/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.relaxng;
import com.caucho.config.ConfigException;
import com.caucho.vfs.MergePath;
import com.caucho.vfs.Path;
import com.caucho.vfs.ReadStream;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import java.io.IOException;
import java.lang.ref.SoftReference;
import java.util.HashMap;
/**
* JARV Verifier factory.
*/
public class CompactVerifierFactoryImpl implements VerifierFactory {
private static HashMap<Path,SoftReference<Schema>> _schemaMap =
new HashMap<Path,SoftReference<Schema>>();
/**
* Reads the schema from the classpath.
*/
public static Schema compileFromResource(String schemaName)
throws SAXException, IOException
{
CompactVerifierFactoryImpl factory = new CompactVerifierFactoryImpl();
MergePath mp = new MergePath();
mp.addClassPath();
return factory.compileSchema(mp.lookup(schemaName));
}
/**
* Compile a schema.
*/
public static Schema compileFromPath(Path path)
throws SAXException, IOException
{
return new CompactVerifierFactoryImpl().compileSchema(path);
}
/**
* Compile a schema.
*/
public Schema compileSchema(Path path)
throws SAXException, IOException
{
String nativePath = path.getNativePath();
SoftReference<Schema> schemaRef = _schemaMap.get(path);
Schema schema = null;
if (schemaRef != null && (schema = schemaRef.get()) != null) {
// XXX: probably eventually add an isModified
return schema;
}
ReadStream is = path.openRead();
try {
InputSource source = new InputSource(is);
source.setSystemId(path.getUserPath());
schema = compileSchema(source);
if (schema != null)
_schemaMap.put(path, new SoftReference<Schema>(schema));
} finally {
is.close();
}
return schema;
}
/**
* Compile a schema.
*/
public Schema compileSchema(InputSource is)
throws SAXException, IOException
{
try {
CompactParser parser = new CompactParser();
parser.parse(is);
SchemaImpl schema = new SchemaImpl(parser.getGrammar());
schema.setFilename(is.getSystemId());
return schema;
} catch (SAXException e) {
throw e;
} catch (Exception e) {
throw ConfigException.create(e);
}
}
}