diff options
Diffstat (limited to 'sandbox/event/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/types/TypeTreeCreator.java')
| -rw-r--r-- | sandbox/event/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/types/TypeTreeCreator.java | 497 |
1 files changed, 0 insertions, 497 deletions
diff --git a/sandbox/event/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/types/TypeTreeCreator.java b/sandbox/event/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/types/TypeTreeCreator.java deleted file mode 100644 index e8441ed177..0000000000 --- a/sandbox/event/modules/binding-corba-runtime/src/main/java/org/apache/tuscany/sca/binding/corba/impl/types/TypeTreeCreator.java +++ /dev/null @@ -1,497 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ - -package org.apache.tuscany.sca.binding.corba.impl.types; - -import java.lang.annotation.Annotation; -import java.lang.reflect.Constructor; -import java.lang.reflect.Field; -import java.lang.reflect.Method; -import java.lang.reflect.Modifier; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.HashSet; -import java.util.List; -import java.util.Set; - -import org.apache.tuscany.sca.binding.corba.impl.exceptions.RequestConfigurationException; -import org.apache.tuscany.sca.binding.corba.meta.CorbaArray; -import org.apache.tuscany.sca.binding.corba.meta.CorbaUnionElement; -import org.apache.tuscany.sca.binding.corba.meta.CorbaUnionElementType; - -/** - * @version $Rev$ $Date$ - * Creator of types tree. - */ -public class TypeTreeCreator { - - /** - * Helps to determine if type is a primitive. - */ - private static List<Class<?>> primitives = new ArrayList<Class<?>>(); - - static { - primitives.add(boolean.class); - primitives.add(byte.class); - primitives.add(short.class); - primitives.add(int.class); - primitives.add(long.class); - primitives.add(double.class); - primitives.add(float.class); - primitives.add(char.class); - primitives.add(String.class); - primitives.add(Boolean.class); - primitives.add(Byte.class); - primitives.add(Short.class); - primitives.add(Integer.class); - primitives.add(Long.class); - primitives.add(Double.class); - primitives.add(Float.class); - primitives.add(Character.class); - } - - /** - * Creates class for given string argument. - * - * @param name name of type - * @return type - */ - private static Class<?> createClassFromString(String name) { - Class<?> result = null; - try { - if (name.length() == 1) { - // primitives - switch (name.charAt(0)) { - case 'Z': - result = boolean.class; - break; - case 'C': - result = char.class; - break; - case 'B': - result = byte.class; - break; - case 'S': - result = short.class; - break; - case 'I': - result = int.class; - break; - case 'J': - result = long.class; - break; - case 'F': - result = float.class; - break; - case 'D': - result = double.class; - break; - } - } else { - // class - name = name.substring(1, name.length() - 1); - result = Class.forName(name); - } - } catch (Exception e) { - e.printStackTrace(); - } - return result; - } - - /** - * Reduces dimension of array. - * - * @param forClass array class - * @return reduced array - */ - private static Class<?> reduceArrayDimension(Class<?> forClass) { - String name = forClass.getName(); - try { - String reduced = name.substring(1, name.length()); - if (reduced.startsWith("[")) { - // reduced class is still an array - return Class.forName(reduced); - } else { - // reduced class may be primitive or class - return createClassFromString(reduced); - } - } catch (ClassNotFoundException e) { - e.printStackTrace(); - } - return null; - } - - /** - * Return given array without first element - * - * @param array - * @return - */ - private static int[] removeFirstElement(int[] array) { - int[] result = new int[array.length - 1]; - System.arraycopy(array, 