package org.simantics.modeling.scl;

import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.common.procedure.adapter.TransientCacheListener;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.scl.ExpressionAnalysis;
import org.simantics.db.layer0.variable.Variable;
import org.simantics.scl.runtime.SCLContext;
import org.simantics.scl.runtime.function.Function1;
import org.simantics.structural2.scl.AnalyseStructuralValueRequest;

public class AnalyseSCLValueRequest extends AnalyseStructuralValueRequest {

    public AnalyseSCLValueRequest(ReadGraph graph, Resource component, Resource value, Resource predicate)
            throws DatabaseException {
        super(component, value, predicate);
    }

    @Override
    protected ExpressionAnalysis<Variable> getAnalysis(AnalysisCompilationContext context, Function1<Variable, Object> fn) {
    	return new ExpressionAnalysis(fn, context.getConsumed());
    }
    
    public static ExpressionAnalysis analyse(ReadGraph graph, Resource component, Resource predicate, Resource value) throws DatabaseException {
        SCLContext sclContext = SCLContext.getCurrent();
        Object oldGraph = sclContext.get("graph");
        try {
            ExpressionAnalysis result = graph.syncRequest(new AnalyseSCLValueRequest(graph, component, value, predicate),
                    TransientCacheListener.<ExpressionAnalysis<Variable>>instance());
            sclContext.put("graph", graph);
            return result;
        } catch (DatabaseException e) {
            throw (DatabaseException)e;
        } catch (Throwable t) {
            throw new DatabaseException(t);
        } finally {
            sclContext.put("graph", oldGraph);
        }
    }
    
}