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/*
* 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.interfacedef;
import java.lang.reflect.Type;
/**
* Representation of the type of data associated with an operation. Data is
* represented in two forms: the physical form used by the runtime and a logical
* form used by the assembly. The physical form is a Java Type because the
* runtime is written in Java. This may be the same form used by the application
* but it may not; for example, an application that is performing stream
* processing may want a physical form such as an
* {@link java.io.InputStream InputStream} to semantically operate on application
* data such as a purchase order. The logical description is that used by the
* assembly model and is an identifier into some well-known type space; examples
* may be a Java type represented by its Class or an XML type represented by its
* QName. Every data type may also contain metadata describing the expected
* data; for example, it could specify a preferred data binding technology or
* the size of a typical instance.
*
* @version $Rev$ $Date$
* @tuscany.spi.extension.asclient
*/
public interface DataType<L> extends Cloneable {
/**
* Set the java type for the data
* @param cls
*/
void setPhysical(Class<?> cls);
/**
* Returns the physical type used by the runtime.
*
* @return the physical type used by the runtime
*/
Class<?> getPhysical();
/**
* Get the java generic type
* @return The java generic type
*/
Type getGenericType();
/**
* Set the java generic type
* @param genericType
*/
void setGenericType(Type genericType);
/**
* Returns the logical identifier used by the assembly. The type of this
* value identifies the logical type system in use. Known values are:
* <ul>
* <li>a Class identifies a Java type by name and
* ClassLoader; this includes Java Classes as they are specializations of
* Type</li>
* <li>a XMLType identifies an XML type by local name and
* namespace</li>
* </ul>
*
* @return the logical type name
*/
L getLogical();
/**
* Get the databinding for the given data type
* @return the databinding
*/
String getDataBinding();
/**
* Set the databinding for the given data type
* @param dataBinding the dataBinding to set
*/
void setDataBinding(String dataBinding);
/**
* Clone a data type
* @return The cloned data type
* @throws CloneNotSupportedException
*/
Object clone() throws CloneNotSupportedException;
/**
* Set the logical type of the data type
* @param logical the logical to set
*/
void setLogical(L logical);
/**
* Get the databinding-specific metadata
* @param type The java type of the metadata
* @return the databinding-specific metadata
*/
<T> T getMetaData(Class<T> type);
/**
* Set the databinding-specific metadata
* @param type The java type of the metadata
* @param metaData the databinding-specific metadata, such as SDO's commonj.sdo.Type or
* JAXB's javax.xml.bind.JAXBContext
*/
<T> void setMetaData(Class<T> type, T metaData);
}
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