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Support for real-time graph rendering with graphene.

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/**
 * Copyright (C) 2010-14 diirt developers. See COPYRIGHT.TXT
 * All rights reserved. Use is subject to license terms. See LICENSE.TXT
 */
package org.diirt.datasource.graphene;

import java.util.Arrays;
import java.util.List;
import org.diirt.datasource.BasicTypeSupport;
import static org.diirt.datasource.ExpressionLanguage.*;
import org.diirt.datasource.NotificationSupport;
import org.diirt.datasource.ReadFunction;
import org.diirt.datasource.TypeSupport;
import org.diirt.datasource.vtype.DataTypeSupport;
import org.diirt.vtype.VNumber;
import org.diirt.vtype.VNumberArray;
import org.diirt.datasource.expression.DesiredRateExpression;
import org.diirt.datasource.expression.DesiredRateExpressionImpl;
import org.diirt.datasource.expression.DesiredRateExpressionList;
import org.diirt.datasource.expression.DesiredRateExpressionListImpl;
import org.diirt.datasource.expression.SourceRateExpression;
import org.diirt.util.array.ListNumbers;
import org.diirt.vtype.VTable;
import org.diirt.vtype.ValueFactory;

/**
 *
 * @author carcassi
 */
public class ExpressionLanguage {
    private ExpressionLanguage() {}

    static {
        // Add support for Epics types.
        DataTypeSupport.install();
        // Add support for Basic types
        BasicTypeSupport.install();
        TypeSupport.addTypeSupport(NotificationSupport.immutableTypeSupport(Graph2DResult.class));
    }
    
    public static HistogramGraph2DExpression histogramGraphOf(
	    DesiredRateExpression arrayData) {
	return new HistogramGraph2DExpression(arrayData);
    }
    
    public static IntensityGraph2DExpression intensityGraphOf(
	    DesiredRateExpression arrayData) {
	return new IntensityGraph2DExpression(arrayData);
    }
    
    public static LineGraph2DExpression lineGraphOf(DesiredRateExpression vDoubleArray) {
        return lineGraphOf(vDoubleArray, null, null, null);
    }

    public static LineGraph2DExpression lineGraphOf(final DesiredRateExpression yArray,
            final DesiredRateExpression xInitialOffset,
            final DesiredRateExpression xIncrementSize) {
        DesiredRateExpression data = new DesiredRateExpressionImpl<>(createList(yArray, xInitialOffset, xIncrementSize), 
        new ReadFunction() {

            @Override
            public VTable readValue() {
                VNumberArray values = yArray.getFunction().readValue();
                VNumber offset = xInitialOffset.getFunction().readValue();
                VNumber increment = xIncrementSize.getFunction().readValue();
                
                if (values == null || offset == null || increment == null) {
                    return null;
                }
                
                return ValueFactory.newVTable(Arrays.>asList(double.class, double.class),
                        Arrays.asList("X", "Y"), 
                        Arrays.asList(ListNumbers.linearList(offset.getValue().doubleValue(), increment.getValue().doubleValue(), values.getData().size()),
                        new ListDoubleView(values.getData())));
            }
        }, "data");
        
        return lineGraphOf(data, null, null, null);
    }

    public static LineGraph2DExpression lineGraphOf(final DesiredRateExpression xVDoubleArray,
            final DesiredRateExpression yVDoubleArray) {
        DesiredRateExpression data = new DesiredRateExpressionImpl<>(createList(xVDoubleArray, yVDoubleArray), 
        new ReadFunction() {

            @Override
            public VTable readValue() {
                VNumberArray xValues = xVDoubleArray.getFunction().readValue();
                VNumberArray yValues = yVDoubleArray.getFunction().readValue();
                
                if (xValues == null || yValues == null) {
                    return null;
                }
                
                return ValueFactory.newVTable(Arrays.>asList(double.class, double.class),
                        Arrays.asList("X", "Y"), 
                        Arrays.asList(new ListDoubleView(xValues.getData()),
                        new ListDoubleView(yValues.getData())));
            }
        }, "data");
        
        return lineGraphOf(data, null, null, null);
    }
    public static LineGraph2DExpression lineGraphOf(
	    DesiredRateExpression tableData,
	    DesiredRateExpression xColumnName,
	    DesiredRateExpression yColumnName,
	    DesiredRateExpression tooltipColumnName) {
	return new LineGraph2DExpression(tableData, xColumnName, yColumnName, tooltipColumnName);
    }
    
    public static MultilineGraph2DExpression multilineGraphOf(
	    DesiredRateExpression tableData,
	    DesiredRateExpression xColumnName,
	    DesiredRateExpression yColumnName) {
	return new MultilineGraph2DExpression(tableData, xColumnName, yColumnName);
    }
    
    public static MultiAxisLineGraph2DExpression multiAxisLineGraphOf(
	    DesiredRateExpression tableData,
	    DesiredRateExpression xColumnName,
	    DesiredRateExpression yColumnName) {
	return new MultiAxisLineGraph2DExpression(tableData, xColumnName, yColumnName);
    }
    
    public static SparklineGraph2DExpression sparklineGraphOf(
	    DesiredRateExpression tableData,
	    DesiredRateExpression xColumnName,
	    DesiredRateExpression yColumnName) {
	return new SparklineGraph2DExpression(tableData, xColumnName, yColumnName);
    }
    
    public static ScatterGraph2DExpression scatterGraphOf(
	    DesiredRateExpression tableData,
	    DesiredRateExpression xColumnName,
	    DesiredRateExpression yColumnName,
	    DesiredRateExpression tooltipColumnName) {
	return new ScatterGraph2DExpression(tableData, xColumnName, yColumnName, tooltipColumnName);
    }
    
    public static BubbleGraph2DExpression bubbleGraphOf(
	    DesiredRateExpression tableData,
	    DesiredRateExpression xColumnName,
	    DesiredRateExpression yColumnName,
	    DesiredRateExpression sizeColumnName,
	    DesiredRateExpression tooltipColumnName) {
	return new BubbleGraph2DExpression(tableData, xColumnName, yColumnName, sizeColumnName, tooltipColumnName);
    }

    @SafeVarargs
    static  DesiredRateExpressionList createList(DesiredRateExpressionList... expressions) {
        DesiredRateExpressionList list = new DesiredRateExpressionListImpl();
        for (DesiredRateExpressionList exp : expressions) {
            if (exp != null) {
                list.and(exp);
            }
        }
        return list;
    }
    
    static  ReadFunction functionOf(DesiredRateExpression exp) {
        if (exp == null) {
            return null;
        } else {
            return exp.getFunction();
        }
    }

}
    

    

    

            

    

            



    
    






    
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