1, result, 0, result.length); - return result; - } - - /** - * Converts objects annotations to structure which will be used by this - * class - * - * @param notes - * @return - */ - private static AnnotationAttributes createAnnotationAttributes(Annotation[] notes) { - AnnotationAttributes attrs = new AnnotationAttributes(); - for (int i = 0; notes != null && i < notes.length; i++) { - if (notes[i].annotationType().equals(CorbaArray.class)) { - attrs.setCorbaArray(true); - attrs.setCorbaArrayLength(((CorbaArray)notes[i]).value()); - } - } - return attrs; - } - - /** - * Creates tree for given type. - * - * @param forClass - * @return type tree - */ - public static TypeTree createTypeTree(Class<?> forClass, Annotation[] notes) throws RequestConfigurationException { - TypeTree tree = new TypeTree(); - TypeTreeNode rootNode = null; - AnnotationAttributes attrs = createAnnotationAttributes(notes); - rootNode = inspectClassHierarchy(forClass, attrs, tree); - tree.setRootNode(rootNode); - return tree; - - } - - /** - * Recurrent method which builds type tree. - * - * @param forClass - * @param tree - * @return - */ - private static TypeTreeNode inspectClassHierarchy(Class<?> forClass, AnnotationAttributes attributes, TypeTree tree) - throws RequestConfigurationException { - - TypeTreeNode node = null; - node = createTypeNode(forClass, attributes); - - NodeType nodeType = node.getNodeType(); - TypeTreeNode[] children = null; - - if (nodeType.equals(NodeType.primitive)) { - // stop condition for recurrent method - } else if (nodeType.equals(NodeType.array)) { - Class<?> reduced = reduceArrayDimension(node.getJavaClass()); - children = new TypeTreeNode[1]; - int[] newLengths = removeFirstElement(attributes.getCorbaArrayLength()); - attributes.setCorbaArrayLength(newLengths); - children[0] = inspectClassHierarchy(reduced, attributes, tree); - } else if (nodeType.equals(NodeType.sequence)) { - // reducing sequence dimension - Class<?> reduced = reduceArrayDimension(node.getJavaClass()); - children = new TypeTreeNode[1]; - children[0] = inspectClassHierarchy(reduced, attributes, tree); - // System.arraycopy(src, srcPos, dest, destPos, length) - } else if (nodeType.equals(NodeType.struct) || nodeType.equals(NodeType.exception)) { - // inspect types for every structure member - Field[] fields = node.getJavaClass().getFields(); - children = new TypeTreeNode[fields.length]; - for (int i = 0; i < fields.length; i++) { - Class<?> field = fields[i].getType(); - AnnotationAttributes fAttrs = createAnnotationAttributes(fields[i].getAnnotations()); - TypeTreeNode child = inspectClassHierarchy(field, fAttrs, tree); - child.setName(fields[i].getName()); - children[i] = child; - } - } else if (nodeType.equals(NodeType.idl_enum)) { - - } else if (nodeType.equals(NodeType.union)) { - // inspect types for every structure member - Field[] fields = node.getJavaClass().getDeclaredFields(); - children = new TypeTreeNode[fields.length]; - for (int i = 0; i < fields.length; i++) { - Class<?> field = fields[i].getType(); - AnnotationAttributes fAttrs = createAnnotationAttributes(fields[i].getAnnotations()); - TypeTreeNode child = inspectClassHierarchy(field, fAttrs, tree); - child.setName(fields[i].getName()); - children[i] = child; - } - } else if (nodeType.equals(NodeType.reference)) { - // TODO: CORBA references - } - - node.setChildren(children); - return node; - } - - /** - * Creating and configuring TypeTreeNode for given class. - * - * @param forClass class - * @return node - * @throws RequestConfigurationException - */ - private static TypeTreeNode createTypeNode(Class<?