问题
The following works fine in CFMX 7 and CF8, and I'd assume CF9 as well:
<!--- 'conn' is a JDBC connection --->
<cfset stat = conn.createStatement() />
<cfset rs = stat.executeQuery(trim(arguments.sql)) />
<!--- convert this Java resultset to a CF query recordset --->
<cfset queryTable = CreateObject("java", "coldfusion.sql.QueryTable")>
<cfset queryTable.init(rs) >
<cfset query = queryTable.FirstTable() />
This creates a statement using a JDBC driver, executes a query against it, putting it into a java resultset, and then coldfusion.sql.QueryTable is instantiated, passed the Java resulset object, and then queryTable.FirstTable() is called, which returns an actual coldfusion resultset (for cfloop and the like).
The problem comes with a difference in Railo's implementation. Running this code in Railo returns the following error: No matching Constructor for coldfusion.sql.QueryTable(org.sqlite.RS) found.
I've dumped the Railo java object, and don't see init() among the methods. Am I missing something simple? I'd love to get this working in Railo as well.
Please note: I am doing a DSN-less connection to a SQLite db. I understand how to set up a CF datasource. My only hiccup at this point is doing the translation from a Java result set to a Railo query.
回答1:
Looking at the Railo source code, I see that railo.runtime.type.QueryImpl might fit your needs. It implements railo.runtime.type.Query and accepts a ResultSet in its constructor, but it does not seem to implement QueryTable.
If that's the right class, you'll want to pass in a ResultSet and a string for the query name, as it doesn't have a constructor that only takes a ResultSet.
来源：https://stackoverflow.com/questions/2227134/how-does-one-convert-from-a-java-resultset-to-coldfusion-query-in-railo