Java tutorial
/* This file is part of Cyclos (www.cyclos.org). A project of the Social Trade Organisation (www.socialtrade.org). Cyclos is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Cyclos 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 General Public License for more details. You should have received a copy of the GNU General Public License along with Cyclos; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package nl.strohalm.cyclos.taglibs; import java.io.IOException; import java.math.BigDecimal; import java.math.BigInteger; import java.util.Calendar; import javax.servlet.jsp.JspException; import javax.servlet.jsp.tagext.TagSupport; import nl.strohalm.cyclos.entities.reports.StatisticalNumber; import nl.strohalm.cyclos.entities.settings.LocalSettings; import nl.strohalm.cyclos.services.settings.SettingsService; import nl.strohalm.cyclos.utils.Amount; import nl.strohalm.cyclos.utils.SpringHelper; import nl.strohalm.cyclos.utils.conversion.CardNumberConverter; import nl.strohalm.cyclos.utils.conversion.CoercionHelper; import nl.strohalm.cyclos.utils.conversion.Converter; import nl.strohalm.cyclos.utils.conversion.NumberConverter; import org.apache.commons.io.FileUtils; import org.apache.commons.lang.StringUtils; /** * Renders a formatted data * @author luis * @author rinke (the StatisticalNumber part) */ public class FormatTag extends TagSupport { private static final long serialVersionUID = 5262848042770106863L; private Amount amount; private Calendar rawDate; private Calendar date; private Calendar dateTime; private Calendar time; private Number number; private Long bytes; private Object defaultValue; private Integer precision; private boolean forceSignal; private String unitsPattern; private String cardNumberPattern; @Override public int doEndTag() throws JspException { String out = ""; final LocalSettings localSettings = getLocalSettings(); if (number != null) { if (number instanceof Double || number instanceof BigDecimal || number instanceof Float) { final BigDecimal theNumber = CoercionHelper.coerce(BigDecimal.class, number); NumberConverter<BigDecimal> numberConverter; if (StringUtils.isNotEmpty(unitsPattern)) { numberConverter = localSettings.getUnitsConverter(unitsPattern); } else if (precision == null) { numberConverter = localSettings.getNumberConverter(); } else { numberConverter = localSettings.getNumberConverterForPrecision(precision); } out = numberConverter.toString(theNumber); if (forceSignal && theNumber.compareTo(BigDecimal.ZERO) > 0) { out = "+" + out; } } else if (number instanceof StatisticalNumber) { out = convertStatisticalNumber((StatisticalNumber) number); } else if (number instanceof BigInteger && cardNumberPattern != null) { out = new CardNumberConverter(cardNumberPattern).toString((BigInteger) number); } else { final NumberConverter<Long> longConverter = localSettings.getLongConverter(); final Long theNumber = CoercionHelper.coerce(Long.class, number); out = longConverter.toString(theNumber); } } else if (amount != null) { Converter<Amount> converter; if (StringUtils.isEmpty(unitsPattern)) { converter = localSettings.getAmountConverter(); } else { converter = localSettings.getAmountConverter(unitsPattern); } out = converter.toString(amount); } else if (rawDate != null) { out = localSettings.getRawDateConverter().toString(rawDate); } else if (date != null) { out = localSettings.getDateConverter().toString(date); } else if (dateTime != null) { out = localSettings.getDateTimeConverter().toString(dateTime); } else if (time != null) { out = localSettings.getTimeConverter().toString(time); } else if (bytes != null) { out = FileUtils.byteCountToDisplaySize(bytes); } else { out = defaultValue == null ? null : defaultValue.toString(); } try { if (StringUtils.isNotEmpty(out)) { pageContext.getOut().print(out); } } catch (final IOException e) { throw new JspException(e); } finally { release(); } return EVAL_PAGE; } public Amount getAmount() { return amount; } public Long getBytes() { return bytes; } public String getCardNumberPattern() { return cardNumberPattern; } public Calendar getDate() { return date; } public Calendar getDateTime() { return dateTime; } public Object getDefault() { return defaultValue; } public Object getNumber() { return number; } public Integer getPrecision() { return precision; } public Calendar getTime() { return time; } public String getUnitsPattern() { return unitsPattern; } public boolean isForceSignal() { return forceSignal; } @Override public void release() { super.release(); number = null; amount = null; rawDate = null; date = null; dateTime = null; time = null; bytes = null; defaultValue = null; precision = null; forceSignal = false; cardNumberPattern = null; } public void setAmount(final Amount amount) { this.amount = amount; } public void setBytes(final Long bytes) { this.bytes = bytes; } public void setCardNumberPattern(final String cardNumberPattern) { this.cardNumberPattern = cardNumberPattern; } public void setDate(final Calendar date) { this.date = date; } public void setDateTime(final Calendar dateTime) { this.dateTime = dateTime; } public void setDefault(final Object defaultValue) { this.defaultValue = defaultValue; } public void setForceSignal(final boolean forceSignal) { this.forceSignal = forceSignal; } public void setNumber(final Object number) { this.number = CoercionHelper.coerce(Number.class, number); } public void setPrecision(final Integer precision) { this.precision = precision; } public void setRawDate(final Calendar rawDate) { this.rawDate = rawDate; } public void setTime(final Calendar time) { this.time = time; } public void setUnitsPattern(final String unitsPattern) { this.unitsPattern = unitsPattern; } private String convertStatisticalNumber(final StatisticalNumber number) { final Integer lPrecision = (precision == null) ? new Integer(number.getPrecision()) : precision; final NumberConverter<BigDecimal> numberConverter = getLocalSettings() .getNumberConverterForPrecision(lPrecision); if (number.isNull()) { return "-"; } String data = numberConverter.toString(new BigDecimal(number.floatValue())); if (number.isPercentage()) { data = data + "%"; } else if (number.isPvalue() && number.floatValue() < 0.05) { data = "<b>" + data + "</b>"; } else if (number.hasErrorBar()) { if (number.hasSymmetricalErrorBar()) { final String error = numberConverter.toString(new BigDecimal(number.getError().floatValue())); data = data + " ± " + error; } else { final String lower = numberConverter.toString(new BigDecimal(number.getLowerBound().floatValue())); final String upper = numberConverter.toString(new BigDecimal(number.getUpperBound().floatValue())); data = data + " (" + lower + " - " + upper + ")"; } } return data; } private LocalSettings getLocalSettings() { final SettingsService settingsService = SpringHelper.bean(pageContext.getServletContext(), SettingsService.class); final LocalSettings settings = settingsService.getLocalSettings(); return settings; } }