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/*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.xml.internal.bind.api;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.Collection;
import javax.xml.namespace.QName;
/**
* A reference to a JAXB-bound type.
*
* <p>
* <b>Subject to change without notice</b>.
*
* @since 2.0 EA1
* @author Kohsuke Kawaguchi
*/
public final class TypeReference {
/**
* The associated XML element name that the JAX-RPC uses with this type reference.
*
* Always non-null. Strings are interned.
*/
public final QName tagName;
/**
* The Java type that's being referenced.
*
* Always non-null.
*/
public final Type type;
/**
* The annotations associated with the reference of this type.
*
* Always non-null.
*/
public final Annotation[] annotations;
public TypeReference(QName tagName, Type type, Annotation... annotations) {
if(tagName==null || type==null || annotations==null) {
String nullArgs = "";
if(tagName == null) nullArgs = "tagName";
if(type == null) nullArgs += (nullArgs.length() > 0 ? ", type" : "type");
if(annotations == null) nullArgs += (nullArgs.length() > 0 ? ", annotations" : "annotations");
Messages.ARGUMENT_CANT_BE_NULL.format(nullArgs);
throw new IllegalArgumentException(Messages.ARGUMENT_CANT_BE_NULL.format(nullArgs));
}
this.tagName = new QName(tagName.getNamespaceURI().intern(), tagName.getLocalPart().intern(), tagName.getPrefix());
this.type = type;
this.annotations = annotations;
}
/**
* Finds the specified annotation from the array and returns it.
* Null if not found.
*/
public <A extends Annotation> A get( Class<A> annotationType ) {
for (Annotation a : annotations) {
if(a.annotationType()==annotationType)
return annotationType.cast(a);
}
return null;
}
/**
* Creates a {@link TypeReference} for the item type,
* if this {@link TypeReference} represents a collection type.
* Otherwise returns an identical type.
*/
public TypeReference toItemType() {
// if we are to reinstitute this check, check JAXB annotations only
// assert annotations.length==0; // not designed to work with adapters.
Type base = Utils.REFLECTION_NAVIGATOR.getBaseClass(type, Collection.class);
if(base==null)
return this; // not a collection
return new TypeReference(tagName, Utils.REFLECTION_NAVIGATOR.getTypeArgument(base,0));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
TypeReference that = (TypeReference) o;
if (!Arrays.equals(annotations, that.annotations)) return false;
if (!tagName.equals(that.tagName)) return false;
if (!type.equals(that.type)) return false;
return true;
}
@Override
public int hashCode() {
int result = tagName.hashCode();
result = 31 * result + type.hashCode();
result = 31 * result + Arrays.hashCode(annotations);
return result;
}
}
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