/*
* Copyright (c) 2005, 2006, 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.xsom.impl.scd;
import com.sun.xml.internal.xsom.XSAnnotation;
import com.sun.xml.internal.xsom.XSAttGroupDecl;
import com.sun.xml.internal.xsom.XSAttributeDecl;
import com.sun.xml.internal.xsom.XSAttributeUse;
import com.sun.xml.internal.xsom.XSComplexType;
import com.sun.xml.internal.xsom.XSComponent;
import com.sun.xml.internal.xsom.XSContentType;
import com.sun.xml.internal.xsom.XSElementDecl;
import com.sun.xml.internal.xsom.XSFacet;
import com.sun.xml.internal.xsom.XSIdentityConstraint;
import com.sun.xml.internal.xsom.XSModelGroup;
import com.sun.xml.internal.xsom.XSModelGroupDecl;
import com.sun.xml.internal.xsom.XSNotation;
import com.sun.xml.internal.xsom.XSParticle;
import com.sun.xml.internal.xsom.XSSchema;
import com.sun.xml.internal.xsom.XSSimpleType;
import com.sun.xml.internal.xsom.XSWildcard;
import com.sun.xml.internal.xsom.XSXPath;
import com.sun.xml.internal.xsom.visitor.XSFunction;
import java.util.Iterator;
/**
* Partial default implementation of {@link Axis}.
*
* <p>
* {@link XSParticle}s are skipped in SCD, so this class compensates that.
* For example, when we are considering a path from {@link XSComplexType},
* we need to also consider a path from its content type particle (if any.)
*
* @author Kohsuke Kawaguchi
*/
abstract class AbstractAxisImpl<T extends XSComponent> implements Axis<T>, XSFunction<Iterator<T>> {
/**
* Creates a singleton list.
*/
protected final Iterator<T> singleton(T t) {
return Iterators.singleton(t);
}
protected final Iterator<T> union(T... items) {
return new Iterators.Array<T>(items);
}
protected final Iterator<T> union(Iterator<? extends T> first, Iterator<? extends T> second) {
return new Iterators.Union<T>(first,second);
}
public Iterator<T> iterator(XSComponent contextNode) {
return contextNode.apply(this);
}
/**
* Gets the prefix of the axis, like "foo::".
*/
public String getName() {
return toString();
}
/**
* Default implementation that simply delegate sto {@link #iterator(XSComponent)}
*/
public Iterator<T> iterator(Iterator<? extends XSComponent> contextNodes) {
return new Iterators.Map<T,XSComponent>(contextNodes) {
protected Iterator<? extends T> apply(XSComponent u) {
return iterator(u);
}
};
}
public boolean isModelGroup() {
return false;
}
public Iterator<T> annotation(XSAnnotation ann) {
return empty();
}
public Iterator<T> attGroupDecl(XSAttGroupDecl decl) {
return empty();
}
public Iterator<T> attributeDecl(XSAttributeDecl decl) {
return empty();
}
public Iterator<T> attributeUse(XSAttributeUse use) {
return empty();
}
public Iterator<T> complexType(XSComplexType type) {
// compensate particle
XSParticle p = type.getContentType().asParticle();
if(p!=null)
return particle(p);
else
return empty();
}
public Iterator<T> schema(XSSchema schema) {
return empty();
}
public Iterator<T> facet(XSFacet facet) {
return empty();
}
public Iterator<T> notation(XSNotation notation) {
return empty();
}
public Iterator<T> identityConstraint(XSIdentityConstraint decl) {
return empty();
}
public Iterator<T> xpath(XSXPath xpath) {
return empty();
}
public Iterator<T> simpleType(XSSimpleType simpleType) {
return empty();
}
public Iterator<T> particle(XSParticle particle) {
return empty();
}
public Iterator<T> empty(XSContentType empty) {
return empty();
}
public Iterator<T> wildcard(XSWildcard wc) {
return empty();
}
public Iterator<T> modelGroupDecl(XSModelGroupDecl decl) {
return empty();
}
public Iterator<T> modelGroup(XSModelGroup group) {
// compensate for particles that are ignored in SCD
return new Iterators.Map<T,XSParticle>(group.iterator()) {
protected Iterator<? extends T> apply(XSParticle p) {
return particle(p);
}
};
}
public Iterator<T> elementDecl(XSElementDecl decl) {
return empty();
}
/**
* Returns an empty list.
*/
protected final Iterator<T> empty() {
return Iterators.empty();
}
}