> forClass, AnnotationAttributes attributes) - throws RequestConfigurationException { - TypeTreeNode node = new TypeTreeNode(); - if (forClass.isArray() && !attributes.isCorbaArray()) { - node.setNodeType(NodeType.sequence); - node.setJavaClass(forClass); - } else if (forClass.isArray() && attributes.isCorbaArray()) { - node.setNodeType(NodeType.array); - node.setJavaClass(forClass); - try { - // set the actual array size for further use by ArrayTypeHelper - node.setAttributes(attributes.getCorbaArrayLength()[0]); - } catch (ArrayIndexOutOfBoundsException e) { - RequestConfigurationException exc = - new RequestConfigurationException("Annotated array size doesn't match declared arrays size"); - throw exc; - } - } else if (primitives.contains(forClass)) { - node.setNodeType(NodeType.primitive); - node.setJavaClass(forClass); - node.setChildren(null); - } else if (forClass.isInterface()) { - node.setNodeType(NodeType.reference); - node.setJavaClass(forClass); - node.setChildren(null); - } else if (isStructType(forClass)) { - node.setNodeType(NodeType.struct); - node.setJavaClass(forClass); - } else if (isEnumType(forClass)) { - node.setNodeType(NodeType.idl_enum); - node.setJavaClass(forClass); - } else if (isUserException(forClass)) { - node.setNodeType(NodeType.exception); - node.setJavaClass(forClass); - } else if (isUnionType(forClass)) { - node.setNodeType(NodeType.union); - node.setJavaClass(forClass); - node.setAttributes(getUnionAttributes(forClass)); - } else { - RequestConfigurationException e = - new RequestConfigurationException("User defined type which cannot be handled: " + forClass - .getCanonicalName()); - throw e; - } - return node; - } - - /** - * Tells whether given class is structure - * - * @param forClass - * @return - */ - private static boolean isStructType(Class<?> forClass) { - int classMods = forClass.getModifiers(); - if (!Modifier.isFinal(classMods)) { - return false; - } - boolean areCtorsValid = false; - Class<?>[] fieldsTypes = null; - Constructor<?>[] ctors = forClass.getConstructors(); - /* - * Do we have 2 ctors and one of them is null ctor? - */ - if (ctors.length != 2) { - return false; - } - for (int i = 0; i < ctors.length; i++) { - Class<?>[] params = ctors[i].getParameterTypes(); - if (params.length == 0) { - areCtorsValid = true; - } else { - fieldsTypes = params; - } - } - if (!areCtorsValid) { - return false; - } - /* - * Are constructor args declared as class fields? - */ - Field[] fields = forClass.getFields(); - Set<Class<?>> fieldsSet = new HashSet<Class<?>>(Arrays.asList(fieldsTypes)); - for (int i = 0; i < fields.length && !fieldsSet.isEmpty(); i++) { - int mods = fields[i].getModifiers(); - if (Modifier.isPublic(mods) && !Modifier.isStatic(mods) && !Modifier.isFinal(mods)) { - fieldsSet.remove(fields[i].getType()); - } - - } - return fieldsSet.isEmpty(); - } - - /** - * Tells whether given class is enum - * - * @param forClass - * @return - */ - private static boolean isEnumType(Class<?> forClass) { - boolean isValueMethod = false; - boolean isFromIntMethod = false; - /* - * enum type should have value and from_int methods - */ - try { - Method valueMet = forClass.getMethod("value", new Class[] {}); - int modValueMet = valueMet.getModifiers(); - if (valueMet.getReturnType().equals(int.class) && Modifier.isPublic(modValueMet)) { - isValueMethod = true; - } - Method fromIntMet = forClass.getMethod("from_int", new Class[] {int.class}); - int modFromIntMet = fromIntMet.getModifiers(); - if ((fromIntMet.getReturnType().equals(forClass) && Modifier.isPublic(modFromIntMet) && Modifier - .isStatic(modFromIntMet))) { - isFromIntMethod = true; - } - } catch (NoSuchMethodException e) { - } - if (!isFromIntMethod || !isValueMethod) { - return false; - } - /* - * enum type should also contain minimum one pair of fields: EnumType - * field and int _field - */ - int enumCount = 0; - Field[] fields = forClass.getFields(); - for (int i = 0; i < fields.length; i++) { - if (fields[i].getType().equals(forClass)) { - int modifiers = fields[i].getModifiers(); - if (Modifier.isStatic(modifiers) && Modifier.isPublic(modifiers) && Modifier.isFinal(modifiers)) { - try { - Field field = forClass.getField("_" + fields[i].getName()); - if (field.getType().equals(int.class)) { - enumCount++; - } - } catch (NoSuchFieldException e) { - } - - } - } - } - return enumCount > 0; - } - - /** - * Tells whether given class is CORBA user exception - * - * @param forClass - * @return - */ - private static boolean isUserException(Class<?