MethodCallNodeImpl.java

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package com.sun.faces.flow;


import com.sun.faces.facelets.util.ReflectionUtil;
import com.sun.faces.util.FacesLogger;
import java.io.Serializable;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import javax.faces.context.FacesContext;
import javax.faces.flow.MethodCallNode;
import javax.faces.flow.Parameter;

public class MethodCallNodeImpl extends MethodCallNode implements Serializable {

    private static final long serialVersionUID = -5400138716176841428L;
    
    private final String id;
    
    private static final Logger LOGGER = FacesLogger.FLOW.getLogger();
    
    public MethodCallNodeImpl(String id) {
        this.id = id;
        _parameters = new CopyOnWriteArrayList<>();            
    }
    
    public MethodCallNodeImpl(FacesContext context, String id, 
            String methodExpressionString,
            String defaultOutcomeString,
            List<Parameter> parametersFromConfig) {
        this(id);
        if (null != parametersFromConfig) {
            _parameters.addAll(parametersFromConfig);
        }
        parameters = Collections.unmodifiableList(_parameters);
        
        ExpressionFactory ef = context.getApplication().getExpressionFactory();
        Class [] paramTypes = new Class[0];
        if (0 < parameters.size()) {
            paramTypes = new Class[parameters.size()];
            int i = 0;
            for (Parameter cur : parameters) {
                if (null != cur.getName()) {
                    try {
                        paramTypes[i] = ReflectionUtil.forName(cur.getName());
                    } catch (ClassNotFoundException cnfe) {
                        if (LOGGER.isLoggable(Level.SEVERE)) {
                            LOGGER.log(Level.SEVERE, "parameter " + cur.getName() + 
                                    "incorrect type", cnfe);
                        }
                        paramTypes[i] = null;
                    }
                } else {
                    paramTypes[i] = String.class;
                }
                i++;
            }
        }
        ELContext elContext = context.getELContext();
        methodExpression = ef.createMethodExpression(elContext, 
                methodExpressionString, null, paramTypes);
        
        if (null != defaultOutcomeString) {
            outcome = ef.createValueExpression(elContext, defaultOutcomeString, 
                    Object.class);
        }
        
    }
    
    private MethodExpression methodExpression;
    
    private ValueExpression outcome;

    private List<Parameter> _parameters;
    private List<Parameter> parameters;

    @Override
    public String getId() {
        return id;
    }

    @Override
    public List<Parameter> getParameters() {
        return parameters;
    }
    
    public List<Parameter> _getParameters() {
        if (null == parameters) {
            parameters = Collections.unmodifiableList(_parameters);
        }
        return _parameters;
    }

    @Override
    public MethodExpression getMethodExpression() {
        return methodExpression;
    }
    
    public void setMethodExpression(MethodExpression methodExpression) {
        this.methodExpression = methodExpression;
    }
    
    @Override
    public ValueExpression getOutcome() {
        return outcome;
    }

    public void setOutcome(ValueExpression outcome) {
        this.outcome = outcome;
    }
    
    
}