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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.jackrabbit.spi.commons.name;
import java.util.ArrayList;
import javax.jcr.RepositoryException;
import org.apache.jackrabbit.spi.Name;
import org.apache.jackrabbit.spi.NameFactory;
import org.apache.jackrabbit.spi.Path;
import org.apache.jackrabbit.spi.PathFactory;
/**
* PathFactoryImpl...
*/
public class PathFactoryImpl implements PathFactory {
private static PathFactory FACTORY = new PathFactoryImpl();
private PathFactoryImpl() {}
public static PathFactory getInstance() {
return FACTORY;
}
//--------------------------------------------------------< PathFactory >---
/**
* @see PathFactory#create(Path, Path, boolean)
*/
public Path create(Path parent, Path relPath, boolean normalize) throws IllegalArgumentException, RepositoryException {
if (relPath.isAbsolute()) {
throw new IllegalArgumentException(
"relPath is not a relative path: " + relPath);
} else {
Path path = parent.resolve(relPath);
if (normalize) {
return path.getNormalizedPath();
} else {
return path;
}
}
}
/**
* @see PathFactory#create(Path, Name, boolean)
*/
public Path create(Path parent, Name name, boolean normalize) throws RepositoryException {
return create(parent, name, Path.INDEX_UNDEFINED, normalize);
}
/**
* @see PathFactory#create(Path, Name, int, boolean)
*/
public Path create(Path parent, Name name, int index, boolean normalize) throws IllegalArgumentException, RepositoryException {
if (RootPath.NAME.equals(name)) {
throw new IllegalArgumentException();
}
Path path = new NamePath(parent, name, index);
if (normalize) {
return path.getNormalizedPath();
} else {
return path;
}
}
/**
* @see PathFactory#create(Name)
*/
public Path create(Name name) throws IllegalArgumentException {
if (name != null) {
return create(name, Path.INDEX_UNDEFINED);
} else {
throw new IllegalArgumentException("PathFactory.create(null)");
}
}
/**
* @see PathFactory#create(Name, int)
*/
public Path create(Name name, int index) throws IllegalArgumentException {
if (name == null) {
throw new IllegalArgumentException("PathFactory.create(null, index");
} else if (index < Path.INDEX_UNDEFINED) {
throw new IllegalArgumentException(
"Index must not be negative: " + name + "[" + index + "]");
} else if (CurrentPath.NAME.equals(name)) {
if (index == Path.INDEX_UNDEFINED) {
return CurrentPath.CURRENT_PATH;
} else {
throw new IllegalArgumentException();
}
} else if (ParentPath.NAME.equals(name)) {
if (index == Path.INDEX_UNDEFINED) {
return ParentPath.PARENT_PATH;
} else {
throw new IllegalArgumentException();
}
} else if (RootPath.NAME.equals(name)) {
if (index == Path.INDEX_UNDEFINED) {
return RootPath.ROOT_PATH;
} else {
throw new IllegalArgumentException();
}
} else {
return new NamePath(null, name, index);
}
}
public Path create(Path.Element element) {
if (element.denotesCurrent()) {
return CurrentPath.CURRENT_PATH;
} else if (element.denotesIdentifier()) {
return new IdentifierPath(element.getIdentifier());
} else if (element.denotesName()) {
return new NamePath(null, element.getName(), element.getIndex());
} else if (element.denotesParent()) {
return ParentPath.PARENT_PATH;
} else if (element.denotesRoot()) {
return RootPath.ROOT_PATH;
} else {
throw new IllegalArgumentException(
"Unknown path element type: " + element);
}
}
/**
* @see PathFactory#create(org.apache.jackrabbit.spi.Path.Element[])
*/
public Path create(Path.Element[] elements) throws IllegalArgumentException {
Path path = null;
for (Path.Element element : elements) {
if (element.denotesCurrent()) {
path = new CurrentPath(path);
} else if (element.denotesIdentifier()) {
if (path != null) {
throw new IllegalArgumentException();
}
path = new IdentifierPath(element.getIdentifier());
} else if (element.denotesName()) {
path = new NamePath(path, element.getName(), element.getIndex());
} else if (element.denotesParent()) {
if (path != null && path.isAbsolute() && path.getDepth() == 0) {
throw new IllegalArgumentException();
}
path = new ParentPath(path);
} else if (element.denotesRoot()) {
if (path != null) {
throw new IllegalArgumentException();
