/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2016 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.filter.types;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.pentaho.reporting.engine.classic.core.filter.FormatSpecification;
import org.pentaho.reporting.engine.classic.core.filter.RawDataSource;
import org.pentaho.reporting.engine.classic.core.function.ExpressionRuntime;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.formatting.FastDateFormat;
import java.text.DateFormatSymbols;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
public class DateFieldType extends AbstractElementType implements RawDataSource, RotatableText {
public static class DateFieldTypeContext {
public transient FastDateFormat dateFormat;
public transient Locale locale;
public transient String formatString;
public transient TimeZone timeZone;
}
public static final DateFieldType INSTANCE = new DateFieldType();
public static final String DEFAULT_FORMAT = "dd.MM.yyyy HH:mm:ss";
public DateFieldType() {
super( "date-field" );
}
public Object getDesignValue( final ExpressionRuntime runtime, final ReportElement element ) {
Object formatStringRaw = element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.FORMAT_STRING );
final Object staticValue = ElementTypeUtils.queryStaticValue( element );
if ( staticValue instanceof Date ) {
if ( formatStringRaw == null ) {
// return the default to-string behavior of java.util.Date
formatStringRaw = DEFAULT_FORMAT;
}
final Locale locale = runtime.getResourceBundleFactory().getLocale();
final TimeZone timeZone = runtime.getResourceBundleFactory().getTimeZone();
final SimpleDateFormat dateFormat = new SimpleDateFormat( String.valueOf( formatStringRaw ), locale );
dateFormat.setDateFormatSymbols( new DateFormatSymbols( locale ) );
dateFormat.setTimeZone( timeZone );
return rotate( element, dateFormat.format( staticValue ), runtime );
}
final Object value = ElementTypeUtils.queryFieldName( element );
return rotate( element, value != null ? value : getId(), runtime );
}
/**
* Returns the unformated raw value. Whether that raw value is useable for the export is beyond the scope of this API
* definition, but providing access to {@link Number} or {@link java.util.Date} objects is a good idea.
*
* @param runtime
* the expression runtime that is used to evaluate formulas and expressions when computing the value of this
* filter.
* @param element
* @return the raw data.
*/
public Object getRawValue( final ExpressionRuntime runtime, final ReportElement element ) {
if ( runtime == null ) {
throw new NullPointerException( "Runtime must never be null." );
}
if ( element == null ) {
throw new NullPointerException( "Element must never be null." );
}
final Object retval = ElementTypeUtils.queryFieldOrValue( runtime, element );
if ( retval instanceof Date == false ) {
return element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.NULL_VALUE );
}
return retval;
}
/**
* Returns information about the formatstring that was used to transform a raw-value into a formatted text. Not all
* elements will make use of a format-string. These elements will return
* {@link org.pentaho.reporting.engine .classic.core.filter.FormatSpecification#TYPE_UNDEFINED} in that case.
*
* @param runtime
* the Expression runtime used to possibly compute the raw-value.
* @param element
* the element to which this datasource is added.
* @param formatSpecification
* the format specification (can be null).
* @return a filled format specififcation. If the <code>formatSpecification</code> parameter was not null, this given
* instance is reused.
*/
public FormatSpecification getFormatString( final ExpressionRuntime runtime, final ReportElement element,
FormatSpecification formatSpecification ) {
if ( formatSpecification == null ) {
formatSpecification = new FormatSpecification();
}
final Object formatStringRaw =
element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.FORMAT_STRING );
if ( formatStringRaw == null ) {
// return the default to-string behavior of java.util.Date
formatSpecification.redefine( FormatSpecification.TYPE_DATE_FORMAT, DEFAULT_FORMAT );
} else {
formatSpecification.redefine( FormatSpecification.TYPE_DATE_FORMAT, String.valueOf( formatStringRaw ) );
}
return formatSpecification;
}
/**
* Returns the current value for the data source.
*
* @param runtime
* the expression runtime that is used to evaluate formulas and expressions when computing the value of this
* filter.
* @param element
* the element from which to read attribute.
* @return the value.
*/
public Object getValue( final ExpressionRuntime runtime, final ReportElement element ) {
if ( runtime == null ) {
throw new NullPointerException( "Runtime must never be null." );
}
if ( element == null ) {
throw new NullPointerException( "Element must never be null." );
}
final Object retval = ElementTypeUtils.queryFieldOrValue( runtime, element );
if ( retval instanceof Date == false ) {
return rotate( element, element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.NULL_VALUE ), runtime );
}
Object formatStringRaw = element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.FORMAT_STRING );
if ( formatStringRaw == null ) {
// return the default to-string behavior of java.util.Date
formatStringRaw = "EEE MMM dd HH:mm:ss zzz yyyy";
}
try {
final Locale locale = runtime.getResourceBundleFactory().getLocale();
final TimeZone timeZone = runtime.getResourceBundleFactory().getTimeZone();
final DateFieldTypeContext context = element.getElementContext( DateFieldTypeContext.class );
if ( context.dateFormat == null ) {
context.formatString = String.valueOf( formatStringRaw );
context.locale = locale;
context.timeZone = timeZone;
context.dateFormat = new FastDateFormat( context.formatString, locale, timeZone );
} else {
if ( ObjectUtilities.equal( context.formatString, formatStringRaw ) == false
|| ObjectUtilities.equal( context.locale, locale ) == false
|| ObjectUtilities.equal( context.timeZone, timeZone ) == false ) {
context.timeZone = timeZone;
context.locale = locale;
context.formatString = String.valueOf( formatStringRaw );
context.dateFormat = new FastDateFormat( context.formatString, locale, timeZone );
}
}
return rotate( element, context.dateFormat.format( retval ), runtime );
} catch ( final Exception e ) {
return rotate( element, element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.NULL_VALUE ), runtime );
}
}
}