org.apache.deltaspike.scxml.impl.el.BuiltinFunctionMapper.java Source code

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Here is the source code for org.apache.deltaspike.scxml.impl.el.BuiltinFunctionMapper.java

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package org.apache.deltaspike.scxml.impl.el;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.Set;
import javax.el.FunctionMapper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.scxml.Builtin;

/**
 *
 * @author Waldemar Kaczyski
 */
public class BuiltinFunctionMapper extends FunctionMapper implements Serializable {

    private static final long serialVersionUID = 1L;
    private final Log log = LogFactory.getLog(BuiltinFunctionMapper.class);

    public BuiltinFunctionMapper() {
        super();
    }

    @Override
    public Method resolveFunction(final String prefix, final String localName) {
        if (localName.equals("In")) {
            Class[] attrs = new Class[] { Set.class, String.class };
            try {
                return Builtin.class.getMethod("isMember", attrs);
            } catch (SecurityException e) {
                log.error("resolving isMember(Set, String)", e);
            } catch (NoSuchMethodException e) {
                log.error("resolving isMember(Set, String)", e);
            }
        } else if (localName.equals("Data")) {
            // rvalue in expressions, coerce to String
            Class[] attrs = new Class[] { Map.class, Object.class, String.class };
            try {
                return Builtin.class.getMethod("data", attrs);
            } catch (SecurityException e) {
                log.error("resolving data(Node, String)", e);
            } catch (NoSuchMethodException e) {
                log.error("resolving data(Node, String)", e);
            }
        } else if (localName.equals("LData")) {
            // lvalue in expressions, retain as Node
            Class[] attrs = new Class[] { Map.class, Object.class, String.class };
            try {
                return Builtin.class.getMethod("dataNode", attrs);
            } catch (SecurityException e) {
                log.error("resolving data(Node, String)", e);
            } catch (NoSuchMethodException e) {
                log.error("resolving data(Node, String)", e);
            }
        }
        return null;
    }
}