org.betaconceptframework.astroboa.engine.definition.RepositoryEntityResolver.java Source code

Introduction

Here is the source code for org.betaconceptframework.astroboa.engine.definition.RepositoryEntityResolver.java

Source

/*
 * Copyright (C) 2005-2012 BetaCONCEPT Limited
 *
 * This file is part of Astroboa.
 *
 * Astroboa 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 3 of the License, or
 * (at your option) any later version.
 *
 * Astroboa 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Astroboa.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.betaconceptframework.astroboa.engine.definition;

import java.io.ByteArrayInputStream;
import java.io.IOException;

import javax.xml.XMLConstants;

import org.apache.commons.lang.StringUtils;
import org.betaconceptframework.astroboa.engine.definition.xsom.EntityResolverForBuiltInSchemas;
import org.betaconceptframework.astroboa.engine.jcr.dao.ContentDefinitionDao;
import org.betaconceptframework.astroboa.util.CmsConstants;
import org.springframework.beans.factory.annotation.Autowired;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * Entity Resolver for REPOSITORY schemas defined in a repository. 
 * 
 * @author Gregory Chomatas (gchomatas@betaconcept.com)
 * @author Savvas Triantafyllou (striantafyllou@betaconcept.com)
 * 
 */
public class RepositoryEntityResolver implements EntityResolver {

    @Autowired
    private ContentDefinitionDao contentDefinitionDao;

    @Autowired
    private EntityResolverForBuiltInSchemas entityResolverForBuiltInSchemas;

    @Override
    public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {

        if (XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI.equals(systemId) || XMLConstants.XML_NS_URI.equals(systemId)
                || CmsConstants.XML_SCHEMA_LOCATION.equals(systemId)
                || CmsConstants.XML_SCHEMA_DTD_LOCATION.equals(systemId)) {
            return entityResolverForBuiltInSchemas.resolveXmlSchemaRelatedToW3C(publicId, systemId);
        }

        byte[] schema = getSchema(systemId);

        if (schema == null) {
            return null;
        }

        InputSource is = new InputSource(new ByteArrayInputStream(schema));

        is.setSystemId(systemId);
        is.setPublicId(publicId);

        return is;

    }

    private byte[] getSchema(String systemId) {
        if (StringUtils.isBlank(systemId)) {
            return null;
        }

        //We are only interested in content type name or path.
        String schemaFilename = systemId;

        //We expect URL of the form
        //http://<server>/resource-api/<repository-id>/model/multilingualStringPropertyType?output=xsd
        //Definition name is located after the last forward slash
        if (schemaFilename.contains(CmsConstants.FORWARD_SLASH)) {
            schemaFilename = StringUtils.substringAfterLast(schemaFilename, CmsConstants.FORWARD_SLASH);
        }

        if (schemaFilename.contains("?")) {
            schemaFilename = StringUtils.substringBefore(schemaFilename, "?");
        }

        byte[] schema = contentDefinitionDao.getXMLSchemaFileForDefinition(schemaFilename);

        if (schema == null || schema.length == 0) {
            return null;
        }

        return schema;
    }

}