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| package org.apache.hivemind.service.impl; |
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| import java.lang.reflect.Modifier; |
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| import java.util.ArrayList; |
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| import java.util.HashMap; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| import java.util.Map; |
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| |
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| import javassist.CannotCompileException; |
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| import javassist.CtClass; |
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| import javassist.CtConstructor; |
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| import javassist.CtField; |
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| import javassist.CtMethod; |
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| import javassist.NotFoundException; |
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| |
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| import org.apache.hivemind.ApplicationRuntimeException; |
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| import org.apache.hivemind.service.ClassFab; |
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| import org.apache.hivemind.service.MethodFab; |
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| import org.apache.hivemind.service.MethodSignature; |
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| public class ClassFabImpl extends AbstractFab implements ClassFab |
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| { |
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| private class AddedConstructor |
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| { |
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| private Class[] _parameterTypes; |
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| private Class[] _exceptionTypes; |
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| private String _body; |
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1086
| AddedConstructor(Class[] parameterTypes, Class[] exceptionTypes, String body)
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| { |
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1086
| _parameterTypes = parameterTypes;
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1086
| _exceptionTypes = exceptionTypes;
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1086
| _body = body;
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| } |
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1
| public String toString()
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| { |
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1
| StringBuffer buffer = new StringBuffer();
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1
| buffer.append("public ");
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1
| buffer.append(getCtClass().getName());
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1
| buffer.append("(");
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| int count = size(_parameterTypes);
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1
| for (int i = 0; i < count; i++)
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| { |
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2
| if (i > 0)
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1
| buffer.append(", ");
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2
| buffer.append(_parameterTypes[i].getName());
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2
| buffer.append(" $");
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2
| buffer.append(i + 1);
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| } |
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| buffer.append(")");
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1
| count = size(_exceptionTypes);
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1
| for (int i = 0; i < count; i++)
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| { |
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2
| if (i == 0)
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| buffer.append("\n throws ");
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| else |
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| buffer.append(", ");
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| buffer.append(_exceptionTypes[i].getName());
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| } |
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| buffer.append("\n");
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| buffer.append(_body);
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| buffer.append("\n");
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| return buffer.toString();
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| } |
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2
| private int size(Object[] array)
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| { |
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2
| return array == null ? 0 : array.length;
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| } |
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| } |
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| private Map _methods = new HashMap(); |
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| private List _constructors = new ArrayList(); |
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2096
| public ClassFabImpl(CtClassSource source, CtClass ctClass)
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| { |
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2096
| super(source, ctClass);
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| } |
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1
| public String toString()
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| { |
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1
| StringBuffer buffer = new StringBuffer("ClassFab[\n");
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1
| try
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| { |
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1
| buildClassAndInheritance(buffer);
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1
| buildFields(buffer);
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1
| buildConstructors(buffer);
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1
| buildMethods(buffer);
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| } |
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| catch (Exception ex) |
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| { |
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0
| buffer.append(" *** ");
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0
| buffer.append(ex);
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| } |
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1
| buffer.append("\n]");
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1
| return buffer.toString();
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| } |
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1
| private void buildMethods(StringBuffer buffer)
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| { |
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| Iterator i = _methods.values().iterator();
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1
| while (i.hasNext())
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| { |
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1
| MethodFab mf = (MethodFab) i.next();
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1
| buffer.append("\n");
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1
| buffer.append(mf);
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1
| buffer.append("\n");
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| } |
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| } |
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178 |
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179 |
1
| private void buildConstructors(StringBuffer buffer)
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| { |
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181 |
1
| Iterator i = _constructors.iterator();
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183 |
1
| while (i.hasNext())
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| { |
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1
| buffer.append("\n");
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1
| buffer.append(i.next());
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| } |
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188 |
| } |
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191 |
1
| private void buildFields(StringBuffer buffer) throws NotFoundException
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| { |
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1
| CtField fields[] = getCtClass().getDeclaredFields();
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1
| for (int i = 0; i < fields.length; i++)
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| { |
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1
| buffer.append("\n");
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1
| buffer.append(modifiers(fields[i].getModifiers()));
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1
