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import java.lang.reflect.Field;
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import java.util.Map;
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import net.sf.saxon.Configuration;
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import net.sf.saxon.expr.XPathContext;
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import net.sf.saxon.expr.instruct.Bindery;
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import net.sf.saxon.expr.instruct.GlobalParameterSet;
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import net.sf.saxon.lib.ExtensionFunctionCall;
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import net.sf.saxon.lib.ExtensionFunctionDefinition;
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import net.sf.saxon.om.Sequence;
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import net.sf.saxon.om.StructuredQName;
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import net.sf.saxon.s9api.Processor;
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import net.sf.saxon.s9api.QName;
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import net.sf.saxon.s9api.XQueryCompiler;
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import net.sf.saxon.s9api.XQueryEvaluator;
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import net.sf.saxon.s9api.XQueryExecutable;
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import net.sf.saxon.s9api.XdmValue;
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import net.sf.saxon.value.SequenceType;
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import net.sf.saxon.value.StringValue;
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public class ExternalVar {
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public static void main(String[] args) throws Exception {
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Configuration configuration = new Configuration();
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Processor processor = new Processor(configuration);
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processor.registerExtensionFunction(new ExtensionFunctionDefinition() {
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@Override
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public StructuredQName getFunctionQName() {
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return new StructuredQName("external", "http://external.module", "function");
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}
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@Override
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public SequenceType[] getArgumentTypes() {
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return new SequenceType[]{};
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}
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@Override
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public SequenceType getResultType(SequenceType[] arg0) {
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return SequenceType.SINGLE_STRING;
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}
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@Override
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public ExtensionFunctionCall makeCallExpression() {
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return new ExtensionFunctionCall() {
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@Override
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public Sequence call(XPathContext context, Sequence[] args) {
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try {
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Bindery bindery = context.getController().getBindery();
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Field field = Bindery.class.getDeclaredField("globalParameters");
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field.setAccessible(true);
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GlobalParameterSet globalParameterSet = (GlobalParameterSet) field.get(bindery);
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return globalParameterSet.get(new StructuredQName("external", "http://external.module", "variable"));
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}
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catch (RuntimeException e) {
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throw e;
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}
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catch (Exception e) {
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throw new RuntimeException("failed with exception", e);
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}
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}
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};
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}
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});
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XQueryCompiler compiler = processor.newXQueryCompiler();
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XQueryExecutable executable = compiler.compile(
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"declare namespace external='http://external.module';\n" +
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"external:function()"
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);
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XQueryEvaluator evaluator = executable.load();
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evaluator.setExternalVariable(new QName("http://external.module", "variable"), XdmValue.wrap(new StringValue("value")));
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evaluator.run(processor.newSerializer(System.out));
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}
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}
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