> forClass) { - do { - if (forClass.equals(Exception.class)) { - return true; - } else { - forClass = forClass.getSuperclass(); - } - } while (forClass != null && !forClass.equals(Object.class)); - return false; - } - - /** - * Tells whether given class is CORBA union. This method validates usage of - * unions annotations. - * - * @param forClass - * @return - * @throws RequestConfigurationException - */ - private static boolean isUnionType(Class<?> forClass) throws RequestConfigurationException { - int classMods = forClass.getModifiers(); - if (!Modifier.isFinal(classMods)) { - return false; - } - boolean atLeastOneOption = false; - boolean discriminatorPresent = false; - for (int i = 0; i < forClass.getDeclaredFields().length; i++) { - CorbaUnionElement note = forClass.getDeclaredFields()[i].getAnnotation(CorbaUnionElement.class); - if (note != null) { - int fieldMod = forClass.getDeclaredFields()[i].getModifiers(); - if (Modifier.isPrivate(fieldMod) && !Modifier.isFinal(fieldMod) && !Modifier.isStatic(fieldMod)) { - if (note.type().equals(CorbaUnionElementType.discriminator)) { - if (discriminatorPresent) { - throw new RequestConfigurationException( - "More than one discriminators declared on: " + forClass); - } - discriminatorPresent = true; - } else { - atLeastOneOption = true; - } - } else { - throw new RequestConfigurationException( - "Annotated union field should be private, not final and no static on class: " + forClass); - } - } - } - if (atLeastOneOption && !discriminatorPresent) { - throw new RequestConfigurationException("No discriminator annotation found on: " + forClass); - } else if (!atLeastOneOption && discriminatorPresent) { - throw new RequestConfigurationException("No union option found on: " + forClass); - } else if (discriminatorPresent && atLeastOneOption) { - return true; - } else { - return false; - } - } - - /** - * Gets union attributes - discriminator field name, option fields etc. This - * method relies that previously scanned class is valid (method isUnionType) - * - * @param forClass - * @return - * @throws RequestConfigurationException - */ - private static UnionAttributes getUnionAttributes(Class<?> forClass) throws RequestConfigurationException { - UnionAttributes attributes = new UnionAttributes(); - for (int i = 0; i < forClass.getDeclaredFields().length; i++) { - CorbaUnionElement note = forClass.getDeclaredFields()[i].getAnnotation(CorbaUnionElement.class); - if (note != null) { - if (note.type().equals(CorbaUnionElementType.discriminator)) { - attributes.setDiscriminatorName(forClass.getDeclaredFields()[i].getName()); - } else if (note.type().equals(CorbaUnionElementType.defaultOption)) { - attributes.setDefaultOptionName(forClass.getDeclaredFields()[i].getName()); - } else if (note.type().equals(CorbaUnionElementType.option)) { - if (attributes.getOptionsMapping().containsKey(note.optionNumber())) { - throw new RequestConfigurationException("In " + forClass - + ": field \"" - + forClass.getDeclaredFields()[i].getName() - + "\" uses already used option id: " - + note.optionNumber()); - } else { - attributes.getOptionsMapping().put(note.optionNumber(), - forClass.getDeclaredFields()[i].getName()); - } - } - } - } - return attributes; - } -} |