1 package com.billkuker.rocketry.motorsim.io;
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3 import java.io.IOException;
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4 import java.io.InputStream;
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5 import java.io.ObjectInputStream;
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6 import java.io.ObjectOutputStream;
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7 import java.io.OutputStream;
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9 import java.net.URISyntaxException;
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11 import org.jscience.physics.amount.Amount;
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13 import com.billkuker.rocketry.motorsim.Fuel;
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14 import com.billkuker.rocketry.motorsim.Motor;
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15 import com.billkuker.rocketry.motorsim.fuel.FuelResolver;
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16 import com.billkuker.rocketry.motorsim.fuel.FuelResolver.FuelNotFound;
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17 import com.thoughtworks.xstream.XStream;
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18 import com.thoughtworks.xstream.converters.ConversionException;
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19 import com.thoughtworks.xstream.converters.Converter;
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20 import com.thoughtworks.xstream.converters.MarshallingContext;
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21 import com.thoughtworks.xstream.converters.UnmarshallingContext;
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22 import com.thoughtworks.xstream.converters.javabean.JavaBeanConverter;
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23 import com.thoughtworks.xstream.io.HierarchicalStreamReader;
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24 import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
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26 public class MotorIO {
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28 static class FuelConverter implements Converter{
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31 public boolean canConvert(Class c) {
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32 return Fuel.class.isAssignableFrom(c);
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36 public void marshal(Object o, HierarchicalStreamWriter w,
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37 MarshallingContext ctx) {
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39 w.setValue(f.getURI().toString());*/
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40 ctx.convertAnother(((Fuel)o).getURI());
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44 public Object unmarshal(HierarchicalStreamReader r,
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45 UnmarshallingContext ctx) {
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46 Object o = ctx.currentObject();
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48 Class<?> c = ctx.getRequiredType();
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50 uri = ctx.convertAnother(o, URI.class);
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51 } catch ( ConversionException e ){
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52 e.printStackTrace();
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54 if ( uri != null && uri instanceof URI ){
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56 return FuelResolver.getFuel((URI)uri);
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57 } catch (FuelNotFound e) {
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58 // TODO Auto-generated catch block
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59 e.printStackTrace();
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64 return FuelResolver.getFuel(new URI("motorsim:" + c.getSimpleName()));
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65 } catch (FuelNotFound e) {
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66 // TODO Auto-generated catch block
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67 e.printStackTrace();
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68 } catch (URISyntaxException e) {
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69 // TODO Auto-generated catch block
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70 e.printStackTrace();
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77 static class AmountConverter implements Converter{
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79 @SuppressWarnings("unchecked")
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80 public void marshal(Object o, HierarchicalStreamWriter w, MarshallingContext c) {
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81 Amount a = (Amount)o;
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83 //Leave off the fractional part if it is not relevant so we get exact values back
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85 text = a.getExactValue() + " " + a.getUnit();
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87 text = a.doubleValue(a.getUnit()) + " " + a.getUnit();
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91 public Object unmarshal(HierarchicalStreamReader r, UnmarshallingContext c) {
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92 String text = r.getValue();
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93 return Amount.valueOf(text);
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96 public boolean canConvert(Class c) {
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97 return c.equals(Amount.class);
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103 @SuppressWarnings("deprecation")
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104 private static XStream getXStream(){
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105 XStream xstream = new XStream();
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106 xstream.setMode(XStream.XPATH_ABSOLUTE_REFERENCES);
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107 xstream.registerConverter(new AmountConverter());
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108 xstream.registerConverter(new FuelConverter());
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109 xstream.registerConverter(new JavaBeanConverter(xstream.getClassMapper(), "class"), -20);
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113 @SuppressWarnings("deprecation")
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114 private static XStream getFuelXStream(){
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115 XStream xstream = new XStream();
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116 xstream.setMode(XStream.XPATH_ABSOLUTE_REFERENCES);
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117 xstream.registerConverter(new AmountConverter());
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118 xstream.registerConverter(new JavaBeanConverter(xstream.getClassMapper(), "class"), -20);
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122 public static void writeFuel(Fuel f, OutputStream os) throws IOException{
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123 ObjectOutputStream out = getFuelXStream().createObjectOutputStream(os);
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124 out.writeObject(f);
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129 public static Fuel readFuel(InputStream is) throws IOException{
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130 ObjectInputStream in = getFuelXStream().createObjectInputStream(is);
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133 f = (Fuel)in.readObject();
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134 } catch (ClassNotFoundException e) {
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135 throw new IOException("Class not found", e);
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140 public static void writeMotor(Motor m, OutputStream os) throws IOException{
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141 ObjectOutputStream out = getXStream().createObjectOutputStream(os);
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142 out.writeObject(m);
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147 public static Motor readMotor(InputStream is) throws IOException{
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148 ObjectInputStream in = getXStream().createObjectInputStream(is);
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151 m = (Motor)in.readObject();
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152 } catch (ClassNotFoundException e) {
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153 throw new IOException("Class not found", e);
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