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Multiple queries
Added by Anonymous over 19 years ago
Legacy ID: #3100091
Legacy Poster: vguiraud (vguiraud)
Hello, Since Saxon 8.4, the same StaticQueryContext object may be used to define
multiple queries. I tested this new functionality. I can't define a function on a query
and use it in another query. Here is the java code : Configuration iConfiguration = new
Configuration(); iConfiguration.setHostLanguage(Configuration.XQUERY);
StaticQueryContext iStaticContext = new StaticQueryContext(iConfiguration);
iStaticContext.buildDocument(new DOMSource(getPDOM("...")));
DynamicQueryContext iDynContext = new DynamicQueryContext(iConfiguration);
XQueryExpression iExpr = iStaticContext.compileQuery("declare namespace
test='TEST'; 'i'"); iExpr.evaluate(iDynContext); XQueryExpression iExpr2 =
iExpr.getStaticContext().compileQuery("declare function test:FUNC() {'i'};
'i'"); iExpr2.evaluate(iDynContext); XQueryExpression iExpr3 =
iExpr2.getStaticContext().compileQuery("test:FUNC()");
iExpr3.evaluate(iDynContext); Here is the stack trace : java.lang.AssertionError:
executable.getFunctionLibrary() is an instance of
net.sf.saxon.functions.FunctionLibraryList at
net.sf.saxon.query.XQueryFunction.compile(XQueryFunction.java:189) at
net.sf.saxon.query.XQueryFunctionLibrary.fixupGlobalFunctions(XQueryFunctionLibrary.java:225)
at
net.sf.saxon.query.StaticQueryContext.fixupGlobalFunctions(StaticQueryContext.java:984)
at net.sf.saxon.query.QueryParser.parseQuery(QueryParser.java:153) at
net.sf.saxon.query.QueryParser.makeXQueryExpression(QueryParser.java:71) at
net.sf.saxon.query.StaticQueryContext.compileQuery(StaticQueryContext.java:254) How can
I do it ? Thanks a lot for your help.
Legacy ID: #3100190
Legacy Poster: Michael Kay (mhkay)
Since Saxon 8.4, the same StaticQueryContext object may be used to define multiple
queries. Correct. I tested this new functionality. I can't define a function on a query
and use it in another query. Also correct. I think you have misunderstood the new
functionality. It makes a single StaticQueryContext object serially reusable, so you can
do create StaticQueryContext compile Query A run Query A compile Query B run Query B
compile Query C run Query C This doesn't mean that anything (e.g. functions) defined in
query A is accessible to query B. To do this, you need to use "import
module" as defined in the language specification. (In fact, when you use
"import module", each module has its own StaticQueryContext object.)
Michael Kay
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