/*
* @(#)$Id: DocumentTest.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* Licensed 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.xquery.type.node;
import javax.xml.xquery.XQException;
import xbird.xquery.dm.NodeKind;
import xbird.xquery.optim.RewriteInfo;
import xbird.xquery.type.ItemType;
/**
* document-node(E) matches any document node that contains
* exactly one element node, optionally accompanied by one or more comment
* and processing instruction nodes, if E is an ElementTest or SchemaElementTest
* that matches the element node.
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
*/
public class DocumentTest extends NodeType {
private static final long serialVersionUID = -8484678694422113208L;
public static final DocumentTest ANY_DOCUMENT = new DocumentTest();
private final ItemType nodeType;
public DocumentTest() {
this(null);
}
public DocumentTest(ItemType nodeType) {
super(NodeKind.DOCUMENT);
this.nodeType = nodeType;
}
public ItemType getNodeType() {
return nodeType;
}
@Override
public boolean acceptNodeType(NodeType expected) {
if(!(expected instanceof DocumentTest)) {
return false;
}
if(nodeType != null) {
ItemType targetNodeType = ((DocumentTest) expected).getNodeType();
if(!nodeType.accepts(targetNodeType)) {
return false;
}
}
return true;
}
@Override
public String toString() {
return "document-node(" + ((nodeType == null) ? "" : nodeType.toString()) + ")";
}
@Override
public int[] toQuery(RewriteInfo info, boolean isAttrStep) {
return null;
}
@Override
public int getXQJBaseType() throws XQException {
final ItemType basetype = nodeType;
if(basetype == null) {
throw new XQException("Illegal item kind: " + toString(), "err:XQJxxxx");
}
return basetype.getXQJBaseType();
}
}