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A set of classes and interfaces that help building Reports
/*
* Copyright (C) 2023 Dynamia Soluciones IT S.A.S - NIT 900302344-1
* Colombia / South America
*
* Licensed under the Apache 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.apache.org/licenses/LICENSE-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 tools.dynamia.reports;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRResultSetDataSource;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRBeanArrayDataSource;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import tools.dynamia.commons.logger.LoggingService;
import tools.dynamia.commons.logger.SLF4JLoggingService;
import tools.dynamia.io.FileInfo;
import javax.sql.DataSource;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.URL;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
/**
* @author Mario A. Serrano Leones
*/
public class ReportFiller {
private static final LoggingService logger = new SLF4JLoggingService(ReportFiller.class);
/**
*/
public static Report fill(ReportDescriptor reportDescriptor) {
Report report = null;
try {
Object content = createTemporaryReport(reportDescriptor);
report = new Report(content, reportDescriptor.getName(), reportDescriptor.getDefaultOutputType());
} catch (Exception e) {
throw new ReportFillerException(e);
}
return report;
}
public static Report fill(ReportDescriptor reportDescriptor, boolean inMemory) {
if (!inMemory) {
return fill(reportDescriptor);
} else {
Report report = null;
try {
Object content = createInMemoryReport(reportDescriptor);
report = new Report(content, reportDescriptor.getName(), reportDescriptor.getDefaultOutputType());
} catch (Exception e) {
throw new ReportFillerException(e);
}
return report;
}
}
private static File createTemporaryReport(ReportDescriptor reportDescriptor) throws Exception {
Object datasource = getDatasource(reportDescriptor);
File filledReportFile = File.createTempFile("dmreport" + System.currentTimeMillis(), ".jrprint");
try (FileOutputStream out = new FileOutputStream(filledReportFile)) {
Object template = getTemplate(reportDescriptor);
Map params = buildParams(reportDescriptor.getParameters());
if (datasource instanceof JRDataSource jrds) {
if (template instanceof String) {
InputStream is = ReportFiller.class.getResourceAsStream(reportDescriptor.getTemplate().toString());
JasperFillManager.fillReportToStream(is, out, params, jrds);
} else if (template instanceof JasperReport jr) {
JasperFillManager.fillReportToStream(jr, out, params, jrds);
} else if (template instanceof File file) {
params.put("CURRENT_DIRECTORY", file.getParentFile().getAbsolutePath());
InputStream is = new FileInputStream(file);
JasperFillManager.fillReportToStream(is, out, params, jrds);
} else if (template instanceof URL) {
InputStream is = ((URL) template).openStream();
JasperFillManager.fillReportToStream(is, out, params, jrds);
} else {
throw new ReportFillerException("Unknow report template type :" + reportDescriptor.getTemplate());
}
} else if (datasource instanceof Connection connection) {
if (template instanceof String) {
InputStream is = ReportFiller.class.getResourceAsStream(reportDescriptor.getTemplate().toString());
JasperFillManager.fillReportToStream(is, out, params, connection);
} else if (template instanceof JasperReport jr) {
JasperFillManager.fillReportToStream(jr, out, params, connection);
} else if (template instanceof File file) {
params.put("CURRENT_DIRECTORY", file.getParentFile().getAbsolutePath());
InputStream is = new FileInputStream(file);
JasperFillManager.fillReportToStream(is, out, params, connection);
} else if (template instanceof URL) {
InputStream is = ((URL) template).openStream();
JasperFillManager.fillReportToStream(is, out, params, connection);
} else {
throw new ReportFillerException("Unknow report template type :" + reportDescriptor.getTemplate());
}
}
}
return filledReportFile;
}
private static Map buildParams(Map parameters) {
var params = new HashMap<>(parameters);
params.entrySet()
.stream().filter(e -> e.getValue() instanceof ReportDataSource)
.forEach(e -> {
var datasource = (ReportDataSource) e.getValue();
if (datasource.getValue() instanceof Collection) {
params.put(e.getKey(), new JRBeanCollectionDataSource((Collection) datasource.getValue()));
} else if (datasource.getValue() instanceof JRDataSource) {
params.put(e.getKey(), datasource.getValue());
}
});
return params;
}
private static JasperPrint createInMemoryReport(ReportDescriptor reportDescriptor) throws Exception {
Object datasource = getDatasource(reportDescriptor);
JasperPrint jasperPrint = null;
Object template = getTemplate(reportDescriptor);
Map params = new HashMap<>(reportDescriptor.getParameters());
if (datasource instanceof JRDataSource jrds) {
if (template instanceof String) {
InputStream is = ReportFiller.class.getResourceAsStream(reportDescriptor.getTemplate().toString());
jasperPrint = JasperFillManager.fillReport(is, params, jrds);
} else if (template instanceof JasperReport jr) {
jasperPrint = JasperFillManager.fillReport(jr, params, jrds);
} else if (template instanceof File file) {
params.put("CURRENT_DIRECTORY", file.getParentFile().getAbsolutePath());
InputStream is = new FileInputStream(file);
jasperPrint = JasperFillManager.fillReport(is, params, jrds);
} else if (template instanceof URL) {
InputStream is = ((URL) template).openStream();
jasperPrint = JasperFillManager.fillReport(is, params, jrds);
} else {
throw new ReportFillerException("Unknow report template type :" + reportDescriptor.getTemplate());
}
} else if (datasource instanceof Connection connection) {
if (template instanceof String) {
InputStream is = ReportFiller.class.getResourceAsStream(reportDescriptor.getTemplate().toString());
jasperPrint = JasperFillManager.fillReport(is, params, connection);
} else if (template instanceof JasperReport jr) {
jasperPrint = JasperFillManager.fillReport(jr, params, connection);
} else if (template instanceof File file) {
params.put("CURRENT_DIRECTORY", file.getParentFile().getAbsolutePath());
InputStream is = new FileInputStream(file);
jasperPrint = JasperFillManager.fillReport(is, params, connection);
} else if (template instanceof URL) {
InputStream is = ((URL) template).openStream();
jasperPrint = JasperFillManager.fillReport(is, params, connection);
} else {
throw new ReportFillerException("Unknow report template type :" + reportDescriptor.getTemplate());
}
}
return jasperPrint;
}
private static Object getDatasource(ReportDescriptor reportDescriptor) {
Object dataSource = reportDescriptor.getDataSource();
Object realDatasource = null;
if (dataSource == null) {
realDatasource = new JREmptyDataSource();
} else if (dataSource instanceof JRDataSource) {
realDatasource = dataSource;
} else if (dataSource instanceof Collection) {
realDatasource = new JRBeanCollectionDataSource((Collection) dataSource);
} else if (dataSource.getClass().isArray()) {
realDatasource = new JRBeanArrayDataSource((Object[]) dataSource);
} else if (dataSource instanceof ResultSet) {
realDatasource = new JRResultSetDataSource((ResultSet) dataSource);
} else if (dataSource instanceof Connection) {
realDatasource = dataSource;
} else if (dataSource instanceof DataSource) {
try {
DataSource jdbcDatasource = (DataSource) dataSource;
realDatasource = jdbcDatasource.getConnection();
} catch (SQLException e) {
logger.error("Error getting connection from JDBC DataSource for ReportDescriptor " + reportDescriptor, e);
}
}
return realDatasource;
}
private static Object getTemplate(ReportDescriptor rd) {
Object template = rd.getTemplate();
if (template instanceof FileInfo) {
template = ((FileInfo) template).getFile();
}
return template;
}
private ReportFiller() {
}
}