Mirth是一个帮助医疗保健应用HL7消息集成的经纪人。
我的问题是每次想要查找HL7中包含的某些数据时,都要省去自己的数据存储区。
方案: 对于通道收到的每条消息,我想找到设施的助记符/代码/ ID并获取设施的全名。不幸的是,我不能要求HL7消息的发送者为我发送消息。因此,我必须编写自己的数据库访问代码来调用存储过程,传入ID并接收全名。
如何在Mirth中创建数据缓存,以便您可以从任何渠道,来源,目的地,转换器或过滤器访问查找?
答案 0 :(得分:6)
在我们的情况下,我们必须从数据库加载查找值,我们按如下方式解决了这个问题:
注意:在我们的例子中,每个键可以有两个与之关联的值。如果我们不使用两者,我们只需在数据库的查询中将第二个设置为null。
要加载全局地图,请将其放置在频道的部署脚本中(根据需要进行自定义):
// This script executes once when the mule engine is started
// You only have access to the globalMap here to persist data
var sqlDBDriver = 'net.sourceforge.jtds.jdbc.Driver';
var sqlDBName = 'jdbc:jtds:sqlserver://databaseserver/databasename';
var sqlDBDUser = 'username';
var sqlDBPassword = 'password';
function PopulateLookup ( sqlQuery, globalMapName )
{
logger.info('Loading lookup table values in the deploy script: ' + globalMapName);
var dbConn = DatabaseConnectionFactory.createDatabaseConnection( sqlDBDriver, sqlDBName, sqlDBDUser, sqlDBPassword );
var rs = dbConn.executeCachedQuery( sqlQuery );
dbConn.close();
var arr = new Array();
while(rs.next())
{
var obj = new Object();
obj.LeftValue = rs.getString('LeftValue');
obj.RightValue1 = rs.getString('RightValue1');
obj.RightValue2 = rs.getString('RightValue2');
arr.push(obj);
}
globalMap.put( globalMapName, arr );
}
PopulateLookup( 'SELECT keyColumn as LeftValue, Value1 as RightValue1, Value2 as RightValue2 FROM tableName', 'GlobalMapName' );
// Repeat above line as needed for each lookup you need
return;
要访问这些值,请使用以下函数作为全局模板。
function FindLookupValueWithDefault ( LookupGlobalMapName, LeftValue, DefaultValue1, DefaultValue2 ){
/***********************************************************************************************
DESCRIPTION: Retrieves lookup table values from the global map and uses the input values to return output values
PARAMETERS:
LookupGlobalMapName - name of the lookup table in the Global Map
LeftValue - The value to look up
DefaultValue1 - the first default value if a match was not found
DefaultValue2 - the second default value if a match was not found
RETURNS:
An object containing the replacement value and associated OID if applicable
REMARKS:
************************************************************************************************/
// Retrieve the previously matched item from the globalmap
// We do this to save time and not look through a huge lookup table tons of times
// unless we absolutely have to
var prevItem = globalMap.get(LookupGlobalMapName + '-Previous');
// This is the same item requested for this globalmap name - just return the previous value
if ( prevItem != null && prevItem.LeftValue == LeftValue) {
return prevItem;
}
//
// If we reach this point the previous item either did not exist or did not match
//
// Retrieve the array with lookup objects from the globalmap and search for the matching value
var arr = globalMap.get(LookupGlobalMapName);
var obj = new Object();
obj.LeftValue = LeftValue;
obj.RightValue1 = DefaultValue1;
obj.RightValue2 = DefaultValue2;
for each ( item in arr )
{
var pattern=new RegExp("^" + item.LeftValue + "$");
var result = pattern.test(LeftValue );
if ( pattern.test(LeftValue ) )
{
obj = item;
break;
}
}
// Store the previous value in the globalmap
globalMap.put( LookupGlobalMapName + '-Previous', obj );
// Return the object we found or created
return obj;
}
访问值的代码示例:
var myObject = FindLookupValueWithDefault('GlobalMapName', 'LookupValue', 'DefaultValue1', 'DefaultValue2');
if ( myObject != null )
{
var value1 = myObject.RightValue1;
var value2 = myObject.RightValue2;
}
您的里程可能会有所不同......但到目前为止,这对我们有用。
谢谢, Frans de Wet
答案 1 :(得分:2)
您可以尝试使用两个函数编写全局脚本:
1)使用您要查找的数据填充Java hastable或类似构造
2)使用您传入的参数作为哈希表的键,并返回与该键对应的哈希表中包含的数据。
在欢乐中使用Java的链接(link)