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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.impl;
import org.apache.tuscany.sca.interfacedef.DataType;
/**
* 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 semantially 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 $Rev$ $Date$
*/
public class DataTypeImpl<L> implements DataType<L> {
private boolean unresolved = true;
private String dataBinding;
private Class physical;
private L logical;
/**
* Construct a data type specifying the physical and logical types.
*
* @param physical the physical class used by the runtime
* @param logical the logical type
* @see #getLogical()
*/
public DataTypeImpl(Class physical, L logical) {
this.physical = physical;
this.logical = logical;
}
public DataTypeImpl(String dataBinding, Class physical, L logical) {
this.dataBinding = dataBinding;
this.physical = physical;
this.logical = logical;
}
/**
* Returns the physical type used by the runtime.
*
* @return the physical type used by the runtime
*/
public Class getPhysical() {
return physical;
}
/**
* 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 java.lang.reflect.Type identifies a Java type by name and
* ClassLoader; this includes Java Classes as they are specializations of
* Type</li>
* <li>a javax.xml.namespace.QName identifies an XML type by local name and
* namespace</li>
* </ul>
*
* @return the logical type name
*/
public L getLogical() {
return logical;
}
public String getDataBinding() {
return dataBinding;
}
/**
* @param dataBinding the dataBinding to set
*/
public void setDataBinding(String dataBinding) {
this.dataBinding = dataBinding;
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append(physical).append(" ").append(dataBinding).append(" ").append(logical);
return sb.toString();
}
@SuppressWarnings("unchecked")
@Override
public Object clone() throws CloneNotSupportedException {
DataTypeImpl copy = (DataTypeImpl)super.clone();
return copy;
}
/**
* @param logical the logical to set
*/
public void setLogical(L logical) {
this.logical = logical;
}
@Override
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((dataBinding == null) ? 0 : dataBinding.hashCode());
result = PRIME * result + ((logical == null) ? 0 : logical.hashCode());
result = PRIME * result + ((physical == null) ? 0 : physical.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final DataTypeImpl other = (DataTypeImpl)obj;
if (dataBinding == null) {
if (other.dataBinding != null) {
return false;
}
} else if (!dataBinding.equals(other.dataBinding)) {
return false;
}
if (logical == null) {
if (other.logical != null) {
return false;
}
} else if (!logical.equals(other.logical)) {
return false;
}
if (physical == null) {
if (other.physical != null) {
return false;
}
} else if (!physical.equals(other.physical)) {
return false;
}
return true;
}
/**
* @return the unresolved
*/
public boolean isUnresolved() {
return unresolved;
}
/**
* @param unresolved the unresolved to set
*/
public void setUnresolved(boolean unresolved) {
this.unresolved = unresolved;
}
/**
* @param physical the physical to set
*/
public void setPhysical(Class physical) {
this.physical = physical;
}
}
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