| buffer.append(" ");
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1
| buffer.append(fields[i].getType().getName());
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201 |
1
| buffer.append(" ");
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202 |
1
| buffer.append(fields[i].getName());
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203 |
1
| buffer.append(";\n");
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204 |
| } |
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205 |
| } |
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206 |
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207 |
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208 |
1
| private void buildClassAndInheritance(StringBuffer buffer) throws NotFoundException
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209 |
| { |
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210 |
1
| buffer.append(modifiers(getCtClass().getModifiers()));
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211 |
1
| buffer.append(" class ");
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212 |
1
| buffer.append(getCtClass().getName());
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213 |
1
| buffer.append(" extends ");
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214 |
1
| buffer.append(getCtClass().getSuperclass().getName());
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215 |
1
| buffer.append("\n");
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216 |
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217 |
1
| CtClass[] interfaces = getCtClass().getInterfaces();
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218 |
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219 |
1
| if (interfaces.length > 0)
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220 |
| { |
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221 |
1
| buffer.append(" implements ");
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222 |
| |
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223 |
1
| for (int i = 0; i < interfaces.length; i++)
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224 |
| { |
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225 |
2
| if (i > 0)
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226 |
1
| buffer.append(", ");
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227 |
| |
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228 |
2
| buffer.append(interfaces[i].getName());
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229 |
| } |
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230 |
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231 |
1
| buffer.append("\n");
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232 |
| } |
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233 |
| } |
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234 |
| |
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235 |
2
| private String modifiers(int modifiers)
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236 |
| { |
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237 |
2
| return Modifier.toString(modifiers);
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238 |
| } |
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239 |
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240 |
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241 |
| |
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242 |
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243 |
1
| String getName()
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|
244 |
| { |
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245 |
1
| return getCtClass().getName();
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246 |
| } |
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247 |
| |
|
248 |
5148
| public void addField(String name, Class type)
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249 |
| { |
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250 |
5148
| CtClass ctType = convertClass(type);
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251 |
| |
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252 |
5148
| try
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253 |
| { |
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254 |
5148
| CtField field = new CtField(ctType, name, getCtClass());
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255 |
5148
| field.setModifiers(Modifier.PRIVATE);
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256 |
| |
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257 |
5148
| getCtClass().addField(field);
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258 |
| } |
|
259 |
| catch (CannotCompileException ex) |
|
260 |
| { |
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261 |
0
| throw new ApplicationRuntimeException(ServiceMessages.unableToAddField(
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262 |
| name, |
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263 |
| getCtClass(), |
|
264 |
| ex), ex); |
|
265 |
| } |
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266 |
| } |
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267 |
| |
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268 |
2441
| public boolean containsMethod( MethodSignature ms )
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|
269 |
| { |
|
270 |
2441
| return _methods.get( ms ) != null;
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271 |
| } |
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272 |
| |
|
273 |
10649
| public MethodFab addMethod(int modifiers, MethodSignature ms, String body)
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|
274 |
| { |
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275 |
10649
| if (_methods.get(ms) != null)
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276 |
1
| throw new ApplicationRuntimeException(ServiceMessages.duplicateMethodInClass(ms, this));
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277 |
| |
|
278 |
10648
| CtClass ctReturnType = convertClass(ms.getReturnType());
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279 |
| |
|
280 |
10648
| CtClass[] ctParameters = convertClasses(ms.getParameterTypes());
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281 |
10648
| CtClass[] ctExceptions = convertClasses(ms.getExceptionTypes());
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282 |
| |
|
283 |
10648
| CtMethod method = new CtMethod(ctReturnType, ms.getName(), ctParameters, getCtClass());
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|
284 |
| |
|
285 |
10648
| try
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|
286 |
| { |
|
287 |
10648
| method.setModifiers(modifiers);
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|
288 |
10648
| method.setBody(body);
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|
289 |
10647
| method.setExceptionTypes(ctExceptions);
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|
290 |
| |
|
291 |
10647
| getCtClass().addMethod(method);
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|
292 |
| } |
|
293 |
| catch (Exception ex) |
|
294 |
| { |
|
295 |
1
| throw new ApplicationRuntimeException(ServiceMessages.unableToAddMethod(
|
|
296 |
| ms, |
|
297 |
| getCtClass(), |
|
298 |
| ex), ex); |
|
299 |
| } |
|
300 |
| |
|
301 |
| |
|
302 |
| |
|
303 |
10647
| MethodFab result = new MethodFabImpl(getSource(), ms, method, body);
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|
304 |
| |
|
305 |
10647
| _methods.put(ms, result);
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|
306 |
| |
|
307 |
10647
| return result;
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|
308 |
| } |
|
309 |
| |
|
310 |
2
| public MethodFab getMethodFab(MethodSignature ms)
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|
311 |
| { |
|
312 |
2
| return (MethodFab) _methods.get(ms);
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|
313 |
| } |
|
314 |
| |
|
315 |
1087
| public void addConstructor(Class[] parameterTypes, Class[] exceptions, String body)
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|
316 |
| { |
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317 |
1087
| CtClass[] ctParameters = convertClasses(parameterTypes);
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|
318 |
1087
| CtClass[] ctExceptions = convertClasses(exceptions);
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319 |
| |
|
320 |
1087
| try
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|
321 |
| { |
|
322 |
1087
| CtConstructor constructor = new CtConstructor(ctParameters, getCtClass());
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|
323 |
1087
| constructor.setExceptionTypes(ctExceptions);
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324 |
1087
| constructor.setBody(body);
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325 |
| |
|
326 |
1086
| getCtClass().addConstructor(constructor);
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|
327 |
| |
|
328 |
1086
| _constructors.add(new AddedConstructor(parameterTypes, exceptions, body));
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|
329 |
| } |
|
330 |
| catch (Exception ex) |
|
331 |
| { |
|
332 |
1
| throw new ApplicationRuntimeException(ServiceMessages.unableToAddConstructor(
|
|
333 |
| getCtClass(), |
|
334 |
| ex), ex); |
|
335 |
| } |
|
336 |
| } |
|
337 |
| |
|
338 |
| } |