com.jaspersoft.jasperserver.api.engine.jasperreports.util.repo.RepositoryConnection.java Source code

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Here is the source code for com.jaspersoft.jasperserver.api.engine.jasperreports.util.repo.RepositoryConnection.java

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/*
 * Copyright (C) 2005 - 2014 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com.
 *
 * Unless you have purchased  a commercial license agreement from Jaspersoft,
 * the following license terms  apply:
 *
 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero General Public License  as
 * published by the Free Software Foundation, either version 3 of  the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero  General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public  License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.jaspersoft.jasperserver.api.engine.jasperreports.util.repo;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.jaspersoft.jasperserver.api.engine.jasperreports.util.RepositoryContext;
import com.jaspersoft.jasperserver.api.metadata.common.domain.FileResource;
import com.jaspersoft.jasperserver.api.metadata.common.domain.FileResourceData;
import com.jaspersoft.jasperserver.api.metadata.common.domain.Folder;
import com.jaspersoft.jasperserver.api.metadata.common.domain.ResourceContainer;
import com.jaspersoft.jasperserver.api.metadata.common.service.JSResourceNotFoundException;
import com.jaspersoft.jasperserver.api.metadata.common.service.RepositoryService;

/**
 * @author Lucian Chirita (lucianc@users.sourceforge.net)
 * @version $Id: RepositoryConnection.java 47331 2014-07-18 09:13:06Z kklein $
 */
public class RepositoryConnection extends URLConnection {
    private static final Log log = LogFactory.getLog(RepositoryConnection.class);

    private final RepositoryContext repositoryContext;

    public RepositoryConnection(RepositoryContext repository, URL url) {
        super(url);

        this.repositoryContext = repository;
    }

    public void connect() throws IOException {
        connected = true;
    }

    public InputStream getInputStream() throws IOException {
        try {
            InputStream data = null;
            String path = url.getPath();
            if (!path.startsWith(Folder.SEPARATOR)) {
                ResourceContainer reportUnit = repositoryContext.getReportUnit();
                FileResource resource = null;
                if (reportUnit != null) {
                    resource = reportUnit.getResourceLocal(path);
                }

                if (resource == null || !resource.hasData()) {
                    path = repositoryContext.getContextURI() + Folder.SEPARATOR + path;
                } else {
                    if (log.isDebugEnabled()) {
                        log.debug("Loading resource \"" + resource.getName() + "\" from in-memory report unit");
                    }
                    data = resource.getDataStream();
                    if (resource.getFileType().equals(FileResource.TYPE_JRXML)) {
                        data = repositoryContext.getCompiledReportProvider()
                                .getCompiledReport(repositoryContext.getExecutionContext(), data);//FIXME not currently used, but should do autoUpdateJRXMLResource
                    }
                }
            }

            if (data == null) {
                if (log.isDebugEnabled()) {
                    log.debug("Loading resource \"" + path + "\" from repository");
                }

                RepositoryService repository = repositoryContext.getRepository();
                FileResource resource = (FileResource) repository
                        .getResource(repositoryContext.getExecutionContext(), path, FileResource.class);
                while (resource != null && resource.isReference()) {
                    resource = (FileResource) repository.getResource(repositoryContext.getExecutionContext(),
                            resource.getReferenceURI(), FileResource.class);
                }

                if (resource == null) {
                    throw new IOException("Repository file resource " + path + " could not be loaded");
                }

                if (resource.getFileType().equals(FileResource.TYPE_JRXML)) {
                    data = repositoryContext.getCompiledReportProvider()
                            .getCompiledReport(repositoryContext.getExecutionContext(), path);
                } else {
                    FileResourceData resourceData = repository
                            .getResourceData(repositoryContext.getExecutionContext(), path);
                    data = resourceData.getDataStream();
                }
            }

            return data;
        } catch (JSResourceNotFoundException e) {
            throw new IOException(e.getMessage());
        }
    }
}