}
path = RootPath.ROOT_PATH;
}
}
return path;
}
/**
* @see PathFactory#create(String)
*/
public Path create(String pathString) throws IllegalArgumentException {
if (pathString == null || "".equals(pathString)) {
throw new IllegalArgumentException("No Path literal specified");
}
// split into path elements
int lastPos = 0;
int pos = pathString.indexOf(Path.DELIMITER);
ArrayList list = new ArrayList();
while (lastPos >= 0) {
Path.Element elem;
if (pos >= 0) {
elem = createElementFromString(pathString.substring(lastPos, pos));
lastPos = pos + 1;
pos = pathString.indexOf(Path.DELIMITER, lastPos);
} else {
elem = createElementFromString(pathString.substring(lastPos));
lastPos = -1;
}
list.add(elem);
}
return create(list.toArray(new Path.Element[list.size()]));
}
/**
* @see PathFactory#createElement(Name)
*/
public Path.Element createElement(Name name) throws IllegalArgumentException {
if (name == null) {
throw new IllegalArgumentException("name must not be null");
} else if (name.equals(ParentPath.NAME)) {
return ParentPath.PARENT_PATH;
} else if (name.equals(CurrentPath.NAME)) {
return CurrentPath.CURRENT_PATH;
} else if (name.equals(RootPath.NAME)) {
return RootPath.ROOT_PATH;
} else {
return new NamePath(null, name, Path.INDEX_UNDEFINED);
}
}
/**
* @see PathFactory#createElement(Name, int)
*/
public Path.Element createElement(Name name, int index) throws IllegalArgumentException {
if (index < Path.INDEX_UNDEFINED) {
throw new IllegalArgumentException(
"The index may not be negative: " + name + "[" + index + "]");
} else if (name == null) {
throw new IllegalArgumentException("The name must not be null");
} else if (name.equals(ParentPath.NAME)
|| name.equals(CurrentPath.NAME)
|| name.equals(RootPath.NAME)) {
throw new IllegalArgumentException(
"Special path elements (root, '.' and '..') can not have an explicit index: "
+ name + "[" + index + "]");
} else {
return new NamePath(null, name, index);
}
}
public Path.Element createElement(String identifier) throws IllegalArgumentException {
if (identifier == null) {
throw new IllegalArgumentException("The id must not be null.");
} else {
return new IdentifierPath(identifier);
}
}
/**
* Create an element from the element string
*/
private Path.Element createElementFromString(String elementString) {
if (elementString == null) {
throw new IllegalArgumentException("null PathElement literal");
}
if (elementString.equals(RootPath.NAME.toString())) {
return RootPath.ROOT_PATH;
} else if (elementString.equals(CurrentPath.CURRENT_PATH.getString())) {
return CurrentPath.CURRENT_PATH;
} else if (elementString.equals(ParentPath.PARENT_PATH.getString())) {
return ParentPath.PARENT_PATH;
} else if (elementString.startsWith("[") && elementString.endsWith("]") && elementString.length() > 2) {
return new IdentifierPath(
elementString.substring(1, elementString.length()-1));
}
NameFactory factory = NameFactoryImpl.getInstance();
int pos = elementString.indexOf('[');
if (pos == -1) {
Name name = factory.create(elementString);
return new NamePath(null, name, Path.INDEX_UNDEFINED);
}
Name name = factory.create(elementString.substring(0, pos));
int pos1 = elementString.indexOf(']');
if (pos1 == -1) {
throw new IllegalArgumentException("invalid PathElement literal: " + elementString + " (missing ']')");
}
try {
int index = Integer.valueOf(elementString.substring(pos + 1, pos1));
if (index < 1) {
throw new IllegalArgumentException("invalid PathElement literal: " + elementString + " (index is 1-based)");
}
return new NamePath(null, name, index);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("invalid PathElement literal: " + elementString + " (" + e.getMessage() + ")");
}
}
/**
* @see PathFactory#getCurrentElement()
*/
public Path.Element getCurrentElement() {
return CurrentPath.CURRENT_PATH;
}
/**
* @see PathFactory#getParentElement()
*/
public Path.Element getParentElement() {
return ParentPath.PARENT_PATH;
}
/**
* @see PathFactory#getRootElement()
*/
public Path.Element getRootElement() {
return RootPath.ROOT_PATH;
}
/**
* @see PathFactory#getRootPath()
*/
public Path getRootPath() {
return RootPath.ROOT_PATH;
}
}
