </styles> <page-setup> <simple-master-page name="Simple MasterPage" id="2"> <page-footer> <text id="3"> <property name="contentType">html</property> <text-property name="content"><![CDATA[<value-of>new Date()</value-of>]]></text-property> </text> </page-footer> </simple-master-page> </page-setup> <body> <data id="107"> <property name="whiteSpace">nowrap</property> <property name="dataSet">Data Set</property> <list-property name="boundDataColumns"> <structure> <property name="name">test</property> <text-property name="displayName">test</text-property> <expression name="expression" type="javascript">dataSetRow["test"]</expression> <property name="dataType">string</property> </structure> </list-property> <property name="resultSetColumn">test</property> </data> <text-data id="93"> <expression name="valueExpr">"Param length is " + paramLength</expression> <property name="contentType">html</property> </text-data> </body> </report>

BIRT，如何获取报告参数的长度？

1 个答案: