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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2019 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 part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.engine.query;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;
import net.sf.jasperreports.data.RewindableDataSourceProvider;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRDataset;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRValueParameter;
import net.sf.jasperreports.engine.JasperReportsContext;
import net.sf.jasperreports.engine.data.JRAbstractTextDataSource;
import net.sf.jasperreports.engine.data.JsonData;
import net.sf.jasperreports.engine.data.JsonDataCollection;
import net.sf.jasperreports.engine.data.TextDataSourceAttributes;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Narcis Marcu ([email protected])
*/
public abstract class AbstractJsonQueryExecuter extends JRAbstractQueryExecuter
{
private static final Log log = LogFactory.getLog(AbstractJsonQueryExecuter.class);
private JsonData datasource;
/**
*
*/
public AbstractJsonQueryExecuter(
JasperReportsContext jasperReportsContext,
JRDataset dataset,
Map parametersMap
)
{
this(SimpleQueryExecutionContext.of(jasperReportsContext),
dataset, parametersMap);
}
public AbstractJsonQueryExecuter(
QueryExecutionContext context,
JRDataset dataset,
Map parametersMap
)
{
super(context, dataset, parametersMap);
parseQuery();
}
@Override
public JRDataSource createDatasource() throws JRException
{
TextDataSourceAttributes textAttributes = getTextAttributes();
InputStream jsonInputStream = (InputStream) getParameterValue(JsonQueryExecuterFactory.JSON_INPUT_STREAM);
if (jsonInputStream != null) {
T jsonDatasource = getJsonDataInstance(jsonInputStream);
jsonDatasource.setTextAttributes(textAttributes);
datasource = jsonDatasource;
} else {
String jsonSource = getStringParameterOrProperty(JsonQueryExecuterFactory.JSON_SOURCE);
if (jsonSource != null) {
T jsonDatasource = getJsonDataInstance(jsonSource);
jsonDatasource.setTextAttributes(textAttributes);
datasource = jsonDatasource;
} else {
List jsonSources = (List) getParameterValue(JsonQueryExecuterFactory.JSON_SOURCES, true);
if (jsonSources != null) {
List> jsonProviders = new ArrayList<>(jsonSources.size());
for (String source : jsonSources) {
RewindableDataSourceProvider jsonProvider = getJsonDataProviderInstance(source, textAttributes);
jsonProviders.add(jsonProvider);
}
datasource = new JsonDataCollection(jsonProviders);
} else {
if (log.isWarnEnabled()) {
log.warn("No JSON source was provided.");
}
}
}
}
return datasource;
}
protected abstract T getJsonDataInstance(InputStream jsonInputStream) throws JRException;
protected abstract T getJsonDataInstance(String jsonSource) throws JRException;
protected abstract RewindableDataSourceProvider getJsonDataProviderInstance(
String source, TextDataSourceAttributes textAttributes);
protected TextDataSourceAttributes getTextAttributes()
{
TextDataSourceAttributes attributes = new TextDataSourceAttributes();
String dateFormatPattern = getStringParameterOrProperty(JsonQueryExecuterFactory.JSON_DATE_PATTERN);
if(dateFormatPattern != null){
attributes.setDatePattern(dateFormatPattern);
}
String numberFormatPattern = getStringParameterOrProperty(JsonQueryExecuterFactory.JSON_NUMBER_PATTERN);
if(numberFormatPattern != null){
attributes.setNumberPattern(numberFormatPattern);
}
Locale jsonLocale = (Locale) getParameterValue(JsonQueryExecuterFactory.JSON_LOCALE, true);
if (jsonLocale != null) {
attributes.setLocale(jsonLocale);
} else {
String jsonLocaleCode = getStringParameterOrProperty(JsonQueryExecuterFactory.JSON_LOCALE_CODE);
if (jsonLocaleCode != null) {
attributes.setLocale(jsonLocaleCode);
}
}
TimeZone jsonTimezone = (TimeZone) getParameterValue(JsonQueryExecuterFactory.JSON_TIME_ZONE, true);
if (jsonTimezone != null) {
attributes.setTimeZone(jsonTimezone);
} else {
String jsonTimezoneId = getStringParameterOrProperty(JsonQueryExecuterFactory.JSON_TIMEZONE_ID);
if (jsonTimezoneId != null) {
attributes.setTimeZone(jsonTimezoneId);
}
}
return attributes;
}
@Override
public void close()
{
//NOP
}
@Override
public boolean cancelQuery() throws JRException
{
//nothing to cancel
return false;
}
}