Created
May 16, 2013 13:17
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Merged OObjectMethodFilter
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| import com.orientechnologies.common.log.OLogManager; | |
| import com.orientechnologies.orient.object.enhancement.OObjectEntitySerializer; | |
| import javassist.util.proxy.MethodFilter; | |
| import java.lang.annotation.Annotation; | |
| import java.lang.reflect.Field; | |
| import java.lang.reflect.Method; | |
| public class OObjectMethodFilter implements MethodFilter { | |
| protected boolean isScalaClass(Class<?> clz) { | |
| Annotation[] annotations = clz.getDeclaredAnnotations(); | |
| for (Annotation a : annotations) { | |
| if ("scala.reflect.ScalaSignature".contains(a.annotationType().getName()) || "scala.reflect.ScalaLongSignature".contains(a.getClass().getName())) { | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| protected String getScalaFieldName(Class<?> clz, Method m) { | |
| String name = m.getName(); | |
| Field[] fields = clz.getDeclaredFields(); | |
| for (Field field : fields) { | |
| if (name.equals(field.getName() + "_$eq")) { | |
| return field.getName(); | |
| } else if (name.equals(field.getName())) { | |
| return field.getName(); | |
| } | |
| } | |
| return null; | |
| } | |
| public boolean isHandled(Method m) { | |
| String name = m.getName(); | |
| Class<?> clz = m.getDeclaringClass(); | |
| if (!isScalaClass(clz)) { | |
| return isHandledInJava(m); | |
| } else { | |
| return getScalaFieldName(clz, m) != null; | |
| } | |
| } | |
| public String getFieldName(Method m) { | |
| String name = getJavaFieldName(m); | |
| Class<?> clz = m.getDeclaringClass(); | |
| if (isScalaClass(clz) && name == null) { | |
| return getScalaFieldName(clz, m); | |
| } | |
| return null; | |
| } | |
| public boolean isSetterMethod(String fieldName, Method m) throws SecurityException, NoSuchFieldException { | |
| return isJavaSetterMethod(fieldName, m) || fieldName.endsWith("_$eq") == true; //To change body of overridden methods use File | Settings | File Templates. | |
| } | |
| public boolean isGetterMethod(String fieldName, Method m) throws SecurityException, NoSuchFieldException { | |
| Class<?> clz = m.getDeclaringClass(); | |
| return isJavaGetterMethod(fieldName, m) || (isScalaClass(clz) && fieldName.equals(m.getName())); | |
| } | |
| public boolean isHandledInJava(final Method m) { | |
| final String methodName = m.getName(); | |
| final String fieldName = getFieldName(m); | |
| if (fieldName == null) | |
| return false; | |
| try { | |
| if (!OObjectEntitySerializer.isClassField(m.getDeclaringClass(), fieldName)) | |
| return false; | |
| return (isSetterMethod(methodName, m) || isGetterMethod(methodName, m)); | |
| } catch (NoSuchFieldException nsfe) { | |
| OLogManager.instance().warn(this, "Error handling the method %s in class %s", nsfe, m.getName(), | |
| m.getDeclaringClass().getName()); | |
| return false; | |
| } catch (SecurityException se) { | |
| OLogManager.instance().warn(this, "", se, m.getName(), m.getDeclaringClass().getName()); | |
| return false; | |
| } | |
| } | |
| public String getJavaFieldName(final Method m) { | |
| final String methodName = m.getName(); | |
| if (methodName.startsWith("get")) | |
| return getFieldName(methodName, "get"); | |
| else if (methodName.startsWith("set")) | |
| return getFieldName(methodName, "set"); | |
| else if (methodName.startsWith("is")) | |
| return getFieldName(methodName, "is"); | |
| // NO FIELD | |
| return null; | |
| } | |
| protected String getFieldName(final String methodName, final String prefix) { | |
| final StringBuffer fieldName = new StringBuffer(); | |
| fieldName.append(Character.toLowerCase(methodName.charAt(prefix.length()))); | |
| fieldName.append(methodName.substring(prefix.length() + 1)); | |
| return fieldName.toString(); | |
| } | |
| public boolean isJavaSetterMethod(final String fieldName, final Method m) throws SecurityException, NoSuchFieldException { | |
| if (!fieldName.startsWith("set") || !checkIfFirstCharAfterPrefixIsUpperCase(fieldName, "set")) | |
| return false; | |
| if (m.getParameterTypes() != null && m.getParameterTypes().length != 1) | |
| return false; | |
| return !OObjectEntitySerializer.isTransientField(m.getDeclaringClass(), getFieldName(m)); | |
| } | |
| public boolean isJavaGetterMethod(String fieldName, Method m) throws SecurityException, NoSuchFieldException { | |
| int prefixLength; | |
| if (fieldName.startsWith("get") && checkIfFirstCharAfterPrefixIsUpperCase(fieldName, "get")) | |
| prefixLength = "get".length(); | |
| else if (fieldName.startsWith("is") && checkIfFirstCharAfterPrefixIsUpperCase(fieldName, "is")) | |
| prefixLength = "is".length(); | |
| else | |
| return false; | |
| if (m.getParameterTypes() != null && m.getParameterTypes().length > 0) | |
| return false; | |
| if (fieldName.length() <= prefixLength) | |
| return false; | |
| return !OObjectEntitySerializer.isTransientField(m.getDeclaringClass(), getFieldName(m)); | |
| } | |
| private boolean checkIfFirstCharAfterPrefixIsUpperCase(String methodName, String prefix) { | |
| return methodName.length() > prefix.length() ? Character.isUpperCase(methodName.charAt(prefix.length())) : false; | |
| } | |
| } |
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