com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoFileResource.java Source code

Introduction

Here is the source code for com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoFileResource.java

Source

/*
 * 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.metadata.common.service.impl.hibernate.persistent;

import java.sql.Blob;
import java.sql.SQLException;

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

import com.jaspersoft.jasperserver.api.JSException;
import com.jaspersoft.jasperserver.api.JSExceptionWrapper;
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.Resource;
import com.jaspersoft.jasperserver.api.metadata.common.domain.util.ComparableBlob;
import com.jaspersoft.jasperserver.api.metadata.common.service.ResourceFactory;
import com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.ReferenceResolver;

/**
 * @author Lucian Chirita (lucianc@users.sourceforge.net)
 * @version $Id: RepoFileResource.java 47331 2014-07-18 09:13:06Z kklein $
 * 
 * @hibernate.joined-subclass table="file_resource"
 * @hibernate.joined-subclass-key column="id"
 */
public class RepoFileResource extends RepoResource {
    private static final Log log = LogFactory.getLog(RepoFileResource.class);

    private String fileType;
    private ComparableBlob data;
    private RepoFileResource reference;

    public RepoFileResource() {
        super();
    }

    /**
     * @hibernate.property column="data" type="blob"
     */
    public Blob getData() {
        return data;
    }

    public void setData(ComparableBlob data) {
        this.data = data;
    }

    /**
     * @hibernate.property column="file_type" type="string" length="20"
     */
    public String getFileType() {
        return fileType;
    }

    public void setFileType(String type) {
        this.fileType = type;
    }

    public String getFinalFileType() {
        RepoFileResource res = this;
        while (res.isFileReference()) {
            res = res.getReference();
        }
        return res.getFileType();
    }

    public boolean isFileReference() {
        return getReference() != null;
    }

    /**
     * @hibernate.many-to-one column="reference"
     */
    public RepoFileResource getReference() {
        return reference;
    }

    public void setReference(RepoFileResource reference) {
        this.reference = reference;
    }

    protected Class getClientItf() {
        return FileResource.class;
    }

    protected void copyTo(Resource clientRes, ResourceFactory resourceFactory) {
        super.copyTo(clientRes, resourceFactory);

        FileResource fileRes = (FileResource) clientRes;

        if (isFileReference()) {
            RepoFileResource ref = getReference();
            fileRes.setFileType(null);
            fileRes.setData(null);
            fileRes.setReferenceURI(ref.getResourceURI());
        } else {
            fileRes.setFileType(getFileType());
            if (hasClientOption(CLIENT_OPTION_FULL_DATA)) {
                copyDataTo(fileRes);
            } else {
                fileRes.setData(null);
            }
            fileRes.setReferenceURI(null);
        }
    }

    protected void copyDataTo(FileResource fileRes) {
        Blob blob = getData();
        if (blob == null) {
            fileRes.setData(null);
        } else {
            try {
                fileRes.readData(blob.getBinaryStream());
            } catch (SQLException e) {
                log.error("Error while reading data blob of \"" + getResourceURI() + "\"", e);
                throw new JSExceptionWrapper(e);
            }
        }
    }

    public FileResourceData copyData() {
        try {
            if (isFileReference()) {
                String quotedResourceURI = "\"" + getResourceURI() + "\"";
                throw new JSException("jsexception.file.resource.is.reference", new Object[] { quotedResourceURI });
            }

            FileResourceData resData;

            Blob blob = getData();
            if (blob == null) {
                resData = new FileResourceData((byte[]) null);
            } else {
                resData = new FileResourceData(blob.getBinaryStream());
            }

            return resData;
        } catch (SQLException e) {
            log.error("Error while reading data blob of \"" + getResourceURI() + "\"", e);
            throw new JSExceptionWrapper(e);
        }
    }

    protected void copyDataFrom(FileResource dataRes) {
        if (dataRes.isReference()) {
            setData(null);
        } else {
            //only update when the client has set some data
            if (dataRes.hasData()) {
                byte[] clientData = dataRes.getData();
                ComparableBlob blob = new ComparableBlob(clientData);
                setData(blob);
            }
        }
    }

    protected void copyFrom(Resource clientRes, ReferenceResolver referenceResolver) {
        super.copyFrom(clientRes, referenceResolver);

        FileResource dataRes = (FileResource) clientRes;
        if (dataRes.isReference()) {
            setFileType(null);
            setData(null);

            RepoFileResource externalReference = (RepoFileResource) referenceResolver
                    .getExternalReference(dataRes.getReferenceURI(), RepoFileResource.class);

            if (dataRes.getFileType() != null
                    && !dataRes.getFileType().equals(externalReference.getFinalFileType())) {
                throw new JSException("jsexception.file.resource.no.match.type",
                        new Object[] { dataRes.getFileType(), externalReference.getFileType() });
            }
            setReference(externalReference);
        } else {
            setFileType(dataRes.getFileType());
            copyDataFrom(dataRes);
            setReference(null);
        }
    }
}