diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta2-RC3/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/SDOContextHelper.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta2-RC3/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/SDOContextHelper.java | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta2-RC3/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/SDOContextHelper.java b/sca-java-2.x/tags/2.0-Beta2-RC3/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/SDOContextHelper.java deleted file mode 100644 index 23063317e7..0000000000 --- a/sca-java-2.x/tags/2.0-Beta2-RC3/modules/databinding-sdo/src/main/java/org/apache/tuscany/sca/databinding/sdo/SDOContextHelper.java +++ /dev/null @@ -1,258 +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.databinding.sdo; - -import java.lang.reflect.Method; -import java.util.ArrayList; -import java.util.List; -import java.util.Set; - -import javax.xml.datatype.DatatypeFactory; -import javax.xml.namespace.QName; - -import org.apache.tuscany.sca.common.java.collection.LRUCache; -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.databinding.TransformationContext; -import org.apache.tuscany.sca.databinding.TransformationException; -import org.apache.tuscany.sca.databinding.util.DataTypeHelper; -import org.apache.tuscany.sca.extensibility.ClassLoaderContext; -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.interfacedef.util.XMLType; -import org.apache.tuscany.sdo.api.SDOUtil; - -import commonj.sdo.DataObject; -import commonj.sdo.Type; -import commonj.sdo.helper.HelperContext; -import commonj.sdo.helper.TypeHelper; -import commonj.sdo.impl.HelperProvider; - -/** - * Helper class to get TypeHelper from the context - * - * @version $Rev$ $Date$ - */ -public final class SDOContextHelper { - private static final LRUCache<Object, HelperContext> cache = new LRUCache<Object, HelperContext>(1024); - - private static ExtensionPointRegistry registry = null; - private static HelperContext defaultHelperContext; - - private SDOContextHelper() { - } - - /** - * Static method used to set the registry used to locate the SDO implementation provider - * MUST be called before using any other methods on this class - * @param theRegistry - */ - public static void setRegistry( ExtensionPointRegistry theRegistry ) { - registry = theRegistry; - } // end setRegistry - - public static HelperContext getHelperContext(TransformationContext context, boolean source) { - if (context == null) { - return getDefaultHelperContext(); - } - - HelperContext helperContext = null; - Operation op = source ? context.getSourceOperation() : context.getTargetOperation(); - if (op == null) { - DataType<?> dt = source ? context.getSourceDataType() : context.getTargetDataType(); - - helperContext = dt.getMetaData(HelperContext.class); - if (helperContext != null) { - return helperContext; - } - helperContext = SDOUtil.createHelperContext(); - boolean found = register(helperContext, dt); - if (!found) { - helperContext = getDefaultHelperContext(); - } - dt.setMetaData(HelperContext.class, helperContext); - return helperContext; - } else { - return getHelperContext(op); - } - - } - - public static HelperContext getHelperContext(Operation op) { - if (op == null) { - return getDefaultHelperContext(); - } - - HelperContext helperContext = op.getInputType().getMetaData(HelperContext.class); - - if (helperContext != null) { - return helperContext; - } - - // Use the default HelperContext until a type is registered later on - helperContext = getDefaultHelperContext(); - - /* - List<DataType> dataTypes = DataTypeHelper.getDataTypes(op, false); - boolean found = false; - for (DataType d : dataTypes) { - if (register(helperContext, d)) { - found = true; - } - } - if (!found) { - helperContext = getDefaultHelperContext(); - } - */ - op.getInputType().setMetaData(HelperContext.class, helperContext); - return helperContext; - } - - /** - * @param helperContext - * @param dataType - * @return - */ - private static boolean register(HelperContext helperContext, DataType dataType) { - if (dataType == null) { - return false; - } - Set<Class<?>> classes = DataTypeHelper.findClasses(dataType); - boolean found = false; - for (Class<?> cls : classes) { - found = register(helperContext, dataType.getPhysical()) || found; - } - return found; - } - - /** - * FIXME: [rfeng] This is a hack to get the factory out a SDO class - * @param helperContext - * @param javaType - */ - - public static boolean register(HelperContext helperContext, Class javaType) { - if (javaType == null || DataObject.class == javaType) { - return false; - } - try { - Type type = helperContext.getTypeHelper().getType(javaType); - return register(helperContext, type); - } catch (Exception e) { - throw new TransformationException(e); - } - } - - public static boolean register(HelperContext helperContext, Type type) { - if (type != null && (!type.isDataType())) { - try { - Method method = type.getClass().getMethod("getEPackage"); - Object factory = method.invoke(type, new Object[] {}); - method = factory.getClass().getMethod("register", HelperContext.class); - method.invoke(factory, new Object[] {helperContext}); - return true; - } catch (Exception e) { - e.printStackTrace(); - return false; - } - } else { - return false; - } - } - - public static HelperContext getDefaultHelperContext( ) { - // Return a chached value if available... - if( defaultHelperContext != null ) return defaultHelperContext; - - // Try to set up TCCL so that SDO Helper Provider service discovery works in OSGi - if( registry == null ) return null; - - ClassLoader oldTccl = - ClassLoaderContext.setContextClassLoader(SDOContextHelper.class.getClassLoader(), - registry.getServiceDiscovery(), - // SDO Helper Provider - "commonj.sdo.impl.HelperProvider" - ); - try { - // Load the HelperProvider (using the new TCCL) and get the default HelperContext - // cache the returned HelperContext... - ClassLoader tccl = Thread.currentThread().getContextClassLoader(); - HelperProvider.setDefaultInstance(tccl); - defaultHelperContext = HelperProvider.getDefaultContext(); - return defaultHelperContext; - } catch (Exception e ){ - e.printStackTrace(); - return null; - } finally { - if (oldTccl != null) { - Thread.currentThread().setContextClassLoader(oldTccl); - } - } // end try - } // end getDefaultHelperContext() - - public static QName getElement(TransformationContext context) { - if (context == null) { - return SDODataBinding.ROOT_ELEMENT; - } - DataType<?> dataType = context.getTargetDataType(); - Object logical = dataType.getLogical(); - QName elementName = null; - if (logical instanceof XMLType) { - XMLType xmlType = (XMLType)logical; - QName element = xmlType.getElementName(); - if (element != null) { - elementName = element; - } - } - if (elementName == null) { - // Try source type - dataType = context.getSourceDataType(); - logical = dataType.getLogical(); - if (logical instanceof XMLType) { - XMLType xmlType = (XMLType)logical; - QName element = xmlType.getElementName(); - if (element != null) { - elementName = element; - } - } - } - if (elementName != null) { - return elementName; - } else { - return SDODataBinding.ROOT_ELEMENT; - } - } - - public static String generateSchema(HelperContext context, Class<?>[] classes) { - TypeHelper typeHelper = context.getTypeHelper(); - List<Type> types = new ArrayList<Type>(); - for (Class<?> cls : classes) { - Type type = typeHelper.getType(cls); - if (type != null) { - types.add(type); - } - } - return generateSchema(context, types); - } - - public static String generateSchema(HelperContext context, List<Type> types) { - // FIXME: SDO throws IllegalArgumentException for types generated from existing XSDs - return context.getXSDHelper().generate(types); - } -} |