Java tutorial
/* * 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 <http://www.gnu.org/licenses/>. */ package net.sf.jasperreports.engine.data; import java.math.BigDecimal; import java.math.BigInteger; import java.text.DateFormat; import java.text.NumberFormat; import java.text.ParseException; import java.util.Date; import java.util.Locale; import java.util.TimeZone; import org.apache.commons.beanutils.locale.LocaleConvertUtilsBean; import net.sf.jasperreports.engine.JRDataSource; import net.sf.jasperreports.engine.JRException; import net.sf.jasperreports.engine.util.FormatUtils; import net.sf.jasperreports.engine.util.JRCloneUtils; import net.sf.jasperreports.engine.util.JRDateLocaleConverter; /** * Abstract text data source, containing methods used to parse text * data into numerical or date values. * * @author Lucian Chirita (lucianc@users.sourceforge.net) */ public abstract class JRAbstractTextDataSource implements JRDataSource { public static final String EXCEPTION_MESSAGE_KEY_CANNOT_CONVERT_FIELD_TYPE = "data.common.cannot.convert.field.type"; public static final String EXCEPTION_MESSAGE_KEY_CANNOT_MODIFY_PROPERTIES_AFTER_START = "data.common.cannot.modify.properties.after.start"; public static final String EXCEPTION_MESSAGE_KEY_NODE_NOT_AVAILABLE = "data.common.xml.node.not.available"; public static final String EXCEPTION_MESSAGE_KEY_NULL_DOCUMENT = "data.common.xml.null.document"; public static final String EXCEPTION_MESSAGE_KEY_NULL_SELECT_EXPRESSION = "data.common.xml.null.select.expression"; public static final String EXCEPTION_MESSAGE_KEY_UNKNOWN_COLUMN_NAME = "data.common.unknown.column.name"; public static final String EXCEPTION_MESSAGE_KEY_UNKNOWN_NUMBER_TYPE = "data.common.unknown.number.type"; private LocaleConvertUtilsBean convertBean; private TextDataSourceAttributes textAttributes; protected JRAbstractTextDataSource() { this.textAttributes = new TextDataSourceAttributes(); } protected Object convertStringValue(String text, Class<?> valueClass) { Object value = null; if (String.class.equals(valueClass)) { value = text; } else if (Number.class.isAssignableFrom(valueClass)) { value = getConvertBean().convert(text.trim(), valueClass, textAttributes.getLocale(), textAttributes.getNumberPattern()); } else if (Date.class.isAssignableFrom(valueClass)) { value = getConvertBean().convert(text.trim(), valueClass, textAttributes.getLocale(), textAttributes.getDatePattern()); } else if (Boolean.class.equals(valueClass)) { value = Boolean.valueOf(text); } return value; } protected Object convertNumber(Number number, Class<?> valueClass) throws JRException { Number value = null; if (valueClass.equals(Byte.class)) { value = number.byteValue(); } else if (valueClass.equals(Short.class)) { value = number.shortValue(); } else if (valueClass.equals(Integer.class)) { value = number.intValue(); } else if (valueClass.equals(Long.class)) { value = number.longValue(); } else if (valueClass.equals(Float.class)) { value = number.floatValue(); } else if (valueClass.equals(Double.class)) { value = number.doubleValue(); } else if (valueClass.equals(BigInteger.class)) { value = BigInteger.valueOf(number.longValue()); } else if (valueClass.equals(BigDecimal.class)) { value = new BigDecimal(Double.toString(number.doubleValue())); } else { throw new JRException(EXCEPTION_MESSAGE_KEY_UNKNOWN_NUMBER_TYPE, new Object[] { valueClass.getName() }); } return value; } /** * @deprecated Replaced by {@link FormatUtils#getFormattedNumber(NumberFormat, String, Class)} */ protected Number getFormattedNumber(NumberFormat numberFormat, String fieldValue, Class<?> valueClass) throws ParseException { return FormatUtils.getFormattedNumber(numberFormat, fieldValue, valueClass); } /** * @deprecated Replaced by {@link FormatUtils#getFormattedDate(DateFormat, String, Class)} */ protected Date getFormattedDate(DateFormat dateFormat, String fieldValue, Class<?> valueClass) throws ParseException { return FormatUtils.getFormattedDate(dateFormat, fieldValue, valueClass); } protected LocaleConvertUtilsBean getConvertBean() { if (convertBean == null) { convertBean = new LocaleConvertUtilsBean(); Locale locale = textAttributes.getLocale(); if (locale != null) { convertBean.setDefaultLocale(locale); convertBean.deregister(); //convertBean.lookup(); } convertBean.register(new JRDateLocaleConverter(textAttributes.getTimeZone()), java.util.Date.class, locale); } return convertBean; } /** * Copy the text parsing attributes for another object. * * @param textDataSource the object to copy the attributes from */ public void setTextAttributes(JRAbstractTextDataSource textDataSource) { setTextAttributes(textDataSource.getTextAttributes()); } public TextDataSourceAttributes getTextAttributes() { return textAttributes; } public void setTextAttributes(TextDataSourceAttributes attributes) { this.textAttributes = JRCloneUtils.nullSafeClone(attributes); } public Locale getLocale() { return textAttributes.getLocale(); } public void setLocale(Locale locale) { textAttributes.setLocale(locale); convertBean = null; } public void setLocale(String locale) { textAttributes.setLocale(locale); convertBean = null; } public String getDatePattern() { return textAttributes.getDatePattern(); } public void setDatePattern(String datePattern) { textAttributes.setDatePattern(datePattern); convertBean = null; } public String getNumberPattern() { return textAttributes.getNumberPattern(); } public void setNumberPattern(String numberPattern) { textAttributes.setNumberPattern(numberPattern); convertBean = null; } public TimeZone getTimeZone() { return textAttributes.getTimeZone(); } public void setTimeZone(TimeZone timeZone) { textAttributes.setTimeZone(timeZone); convertBean = null; } public void setTimeZone(String timeZoneId) { textAttributes.setTimeZone(timeZoneId); convertBean = null; } }