/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/metaobj/trunk/metaobj-impl/api-impl/src/java/org/sakaiproject/metaobj/utils/xml/SchemaFactory.java $
* $Id: SchemaFactory.java 120216 2013-02-18 19:44:04Z ottenhoff@longsight.com $
***********************************************************************************
*
* Copyright (c) 2004, 2005, 2006, 2008 The Sakai Foundation
*
* Licensed under the Educational Community 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.opensource.org/licenses/ECL-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.sakaiproject.metaobj.utils.xml;
import java.io.File;
import java.net.URL;
import java.util.Hashtable;
import org.jdom.Document;
import org.jdom.input.SAXBuilder;
import org.sakaiproject.metaobj.utils.xml.impl.SchemaNodeImpl;
public class SchemaFactory {
static private SchemaFactory schemaFactory = new SchemaFactory();
private Hashtable schemas = new Hashtable();
private SchemaFactory() {
}
public static SchemaFactory getInstance() {
return schemaFactory;
}
public SchemaNode getSchema(java.io.File in) {
if (schemas.get(in) != null) {
return (SchemaNode) schemas.get(in);
}
SAXBuilder builder = new SAXBuilder();
builder.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); // SAK-23245
try {
Document doc = builder.build(in);
SchemaNode node = new SchemaNodeImpl(doc, this, in);
schemas.put(in, node);
return node;
}
catch (Exception e) {
throw new SchemaInvalidException(e);
}
}
public SchemaNode getSchema(java.io.InputStream in) {
SAXBuilder builder = new SAXBuilder();
builder.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); // SAK-23245
try {
Document doc = builder.build(in);
SchemaNode node = new SchemaNodeImpl(doc, this, in);
return node;
}
catch (Exception e) {
throw new SchemaInvalidException(e);
}
}
public SchemaNode getSchema(java.io.InputStream in, java.lang.String systemId) {
if (schemas.get(systemId) != null) {
return (SchemaNode) schemas.get(systemId);
}
SAXBuilder builder = new SAXBuilder();
builder.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); // SAK-23245
try {
Document doc = builder.build(in, systemId);
SchemaNode node = new SchemaNodeImpl(doc, this, in);
schemas.put(systemId, node);
return node;
}
catch (Exception e) {
throw new SchemaInvalidException(e);
}
}
public SchemaNode getSchema(java.io.Reader characterStream, java.lang.String systemId) {
if (schemas.get(systemId) != null) {
return (SchemaNode) schemas.get(systemId);
}
SAXBuilder builder = new SAXBuilder();
builder.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); // SAK-23245
try {
Document doc = builder.build(characterStream, systemId);
SchemaNode node = new SchemaNodeImpl(doc, this, systemId);
schemas.put(systemId, node);
return node;
}
catch (Exception e) {
throw new SchemaInvalidException(e);
}
}
public SchemaNode getSchema(java.lang.String systemId) {
if (schemas.get(systemId) != null) {
return (SchemaNode) schemas.get(systemId);
}
SAXBuilder builder = new SAXBuilder();
builder.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); // SAK-23245
try {
Document doc = builder.build(systemId);
SchemaNode node = new SchemaNodeImpl(doc, this, systemId);
schemas.put(systemId, node);
return node;
}
catch (Exception e) {
throw new SchemaInvalidException(e);
}
}
public SchemaNode getSchema(java.net.URL url) {
if (schemas.get(url) != null) {
return (SchemaNode) schemas.get(url);
}
SAXBuilder builder = new SAXBuilder();
builder.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); // SAK-23245
try {
Document doc = builder.build(url);
SchemaNode node = new SchemaNodeImpl(doc, this, url);
schemas.put(url, node);
return node;
}
catch (Exception e) {
throw new SchemaInvalidException(e);
}
}
public SchemaNode getRelativeSchema(String schemaLocation, Object path) {
try {
if (path instanceof URL) {
URL urlPath = (URL) path;
URL schemaUrl = new URL(urlPath, schemaLocation);
return getSchema(schemaUrl);
}
else if (path instanceof File) {
File filePath = (File) path;
File schemaFile = new File(filePath.getParentFile(), schemaLocation);
return getSchema(schemaFile);
}
else {
URL urlPath = new URL(path.toString());
URL schemaUrl = new URL(urlPath, schemaLocation);
return getSchema(schemaUrl);
}
}
catch (Exception exp) {
throw new SchemaInvalidException(exp);
}
}
public void reload() {
schemas = new Hashtable();
}
}